From xen-changelog-bounces@lists.xenproject.org Fri Feb 01 10:44:10 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Fri, 01 Feb 2019 10:44:10 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWIq-0007Rj-Gs; Fri, 01 Feb 2019 10:44:08 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWIp-0007Rd-9w for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:44:07 +0000 X-Inumbo-ID: 4bb2df3a-260e-11e9-97e4-dbc4939ddf45 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 4bb2df3a-260e-11e9-97e4-dbc4939ddf45; Fri, 01 Feb 2019 10:44:05 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWIn-0004ag-5f for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:44:05 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpWIn-0003zW-2x for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:44:05 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 10:44:05 +0000 Subject: [Xen-changelog] [xen staging-4.11] VMX: fix vmx_handle_eoi() X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGMyMWFiYThiOWQ1Y2U1YmY1NWNlYzU1NTlkZjc2M2E5YjY4MmMwMzIKQXV0aG9yOiAg ICAgSmFuIEJldWxpY2ggPGpiZXVsaWNoQHN1c2UuY29tPgpBdXRob3JEYXRlOiBGcmkgRmViIDEg 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from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWIz-0007Ty-KY; Fri, 01 Feb 2019 10:44:17 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWIy-0007Ts-TT for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:44:16 +0000 X-Inumbo-ID: 51c5f38d-260e-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 51c5f38d-260e-11e9-bc90-bc764e045a96; Fri, 01 Feb 2019 10:44:15 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWIx-0004ao-C1 for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:44:15 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpWIx-00040h-9M for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:44:15 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 10:44:15 +0000 Subject: [Xen-changelog] [xen staging-4.11] update Xen version to 4.11.2-pre X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGJmNjA4ZmQyZjAzODMyOTgxZWE2NTAyYzQ3NjU3NGU1NDA0YjQzMTQKQXV0aG9yOiAg ICAgSmFuIEJldWxpY2ggPGpiZXVsaWNoQHN1c2UuY29tPgpBdXRob3JEYXRlOiBGcmkgRmViIDEg MTE6Mjc6MDYgMjAxOSArMDEwMApDb21taXQ6ICAgICBKYW4gQmV1bGljaCA8amJldWxpY2hAc3Vz ZS5jb20+CkNvbW1pdERhdGU6IEZyaSBGZWIgMSAxMToyNzowNiAyMDE5ICswMTAwCgogICAgdXBk 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c3RzLnhlbnByb2plY3Qub3JnCmh0dHBzOi8vbGlzdHMueGVucHJvamVjdC5vcmcveGVuLWNoYW5n ZWxvZw== From xen-changelog-bounces@lists.xenproject.org Fri Feb 01 10:44:28 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Fri, 01 Feb 2019 10:44:28 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWJA-0007V4-Mi; Fri, 01 Feb 2019 10:44:28 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWJ9-0007Uv-C9 for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:44:27 +0000 X-Inumbo-ID: 57d9be14-260e-11e9-9a06-3f46772903d1 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 57d9be14-260e-11e9-9a06-3f46772903d1; Fri, 01 Feb 2019 10:44:25 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWJ7-0004bc-IT for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:44:25 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpWJ7-00041F-Fl for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:44:25 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 10:44:25 +0000 Subject: [Xen-changelog] [xen staging-4.11] x86/HVM: __hvm_copy() should not write to p2m_ioreq_server pages X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" 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helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWJI-0007Vz-J5 for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:44:36 +0000 X-Inumbo-ID: 5decf1ea-260e-11e9-9020-57381f09b01e Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 5decf1ea-260e-11e9-9020-57381f09b01e; Fri, 01 Feb 2019 10:44:36 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWJH-0004bk-Ob for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:44:35 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpWJH-00041p-M5 for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:44:35 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 10:44:35 +0000 Subject: [Xen-changelog] [xen staging-4.11] x86/mem-sharing: Don't leave the altp2m lock held when nominating a page X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDdkMWJkOTg1ZWJkNGMxNDczYzRkZmQ1MGI2ZDNhMzNjOGUxYjFhOTMKQXV0aG9yOiAg ICAgQW5kcmV3IENvb3BlciA8YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT4KQXV0aG9yRGF0ZTog RnJpIEZlYiAxIDExOjI4OjQ1IDIwMTkgKzAxMDAKQ29tbWl0OiAgICAgSmFuIEJldWxpY2ggPGpi ZXVsaWNoQHN1c2UuY29tPgpDb21taXREYXRlOiBGcmkgRmViIDEgMTE6Mjg6NDUgMjAxOSArMDEw MAoKICAgIHg4Ni9tZW0tc2hhcmluZzogRG9uJ3QgbGVhdmUgdGhlIGFsdHAybSBsb2NrIGhlbGQg d2hlbiBub21pbmF0aW5nIGEgcGFnZQogICAgCiAgICBnZXRfZ2ZuX3R5cGVfYWNjZXNzKCkgaW50 ZXJuYWxseSB0YWtlcyB0aGUgcDJtIGxvY2ssIGFuZCBub3RoaW5nIGV2ZXIgdW5sb2NrcwogICAg 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local (Exim 4.89) (envelope-from ) id 1gpWJR-000431-SK for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:44:45 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 10:44:45 +0000 Subject: [Xen-changelog] [xen staging-4.11] x86/soft-reset: Drop gfn reference after calling get_gfn_query() X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDBiMmJlMGJkODJiODg5ZDcxYmUxYzIwMDRmYjMwOTljN2RiYTRjNmQKQXV0aG9yOiAg ICAgQW5kcmV3IENvb3BlciA8YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT4KQXV0aG9yRGF0ZTog RnJpIEZlYiAxIDExOjI5OjE2IDIwMTkgKzAxMDAKQ29tbWl0OiAgICAgSmFuIEJldWxpY2ggPGpi 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2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Fri, 01 Feb 2019 10:44:57 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWJd-0007YQ-S6; Fri, 01 Feb 2019 10:44:57 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWJd-0007YH-2f for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:44:57 +0000 X-Inumbo-ID: 6a15781c-260e-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 6a15781c-260e-11e9-bc90-bc764e045a96; Fri, 01 Feb 2019 10:44:56 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWJc-0004d3-5A for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:44:56 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpWJc-00043Y-2g for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:44:56 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 10:44:56 +0000 Subject: [Xen-changelog] [xen staging-4.11] ns16550/PCI: fix skipping of devices X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDkxZjJhZDc2YWE4MmFlYmI5ZWJmMGY5NTlhODIxODQyOTgzOGMwYTgKQXV0aG9yOiAg ICAgSmFuIEJldWxpY2ggPGpiZXVsaWNoQHN1c2UuY29tPgpBdXRob3JEYXRlOiBGcmkgRmViIDEg MTE6Mjk6NTMgMjAxOSArMDEwMApDb21taXQ6ICAgICBKYW4gQmV1bGljaCA8amJldWxpY2hAc3Vz 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[Xen-changelog] [xen staging-4.11] x86/VT-x: Don't activate VMCS Shadowing outside of nested vmx mode X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDYzZDcxMTM4YTRkMzUyMWNmNDJmZjI4YjBkZDNlNzliODJkNzkyMzAKQXV0aG9yOiAg ICAgQW5kcmV3IENvb3BlciA8YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT4KQXV0aG9yRGF0ZTog RnJpIEZlYiAxIDExOjMxOjI4IDIwMTkgKzAxMDAKQ29tbWl0OiAgICAgSmFuIEJldWxpY2ggPGpi ZXVsaWNoQHN1c2UuY29tPgpDb21taXREYXRlOiBGcmkgRmViIDEgMTE6MzE6MjggMjAxOSArMDEw MAoKICAgIHg4Ni9WVC14OiBEb24ndCBhY3RpdmF0ZSBWTUNTIFNoYWRvd2luZyBvdXRzaWRlIG9m IG5lc3RlZCB2bXggbW9kZQogICAgCiAgICBCeSBkZWZhdWx0IG9uIGNhcGFibGUgaGFyZHdhcmUs 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[Xen-changelog] [xen staging-4.11] x86/hvm: Corrections to RDTSCP intercept handling X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============6999107398308102560==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============6999107398308102560== Content-Type: text/plain commit dd914e4c6fc91f576846855ab14d473f576835bd Author: Andrew Cooper AuthorDate: Fri Feb 1 11:32:03 2019 +0100 Commit: Jan Beulich CommitDate: Fri Feb 1 11:32:03 2019 +0100 x86/hvm: Corrections to RDTSCP intercept handling For both VT-x and SVM, the RDTSCP intercept will trigger if the pipeline supports the instruction, but the guest may not have RDTSCP in its featureset. Bring the vmexit handlers in line with the main emulator behaviour by optionally handing back #UD. Next on the AMD side, if RDTSCP actually ends up being intercepted on a debug build or first-gen SVM hardware which lacks NRIP, we first update regs->rcx, then call __get_instruction_length() asking for RDTSC. As the two instructions are different (and indeed, different lengths!), __get_instruction_length_from_list() fails and hands back a #GP fault. This can demonstrated by putting a guest into tsc_mode="always emulate" and executing an RDTSCP instruction: (d1) --- Xen Test Framework --- (d1) Environment: HVM 64bit (Long mode 4 levels) (d1) Test rdtscp (d1) TSC mode 1 (XEN) emulate.c:147:d1v0 __get_instruction_length: Mismatch between expected and actual instruction: (XEN) emulate.c:152:d1v0 insn_index 8, opcode 0xf0031 modrm 0 (XEN) emulate.c:154:d1v0 rip 0x10475f, nextrip 0x104762, len 3 (XEN) SVM insn len emulation failed (1): d1v0 64bit @ 0008:0010475f -> 0f 01 f9 0f 31 5b 31 ff 31 c0 e9 c2 db ff ff 00 (d1) ****************************** (d1) PANIC: Unhandled exception at 0008:000000000010475f (d1) Vec 13 #GP[0000] (d1) ****************************** First, teach __get_instruction_length() to cope with RDTSCP, and improve svm_vmexit_do_rdtsc() to ask for the correct instruction. Move the regs->rcx adjustment into this function to ensure it gets done after we are done potentially raising faults. Reported-by: Paul Durrant Signed-off-by: Andrew Cooper Reviewed-by: Brian Woods Reviewed-by: Jan Beulich Reviewed-by: Kevin Tian Reviewed-by: Roger Pau Monné master commit: 3fd3fda9c26fc3c4f77250f795ed7ff9d38e2ec6 master date: 2018-12-17 16:28:03 +0000 --- xen/arch/x86/hvm/svm/emulate.c | 1 + xen/arch/x86/hvm/svm/svm.c | 22 +++++++++++++++++----- xen/arch/x86/hvm/vmx/vmx.c | 8 ++++++++ xen/include/asm-x86/hvm/svm/emulate.h | 1 + 4 files changed, 27 insertions(+), 5 deletions(-) diff --git a/xen/arch/x86/hvm/svm/emulate.c b/xen/arch/x86/hvm/svm/emulate.c index 535674e9dc..0897944760 100644 --- a/xen/arch/x86/hvm/svm/emulate.c +++ b/xen/arch/x86/hvm/svm/emulate.c @@ -75,6 +75,7 @@ static const struct { [INSTR_STGI] = { X86EMUL_OPC(0x0f, 0x01), MODRM(3, 3, 4) }, [INSTR_CLGI] = { X86EMUL_OPC(0x0f, 0x01), MODRM(3, 3, 5) }, [INSTR_INVLPGA] = { X86EMUL_OPC(0x0f, 0x01), MODRM(3, 3, 7) }, + [INSTR_RDTSCP] = { X86EMUL_OPC(0x0f, 0x01), MODRM(3, 7, 1) }, [INSTR_INVD] = { X86EMUL_OPC(0x0f, 0x08) }, [INSTR_WBINVD] = { X86EMUL_OPC(0x0f, 0x09) }, [INSTR_WRMSR] = { X86EMUL_OPC(0x0f, 0x30) }, diff --git a/xen/arch/x86/hvm/svm/svm.c b/xen/arch/x86/hvm/svm/svm.c index b964c59dad..c61693dcb5 100644 --- a/xen/arch/x86/hvm/svm/svm.c +++ b/xen/arch/x86/hvm/svm/svm.c @@ -2321,14 +2321,28 @@ static void svm_vmexit_do_hlt(struct vmcb_struct *vmcb, hvm_hlt(regs->eflags); } -static void svm_vmexit_do_rdtsc(struct cpu_user_regs *regs) +static void svm_vmexit_do_rdtsc(struct cpu_user_regs *regs, bool rdtscp) { + struct vcpu *curr = current; + const struct domain *currd = curr->domain; + enum instruction_index insn = rdtscp ? INSTR_RDTSCP : INSTR_RDTSC; unsigned int inst_len; - if ( (inst_len = __get_instruction_length(current, INSTR_RDTSC)) == 0 ) + if ( rdtscp && !currd->arch.cpuid->extd.rdtscp && + currd->arch.tsc_mode != TSC_MODE_PVRDTSCP ) + { + hvm_inject_hw_exception(TRAP_invalid_op, X86_EVENT_NO_EC); return; + } + + if ( (inst_len = __get_instruction_length(curr, insn)) == 0 ) + return; + __update_guest_eip(regs, inst_len); + if ( rdtscp ) + regs->rcx = hvm_msr_tsc_aux(curr); + hvm_rdtsc_intercept(regs); } @@ -3014,10 +3028,8 @@ void svm_vmexit_handler(struct cpu_user_regs *regs) break; case VMEXIT_RDTSCP: - regs->rcx = hvm_msr_tsc_aux(v); - /* fall through */ case VMEXIT_RDTSC: - svm_vmexit_do_rdtsc(regs); + svm_vmexit_do_rdtsc(regs, exit_reason == VMEXIT_RDTSCP); break; case VMEXIT_MONITOR: diff --git a/xen/arch/x86/hvm/vmx/vmx.c b/xen/arch/x86/hvm/vmx/vmx.c index 4a66eae9d0..f9e5d74d19 100644 --- a/xen/arch/x86/hvm/vmx/vmx.c +++ b/xen/arch/x86/hvm/vmx/vmx.c @@ -3566,6 +3566,7 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs) unsigned long exit_qualification, exit_reason, idtv_info, intr_info = 0; unsigned int vector = 0, mode; struct vcpu *v = current; + struct domain *currd = v->domain; __vmread(GUEST_RIP, ®s->rip); __vmread(GUEST_RSP, ®s->rsp); @@ -3933,6 +3934,13 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs) vmx_invlpg_intercept(exit_qualification); break; case EXIT_REASON_RDTSCP: + if ( !currd->arch.cpuid->extd.rdtscp && + currd->arch.tsc_mode != TSC_MODE_PVRDTSCP ) + { + hvm_inject_hw_exception(TRAP_invalid_op, X86_EVENT_NO_EC); + break; + } + regs->rcx = hvm_msr_tsc_aux(v); /* fall through */ case EXIT_REASON_RDTSC: diff --git a/xen/include/asm-x86/hvm/svm/emulate.h b/xen/include/asm-x86/hvm/svm/emulate.h index 3de8236301..ca92abbe28 100644 --- a/xen/include/asm-x86/hvm/svm/emulate.h +++ b/xen/include/asm-x86/hvm/svm/emulate.h @@ -30,6 +30,7 @@ enum instruction_index { INSTR_HLT, INSTR_INT3, INSTR_RDTSC, + INSTR_RDTSCP, INSTR_PAUSE, 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Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 887d5a7b-260e-11e9-bc90-bc764e045a96; Fri, 01 Feb 2019 10:45:47 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWKR-0004ed-5U for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:45:47 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpWKR-00047K-2w for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:45:47 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 10:45:47 +0000 Subject: [Xen-changelog] [xen staging-4.11] x86emul: work around SandyBridge errata X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: 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2019 10:45:58 +0000 X-Inumbo-ID: 8e8e7846-260e-11e9-9ff1-1b3c50b6d01e Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 8e8e7846-260e-11e9-9ff1-1b3c50b6d01e; Fri, 01 Feb 2019 10:45:57 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWKb-0004eu-BQ for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:45:57 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpWKb-00047z-92 for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:45:57 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 10:45:57 +0000 Subject: [Xen-changelog] [xen staging-4.11] mm/page_alloc: fix MEMF_no_dma allocations for single NUMA X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive 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xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:46:09 +0000 X-Inumbo-ID: 94a3a587-260e-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 94a3a587-260e-11e9-bc90-bc764e045a96; Fri, 01 Feb 2019 10:46:07 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWKl-0004fI-I2 for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:46:07 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpWKl-00049G-FX for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:46:07 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 10:46:07 +0000 Subject: [Xen-changelog] [xen staging-4.11] xen/cmdline: Fix buggy strncmp(s, LITERAL, ss - s) construct X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGUyMDJmZWI3MTMxZTY2ZWQ5MTg2YWQ4NzY2Yzk1ODI1MDJjOTg5OTgKQXV0aG9yOiAg ICAgQW5kcmV3IENvb3BlciA8YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT4KQXV0aG9yRGF0ZTog RnJpIEZlYiAxIDExOjM0OjM1IDIwMTkgKzAxMDAKQ29tbWl0OiAgICAgSmFuIEJldWxpY2ggPGpi ZXVsaWNoQHN1c2UuY29tPgpDb21taXREYXRlOiBGcmkgRmViIDEgMTE6MzQ6MzUgMjAxOSArMDEw MAoKICAgIHhlbi9jbWRsaW5lOiBGaXggYnVnZ3kgc3RybmNtcChzLCBMSVRFUkFMLCBzcyAtIHMp IGNvbnN0cnVjdAogICAgCiAgICBXaGVuIHRoZSBjb21tYW5kIGxpbmUgcGFyc2luZyB3YXMgdXBk YXRlZCB0byB1c2UgY29uc3Qgc3RyaW5ncyBhbmQgbm8gbG9uZ2VyCiAgICB0b2tlbmlzZSB3aXRo IE5VTCBjaGFyYWN0ZXJzLCBzdHJpbmcgbWF0Y2hlcyBjb3VsZCBubyBsb25nZXIgYmUgbWFkZSB3 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xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWKv-0004fQ-Ns for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:46:17 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpWKv-00049k-LX for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:46:17 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 10:46:17 +0000 Subject: [Xen-changelog] [xen staging-4.11] x86/AMD: flush TLB after ucode update X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" 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xen-changelog-bounces@lists.xenproject.org Fri Feb 01 10:46:30 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Fri, 01 Feb 2019 10:46:30 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWL8-0007kW-HV; Fri, 01 Feb 2019 10:46:30 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWL6-0007kN-PV for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:46:28 +0000 X-Inumbo-ID: a0c96e58-260e-11e9-a16d-0b6948b19938 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id a0c96e58-260e-11e9-a16d-0b6948b19938; Fri, 01 Feb 2019 10:46:28 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWL5-0004gD-UD for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:46:27 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpWL5-0004AD-Rh for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:46:27 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 10:46:27 +0000 Subject: [Xen-changelog] [xen staging-4.11] x86/hvm: Fix bit checking for CR4 and MSR_EFER X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDg1MGNhOTQwMDRlMzc1YjRmOWUwNGEwYTE0OGViYWQ3Njg1ZWZmY2MKQXV0aG9yOiAg 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mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWTR-0004q4-GJ for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:55:05 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpWTR-0004fm-Di for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:55:05 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 10:55:05 +0000 Subject: [Xen-changelog] [xen staging-4.10] VMX: fix vmx_handle_eoi() X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" 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xen-changelog-bounces@lists.xenproject.org Fri Feb 01 10:55:17 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Fri, 01 Feb 2019 10:55:17 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWTd-0000S5-J2; Fri, 01 Feb 2019 10:55:17 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWTc-0000Ry-Rq for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:55:16 +0000 X-Inumbo-ID: db61e83d-260f-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id db61e83d-260f-11e9-bc90-bc764e045a96; Fri, 01 Feb 2019 10:55:15 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWTb-0004qD-Mm for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:55:15 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpWTb-0004gJ-K4 for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:55:15 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 10:55:15 +0000 Subject: [Xen-changelog] [xen staging-4.10] x86/HVM: __hvm_copy() should not write to p2m_ioreq_server pages X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDcwZTcyOGJkNDRjMTM2NTIwNzQ1OGE4YzcxZmM2OGI5NmE4YzUxNWEKQXV0aG9yOiAg ICAgSmFuIEJldWxpY2ggPGpiZXVsaWNoQHN1c2UuY29tPgpBdXRob3JEYXRlOiBGcmkgRmViIDEg 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10:55:36 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 10:55:36 +0000 Subject: [Xen-changelog] [xen staging-4.10] x86/soft-reset: Drop gfn reference after calling get_gfn_query() X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGNiMTBiYjgyYTU5N2MxM2VkMzk4YzY1M2Q0MTVmOWZiYjhkNGRjNDEKQXV0aG9yOiAg ICAgQW5kcmV3IENvb3BlciA8YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT4KQXV0aG9yRGF0ZTog RnJpIEZlYiAxIDExOjQzOjM5IDIwMTkgKzAxMDAKQ29tbWl0OiAgICAgSmFuIEJldWxpY2ggPGpi ZXVsaWNoQHN1c2UuY29tPgpDb21taXREYXRlOiBGcmkgRmViIDEgMTE6NDM6MzkgMjAxOSArMDEw 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xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:55:46 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 10:55:46 +0000 Subject: [Xen-changelog] [xen staging-4.10] ns16550/PCI: fix skipping of devices X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDk1ZTJmNTc3ODhiNWUxODE0OTU3OGQzNGJmNGFmODgwMjA0OGI5YmIKQXV0aG9yOiAg ICAgSmFuIEJldWxpY2ggPGpiZXVsaWNoQHN1c2UuY29tPgpBdXRob3JEYXRlOiBGcmkgRmViIDEg MTE6NDQ6MTMgMjAxOSArMDEwMApDb21taXQ6ICAgICBKYW4gQmV1bGljaCA8amJldWxpY2hAc3Vz ZS5jb20+CkNvbW1pdERhdGU6IEZyaSBGZWIgMSAxMTo0NDoxMyAyMDE5ICswMTAwCgogICAgbnMx 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([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWUR-0000ZZ-LY for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:56:07 +0000 X-Inumbo-ID: f9c27dd8-260f-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id f9c27dd8-260f-11e9-bc90-bc764e045a96; Fri, 01 Feb 2019 10:56:06 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWUQ-0004ro-MA for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:56:06 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpWUQ-0004kI-J8 for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:56:06 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 10:56:06 +0000 Subject: [Xen-changelog] [xen staging-4.10] x86/VT-x: Don't activate VMCS Shadowing 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([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWUb-0000b7-Vk for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:56:18 +0000 X-Inumbo-ID: ffd33ffb-260f-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id ffd33ffb-260f-11e9-bc90-bc764e045a96; Fri, 01 Feb 2019 10:56:17 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWUa-0004rx-SP for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:56:16 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpWUa-0004kw-Q2 for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:56:16 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 10:56:16 +0000 Subject: [Xen-changelog] [xen staging-4.10] x86/hvm: Corrections to RDTSCP intercept handling X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============3186503216501071347==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============3186503216501071347== Content-Type: text/plain commit 5f428061a5b2dd980b3047c197b5ff9d9757e010 Author: Andrew Cooper AuthorDate: Fri Feb 1 11:46:06 2019 +0100 Commit: Jan Beulich CommitDate: Fri Feb 1 11:46:06 2019 +0100 x86/hvm: Corrections to RDTSCP intercept handling For both VT-x and SVM, the RDTSCP intercept will trigger if the pipeline supports the instruction, but the guest may not have RDTSCP in its featureset. Bring the vmexit handlers in line with the main emulator behaviour by optionally handing back #UD. Next on the AMD side, if RDTSCP actually ends up being intercepted on a debug build or first-gen SVM hardware which lacks NRIP, we first update regs->rcx, then call __get_instruction_length() asking for RDTSC. As the two instructions are different (and indeed, different lengths!), __get_instruction_length_from_list() fails and hands back a #GP fault. This can demonstrated by putting a guest into tsc_mode="always emulate" and executing an RDTSCP instruction: (d1) --- Xen Test Framework --- (d1) Environment: HVM 64bit (Long mode 4 levels) (d1) Test rdtscp (d1) TSC mode 1 (XEN) emulate.c:147:d1v0 __get_instruction_length: Mismatch between expected and actual instruction: (XEN) emulate.c:152:d1v0 insn_index 8, opcode 0xf0031 modrm 0 (XEN) emulate.c:154:d1v0 rip 0x10475f, nextrip 0x104762, len 3 (XEN) SVM insn len emulation failed (1): d1v0 64bit @ 0008:0010475f -> 0f 01 f9 0f 31 5b 31 ff 31 c0 e9 c2 db ff ff 00 (d1) ****************************** (d1) PANIC: Unhandled exception at 0008:000000000010475f (d1) Vec 13 #GP[0000] (d1) ****************************** First, teach __get_instruction_length() to cope with RDTSCP, and improve svm_vmexit_do_rdtsc() to ask for the correct instruction. Move the regs->rcx adjustment into this function to ensure it gets done after we are done potentially raising faults. Reported-by: Paul Durrant Signed-off-by: Andrew Cooper Reviewed-by: Brian Woods Reviewed-by: Jan Beulich Reviewed-by: Kevin Tian Reviewed-by: Roger Pau Monné master commit: 3fd3fda9c26fc3c4f77250f795ed7ff9d38e2ec6 master date: 2018-12-17 16:28:03 +0000 --- xen/arch/x86/hvm/svm/emulate.c | 1 + xen/arch/x86/hvm/svm/svm.c | 22 +++++++++++++++++----- xen/arch/x86/hvm/vmx/vmx.c | 8 ++++++++ xen/include/asm-x86/hvm/svm/emulate.h | 1 + 4 files changed, 27 insertions(+), 5 deletions(-) diff --git a/xen/arch/x86/hvm/svm/emulate.c b/xen/arch/x86/hvm/svm/emulate.c index e1a158103c..2614af1363 100644 --- a/xen/arch/x86/hvm/svm/emulate.c +++ b/xen/arch/x86/hvm/svm/emulate.c @@ -74,6 +74,7 @@ static const struct { [INSTR_STGI] = { X86EMUL_OPC(0x0f, 0x01), MODRM(3, 3, 4) }, [INSTR_CLGI] = { X86EMUL_OPC(0x0f, 0x01), MODRM(3, 3, 5) }, [INSTR_INVLPGA] = { X86EMUL_OPC(0x0f, 0x01), MODRM(3, 3, 7) }, + [INSTR_RDTSCP] = { X86EMUL_OPC(0x0f, 0x01), MODRM(3, 7, 1) }, [INSTR_INVD] = { X86EMUL_OPC(0x0f, 0x08) }, [INSTR_WBINVD] = { X86EMUL_OPC(0x0f, 0x09) }, [INSTR_WRMSR] = { X86EMUL_OPC(0x0f, 0x30) }, diff --git a/xen/arch/x86/hvm/svm/svm.c b/xen/arch/x86/hvm/svm/svm.c index aad3655855..25fc9f2288 100644 --- a/xen/arch/x86/hvm/svm/svm.c +++ b/xen/arch/x86/hvm/svm/svm.c @@ -2264,14 +2264,28 @@ static void svm_vmexit_do_hlt(struct vmcb_struct *vmcb, hvm_hlt(regs->eflags); } -static void svm_vmexit_do_rdtsc(struct cpu_user_regs *regs) +static void svm_vmexit_do_rdtsc(struct cpu_user_regs *regs, bool rdtscp) { + struct vcpu *curr = current; + const struct domain *currd = curr->domain; + enum instruction_index insn = rdtscp ? INSTR_RDTSCP : INSTR_RDTSC; unsigned int inst_len; - if ( (inst_len = __get_instruction_length(current, INSTR_RDTSC)) == 0 ) + if ( rdtscp && !currd->arch.cpuid->extd.rdtscp && + currd->arch.tsc_mode != TSC_MODE_PVRDTSCP ) + { + hvm_inject_hw_exception(TRAP_invalid_op, X86_EVENT_NO_EC); return; + } + + if ( (inst_len = __get_instruction_length(curr, insn)) == 0 ) + return; + __update_guest_eip(regs, inst_len); + if ( rdtscp ) + regs->rcx = hvm_msr_tsc_aux(curr); + hvm_rdtsc_intercept(regs); } @@ -2892,10 +2906,8 @@ void svm_vmexit_handler(struct cpu_user_regs *regs) break; case VMEXIT_RDTSCP: - regs->rcx = hvm_msr_tsc_aux(v); - /* fall through */ case VMEXIT_RDTSC: - svm_vmexit_do_rdtsc(regs); + svm_vmexit_do_rdtsc(regs, exit_reason == VMEXIT_RDTSCP); break; case VMEXIT_MONITOR: diff --git a/xen/arch/x86/hvm/vmx/vmx.c b/xen/arch/x86/hvm/vmx/vmx.c index a3ea3d4824..e28d7963b7 100644 --- a/xen/arch/x86/hvm/vmx/vmx.c +++ b/xen/arch/x86/hvm/vmx/vmx.c @@ -3595,6 +3595,7 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs) unsigned long exit_qualification, exit_reason, idtv_info, intr_info = 0; unsigned int vector = 0, mode; struct vcpu *v = current; + struct domain *currd = v->domain; __vmread(GUEST_RIP, ®s->rip); __vmread(GUEST_RSP, ®s->rsp); @@ -3958,6 +3959,13 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs) vmx_invlpg_intercept(exit_qualification); break; case EXIT_REASON_RDTSCP: + if ( !currd->arch.cpuid->extd.rdtscp && + currd->arch.tsc_mode != TSC_MODE_PVRDTSCP ) + { + hvm_inject_hw_exception(TRAP_invalid_op, X86_EVENT_NO_EC); + break; + } + regs->rcx = hvm_msr_tsc_aux(v); /* fall through */ case EXIT_REASON_RDTSC: diff --git a/xen/include/asm-x86/hvm/svm/emulate.h b/xen/include/asm-x86/hvm/svm/emulate.h index 7c1dcd186a..ccb654f1dd 100644 --- a/xen/include/asm-x86/hvm/svm/emulate.h +++ b/xen/include/asm-x86/hvm/svm/emulate.h @@ -30,6 +30,7 @@ enum instruction_index { INSTR_HLT, INSTR_INT3, INSTR_RDTSC, + INSTR_RDTSCP, INSTR_PAUSE, 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0bfdb28c-2610-11e9-8a25-cf2b5ed80333 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 0bfdb28c-2610-11e9-8a25-cf2b5ed80333; Fri, 01 Feb 2019 10:56:38 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWUv-0004ss-9V for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:56:37 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpWUv-0004mW-74 for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:56:37 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 10:56:37 +0000 Subject: [Xen-changelog] [xen staging-4.10] x86emul: work around SandyBridge errata X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: 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2019 10:56:48 +0000 X-Inumbo-ID: 12111a58-2610-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 12111a58-2610-11e9-bc90-bc764e045a96; Fri, 01 Feb 2019 10:56:47 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWV5-0004t4-Fi for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:56:47 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpWV5-0004o3-D5 for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:56:47 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 10:56:47 +0000 Subject: [Xen-changelog] [xen staging-4.10] mm/page_alloc: fix MEMF_no_dma allocations for single NUMA X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive 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xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:56:59 +0000 X-Inumbo-ID: 1826f36c-2610-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 1826f36c-2610-11e9-bc90-bc764e045a96; Fri, 01 Feb 2019 10:56:57 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWVF-0004tC-MV for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:56:57 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpWVF-0004of-K0 for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:56:57 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 10:56:57 +0000 Subject: [Xen-changelog] [xen staging-4.10] xen/cmdline: Fix buggy strncmp(s, LITERAL, ss - s) construct X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDk0OGViMDM3NTEyMDhhNDYxNDBlNzRiNGQ2YjljOTdhZmQ2MDg1MDAKQXV0aG9yOiAg ICAgQW5kcmV3IENvb3BlciA8YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT4KQXV0aG9yRGF0ZTog RnJpIEZlYiAxIDExOjQ4OjE3IDIwMTkgKzAxMDAKQ29tbWl0OiAgICAgSmFuIEJldWxpY2ggPGpi ZXVsaWNoQHN1c2UuY29tPgpDb21taXREYXRlOiBGcmkgRmViIDEgMTE6NDg6MTcgMjAxOSArMDEw MAoKICAgIHhlbi9jbWRsaW5lOiBGaXggYnVnZ3kgc3RybmNtcChzLCBMSVRFUkFMLCBzcyAtIHMp IGNvbnN0cnVjdAogICAgCiAgICBXaGVuIHRoZSBjb21tYW5kIGxpbmUgcGFyc2luZyB3YXMgdXBk YXRlZCB0byB1c2UgY29uc3Qgc3RyaW5ncyBhbmQgbm8gbG9uZ2VyCiAgICB0b2tlbmlzZSB3aXRo IE5VTCBjaGFyYWN0ZXJzLCBzdHJpbmcgbWF0Y2hlcyBjb3VsZCBubyBsb25nZXIgYmUgbWFkZSB3 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mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWVP-0004tb-SA for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:57:07 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpWVP-0004pS-Pt for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:57:07 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 10:57:07 +0000 Subject: [Xen-changelog] [xen staging-4.10] x86/AMD: flush TLB after ucode update X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" 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xen-changelog-bounces@lists.xenproject.org Fri Feb 01 10:57:20 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Fri, 01 Feb 2019 10:57:20 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWVc-0000ja-FL; Fri, 01 Feb 2019 10:57:20 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWVb-0000jR-Dw for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:57:19 +0000 X-Inumbo-ID: 244c8d7c-2610-11e9-b8f9-63a7330a5d98 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 244c8d7c-2610-11e9-b8f9-63a7330a5d98; Fri, 01 Feb 2019 10:57:18 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWVa-0004tn-2K for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:57:18 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpWVZ-0004q0-Vw for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 10:57:17 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 10:57:17 +0000 Subject: [Xen-changelog] [xen staging-4.10] x86/hvm: Fix bit checking for CR4 and MSR_EFER X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGQ1NTEzZGI5YzMyYzIxOTA1YzBhNzM3NzhhNTNmYTFhMjdmMzMyMWUKQXV0aG9yOiAg 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amVjdC5vcmcKaHR0cHM6Ly9saXN0cy54ZW5wcm9qZWN0Lm9yZy94ZW4tY2hhbmdlbG9n From xen-changelog-bounces@lists.xenproject.org Fri Feb 01 11:11:08 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Fri, 01 Feb 2019 11:11:08 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWix-0002dF-TR; Fri, 01 Feb 2019 11:11:07 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWix-0002dA-3m for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:11:07 +0000 X-Inumbo-ID: 1166bc1c-2612-11e9-89cf-d7ba7ce95e91 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 1166bc1c-2612-11e9-89cf-d7ba7ce95e91; Fri, 01 Feb 2019 11:11:05 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWiv-0005CD-Bm for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:11:05 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpWiv-0005yZ-94 for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:11:05 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 11:11:05 +0000 Subject: [Xen-changelog] [xen staging-4.9] VMX: fix vmx_handle_eoi() X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGZkNmFiMGU4N2VkYjJjYmJkNzlmNDkxNWFlYmYwODQ5OTY5NzExZjUKQXV0aG9yOiAg 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(envelope-from ) id 1gpWj5-0005z3-FR for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:11:15 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 11:11:15 +0000 Subject: [Xen-changelog] [xen staging-4.9] x86/HVM: __hvm_copy() should not write to p2m_ioreq_server pages X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGVkNGYwZTgzOTM5OWU4NGY1YTczYTk3MjA4MTc5ZjE4MTBiYjM3ZTkKQXV0aG9yOiAg ICAgSmFuIEJldWxpY2ggPGpiZXVsaWNoQHN1c2UuY29tPgpBdXRob3JEYXRlOiBGcmkgRmViIDEg MTI6MDA6NDUgMjAxOSArMDEwMApDb21taXQ6ICAgICBKYW4gQmV1bGljaCA8amJldWxpY2hAc3Vz 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11:11:38 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWjR-0002h3-7V for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:11:37 +0000 X-Inumbo-ID: 23a59193-2612-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 23a59193-2612-11e9-bc90-bc764e045a96; Fri, 01 Feb 2019 11:11:36 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWjP-0005DH-Uj for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:11:35 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpWjP-0005zy-SE for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:11:35 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 11:11:35 +0000 Subject: [Xen-changelog] [xen staging-4.9] x86/soft-reset: Drop gfn reference after calling get_gfn_query() X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDE5NDE0MmZmZjM5NGIxM2NjZDYwMTBmMzM1M2QzNDBkNGUzNTZiNzgKQXV0aG9yOiAg ICAgQW5kcmV3IENvb3BlciA8YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT4KQXV0aG9yRGF0ZTog RnJpIEZlYiAxIDEyOjAyOjE1IDIwMTkgKzAxMDAKQ29tbWl0OiAgICAgSmFuIEJldWxpY2ggPGpi ZXVsaWNoQHN1c2UuY29tPgpDb21taXREYXRlOiBGcmkgRmViIDEgMTI6MDI6MTUgMjAxOSArMDEw MAoKICAgIHg4Ni9zb2Z0LXJlc2V0OiBEcm9wIGdmbiByZWZlcmVuY2UgYWZ0ZXIgY2FsbGluZyBn ZXRfZ2ZuX3F1ZXJ5KCkKICAgIAogICAgZ2V0X2dmbl9xdWVyeSgpIGludGVybmFsbHkgdGFrZXMg 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+0000 Subject: [Xen-changelog] [xen staging-4.9] ns16550/PCI: fix skipping of devices X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDg0MGI1MjMzZjU0YmQwYTAwZjcxMmRlMzEwNTU4ZTgzMjRjZWM1YTYKQXV0aG9yOiAg ICAgSmFuIEJldWxpY2ggPGpiZXVsaWNoQHN1c2UuY29tPgpBdXRob3JEYXRlOiBGcmkgRmViIDEg MTI6MDI6NDUgMjAxOSArMDEwMApDb21taXQ6ICAgICBKYW4gQmV1bGljaCA8amJldWxpY2hAc3Vz ZS5jb20+CkNvbW1pdERhdGU6IEZyaSBGZWIgMSAxMjowMjo0NSAyMDE5ICswMTAwCgogICAgbnMx NjU1MC9QQ0k6IGZpeCBza2lwcGluZyBvZiBkZXZpY2VzCiAgICAKICAgIFNlbGVjdGluZyBiZXR3 ZWVuIHNpbmdsZS9tdWx0aXBsZSBCQVIgbW9kZSBzaG91bGQgaGFwcGVuIGFmdGVyIGNoZWNraW5n 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xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:12:07 +0000 X-Inumbo-ID: 35dc1600-2612-11e9-bb65-8b89b41a10ff Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 35dc1600-2612-11e9-bb65-8b89b41a10ff; Fri, 01 Feb 2019 11:12:06 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWju-0005Dw-H1 for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:12:06 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpWju-00062h-EW for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:12:06 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 11:12:06 +0000 Subject: [Xen-changelog] [xen staging-4.9] x86/VT-x: Don't activate VMCS Shadowing outside of nested vmx mode X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDRmOWE0ODY4OTliNjQzYTMxNDNhNzdhMDMyZjZjMjA2OWNiMWU0MGEKQXV0aG9yOiAg ICAgQW5kcmV3IENvb3BlciA8YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT4KQXV0aG9yRGF0ZTog RnJpIEZlYiAxIDEyOjA0OjAzIDIwMTkgKzAxMDAKQ29tbWl0OiAgICAgSmFuIEJldWxpY2ggPGpi ZXVsaWNoQHN1c2UuY29tPgpDb21taXREYXRlOiBGcmkgRmViIDEgMTI6MDQ6MDMgMjAxOSArMDEw MAoKICAgIHg4Ni9WVC14OiBEb24ndCBhY3RpdmF0ZSBWTUNTIFNoYWRvd2luZyBvdXRzaWRlIG9m IG5lc3RlZCB2bXggbW9kZQogICAgCiAgICBCeSBkZWZhdWx0IG9uIGNhcGFibGUgaGFyZHdhcmUs IFNFQ09OREFSWV9FWEVDX0VOQUJMRV9WTUNTX1NIQURPV0lORyBpcwogICAgYWN0aXZhdGVkIHVu aWxhdGVyYWxseS4gIFRoZSBWTUNTIExpbmsgcG9pbnRlciBpcyBpbml0aWFsaXNlZCB0byB+MCwg 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1gpWk6-0002mJ-BW for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:12:18 +0000 X-Inumbo-ID: 3bf34774-2612-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 3bf34774-2612-11e9-bc90-bc764e045a96; Fri, 01 Feb 2019 11:12:17 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWk4-0005E4-NW for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:12:16 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpWk4-000637-L2 for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:12:16 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 11:12:16 +0000 Subject: [Xen-changelog] [xen staging-4.9] x86/hvm: Corrections to RDTSCP intercept handling X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============7464971561522041537==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============7464971561522041537== Content-Type: text/plain commit 3a3f48a59e4269c6111e2c30f31a49d76322bf65 Author: Andrew Cooper AuthorDate: Fri Feb 1 12:04:41 2019 +0100 Commit: Jan Beulich CommitDate: Fri Feb 1 12:04:41 2019 +0100 x86/hvm: Corrections to RDTSCP intercept handling For both VT-x and SVM, the RDTSCP intercept will trigger if the pipeline supports the instruction, but the guest may not have RDTSCP in its featureset. Bring the vmexit handlers in line with the main emulator behaviour by optionally handing back #UD. Next on the AMD side, if RDTSCP actually ends up being intercepted on a debug build or first-gen SVM hardware which lacks NRIP, we first update regs->rcx, then call __get_instruction_length() asking for RDTSC. As the two instructions are different (and indeed, different lengths!), __get_instruction_length_from_list() fails and hands back a #GP fault. This can demonstrated by putting a guest into tsc_mode="always emulate" and executing an RDTSCP instruction: (d1) --- Xen Test Framework --- (d1) Environment: HVM 64bit (Long mode 4 levels) (d1) Test rdtscp (d1) TSC mode 1 (XEN) emulate.c:147:d1v0 __get_instruction_length: Mismatch between expected and actual instruction: (XEN) emulate.c:152:d1v0 insn_index 8, opcode 0xf0031 modrm 0 (XEN) emulate.c:154:d1v0 rip 0x10475f, nextrip 0x104762, len 3 (XEN) SVM insn len emulation failed (1): d1v0 64bit @ 0008:0010475f -> 0f 01 f9 0f 31 5b 31 ff 31 c0 e9 c2 db ff ff 00 (d1) ****************************** (d1) PANIC: Unhandled exception at 0008:000000000010475f (d1) Vec 13 #GP[0000] (d1) ****************************** First, teach __get_instruction_length() to cope with RDTSCP, and improve svm_vmexit_do_rdtsc() to ask for the correct instruction. Move the regs->rcx adjustment into this function to ensure it gets done after we are done potentially raising faults. Reported-by: Paul Durrant Signed-off-by: Andrew Cooper Reviewed-by: Brian Woods Reviewed-by: Jan Beulich Reviewed-by: Kevin Tian Reviewed-by: Roger Pau Monné master commit: 3fd3fda9c26fc3c4f77250f795ed7ff9d38e2ec6 master date: 2018-12-17 16:28:03 +0000 --- xen/arch/x86/hvm/svm/emulate.c | 1 + xen/arch/x86/hvm/svm/svm.c | 22 +++++++++++++++++----- xen/arch/x86/hvm/vmx/vmx.c | 8 ++++++++ xen/include/asm-x86/hvm/svm/emulate.h | 1 + 4 files changed, 27 insertions(+), 5 deletions(-) diff --git a/xen/arch/x86/hvm/svm/emulate.c b/xen/arch/x86/hvm/svm/emulate.c index e1a158103c..2614af1363 100644 --- a/xen/arch/x86/hvm/svm/emulate.c +++ b/xen/arch/x86/hvm/svm/emulate.c @@ -74,6 +74,7 @@ static const struct { [INSTR_STGI] = { X86EMUL_OPC(0x0f, 0x01), MODRM(3, 3, 4) }, [INSTR_CLGI] = { X86EMUL_OPC(0x0f, 0x01), MODRM(3, 3, 5) }, [INSTR_INVLPGA] = { X86EMUL_OPC(0x0f, 0x01), MODRM(3, 3, 7) }, + [INSTR_RDTSCP] = { X86EMUL_OPC(0x0f, 0x01), MODRM(3, 7, 1) }, [INSTR_INVD] = { X86EMUL_OPC(0x0f, 0x08) }, [INSTR_WBINVD] = { X86EMUL_OPC(0x0f, 0x09) }, [INSTR_WRMSR] = { X86EMUL_OPC(0x0f, 0x30) }, diff --git a/xen/arch/x86/hvm/svm/svm.c b/xen/arch/x86/hvm/svm/svm.c index 155a1877b8..55b1498e9d 100644 --- a/xen/arch/x86/hvm/svm/svm.c +++ b/xen/arch/x86/hvm/svm/svm.c @@ -2226,14 +2226,28 @@ static void svm_vmexit_do_hlt(struct vmcb_struct *vmcb, hvm_hlt(regs->eflags); } -static void svm_vmexit_do_rdtsc(struct cpu_user_regs *regs) +static void svm_vmexit_do_rdtsc(struct cpu_user_regs *regs, bool rdtscp) { + struct vcpu *curr = current; + const struct domain *currd = curr->domain; + enum instruction_index insn = rdtscp ? INSTR_RDTSCP : INSTR_RDTSC; unsigned int inst_len; - if ( (inst_len = __get_instruction_length(current, INSTR_RDTSC)) == 0 ) + if ( rdtscp && !currd->arch.cpuid->extd.rdtscp && + currd->arch.tsc_mode != TSC_MODE_PVRDTSCP ) + { + hvm_inject_hw_exception(TRAP_invalid_op, X86_EVENT_NO_EC); return; + } + + if ( (inst_len = __get_instruction_length(curr, insn)) == 0 ) + return; + __update_guest_eip(regs, inst_len); + if ( rdtscp ) + regs->rcx = hvm_msr_tsc_aux(curr); + hvm_rdtsc_intercept(regs); } @@ -2854,10 +2868,8 @@ void svm_vmexit_handler(struct cpu_user_regs *regs) break; case VMEXIT_RDTSCP: - regs->rcx = hvm_msr_tsc_aux(v); - /* fall through */ case VMEXIT_RDTSC: - svm_vmexit_do_rdtsc(regs); + svm_vmexit_do_rdtsc(regs, exit_reason == VMEXIT_RDTSCP); break; case VMEXIT_MONITOR: diff --git a/xen/arch/x86/hvm/vmx/vmx.c b/xen/arch/x86/hvm/vmx/vmx.c index 9f97f388c9..5042a86515 100644 --- a/xen/arch/x86/hvm/vmx/vmx.c +++ b/xen/arch/x86/hvm/vmx/vmx.c @@ -3628,6 +3628,7 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs) unsigned long exit_qualification, exit_reason, idtv_info, intr_info = 0; unsigned int vector = 0, mode; struct vcpu *v = current; + struct domain *currd = v->domain; __vmread(GUEST_RIP, ®s->rip); __vmread(GUEST_RSP, ®s->rsp); @@ -3991,6 +3992,13 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs) vmx_invlpg_intercept(exit_qualification); break; case EXIT_REASON_RDTSCP: + if ( !currd->arch.cpuid->extd.rdtscp && + currd->arch.tsc_mode != TSC_MODE_PVRDTSCP ) + { + hvm_inject_hw_exception(TRAP_invalid_op, X86_EVENT_NO_EC); + break; + } + regs->rcx = hvm_msr_tsc_aux(v); /* fall through */ case EXIT_REASON_RDTSC: diff --git a/xen/include/asm-x86/hvm/svm/emulate.h b/xen/include/asm-x86/hvm/svm/emulate.h index 7c1dcd186a..ccb654f1dd 100644 --- a/xen/include/asm-x86/hvm/svm/emulate.h +++ b/xen/include/asm-x86/hvm/svm/emulate.h @@ -30,6 +30,7 @@ enum instruction_index { INSTR_HLT, INSTR_INT3, INSTR_RDTSC, + INSTR_RDTSCP, INSTR_PAUSE, 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xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:12:59 +0000 X-Inumbo-ID: 543eee2d-2612-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 543eee2d-2612-11e9-bc90-bc764e045a96; Fri, 01 Feb 2019 11:12:57 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWkj-0005FK-GM for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:12:57 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpWkj-00065C-Dy for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:12:57 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 11:12:57 +0000 Subject: [Xen-changelog] [xen staging-4.9] x86/AMD: flush TLB after ucode update X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change 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[104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 5a523f71-2612-11e9-bc90-bc764e045a96; Fri, 01 Feb 2019 11:13:07 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpWkt-0005Fh-Me for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:13:07 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpWkt-00065v-K5 for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:13:07 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 11:13:07 +0000 Subject: [Xen-changelog] [xen staging-4.9] x86/hvm: Fix bit checking for CR4 and MSR_EFER X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 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xen-changelog-bounces@lists.xenproject.org Fri Feb 01 11:44:08 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Fri, 01 Feb 2019 11:44:08 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpXEs-0006F3-R1; Fri, 01 Feb 2019 11:44:06 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpXEs-0006Ey-0i for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:44:06 +0000 X-Inumbo-ID: ad757493-2616-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id ad757493-2616-11e9-bc90-bc764e045a96; Fri, 01 Feb 2019 11:44:05 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpXEr-0005p9-4r for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:44:05 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpXEr-0007yS-1y for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:44:05 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 11:44:05 +0000 Subject: [Xen-changelog] [xen staging-4.11] correct release note link in SUPPORT.md X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGUyZTNhMWQ3NTc5ODc4MWE4MDMxZmVlYzAwNTBlNmUxYzk4MTg3Y2EKQXV0aG9yOiAg ICAgSnVlcmdlbiBHcm9zcyA8amdyb3NzQHN1c2UuY29tPgpBdXRob3JEYXRlOiBGcmkgRmViIDEg 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xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:44:17 +0000 X-Inumbo-ID: b3cd3385-2616-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id b3cd3385-2616-11e9-bc90-bc764e045a96; Fri, 01 Feb 2019 11:44:16 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpXF1-0005pH-Pc for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:44:15 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpXF1-0007zH-Mv for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:44:15 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 11:44:15 +0000 Subject: [Xen-changelog] [xen staging-4.10] correct release note link in SUPPORT.md X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDA2OTVlNjcxMDJkZTZiNzM3YmFmMWI4OGUyY2RmY2NiYjJjYjU2ZmEKQXV0aG9yOiAg ICAgSnVlcmdlbiBHcm9zcyA8amdyb3NzQHN1c2UuY29tPgpBdXRob3JEYXRlOiBGcmkgRmViIDEg MTI6Mzc6MTcgMjAxOSArMDEwMApDb21taXQ6ICAgICBKYW4gQmV1bGljaCA8amJldWxpY2hAc3Vz ZS5jb20+CkNvbW1pdERhdGU6IEZyaSBGZWIgMSAxMjozNzoxNyAyMDE5ICswMTAwCgogICAgY29y cmVjdCByZWxlYXNlIG5vdGUgbGluayBpbiBTVVBQT1JULm1kCiAgICAKICAgIFRoZSBzeW50YXgg Zm9yIHRoZSByZWxlYXNlIG5vdGUgbGluayBpbiBTVVBQT1JULm1kIGlzIHdyb25nLiBDb3JyZWN0 CiAgICB0aGF0LgogICAgCiAgICBTaWduZWQtb2ZmLWJ5OiBKdWVyZ2VuIEdyb3NzIDxqZ3Jvc3NA c3VzZS5jb20+Ci0tLQogU1VQUE9SVC5tZCB8IDQgKysrLQogMSBmaWxlIGNoYW5nZWQsIDMgaW5z 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b3JnL3hlbi1jaGFuZ2Vsb2c= From xen-changelog-bounces@lists.xenproject.org Fri Feb 01 11:55:09 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Fri, 01 Feb 2019 11:55:09 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpXPY-0007QL-Mh; Fri, 01 Feb 2019 11:55:08 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpXPX-0007QG-Fm for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:55:07 +0000 X-Inumbo-ID: 371c64ec-2618-11e9-a837-ebb0c0bb3dc8 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 371c64ec-2618-11e9-a837-ebb0c0bb3dc8; Fri, 01 Feb 2019 11:55:05 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpXPV-00062m-IL 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bmRpZiAvKiBfX0FTTV9YODZfSFZNX1NWTV9FTVVMQVRFX0hfXyAqLwogCi0tCmdlbmVyYXRlZCBi eSBnaXQtcGF0Y2hib3QgZm9yIC9ob21lL3hlbi9naXQveGVuLmdpdCNzdGFnaW5nCgpfX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tY2hhbmdlbG9nIG1h aWxpbmcgbGlzdApYZW4tY2hhbmdlbG9nQGxpc3RzLnhlbnByb2plY3Qub3JnCmh0dHBzOi8vbGlz dHMueGVucHJvamVjdC5vcmcveGVuLWNoYW5nZWxvZw== From xen-changelog-bounces@lists.xenproject.org Fri Feb 01 11:55:18 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Fri, 01 Feb 2019 11:55:18 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpXPi-0007Rm-OP; Fri, 01 Feb 2019 11:55:18 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpXPh-0007Rf-Lg for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:55:17 +0000 X-Inumbo-ID: 3d28f7b5-2618-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 3d28f7b5-2618-11e9-bc90-bc764e045a96; Fri, 01 Feb 2019 11:55:16 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpXPf-00062v-OJ for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:55:15 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpXPf-0008TG-Lu for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:55:15 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 11:55:15 +0000 Subject: [Xen-changelog] [xen staging] x86/svm: Drop enum instruction_index and simplify svm_get_insn_len() X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: 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(Halon) with ESMTPS id 433d4ed0-2618-11e9-b28e-93bb5b8119ac; Fri, 01 Feb 2019 11:55:26 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpXPp-00063V-UC for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:55:25 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpXPp-0008U0-Rn for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 11:55:25 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 11:55:25 +0000 Subject: [Xen-changelog] [xen staging] x86/svm: Improve diagnostics when svm_get_insn_len() fails X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; 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from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpXez-00014m-SF for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 12:11:05 +0000 X-Inumbo-ID: 72996f28-261a-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 72996f28-261a-11e9-bc90-bc764e045a96; Fri, 01 Feb 2019 12:11:04 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpXey-0006OF-D0 for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 12:11:04 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpXey-0001Fm-AQ for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 12:11:04 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 12:11:04 +0000 Subject: [Xen-changelog] [xen staging] libxl: When restricted, start QEMU paused X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGFlMjlhYTBmOGZkZmJkNDFkNWVhNzFhMTMzOGZjNjMzMDU2MmNmZjMKQXV0aG9yOiAg ICAgQW50aG9ueSBQRVJBUkQgPGFudGhvbnkucGVyYXJkQGNpdHJpeC5jb20+CkF1dGhvckRhdGU6 IFRodSBKYW4gMzEgMTA6NTc6NDggMjAxOSArMDAwMApDb21taXQ6ICAgICBXZWkgTGl1IDx3ZWku bGl1MkBjaXRyaXguY29tPgpDb21taXREYXRlOiBGcmkgRmViIDEgMTI6MDI6NDEgMjAxOSArMDAw MAoKICAgIGxpYnhsOiBXaGVuIHJlc3RyaWN0ZWQsIHN0YXJ0IFFFTVUgcGF1c2VkCiAgICAKICAg IGxpYnhsIHJ1bnMgdGhlIGNvbW1hbmQgImNvbnQiIGxhdGVyIGR1cmluZyBndWVzdCBjcmVhdGlv bjsgaS5lLiBpdAogICAgaXMgZXhwZWN0aW5nIHRoYXQgUUVNVSB3b3VsZCBub3QgZG8gYW55IGVt 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xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpbvB-0003k4-3R for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 16:44:05 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpbvB-0006w2-0s for xen-changelog@lists.xenproject.org; Fri, 01 Feb 2019 16:44:05 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 01 Feb 2019 16:44:05 +0000 Subject: [Xen-changelog] [xen staging] automation: introduce a QEMU smoke test for PVH Dom0 X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" 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8b7d7fb8-26ad-11e9-be4f-5b66dd6abdb1; Sat, 02 Feb 2019 05:44:02 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpo5y-0006Jb-4n for xen-changelog@lists.xenproject.org; Sat, 02 Feb 2019 05:44:02 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpo5y-0007Uc-1r for xen-changelog@lists.xenproject.org; Sat, 02 Feb 2019 05:44:02 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Sat, 02 Feb 2019 05:44:02 +0000 Subject: [Xen-changelog] [xen stable-4.11] xen/arm: smccc-1.1: Make return values unsigned long X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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X-Inumbo-ID: 918b46ec-26ad-11e9-98bc-0b47b219326c Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 918b46ec-26ad-11e9-98bc-0b47b219326c; Sat, 02 Feb 2019 05:44:12 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpo68-0006Jn-Aw for xen-changelog@lists.xenproject.org; Sat, 02 Feb 2019 05:44:12 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpo68-0007VA-8P for xen-changelog@lists.xenproject.org; Sat, 02 Feb 2019 05:44:12 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Sat, 02 Feb 2019 05:44:12 +0000 Subject: [Xen-changelog] [xen stable-4.11] xen/arm: smccc-1.1: Handle function result as parameters X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDBiZTU0NDM4NzMxZmE2MzQ1ZjE0ZjA3OWE4MmY2ZWIxYzhiOGRiNDUKQXV0aG9yOiAg ICAgTWFyYyBaeW5naWVyIDxtYXJjLnp5bmdpZXJAYXJtLmNvbT4KQXV0aG9yRGF0ZTogVHVlIFNl cCAyNSAxODoyMDozOSAyMDE4ICswMTAwCkNvbW1pdDogICAgIFN0ZWZhbm8gU3RhYmVsbGluaSA8 c3N0YWJlbGxpbmlAa2VybmVsLm9yZz4KQ29tbWl0RGF0ZTogRnJpIEphbiAyNSAxNDoyMDowNiAy MDE5IC0wODAwCgogICAgeGVuL2FybTogc21jY2MtMS4xOiBIYW5kbGUgZnVuY3Rpb24gcmVzdWx0 IGFzIHBhcmFtZXRlcnMKICAgIAogICAgSWYgc29tZW9uZSBoYXMgdGhlIHNpbGx5IGlkZWEgdG8g d3JpdGUgc29tZXRoaW5nIGFsb25nIHRob3NlIGxpbmVzOgogICAgCiAgICAgICAgICAgIGV4dGVy biB1NjQgZm9vKHZvaWQpOwogICAgCiAgICAgICAgICAgIHZvaWQgYmFyKHN0cnVjdCBhcm1fc21j Y2NfcmVzICpyZXMpCiAgICAgICAgICAgIHsKICAgICAgICAgICAgICAgICAgICBhcm1fc21jY2Nf 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ZS94ZW4vZ2l0L3hlbi5naXQjc3RhYmxlLTQuMTEKCl9fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fClhlbi1jaGFuZ2Vsb2cgbWFpbGluZyBsaXN0Clhlbi1jaGFu Z2Vsb2dAbGlzdHMueGVucHJvamVjdC5vcmcKaHR0cHM6Ly9saXN0cy54ZW5wcm9qZWN0Lm9yZy94 ZW4tY2hhbmdlbG9n From xen-changelog-bounces@lists.xenproject.org Sat Feb 02 05:44:25 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Sat, 02 Feb 2019 05:44:25 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpo6L-00043j-NN; Sat, 02 Feb 2019 05:44:25 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpo6K-00043a-Dh for xen-changelog@lists.xenproject.org; Sat, 02 Feb 2019 05:44:24 +0000 X-Inumbo-ID: 979e83e1-26ad-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 979e83e1-26ad-11e9-bc90-bc764e045a96; Sat, 02 Feb 2019 05:44:23 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpo6I-0006Jv-HJ for xen-changelog@lists.xenproject.org; Sat, 02 Feb 2019 05:44:22 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpo6I-0007Vi-EW for xen-changelog@lists.xenproject.org; Sat, 02 Feb 2019 05:44:22 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Sat, 02 Feb 2019 05:44:22 +0000 Subject: [Xen-changelog] [xen stable-4.11] xen/arm: gic: Ensure we have an ISB between ack and do_IRQ() X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpo6U-00044p-Hb for xen-changelog@lists.xenproject.org; Sat, 02 Feb 2019 05:44:34 +0000 X-Inumbo-ID: 9db45e1c-26ad-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 9db45e1c-26ad-11e9-bc90-bc764e045a96; Sat, 02 Feb 2019 05:44:33 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpo6S-0006K4-NT for xen-changelog@lists.xenproject.org; Sat, 02 Feb 2019 05:44:32 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpo6S-0007WC-Kq for xen-changelog@lists.xenproject.org; Sat, 02 Feb 2019 05:44:32 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Sat, 02 Feb 2019 05:44:32 +0000 Subject: [Xen-changelog] [xen stable-4.11] xen/arm: gic: 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xen-changelog@lists.xenproject.org; Sat, 02 Feb 2019 05:44:43 +0000 X-Inumbo-ID: a3c45c5e-26ad-11e9-a880-5fe2b247219c Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id a3c45c5e-26ad-11e9-a880-5fe2b247219c; Sat, 02 Feb 2019 05:44:43 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpo6c-0006L0-TX for xen-changelog@lists.xenproject.org; Sat, 02 Feb 2019 05:44:42 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpo6c-0007Wj-Qx for xen-changelog@lists.xenproject.org; Sat, 02 Feb 2019 05:44:42 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Sat, 02 Feb 2019 05:44:42 +0000 Subject: [Xen-changelog] [xen stable-4.11] xen/arm: check for multiboot nodes only under /chosen X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list 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id 1gpo6p-000480-Ui; Sat, 02 Feb 2019 05:44:55 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpo6o-00047m-5g for xen-changelog@lists.xenproject.org; Sat, 02 Feb 2019 05:44:54 +0000 X-Inumbo-ID: a9d6f32f-26ad-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id a9d6f32f-26ad-11e9-bc90-bc764e045a96; Sat, 02 Feb 2019 05:44:53 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpo6n-0006M0-3O for xen-changelog@lists.xenproject.org; Sat, 02 Feb 2019 05:44:53 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpo6n-0007XF-0p for xen-changelog@lists.xenproject.org; Sat, 02 Feb 2019 05:44:53 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Sat, 02 Feb 2019 05:44:53 +0000 Subject: [Xen-changelog] [xen stable-4.11] xen/arm: vgic-v3: Delay the initialization of the domain information X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDAxNWIwMGZmMzU4MWQ1ZjgzY2JjMGVhOTZlYmRjMzkwMGYxMjA1M2UKQXV0aG9yOiAg ICAgSnVsaWVuIEdyYWxsIDxqdWxpZW4uZ3JhbGxAYXJtLmNvbT4KQXV0aG9yRGF0ZTogTW9uIE9j dCAxIDE3OjQyOjI2IDIwMTggKzAxMDAKQ29tbWl0OiAgICAgU3RlZmFubyBTdGFiZWxsaW5pIDxz c3RhYmVsbGluaUBrZXJuZWwub3JnPgpDb21taXREYXRlOiBGcmkgSmFuIDI1IDE3OjA5OjE4IDIw MTkgLTA4MDAKCiAgICB4ZW4vYXJtOiB2Z2ljLXYzOiBEZWxheSB0aGUgaW5pdGlhbGl6YXRpb24g 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Cmh0dHBzOi8vbGlzdHMueGVucHJvamVjdC5vcmcveGVuLWNoYW5nZWxvZw== From xen-changelog-bounces@lists.xenproject.org Sat Feb 02 05:45:07 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Sat, 02 Feb 2019 05:45:07 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpo71-00049F-0D; Sat, 02 Feb 2019 05:45:07 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpo6z-000497-3Z for xen-changelog@lists.xenproject.org; Sat, 02 Feb 2019 05:45:05 +0000 X-Inumbo-ID: afeb8c8c-26ad-11e9-88fc-3305c374c68f Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id afeb8c8c-26ad-11e9-88fc-3305c374c68f; Sat, 02 Feb 2019 05:45:03 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpo6x-0006Ma-9f for xen-changelog@lists.xenproject.org; Sat, 02 Feb 2019 05:45:03 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpo6x-0007Y8-76 for xen-changelog@lists.xenproject.org; Sat, 02 Feb 2019 05:45:03 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Sat, 02 Feb 2019 05:45:03 +0000 Subject: [Xen-changelog] [xen stable-4.11] xen/arm: vgic-v3: Don't create empty re-distributor regions X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDE0YjdkYzExNWI4YTVkOTBjZjg0MmFjMDAzMTAwNTQyNDA4ZjY3MWMKQXV0aG9yOiAg 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[104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id b5fec804-26ad-11e9-bc90-bc764e045a96; Sat, 02 Feb 2019 05:45:13 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gpo77-0006Mi-FU for xen-changelog@lists.xenproject.org; Sat, 02 Feb 2019 05:45:13 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gpo77-0007Yi-D4 for xen-changelog@lists.xenproject.org; Sat, 02 Feb 2019 05:45:13 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Sat, 02 Feb 2019 05:45:13 +0000 Subject: [Xen-changelog] [xen stable-4.11] xen/arm: Don't build GICv3 with the new vGIC X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 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mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqXdr-0003ep-2i for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 06:22:03 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqXdq-0001FP-W2 for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 06:22:02 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 06:22:02 +0000 Subject: [Xen-changelog] [xen master] xen/arm: gic-vgic: Fix the assert condition in vgic_connect_hw_irq X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" 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Y2hhbmdlbG9nIG1haWxpbmcgbGlzdApYZW4tY2hhbmdlbG9nQGxpc3RzLnhlbnByb2plY3Qub3Jn Cmh0dHBzOi8vbGlzdHMueGVucHJvamVjdC5vcmcveGVuLWNoYW5nZWxvZw== From xen-changelog-bounces@lists.xenproject.org Mon Feb 04 06:22:26 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 04 Feb 2019 06:22:26 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqXeE-0000eK-Ss; Mon, 04 Feb 2019 06:22:26 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqXeD-0000e9-E4 for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 06:22:25 +0000 X-Inumbo-ID: 3c03d3df-2845-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 3c03d3df-2845-11e9-bc90-bc764e045a96; Mon, 04 Feb 2019 06:22:24 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqXeB-0003fk-Fz for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 06:22:23 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqXeB-0001GP-DE for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 06:22:23 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 06:22:23 +0000 Subject: [Xen-changelog] [xen master] xen/cmdline: Work around some specific command line warnings X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" 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mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqXeL-0003fs-M5 for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 06:22:33 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqXeL-0001Gp-JV for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 06:22:33 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 06:22:33 +0000 Subject: [Xen-changelog] [xen master] tools: fix build dependency upon generated header(s) X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" 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Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 04 Feb 2019 06:22:49 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqXeb-0000gp-0J; Mon, 04 Feb 2019 06:22:49 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqXeZ-0000gf-RP for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 06:22:47 +0000 X-Inumbo-ID: 482cf934-2845-11e9-8fa2-7f5295fa4005 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 482cf934-2845-11e9-8fa2-7f5295fa4005; Mon, 04 Feb 2019 06:22:44 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqXeV-0003g1-T3 for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 06:22:43 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqXeV-0001HK-QF for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 06:22:43 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 06:22:43 +0000 Subject: [Xen-changelog] [xen master] x86emul: correct AVX512BW write masking checks X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGY1ZDdkMzcwNDAwNjEzYTAxY2ExYzllMzhkN2NlOWIxZmFlYTMyZjMKQXV0aG9yOiAg ICAgSmFuIEJldWxpY2ggPGpiZXVsaWNoQHN1c2UuY29tPgpBdXRob3JEYXRlOiBUaHUgSmFuIDMx IDExOjM4OjI0IDIwMTkgKzAxMDAKQ29tbWl0OiAgICAgSmFuIEJldWxpY2ggPGpiZXVsaWNoQHN1 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(Halon) with ESMTPS id 4e426c81-2845-11e9-bc90-bc764e045a96; Mon, 04 Feb 2019 06:22:54 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqXeg-0003g9-3i for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 06:22:54 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqXeg-0001Hm-0y for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 06:22:54 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 06:22:54 +0000 Subject: [Xen-changelog] [xen master] x86/svm: Remove list functionality from __get_instruction_length_* infrastructure X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: 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helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqXer-0000jS-6O for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 06:23:05 +0000 X-Inumbo-ID: 54534600-2845-11e9-99cc-dbda9a36b8b1 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 54534600-2845-11e9-99cc-dbda9a36b8b1; Mon, 04 Feb 2019 06:23:04 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqXeq-0003gW-9q for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 06:23:04 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqXeq-0001IS-7G for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 06:23:04 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 06:23:04 +0000 Subject: [Xen-changelog] [xen master] x86/svm: Drop enum 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lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqXf2-0000kp-11 for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 06:23:16 +0000 X-Inumbo-ID: 5a64e9c9-2845-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 5a64e9c9-2845-11e9-bc90-bc764e045a96; Mon, 04 Feb 2019 06:23:14 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqXf0-0003h6-Fl for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 06:23:14 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqXf0-0001J1-DL for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 06:23:14 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 06:23:14 +0000 Subject: [Xen-changelog] [xen master] x86/svm: Improve diagnostics when svm_get_insn_len() fails 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04 06:23:28 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 04 Feb 2019 06:23:28 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqXfE-0000mj-AN; Mon, 04 Feb 2019 06:23:28 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqXfC-0000mY-Ca for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 06:23:26 +0000 X-Inumbo-ID: 607990d4-2845-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 607990d4-2845-11e9-bc90-bc764e045a96; Mon, 04 Feb 2019 06:23:24 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqXfA-0003hE-MI for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 06:23:24 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqXfA-0001JX-Jc for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 06:23:24 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 06:23:24 +0000 Subject: [Xen-changelog] [xen master] libxl: When restricted, start QEMU paused X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGFlMjlhYTBmOGZkZmJkNDFkNWVhNzFhMTMzOGZjNjMzMDU2MmNmZjMKQXV0aG9yOiAg ICAgQW50aG9ueSBQRVJBUkQgPGFudGhvbnkucGVyYXJkQGNpdHJpeC5jb20+CkF1dGhvckRhdGU6 IFRodSBKYW4gMzEgMTA6NTc6NDggMjAxOSArMDAwMApDb21taXQ6ICAgICBXZWkgTGl1IDx3ZWku 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X-Inumbo-ID: 668cff02-2845-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 668cff02-2845-11e9-bc90-bc764e045a96; Mon, 04 Feb 2019 06:23:35 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqXfK-0003hM-ST for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 06:23:34 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqXfK-0001KI-Py for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 06:23:34 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 06:23:34 +0000 Subject: [Xen-changelog] [xen master] automation: introduce a QEMU smoke test for PVH Dom0 X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , 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(Exim 4.89) (envelope-from ) id 1gqbYr-0007RS-NF for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 10:33:09 +0000 X-Inumbo-ID: 41670356-2868-11e9-b0f5-af426de13d78 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 41670356-2868-11e9-b0f5-af426de13d78; Mon, 04 Feb 2019 10:33:05 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqbYm-0000bD-Tm for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 10:33:04 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqbYm-0004Vu-Qq for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 10:33:04 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 10:33:04 +0000 Subject: [Xen-changelog] [xen staging-4.10] x86emul/test: fix build after "x86emul: fix 3-operand IMUL" X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDgwYzI5NTU3NzdhZDA3NTZkYWU1ZjBkMzFhZjllNTMxZWIyN2M0ZDIKQXV0aG9yOiAg ICAgSmFuIEJldWxpY2ggPGpiZXVsaWNoQHN1c2UuY29tPgpBdXRob3JEYXRlOiBNb24gRmViIDQg MTE6MzI6NDIgMjAxOSArMDEwMApDb21taXQ6ICAgICBKYW4gQmV1bGljaCA8amJldWxpY2hAc3Vz ZS5jb20+CkNvbW1pdERhdGU6IE1vbiBGZWIgNCAxMTozMjo0MiAyMDE5ICswMTAwCgogICAgeDg2 ZW11bC90ZXN0OiBmaXggYnVpbGQgYWZ0ZXIgIng4NmVtdWw6IGZpeCAzLW9wZXJhbmQgSU1VTCIK ICAgIAogICAgSW50cm9kdWNlIHRoZSBtaXNzaW5nICNkZWZpbmUgKGFuZCBhbm90aGVyIG9uZSBs aWtlbHkgdG8gYmUgbmVlZGVkIGJ5CiAgICBwb3NzaWJsZSBzdWJzZXF1ZW50IGJhY2twb3J0cyku 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cad1b554-2869-11e9-a0b0-efb1b1e42401; Mon, 04 Feb 2019 10:44:05 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqbjQ-0000o4-VA for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 10:44:04 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqbjQ-0005IL-SF for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 10:44:04 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 10:44:04 +0000 Subject: [Xen-changelog] [xen staging-4.9] x86emul/test: fix build after "x86emul: fix 3-operand IMUL" X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDU0YWEzODJjYmNkYzFlMmJhNzVkNjczNDE1MWNhNmU1MzEwNGUyZjIKQXV0aG9yOiAg ICAgSmFuIEJldWxpY2ggPGpiZXVsaWNoQHN1c2UuY29tPgpBdXRob3JEYXRlOiBNb24gRmViIDQg MTE6MzM6NDggMjAxOSArMDEwMApDb21taXQ6ICAgICBKYW4gQmV1bGljaCA8amJldWxpY2hAc3Vz ZS5jb20+CkNvbW1pdERhdGU6IE1vbiBGZWIgNCAxMTozMzo0OCAyMDE5ICswMTAwCgogICAgeDg2 ZW11bC90ZXN0OiBmaXggYnVpbGQgYWZ0ZXIgIng4NmVtdWw6IGZpeCAzLW9wZXJhbmQgSU1VTCIK ICAgIAogICAgSW50cm9kdWNlIHRoZSBtaXNzaW5nICNkZWZpbmUgKGFuZCBhbm90aGVyIG9uZSBs aWtlbHkgdG8gYmUgbmVlZGVkIGJ5CiAgICBwb3NzaWJsZSBzdWJzZXF1ZW50IGJhY2twb3J0cyku CiAgICAKICAgIFNpZ25lZC1vZmYtYnk6IEphbiBCZXVsaWNoIDxqYmV1bGljaEBzdXNlLmNvbT4K LS0tCiB0b29scy90ZXN0cy94ODZfZW11bGF0b3IvdGVzdF94ODZfZW11bGF0b3IuYyB8IDMgKysr CiAxIGZpbGUgY2hhbmdlZCwgMyBpbnNlcnRpb25zKCspCgpkaWZmIC0tZ2l0IGEvdG9vbHMvdGVz dHMveDg2X2VtdWxhdG9yL3Rlc3RfeDg2X2VtdWxhdG9yLmMgYi90b29scy90ZXN0cy94ODZfZW11 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2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 04 Feb 2019 11:44:13 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqcfc-0006cG-Np; Mon, 04 Feb 2019 11:44:12 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqcfa-0006cA-QT for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 11:44:10 +0000 X-Inumbo-ID: 2c7d8b68-2872-11e9-8f8c-9336501673ee Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 2c7d8b68-2872-11e9-8f8c-9336501673ee; Mon, 04 Feb 2019 11:44:05 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqcfU-0001zo-Pz for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 11:44:04 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqcfU-0002fz-Mr for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 11:44:04 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 11:44:04 +0000 Subject: [Xen-changelog] [xen staging] tools/misc: Remove obsolete xen-bugtool X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDg0NDI5M2M3MzY4NWY4MTk4YmMyZjBjN2M1YTEwMWIzZmNmZDUzOGMKQXV0aG9yOiAg ICAgSGFucyB2YW4gS3JhbmVuYnVyZyA8aGFucy52YW4ua3JhbmVuYnVyZ0BtZW5kaXguY29tPgpB dXRob3JEYXRlOiBTdW4gRmViIDMgMjE6MzU6MTggMjAxOSArMDEwMApDb21taXQ6ICAgICBXZWkg 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xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:22:04 +0000 X-Inumbo-ID: 884dd973-28ba-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 884dd973-28ba-11e9-bc90-bc764e045a96; Mon, 04 Feb 2019 20:22:03 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqkkk-0004Lq-Jn for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:22:02 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqkkk-0006uV-Gw for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:22:02 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 20:22:02 +0000 Subject: [Xen-changelog] [xen stable-4.11] VMX: fix vmx_handle_eoi() X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGMyMWFiYThiOWQ1Y2U1YmY1NWNlYzU1NTlkZjc2M2E5YjY4MmMwMzIKQXV0aG9yOiAg ICAgSmFuIEJldWxpY2ggPGpiZXVsaWNoQHN1c2UuY29tPgpBdXRob3JEYXRlOiBGcmkgRmViIDEg MTE6MjU6NTIgMjAxOSArMDEwMApDb21taXQ6ICAgICBKYW4gQmV1bGljaCA8amJldWxpY2hAc3Vz ZS5jb20+CkNvbW1pdERhdGU6IEZyaSBGZWIgMSAxMToyNTo1MiAyMDE5ICswMTAwCgogICAgVk1Y OiBmaXggdm14X2hhbmRsZV9lb2koKQogICAgCiAgICBJbiBjb21taXQgMzAzMDY2ZmRiMWUgKCJW TVg6IGZpeCBpbnRlcmFjdGlvbiBvZiBBUElDLVYgYW5kIFZpcmlkaWFuCiAgICBlbXVsYXRpb24i KSBJIHNjcmV3ZWQgdXA6IEluc3RlYWQgb2YgY2xlYXJpbmcgU1ZJLCBvdGhlciBJU1IgYml0cwog ICAgc2hvdWxkIGJlIHRha2VuIGludG8gYWNjb3VudC4KICAgIAogICAgSW50cm9kdWNlIGEgbmV3 IGhlbHBlciBzZXRfc3ZpKCksIHNwbGl0IG91dCBvZiB2bXhfcHJvY2Vzc19pc3IoKSwgYW5kCiAg 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ESMTPS id 8e66e7d9-28ba-11e9-bc90-bc764e045a96; Mon, 04 Feb 2019 20:22:13 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqkku-0004Ly-Qj for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:22:12 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqkku-0006vR-Nw for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:22:12 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 20:22:12 +0000 Subject: [Xen-changelog] [xen stable-4.11] update Xen version to 4.11.2-pre X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 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(envelope-from ) id 1gqkl6-00072o-8p for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:22:24 +0000 X-Inumbo-ID: 9478bd6f-28ba-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 9478bd6f-28ba-11e9-bc90-bc764e045a96; Mon, 04 Feb 2019 20:22:23 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqkl5-0004MA-17 for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:22:23 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqkl4-0006wL-Ut for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:22:22 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 20:22:22 +0000 Subject: [Xen-changelog] [xen stable-4.11] x86/HVM: __hvm_copy() should not write to p2m_ioreq_server pages X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGQ4YjI0MTg1NzNmYjBjM2YyYTE5MjYyMDI1NGQwODgyNjgwN2Q1OGEKQXV0aG9yOiAg ICAgSmFuIEJldWxpY2ggPGpiZXVsaWNoQHN1c2UuY29tPgpBdXRob3JEYXRlOiBGcmkgRmViIDEg MTE6Mjc6NTkgMjAxOSArMDEwMApDb21taXQ6ICAgICBKYW4gQmV1bGljaCA8amJldWxpY2hAc3Vz ZS5jb20+CkNvbW1pdERhdGU6IEZyaSBGZWIgMSAxMToyNzo1OSAyMDE5ICswMTAwCgogICAgeDg2 L0hWTTogX19odm1fY29weSgpIHNob3VsZCBub3Qgd3JpdGUgdG8gcDJtX2lvcmVxX3NlcnZlciBw YWdlcwogICAgCiAgICBDb21taXQgM2JkZWM1MzBhNSAoIng4Ni9IVk06IHNwbGl0IHBhZ2Ugc3Ry YWRkbGluZyBlbXVsYXRlZCBhY2Nlc3NlcyBpbgogICAgbW9yZSBjYXNlcyIpIGludHJvZHVjZWQg 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for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:22:33 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqklF-0006x8-4z for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:22:33 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 20:22:33 +0000 Subject: [Xen-changelog] [xen stable-4.11] x86/mem-sharing: Don't leave the altp2m lock held when nominating a page X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDdkMWJkOTg1ZWJkNGMxNDczYzRkZmQ1MGI2ZDNhMzNjOGUxYjFhOTMKQXV0aG9yOiAg 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a6bc36db-28ba-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id a6bc36db-28ba-11e9-bc90-bc764e045a96; Mon, 04 Feb 2019 20:22:53 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqklZ-0004NK-Ly for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:22:53 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqklZ-0006yi-Ij for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:22:53 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 20:22:53 +0000 Subject: [Xen-changelog] [xen stable-4.11] ns16550/PCI: fix skipping of devices X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: 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(envelope-from ) id 1gqklj-0006zp-Py for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:23:03 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 20:23:03 +0000 Subject: [Xen-changelog] [xen stable-4.11] x86/shadow: don't enable shadow mode with too small a shadow allocation X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGFmMjVmNTJhMDZhODI3ODlhY2Y5MWZkOThmNzFjODU2MzkxOWFiMGIKQXV0aG9yOiAg ICAgSmFuIEJldWxpY2ggPGpiZXVsaWNoQHN1c2UuY29tPgpBdXRob3JEYXRlOiBGcmkgRmViIDEg MTE6MzA6NTUgMjAxOSArMDEwMApDb21taXQ6ICAgICBKYW4gQmV1bGljaCA8amJldWxpY2hAc3Vz 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xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqklu-0004O5-2s for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:23:14 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqklu-00070Y-0A for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:23:14 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 20:23:14 +0000 Subject: [Xen-changelog] [xen stable-4.11] x86/VT-x: Don't activate VMCS Shadowing outside of nested vmx mode X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: 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20:23:24 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqkm4-0004OD-9e for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:23:24 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqkm4-00071N-7A for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:23:24 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 20:23:24 +0000 Subject: [Xen-changelog] [xen stable-4.11] x86/hvm: Corrections to RDTSCP intercept handling X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============8950551896049417529==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============8950551896049417529== Content-Type: text/plain commit dd914e4c6fc91f576846855ab14d473f576835bd Author: Andrew Cooper AuthorDate: Fri Feb 1 11:32:03 2019 +0100 Commit: Jan Beulich CommitDate: Fri Feb 1 11:32:03 2019 +0100 x86/hvm: Corrections to RDTSCP intercept handling For both VT-x and SVM, the RDTSCP intercept will trigger if the pipeline supports the instruction, but the guest may not have RDTSCP in its featureset. Bring the vmexit handlers in line with the main emulator behaviour by optionally handing back #UD. Next on the AMD side, if RDTSCP actually ends up being intercepted on a debug build or first-gen SVM hardware which lacks NRIP, we first update regs->rcx, then call __get_instruction_length() asking for RDTSC. As the two instructions are different (and indeed, different lengths!), __get_instruction_length_from_list() fails and hands back a #GP fault. This can demonstrated by putting a guest into tsc_mode="always emulate" and executing an RDTSCP instruction: (d1) --- Xen Test Framework --- (d1) Environment: HVM 64bit (Long mode 4 levels) (d1) Test rdtscp (d1) TSC mode 1 (XEN) emulate.c:147:d1v0 __get_instruction_length: Mismatch between expected and actual instruction: (XEN) emulate.c:152:d1v0 insn_index 8, opcode 0xf0031 modrm 0 (XEN) emulate.c:154:d1v0 rip 0x10475f, nextrip 0x104762, len 3 (XEN) SVM insn len emulation failed (1): d1v0 64bit @ 0008:0010475f -> 0f 01 f9 0f 31 5b 31 ff 31 c0 e9 c2 db ff ff 00 (d1) ****************************** (d1) PANIC: Unhandled exception at 0008:000000000010475f (d1) Vec 13 #GP[0000] (d1) ****************************** First, teach __get_instruction_length() to cope with RDTSCP, and improve svm_vmexit_do_rdtsc() to ask for the correct instruction. Move the regs->rcx adjustment into this function to ensure it gets done after we are done potentially raising faults. Reported-by: Paul Durrant Signed-off-by: Andrew Cooper Reviewed-by: Brian Woods Reviewed-by: Jan Beulich Reviewed-by: Kevin Tian Reviewed-by: Roger Pau Monné master commit: 3fd3fda9c26fc3c4f77250f795ed7ff9d38e2ec6 master date: 2018-12-17 16:28:03 +0000 --- xen/arch/x86/hvm/svm/emulate.c | 1 + xen/arch/x86/hvm/svm/svm.c | 22 +++++++++++++++++----- xen/arch/x86/hvm/vmx/vmx.c | 8 ++++++++ xen/include/asm-x86/hvm/svm/emulate.h | 1 + 4 files changed, 27 insertions(+), 5 deletions(-) diff --git a/xen/arch/x86/hvm/svm/emulate.c b/xen/arch/x86/hvm/svm/emulate.c index 535674e9dc..0897944760 100644 --- a/xen/arch/x86/hvm/svm/emulate.c +++ b/xen/arch/x86/hvm/svm/emulate.c @@ -75,6 +75,7 @@ static const struct { [INSTR_STGI] = { X86EMUL_OPC(0x0f, 0x01), MODRM(3, 3, 4) }, [INSTR_CLGI] = { X86EMUL_OPC(0x0f, 0x01), MODRM(3, 3, 5) }, [INSTR_INVLPGA] = { X86EMUL_OPC(0x0f, 0x01), MODRM(3, 3, 7) }, + [INSTR_RDTSCP] = { X86EMUL_OPC(0x0f, 0x01), MODRM(3, 7, 1) }, [INSTR_INVD] = { X86EMUL_OPC(0x0f, 0x08) }, [INSTR_WBINVD] = { X86EMUL_OPC(0x0f, 0x09) }, [INSTR_WRMSR] = { X86EMUL_OPC(0x0f, 0x30) }, diff --git a/xen/arch/x86/hvm/svm/svm.c b/xen/arch/x86/hvm/svm/svm.c index b964c59dad..c61693dcb5 100644 --- a/xen/arch/x86/hvm/svm/svm.c +++ b/xen/arch/x86/hvm/svm/svm.c @@ -2321,14 +2321,28 @@ static void svm_vmexit_do_hlt(struct vmcb_struct *vmcb, hvm_hlt(regs->eflags); } -static void svm_vmexit_do_rdtsc(struct cpu_user_regs *regs) +static void svm_vmexit_do_rdtsc(struct cpu_user_regs *regs, bool rdtscp) { + struct vcpu *curr = current; + const struct domain *currd = curr->domain; + enum instruction_index insn = rdtscp ? INSTR_RDTSCP : INSTR_RDTSC; unsigned int inst_len; - if ( (inst_len = __get_instruction_length(current, INSTR_RDTSC)) == 0 ) + if ( rdtscp && !currd->arch.cpuid->extd.rdtscp && + currd->arch.tsc_mode != TSC_MODE_PVRDTSCP ) + { + hvm_inject_hw_exception(TRAP_invalid_op, X86_EVENT_NO_EC); return; + } + + if ( (inst_len = __get_instruction_length(curr, insn)) == 0 ) + return; + __update_guest_eip(regs, inst_len); + if ( rdtscp ) + regs->rcx = hvm_msr_tsc_aux(curr); + hvm_rdtsc_intercept(regs); } @@ -3014,10 +3028,8 @@ void svm_vmexit_handler(struct cpu_user_regs *regs) break; case VMEXIT_RDTSCP: - regs->rcx = hvm_msr_tsc_aux(v); - /* fall through */ case VMEXIT_RDTSC: - svm_vmexit_do_rdtsc(regs); + svm_vmexit_do_rdtsc(regs, exit_reason == VMEXIT_RDTSCP); break; case VMEXIT_MONITOR: diff --git a/xen/arch/x86/hvm/vmx/vmx.c b/xen/arch/x86/hvm/vmx/vmx.c index 4a66eae9d0..f9e5d74d19 100644 --- a/xen/arch/x86/hvm/vmx/vmx.c +++ b/xen/arch/x86/hvm/vmx/vmx.c @@ -3566,6 +3566,7 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs) unsigned long exit_qualification, exit_reason, idtv_info, intr_info = 0; unsigned int vector = 0, mode; struct vcpu *v = current; + struct domain *currd = v->domain; __vmread(GUEST_RIP, ®s->rip); __vmread(GUEST_RSP, ®s->rsp); @@ -3933,6 +3934,13 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs) vmx_invlpg_intercept(exit_qualification); break; case EXIT_REASON_RDTSCP: + if ( !currd->arch.cpuid->extd.rdtscp && + currd->arch.tsc_mode != TSC_MODE_PVRDTSCP ) + { + hvm_inject_hw_exception(TRAP_invalid_op, X86_EVENT_NO_EC); + break; + } + regs->rcx = hvm_msr_tsc_aux(v); /* fall through */ case EXIT_REASON_RDTSC: diff --git a/xen/include/asm-x86/hvm/svm/emulate.h b/xen/include/asm-x86/hvm/svm/emulate.h index 3de8236301..ca92abbe28 100644 --- a/xen/include/asm-x86/hvm/svm/emulate.h +++ b/xen/include/asm-x86/hvm/svm/emulate.h @@ -30,6 +30,7 @@ enum instruction_index { INSTR_HLT, INSTR_INT3, INSTR_RDTSC, + INSTR_RDTSCP, INSTR_PAUSE, 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xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:23:35 +0000 X-Inumbo-ID: bf1828cb-28ba-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id bf1828cb-28ba-11e9-bc90-bc764e045a96; Mon, 04 Feb 2019 20:23:34 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqkmE-0004OL-Gx for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:23:34 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqkmE-00072L-ED for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:23:34 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 20:23:34 +0000 Subject: [Xen-changelog] [xen stable-4.11] x86emul: fix 3-operand IMUL X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for 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us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id c52c70e0-28ba-11e9-bc90-bc764e045a96; Mon, 04 Feb 2019 20:23:45 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqkmO-0004Ov-Nt for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:23:44 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqkmO-000733-LO for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:23:44 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 20:23:44 +0000 Subject: [Xen-changelog] [xen stable-4.11] x86emul: work around SandyBridge errata X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; 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(unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id cb40b248-28ba-11e9-bc90-bc764e045a96; Mon, 04 Feb 2019 20:23:55 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqkmY-0004P3-UR for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:23:54 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqkmY-00073V-Rt for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:23:54 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 20:23:54 +0000 Subject: [Xen-changelog] [xen stable-4.11] mm/page_alloc: fix MEMF_no_dma allocations for single NUMA X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: 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X-Inumbo-ID: d15a0962-28ba-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id d15a0962-28ba-11e9-bc90-bc764e045a96; Mon, 04 Feb 2019 20:24:05 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqkmj-0004PS-5B for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:24:05 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqkmj-00074G-2f for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:24:05 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 20:24:05 +0000 Subject: [Xen-changelog] [xen stable-4.11] xen/cmdline: Fix buggy strncmp(s, LITERAL, ss - s) construct X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" 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Oi8vbGlzdHMueGVucHJvamVjdC5vcmcveGVuLWNoYW5nZWxvZw== From xen-changelog-bounces@lists.xenproject.org Mon Feb 04 20:24:18 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 04 Feb 2019 20:24:18 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqkmw-0007Iw-Tx; Mon, 04 Feb 2019 20:24:18 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqkmv-0007In-Bw for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:24:17 +0000 X-Inumbo-ID: d76ed372-28ba-11e9-be92-2309311b29a9 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id d76ed372-28ba-11e9-be92-2309311b29a9; Mon, 04 Feb 2019 20:24:15 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqkmt-0004Pa-BO for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:24:15 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqkmt-00074g-8s for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:24:15 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 20:24:15 +0000 Subject: [Xen-changelog] [xen stable-4.11] x86/AMD: flush TLB after ucode update X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDUxNGRjY2QwNDlmODMzODQ5NWI2Yzk5MmI5YzZhMWVjMmVjZTI5MzIKQXV0aG9yOiAg 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archives@lists.xen.org Delivery-date: Mon, 04 Feb 2019 20:24:30 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqkn8-0007K5-05; Mon, 04 Feb 2019 20:24:29 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqkn6-0007Ju-PY for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:24:28 +0000 X-Inumbo-ID: dd833b40-28ba-11e9-937f-77b5f8030fb8 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id dd833b40-28ba-11e9-937f-77b5f8030fb8; Mon, 04 Feb 2019 20:24:25 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqkn3-0004Pj-I0 for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:24:25 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqkn3-00075B-FR for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:24:25 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 20:24:25 +0000 Subject: [Xen-changelog] [xen stable-4.11] x86/hvm: Fix bit checking for CR4 and MSR_EFER X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDg1MGNhOTQwMDRlMzc1YjRmOWUwNGEwYTE0OGViYWQ3Njg1ZWZmY2MKQXV0aG9yOiAg ICAgQW5kcmV3IENvb3BlciA8YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT4KQXV0aG9yRGF0ZTog RnJpIEZlYiAxIDExOjM2OjE3IDIwMTkgKzAxMDAKQ29tbWl0OiAgICAgSmFuIEJldWxpY2ggPGpi 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2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 04 Feb 2019 20:24:38 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqknG-0007Kv-21; Mon, 04 Feb 2019 20:24:38 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqknE-0007Kk-RW for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:24:36 +0000 X-Inumbo-ID: e394ee9f-28ba-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id e394ee9f-28ba-11e9-bc90-bc764e045a96; Mon, 04 Feb 2019 20:24:36 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqknD-0004QW-OH for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:24:35 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqknD-00075m-Lj for xen-changelog@lists.xenproject.org; Mon, 04 Feb 2019 20:24:35 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 04 Feb 2019 20:24:35 +0000 Subject: [Xen-changelog] [xen stable-4.11] correct release note link in SUPPORT.md X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGUyZTNhMWQ3NTc5ODc4MWE4MDMxZmVlYzAwNTBlNmUxYzk4MTg3Y2EKQXV0aG9yOiAg ICAgSnVlcmdlbiBHcm9zcyA8amdyb3NzQHN1c2UuY29tPgpBdXRob3JEYXRlOiBGcmkgRmViIDEg MTI6MzQ6MzEgMjAxOSArMDEwMApDb21taXQ6ICAgICBKYW4gQmV1bGljaCA8amJldWxpY2hAc3Vz 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xen-changelog-bounces@lists.xenproject.org Tue Feb 05 11:44:19 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Tue, 05 Feb 2019 11:44:19 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqz9H-0006lK-Qq; Tue, 05 Feb 2019 11:44:19 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqz9G-0006kq-Dv for xen-changelog@lists.xenproject.org; Tue, 05 Feb 2019 11:44:18 +0000 X-Inumbo-ID: 5d443246-293b-11e9-a4bd-8325443d5fab Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 5d443246-293b-11e9-a4bd-8325443d5fab; Tue, 05 Feb 2019 11:44:15 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqz9D-00087h-FZ for xen-changelog@lists.xenproject.org; Tue, 05 Feb 2019 11:44:15 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqz9D-00007h-Co for xen-changelog@lists.xenproject.org; Tue, 05 Feb 2019 11:44:15 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Tue, 05 Feb 2019 11:44:15 +0000 Subject: [Xen-changelog] [xen staging-4.10] libxl: don't set gnttab limits in soft reset case X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDBhOWNjMzc5OTY4YjdmZDUwYjk1NWM5ZGRkM2Q3ZGExZGU5MDhiODQKQXV0aG9yOiAg 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Tue, 05 Feb 2019 12:11:10 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqzZF-0001TP-Uj for xen-changelog@lists.xenproject.org; Tue, 05 Feb 2019 12:11:09 +0000 X-Inumbo-ID: 1cb56bd8-293f-11e9-807e-7bbdae56d4db Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 1cb56bd8-293f-11e9-807e-7bbdae56d4db; Tue, 05 Feb 2019 12:11:05 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqzZB-0000GG-3y for xen-changelog@lists.xenproject.org; Tue, 05 Feb 2019 12:11:05 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqzZB-00026K-18 for xen-changelog@lists.xenproject.org; Tue, 05 Feb 2019 12:11:05 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Tue, 05 Feb 2019 12:11:05 +0000 Subject: [Xen-changelog] [xen staging-4.11] libxl: correctly dispose of dominfo list in libxl_name_to_domid X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDg3ZjUxYmYzNjZjYTc5Yjk4ZTFlMjAxYmY5YmQ3YTljMTY0NjMxZTIKQXV0aG9yOiAg ICAgV2VpIExpdSA8d2VpLmxpdTJAY2l0cml4LmNvbT4KQXV0aG9yRGF0ZTogVHVlIEphbiAyOSAx MTozNzo1OSAyMDE5ICswMDAwCkNvbW1pdDogICAgIElhbiBKYWNrc29uIDxpYW4uamFja3NvbkBl dS5jaXRyaXguY29tPgpDb21taXREYXRlOiBUdWUgRmViIDUgMTE6NTc6MzIgMjAxOSArMDAwMAoK ICAgIGxpYnhsOiBjb3JyZWN0bHkgZGlzcG9zZSBvZiBkb21pbmZvIGxpc3QgaW4gbGlieGxfbmFt 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helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqzZQ-0001UU-Im for xen-changelog@lists.xenproject.org; Tue, 05 Feb 2019 12:11:20 +0000 X-Inumbo-ID: 230c6d10-293f-11e9-be28-2bb6145158ae Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 230c6d10-293f-11e9-be28-2bb6145158ae; Tue, 05 Feb 2019 12:11:16 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gqzZL-0000GL-PT for xen-changelog@lists.xenproject.org; Tue, 05 Feb 2019 12:11:15 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gqzZL-000275-MZ for xen-changelog@lists.xenproject.org; Tue, 05 Feb 2019 12:11:15 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Tue, 05 Feb 2019 12:11:15 +0000 Subject: [Xen-changelog] [xen staging-4.10] libxl: correctly dispose of dominfo list in libxl_name_to_domid X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGUyMWM3OWZlNGZkMjA0ZWNhMGM2YjlmNzkxMDJlMzgyNmRiNzMzNGEKQXV0aG9yOiAg ICAgV2VpIExpdSA8d2VpLmxpdTJAY2l0cml4LmNvbT4KQXV0aG9yRGF0ZTogVHVlIEphbiAyOSAx MTozNzo1OSAyMDE5ICswMDAwCkNvbW1pdDogICAgIElhbiBKYWNrc29uIDxpYW4uamFja3NvbkBl dS5jaXRyaXguY29tPgpDb21taXREYXRlOiBUdWUgRmViIDUgMTE6NTc6NDMgMjAxOSArMDAwMAoK ICAgIGxpYnhsOiBjb3JyZWN0bHkgZGlzcG9zZSBvZiBkb21pbmZvIGxpc3QgaW4gbGlieGxfbmFt ZV90b19kb21pZAogICAgCiAgICBUYW1hcyByZXBvcnRlZCBzc2lkX2xhYmVsIHdhcyBsZWFrZWQu IFVzZSB0aGUgZGVzaWduYXRlZCBmdW5jdGlvbiB0bwogICAgZnJlZSBkb21pbmZvIGxpc3QgdG8g 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(envelope-from ) id 1gr6IK-0007IR-6x for xen-changelog@lists.xenproject.org; Tue, 05 Feb 2019 19:22:08 +0000 X-Inumbo-ID: 527500b2-297b-11e9-b672-ffd1089ab644 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 527500b2-297b-11e9-b672-ffd1089ab644; Tue, 05 Feb 2019 19:22:05 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gr6IH-0000iD-4p for xen-changelog@lists.xenproject.org; Tue, 05 Feb 2019 19:22:05 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gr6IH-0006L7-1z for xen-changelog@lists.xenproject.org; Tue, 05 Feb 2019 19:22:05 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Tue, 05 Feb 2019 19:22:05 +0000 Subject: [Xen-changelog] [xen staging] xen/arm: irq: End cleanly spurious interrupt X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDhhYTI3NjIzNWI5M2VlYjRmODEwOTVjNjM4OTcwOTAwZTE5YjMxZTUKQXV0aG9yOiAg ICAgSnVsaWVuIEdyYWxsIDxqdWxpZW4uZ3JhbGxAYXJtLmNvbT4KQXV0aG9yRGF0ZTogTW9uIEph biAyOCAxNjowMDoyMyAyMDE5ICswMDAwCkNvbW1pdDogICAgIFN0ZWZhbm8gU3RhYmVsbGluaSA8 c3N0YWJlbGxpbmlAa2VybmVsLm9yZz4KQ29tbWl0RGF0ZTogVHVlIEZlYiA1IDExOjE5OjI2IDIw MTkgLTA4MDAKCiAgICB4ZW4vYXJtOiBpcnE6IEVuZCBjbGVhbmx5IHNwdXJpb3VzIGludGVycnVw dAogICAgCiAgICBub19pcnFfdHlwZSBoYW5kbGVycyBhcmUgdXNlZCB3aGVuIGFuIElSUSBkb2Vz IG5vdCBoYXZlIGFjdGlvbiBhdHRhY2hlZC4KICAgIFRoaXMgaXMgdXNlZnVsIHRvIGRldGVjdCBt aXNjb25maWd1cmF0aW9uIGJldHdlZW4gdGhlIGludGVycnVwdAogICAgY29udHJvbGxlciBhbmQg 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[104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 39d56efb-29a5-11e9-bc90-bc764e045a96; Wed, 06 Feb 2019 00:22:03 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grAyY-00073R-K5 for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:22:02 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grAyY-0003kk-HL for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:22:02 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 00:22:02 +0000 Subject: [Xen-changelog] [xen stable-4.9] xen/arm: gic: Ensure we have an ISB between ack and do_IRQ() X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org 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xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:22:15 +0000 X-Inumbo-ID: 3fde25da-29a5-11e9-a8a4-5f8e0c558819 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 3fde25da-29a5-11e9-a8a4-5f8e0c558819; Wed, 06 Feb 2019 00:22:13 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grAyi-00073Z-QZ for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:22:12 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grAyi-0003lI-No for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:22:12 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 00:22:12 +0000 Subject: [Xen-changelog] [xen stable-4.9] xen/arm: gic: Ensure ordering between read of INTACK and shared data X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 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us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 45f307b1-29a5-11e9-bc90-bc764e045a96; Wed, 06 Feb 2019 00:22:23 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grAyt-00073h-0q for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:22:23 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grAys-0003lx-UW for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:22:22 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 00:22:22 +0000 Subject: [Xen-changelog] [xen stable-4.9] xen/arm: check for multiboot nodes only under /chosen X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: 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06 Feb 2019 00:22:34 +0000 X-Inumbo-ID: 4c0df9c5-29a5-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 4c0df9c5-29a5-11e9-bc90-bc764e045a96; Wed, 06 Feb 2019 00:22:33 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grAz3-00074H-7K for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:22:33 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grAz3-0003mU-4a for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:22:33 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 00:22:33 +0000 Subject: [Xen-changelog] [xen stable-4.9] xen/arm: vgic-v3: Delay the initialization of the domain information X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDE5ZmM0NGY0YTE4MDE1OGYyNzc4OGU2MGY2ZGE3OGVhMjlmNjhhMzMKQXV0aG9yOiAg ICAgSnVsaWVuIEdyYWxsIDxqdWxpZW4uZ3JhbGxAYXJtLmNvbT4KQXV0aG9yRGF0ZTogTW9uIE9j dCAxIDE3OjQyOjI2IDIwMTggKzAxMDAKQ29tbWl0OiAgICAgU3RlZmFubyBTdGFiZWxsaW5pIDxz c3RhYmVsbGluaUBrZXJuZWwub3JnPgpDb21taXREYXRlOiBGcmkgSmFuIDI1IDE3OjMwOjE5IDIw MTkgLTA4MDAKCiAgICB4ZW4vYXJtOiB2Z2ljLXYzOiBEZWxheSB0aGUgaW5pdGlhbGl6YXRpb24g b2YgdGhlIGRvbWFpbiBpbmZvcm1hdGlvbgogICAgCiAgICBBIGZvbGxvdy11cCBwYXRjaCB3aWxs IHJlcXVpcmUgdG8ga25vdyB0aGUgbnVtYmVyIG9mIHZDUFVzIHdoZW4KICAgIGluaXRpYWxpemF0 aW5nIHRoZSB2R0lDdjMgZG9tYWluIHN0cnVjdHVyZS4gSG93ZXZlciB0aGlzIGluZm9ybWF0aW9u IGlzCiAgICBub3QgYXZhaWxhYmxlIGF0IGRvbWFpbiBjcmVhdGlvbi4gVGhpcyBpcyBvbmx5IGtu 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helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grAzI-0007oY-VE; Wed, 06 Feb 2019 00:22:48 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grAzH-0007oQ-IR for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:22:47 +0000 X-Inumbo-ID: 521c9d3a-29a5-11e9-9203-5b13ae4ed9ba Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 521c9d3a-29a5-11e9-9203-5b13ae4ed9ba; Wed, 06 Feb 2019 00:22:43 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grAzD-00074U-E4 for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:22:43 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grAzD-0003n5-BC for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:22:43 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 00:22:43 +0000 Subject: [Xen-changelog] [xen stable-4.9] xen/arm: vgic-v3: Don't create empty re-distributor regions X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDA0MzdiYTBlNTc4ZDA4OWViMjRmYzQ5MzU3NWNkMGU4ZjI1ODRlYzcKQXV0aG9yOiAg ICAgSnVsaWVuIEdyYWxsIDxqdWxpZW4uZ3JhbGxAYXJtLmNvbT4KQXV0aG9yRGF0ZTogTW9uIEph biAyOCAxNDo1NDo1MiAyMDE5IC0wODAwCkNvbW1pdDogICAgIFN0ZWZhbm8gU3RhYmVsbGluaSA8 c3N0YWJlbGxpbmlAa2VybmVsLm9yZz4KQ29tbWl0RGF0ZTogVHVlIEphbiAyOSAwOToxNDo0MyAy 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5834e117-29a5-11e9-bc90-bc764e045a96; Wed, 06 Feb 2019 00:22:53 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grAzN-00074c-Kx for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:22:53 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grAzN-0003nb-I9 for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:22:53 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 00:22:53 +0000 Subject: [Xen-changelog] [xen stable-4.9] VMX: fix vmx_handle_eoi() X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: 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dC5vcmcveGVuLWNoYW5nZWxvZw== From xen-changelog-bounces@lists.xenproject.org Wed Feb 06 00:23:06 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Wed, 06 Feb 2019 00:23:06 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grAza-0007qe-2C; Wed, 06 Feb 2019 00:23:06 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grAzY-0007qS-ON for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:23:04 +0000 X-Inumbo-ID: 5e4b6c8a-29a5-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 5e4b6c8a-29a5-11e9-bc90-bc764e045a96; Wed, 06 Feb 2019 00:23:04 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grAzX-00074z-RW for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:23:03 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grAzX-0003oP-P3 for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:23:03 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 00:23:03 +0000 Subject: [Xen-changelog] [xen stable-4.9] x86/HVM: __hvm_copy() should not write to p2m_ioreq_server pages X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGVkNGYwZTgzOTM5OWU4NGY1YTczYTk3MjA4MTc5ZjE4MTBiYjM3ZTkKQXV0aG9yOiAg 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xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:23:15 +0000 X-Inumbo-ID: 645c285d-29a5-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 645c285d-29a5-11e9-bc90-bc764e045a96; Wed, 06 Feb 2019 00:23:14 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grAzi-000757-1j for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:23:14 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grAzh-0003p0-VJ for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:23:13 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 00:23:13 +0000 Subject: [Xen-changelog] [xen stable-4.9] x86/mem-sharing: Don't leave the altp2m lock held when nominating a page X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 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From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 00:23:24 +0000 Subject: [Xen-changelog] [xen stable-4.9] x86/soft-reset: Drop gfn reference after calling get_gfn_query() X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDE5NDE0MmZmZjM5NGIxM2NjZDYwMTBmMzM1M2QzNDBkNGUzNTZiNzgKQXV0aG9yOiAg ICAgQW5kcmV3IENvb3BlciA8YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT4KQXV0aG9yRGF0ZTog RnJpIEZlYiAxIDEyOjAyOjE1IDIwMTkgKzAxMDAKQ29tbWl0OiAgICAgSmFuIEJldWxpY2ggPGpi ZXVsaWNoQHN1c2UuY29tPgpDb21taXREYXRlOiBGcmkgRmViIDEgMTI6MDI6MTUgMjAxOSArMDEw 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for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:23:34 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 00:23:34 +0000 Subject: [Xen-changelog] [xen stable-4.9] ns16550/PCI: fix skipping of devices X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDg0MGI1MjMzZjU0YmQwYTAwZjcxMmRlMzEwNTU4ZTgzMjRjZWM1YTYKQXV0aG9yOiAg ICAgSmFuIEJldWxpY2ggPGpiZXVsaWNoQHN1c2UuY29tPgpBdXRob3JEYXRlOiBGcmkgRmViIDEg MTI6MDI6NDUgMjAxOSArMDEwMApDb21taXQ6ICAgICBKYW4gQmV1bGljaCA8amJldWxpY2hAc3Vz ZS5jb20+CkNvbW1pdERhdGU6IEZyaSBGZWIgMSAxMjowMjo0NSAyMDE5ICswMTAwCgogICAgbnMx 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[104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 769c00eb-29a5-11e9-bc90-bc764e045a96; Wed, 06 Feb 2019 00:23:45 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grB0C-00076C-Kd for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:23:44 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grB0C-0003qu-I5 for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:23:44 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 00:23:44 +0000 Subject: [Xen-changelog] [xen stable-4.9] x86/shadow: don't enable shadow mode with too small a shadow allocation X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: 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([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grB0N-0007wu-VO for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:23:56 +0000 X-Inumbo-ID: 7caba5d2-29a5-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 7caba5d2-29a5-11e9-bc90-bc764e045a96; Wed, 06 Feb 2019 00:23:55 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grB0M-00076K-R6 for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:23:54 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grB0M-0003rT-Od for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:23:54 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 00:23:54 +0000 Subject: [Xen-changelog] [xen stable-4.9] x86/VT-x: Don't activate VMCS Shadowing 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([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grB0Y-0007y3-D9 for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:24:06 +0000 X-Inumbo-ID: 82c289b5-29a5-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 82c289b5-29a5-11e9-bc90-bc764e045a96; Wed, 06 Feb 2019 00:24:05 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grB0X-00076j-1y for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:24:05 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grB0W-0003sL-VW for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:24:04 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 00:24:04 +0000 Subject: [Xen-changelog] [xen stable-4.9] x86/hvm: Corrections to RDTSCP intercept handling X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============8488081953337222916==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============8488081953337222916== Content-Type: text/plain commit 3a3f48a59e4269c6111e2c30f31a49d76322bf65 Author: Andrew Cooper AuthorDate: Fri Feb 1 12:04:41 2019 +0100 Commit: Jan Beulich CommitDate: Fri Feb 1 12:04:41 2019 +0100 x86/hvm: Corrections to RDTSCP intercept handling For both VT-x and SVM, the RDTSCP intercept will trigger if the pipeline supports the instruction, but the guest may not have RDTSCP in its featureset. Bring the vmexit handlers in line with the main emulator behaviour by optionally handing back #UD. Next on the AMD side, if RDTSCP actually ends up being intercepted on a debug build or first-gen SVM hardware which lacks NRIP, we first update regs->rcx, then call __get_instruction_length() asking for RDTSC. As the two instructions are different (and indeed, different lengths!), __get_instruction_length_from_list() fails and hands back a #GP fault. This can demonstrated by putting a guest into tsc_mode="always emulate" and executing an RDTSCP instruction: (d1) --- Xen Test Framework --- (d1) Environment: HVM 64bit (Long mode 4 levels) (d1) Test rdtscp (d1) TSC mode 1 (XEN) emulate.c:147:d1v0 __get_instruction_length: Mismatch between expected and actual instruction: (XEN) emulate.c:152:d1v0 insn_index 8, opcode 0xf0031 modrm 0 (XEN) emulate.c:154:d1v0 rip 0x10475f, nextrip 0x104762, len 3 (XEN) SVM insn len emulation failed (1): d1v0 64bit @ 0008:0010475f -> 0f 01 f9 0f 31 5b 31 ff 31 c0 e9 c2 db ff ff 00 (d1) ****************************** (d1) PANIC: Unhandled exception at 0008:000000000010475f (d1) Vec 13 #GP[0000] (d1) ****************************** First, teach __get_instruction_length() to cope with RDTSCP, and improve svm_vmexit_do_rdtsc() to ask for the correct instruction. Move the regs->rcx adjustment into this function to ensure it gets done after we are done potentially raising faults. Reported-by: Paul Durrant Signed-off-by: Andrew Cooper Reviewed-by: Brian Woods Reviewed-by: Jan Beulich Reviewed-by: Kevin Tian Reviewed-by: Roger Pau Monné master commit: 3fd3fda9c26fc3c4f77250f795ed7ff9d38e2ec6 master date: 2018-12-17 16:28:03 +0000 --- xen/arch/x86/hvm/svm/emulate.c | 1 + xen/arch/x86/hvm/svm/svm.c | 22 +++++++++++++++++----- xen/arch/x86/hvm/vmx/vmx.c | 8 ++++++++ xen/include/asm-x86/hvm/svm/emulate.h | 1 + 4 files changed, 27 insertions(+), 5 deletions(-) diff --git a/xen/arch/x86/hvm/svm/emulate.c b/xen/arch/x86/hvm/svm/emulate.c index e1a158103c..2614af1363 100644 --- a/xen/arch/x86/hvm/svm/emulate.c +++ b/xen/arch/x86/hvm/svm/emulate.c @@ -74,6 +74,7 @@ static const struct { [INSTR_STGI] = { X86EMUL_OPC(0x0f, 0x01), MODRM(3, 3, 4) }, [INSTR_CLGI] = { X86EMUL_OPC(0x0f, 0x01), MODRM(3, 3, 5) }, [INSTR_INVLPGA] = { X86EMUL_OPC(0x0f, 0x01), MODRM(3, 3, 7) }, + [INSTR_RDTSCP] = { X86EMUL_OPC(0x0f, 0x01), MODRM(3, 7, 1) }, [INSTR_INVD] = { X86EMUL_OPC(0x0f, 0x08) }, [INSTR_WBINVD] = { X86EMUL_OPC(0x0f, 0x09) }, [INSTR_WRMSR] = { X86EMUL_OPC(0x0f, 0x30) }, diff --git a/xen/arch/x86/hvm/svm/svm.c b/xen/arch/x86/hvm/svm/svm.c index 155a1877b8..55b1498e9d 100644 --- a/xen/arch/x86/hvm/svm/svm.c +++ b/xen/arch/x86/hvm/svm/svm.c @@ -2226,14 +2226,28 @@ static void svm_vmexit_do_hlt(struct vmcb_struct *vmcb, hvm_hlt(regs->eflags); } -static void svm_vmexit_do_rdtsc(struct cpu_user_regs *regs) +static void svm_vmexit_do_rdtsc(struct cpu_user_regs *regs, bool rdtscp) { + struct vcpu *curr = current; + const struct domain *currd = curr->domain; + enum instruction_index insn = rdtscp ? INSTR_RDTSCP : INSTR_RDTSC; unsigned int inst_len; - if ( (inst_len = __get_instruction_length(current, INSTR_RDTSC)) == 0 ) + if ( rdtscp && !currd->arch.cpuid->extd.rdtscp && + currd->arch.tsc_mode != TSC_MODE_PVRDTSCP ) + { + hvm_inject_hw_exception(TRAP_invalid_op, X86_EVENT_NO_EC); return; + } + + if ( (inst_len = __get_instruction_length(curr, insn)) == 0 ) + return; + __update_guest_eip(regs, inst_len); + if ( rdtscp ) + regs->rcx = hvm_msr_tsc_aux(curr); + hvm_rdtsc_intercept(regs); } @@ -2854,10 +2868,8 @@ void svm_vmexit_handler(struct cpu_user_regs *regs) break; case VMEXIT_RDTSCP: - regs->rcx = hvm_msr_tsc_aux(v); - /* fall through */ case VMEXIT_RDTSC: - svm_vmexit_do_rdtsc(regs); + svm_vmexit_do_rdtsc(regs, exit_reason == VMEXIT_RDTSCP); break; case VMEXIT_MONITOR: diff --git a/xen/arch/x86/hvm/vmx/vmx.c b/xen/arch/x86/hvm/vmx/vmx.c index 9f97f388c9..5042a86515 100644 --- a/xen/arch/x86/hvm/vmx/vmx.c +++ b/xen/arch/x86/hvm/vmx/vmx.c @@ -3628,6 +3628,7 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs) unsigned long exit_qualification, exit_reason, idtv_info, intr_info = 0; unsigned int vector = 0, mode; struct vcpu *v = current; + struct domain *currd = v->domain; __vmread(GUEST_RIP, ®s->rip); __vmread(GUEST_RSP, ®s->rsp); @@ -3991,6 +3992,13 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs) vmx_invlpg_intercept(exit_qualification); break; case EXIT_REASON_RDTSCP: + if ( !currd->arch.cpuid->extd.rdtscp && + currd->arch.tsc_mode != TSC_MODE_PVRDTSCP ) + { + hvm_inject_hw_exception(TRAP_invalid_op, X86_EVENT_NO_EC); + break; + } + regs->rcx = hvm_msr_tsc_aux(v); /* fall through */ case EXIT_REASON_RDTSC: diff --git a/xen/include/asm-x86/hvm/svm/emulate.h b/xen/include/asm-x86/hvm/svm/emulate.h index 7c1dcd186a..ccb654f1dd 100644 --- a/xen/include/asm-x86/hvm/svm/emulate.h +++ b/xen/include/asm-x86/hvm/svm/emulate.h @@ -30,6 +30,7 @@ enum instruction_index { INSTR_HLT, INSTR_INT3, INSTR_RDTSC, + INSTR_RDTSCP, INSTR_PAUSE, 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8eeee286-29a5-11e9-99f5-2ff9320bd3df Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 8eeee286-29a5-11e9-99f5-2ff9320bd3df; Wed, 06 Feb 2019 00:24:25 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grB0r-00077S-FW for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:24:25 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grB0r-0003tU-D1 for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:24:25 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 00:24:25 +0000 Subject: [Xen-changelog] [xen stable-4.9] x86emul: work around SandyBridge errata X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: 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xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:24:39 +0000 X-Inumbo-ID: 9504d388-29a5-11e9-aba0-6b81851f7d0f Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 9504d388-29a5-11e9-aba0-6b81851f7d0f; Wed, 06 Feb 2019 00:24:35 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grB11-00077a-MG for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:24:35 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grB11-0003u2-JX for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:24:35 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 00:24:35 +0000 Subject: [Xen-changelog] [xen stable-4.9] mm/page_alloc: fix MEMF_no_dma allocations for single NUMA X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list 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lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grB1D-00083E-JL for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:24:47 +0000 X-Inumbo-ID: 9b1b303a-29a5-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 9b1b303a-29a5-11e9-bc90-bc764e045a96; Wed, 06 Feb 2019 00:24:46 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grB1B-00078j-SV for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:24:45 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grB1B-0003uU-Q2 for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:24:45 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 00:24:45 +0000 Subject: [Xen-changelog] [xen stable-4.9] x86/AMD: flush TLB after ucode update X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDlmMWIwZTYwOWU3YWVmOTU1YzVhMGYyZGFiMWZjYjk2MTEwMGQxOTUKQXV0aG9yOiAg ICAgSmFuIEJldWxpY2ggPGpiZXVsaWNoQHN1c2UuY29tPgpBdXRob3JEYXRlOiBGcmkgRmViIDEg MTI6MDY6NDkgMjAxOSArMDEwMApDb21taXQ6ICAgICBKYW4gQmV1bGljaCA8amJldWxpY2hAc3Vz ZS5jb20+CkNvbW1pdERhdGU6IEZyaSBGZWIgMSAxMjowNjo0OSAyMDE5ICswMTAwCgogICAgeDg2 L0FNRDogZmx1c2ggVExCIGFmdGVyIHVjb2RlIHVwZGF0ZQogICAgCiAgICBUaGUgaW5jcmVhc2Vk IG51bWJlciBvZiBtZXNzYWdlcyAoc3BlY19jdHJsLmM6cHJpbnRfZGV0YWlscygpKSB3aXRoaW4g YQogICAgY2VydGFpbiB0aW1lIHdpbmRvdyBtYWRlIG1lIG5vdGljZSBzb21lIHNsb3duZXNzIG9m 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a12ca49d-29a5-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id a12ca49d-29a5-11e9-bc90-bc764e045a96; Wed, 06 Feb 2019 00:24:56 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grB1M-00078t-2R for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:24:56 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grB1M-0003v2-06 for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:24:56 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 00:24:56 +0000 Subject: [Xen-changelog] [xen stable-4.9] x86/hvm: Fix bit checking for CR4 and MSR_EFER X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: 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mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grB1W-00079E-8Z for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:25:06 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grB1W-0003vs-6D for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 00:25:06 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 00:25:06 +0000 Subject: [Xen-changelog] [xen stable-4.9] x86emul/test: fix build after "x86emul: fix 3-operand IMUL" X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" 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2019 12:11:05 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 12:11:05 +0000 Subject: [Xen-changelog] [xen staging] tools: drop obsolete xen-ringwatch X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDZiNmZmMDdmYmQ5ZWMxNzVmZmZmODZkMWY1MmZhYzYxZTg3ZTJlNTgKQXV0aG9yOiAg ICAgV2VpIExpdSA8d2VpLmxpdTJAY2l0cml4LmNvbT4KQXV0aG9yRGF0ZTogTW9uIEZlYiA0IDEz OjU4OjI0IDIwMTkgKzAwMDAKQ29tbWl0OiAgICAgV2VpIExpdSA8d2VpLmxpdTJAY2l0cml4LmNv bT4KQ29tbWl0RGF0ZTogV2VkIEZlYiA2IDEyOjA0OjI2IDIwMTkgKzAwMDAKCiAgICB0b29sczog 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Message-Id: Date: Wed, 06 Feb 2019 12:55:02 +0000 Subject: [Xen-changelog] [xen stable-4.10] VMX: fix vmx_handle_eoi() X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDE2ODg4YzNjODQ1NTM5MGNhNTZjYWRjMDUwNmZjZjgyN2NmZDQ2ZTUKQXV0aG9yOiAg ICAgSmFuIEJldWxpY2ggPGpiZXVsaWNoQHN1c2UuY29tPgpBdXRob3JEYXRlOiBGcmkgRmViIDEg MTE6NDE6MjEgMjAxOSArMDEwMApDb21taXQ6ICAgICBKYW4gQmV1bGljaCA8amJldWxpY2hAc3Vz ZS5jb20+CkNvbW1pdERhdGU6IEZyaSBGZWIgMSAxMTo0MToyMSAyMDE5ICswMTAwCgogICAgVk1Y OiBmaXggdm14X2hhbmRsZV9lb2koKQogICAgCiAgICBJbiBjb21taXQgMzAzMDY2ZmRiMWUgKCJW TVg6IGZpeCBpbnRlcmFjdGlvbiBvZiBBUElDLVYgYW5kIFZpcmlkaWFuCiAgICBlbXVsYXRpb24i 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1grMjS-0006pn-3y for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:55:14 +0000 X-Inumbo-ID: 7169afbd-2a0e-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 7169afbd-2a0e-11e9-bc90-bc764e045a96; Wed, 06 Feb 2019 12:55:13 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grMjR-0006qc-1N for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:55:13 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grMjQ-0005YB-Uy for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:55:12 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 12:55:12 +0000 Subject: [Xen-changelog] [xen stable-4.10] x86/HVM: __hvm_copy() should not write to p2m_ioreq_server pages X-BeenThere: xen-changelog@lists.xenproject.org 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us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 7d8bcf68-2a0e-11e9-9789-4fbc8fb3b151; Wed, 06 Feb 2019 12:55:33 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grMjl-0006r5-F1 for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:55:33 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grMjl-0005Ze-CK for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:55:33 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 12:55:33 +0000 Subject: [Xen-changelog] [xen stable-4.10] x86/soft-reset: Drop gfn reference after calling get_gfn_query() X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 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(unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 839f6874-2a0e-11e9-b4a2-4b4bc40e7ee3; Wed, 06 Feb 2019 12:55:43 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grMjv-0006re-LG for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:55:43 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grMjv-0005aH-Id for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:55:43 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 12:55:43 +0000 Subject: [Xen-changelog] [xen stable-4.10] ns16550/PCI: fix skipping of devices X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 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patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 12:55:53 +0000 Subject: [Xen-changelog] [xen stable-4.10] x86/shadow: don't enable shadow mode with too small a shadow allocation X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGMxMTkyNjdmMjVjNTUxM2UzNWI4YzEwM2FiNjkyM2MxZDEwNzVjNjgKQXV0aG9yOiAg ICAgSmFuIEJldWxpY2ggPGpiZXVsaWNoQHN1c2UuY29tPgpBdXRob3JEYXRlOiBGcmkgRmViIDEg MTE6NDU6MDEgMjAxOSArMDEwMApDb21taXQ6ICAgICBKYW4gQmV1bGljaCA8amJldWxpY2hAc3Vz ZS5jb20+CkNvbW1pdERhdGU6IEZyaSBGZWIgMSAxMTo0NTowMSAyMDE5ICswMTAwCgogICAgeDg2 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ZwpodHRwczovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= From xen-changelog-bounces@lists.xenproject.org Wed Feb 06 12:56:08 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Wed, 06 Feb 2019 12:56:08 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grMkK-00071x-Mo; Wed, 06 Feb 2019 12:56:08 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grMkJ-00071q-Nb for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:56:07 +0000 X-Inumbo-ID: 8fc7603e-2a0e-11e9-9968-37c6f4948113 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 8fc7603e-2a0e-11e9-9968-37c6f4948113; Wed, 06 Feb 2019 12:56:04 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grMkG-0006sv-1w for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:56:04 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grMkF-0005bw-Ve for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:56:03 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 12:56:03 +0000 Subject: [Xen-changelog] [xen stable-4.10] x86/VT-x: Don't activate VMCS Shadowing outside of nested vmx mode X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" 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mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grMkQ-0006t4-8d for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:56:14 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grMkQ-0005ct-68 for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:56:14 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 12:56:14 +0000 Subject: [Xen-changelog] [xen stable-4.10] x86/hvm: Corrections to RDTSCP intercept handling X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============6719342787888187423==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============6719342787888187423== Content-Type: text/plain commit 5f428061a5b2dd980b3047c197b5ff9d9757e010 Author: Andrew Cooper AuthorDate: Fri Feb 1 11:46:06 2019 +0100 Commit: Jan Beulich CommitDate: Fri Feb 1 11:46:06 2019 +0100 x86/hvm: Corrections to RDTSCP intercept handling For both VT-x and SVM, the RDTSCP intercept will trigger if the pipeline supports the instruction, but the guest may not have RDTSCP in its featureset. Bring the vmexit handlers in line with the main emulator behaviour by optionally handing back #UD. Next on the AMD side, if RDTSCP actually ends up being intercepted on a debug build or first-gen SVM hardware which lacks NRIP, we first update regs->rcx, then call __get_instruction_length() asking for RDTSC. As the two instructions are different (and indeed, different lengths!), __get_instruction_length_from_list() fails and hands back a #GP fault. This can demonstrated by putting a guest into tsc_mode="always emulate" and executing an RDTSCP instruction: (d1) --- Xen Test Framework --- (d1) Environment: HVM 64bit (Long mode 4 levels) (d1) Test rdtscp (d1) TSC mode 1 (XEN) emulate.c:147:d1v0 __get_instruction_length: Mismatch between expected and actual instruction: (XEN) emulate.c:152:d1v0 insn_index 8, opcode 0xf0031 modrm 0 (XEN) emulate.c:154:d1v0 rip 0x10475f, nextrip 0x104762, len 3 (XEN) SVM insn len emulation failed (1): d1v0 64bit @ 0008:0010475f -> 0f 01 f9 0f 31 5b 31 ff 31 c0 e9 c2 db ff ff 00 (d1) ****************************** (d1) PANIC: Unhandled exception at 0008:000000000010475f (d1) Vec 13 #GP[0000] (d1) ****************************** First, teach __get_instruction_length() to cope with RDTSCP, and improve svm_vmexit_do_rdtsc() to ask for the correct instruction. Move the regs->rcx adjustment into this function to ensure it gets done after we are done potentially raising faults. Reported-by: Paul Durrant Signed-off-by: Andrew Cooper Reviewed-by: Brian Woods Reviewed-by: Jan Beulich Reviewed-by: Kevin Tian Reviewed-by: Roger Pau Monné master commit: 3fd3fda9c26fc3c4f77250f795ed7ff9d38e2ec6 master date: 2018-12-17 16:28:03 +0000 --- xen/arch/x86/hvm/svm/emulate.c | 1 + xen/arch/x86/hvm/svm/svm.c | 22 +++++++++++++++++----- xen/arch/x86/hvm/vmx/vmx.c | 8 ++++++++ xen/include/asm-x86/hvm/svm/emulate.h | 1 + 4 files changed, 27 insertions(+), 5 deletions(-) diff --git a/xen/arch/x86/hvm/svm/emulate.c b/xen/arch/x86/hvm/svm/emulate.c index e1a158103c..2614af1363 100644 --- a/xen/arch/x86/hvm/svm/emulate.c +++ b/xen/arch/x86/hvm/svm/emulate.c @@ -74,6 +74,7 @@ static const struct { [INSTR_STGI] = { X86EMUL_OPC(0x0f, 0x01), MODRM(3, 3, 4) }, [INSTR_CLGI] = { X86EMUL_OPC(0x0f, 0x01), MODRM(3, 3, 5) }, [INSTR_INVLPGA] = { X86EMUL_OPC(0x0f, 0x01), MODRM(3, 3, 7) }, + [INSTR_RDTSCP] = { X86EMUL_OPC(0x0f, 0x01), MODRM(3, 7, 1) }, [INSTR_INVD] = { X86EMUL_OPC(0x0f, 0x08) }, [INSTR_WBINVD] = { X86EMUL_OPC(0x0f, 0x09) }, [INSTR_WRMSR] = { X86EMUL_OPC(0x0f, 0x30) }, diff --git a/xen/arch/x86/hvm/svm/svm.c b/xen/arch/x86/hvm/svm/svm.c index aad3655855..25fc9f2288 100644 --- a/xen/arch/x86/hvm/svm/svm.c +++ b/xen/arch/x86/hvm/svm/svm.c @@ -2264,14 +2264,28 @@ static void svm_vmexit_do_hlt(struct vmcb_struct *vmcb, hvm_hlt(regs->eflags); } -static void svm_vmexit_do_rdtsc(struct cpu_user_regs *regs) +static void svm_vmexit_do_rdtsc(struct cpu_user_regs *regs, bool rdtscp) { + struct vcpu *curr = current; + const struct domain *currd = curr->domain; + enum instruction_index insn = rdtscp ? INSTR_RDTSCP : INSTR_RDTSC; unsigned int inst_len; - if ( (inst_len = __get_instruction_length(current, INSTR_RDTSC)) == 0 ) + if ( rdtscp && !currd->arch.cpuid->extd.rdtscp && + currd->arch.tsc_mode != TSC_MODE_PVRDTSCP ) + { + hvm_inject_hw_exception(TRAP_invalid_op, X86_EVENT_NO_EC); return; + } + + if ( (inst_len = __get_instruction_length(curr, insn)) == 0 ) + return; + __update_guest_eip(regs, inst_len); + if ( rdtscp ) + regs->rcx = hvm_msr_tsc_aux(curr); + hvm_rdtsc_intercept(regs); } @@ -2892,10 +2906,8 @@ void svm_vmexit_handler(struct cpu_user_regs *regs) break; case VMEXIT_RDTSCP: - regs->rcx = hvm_msr_tsc_aux(v); - /* fall through */ case VMEXIT_RDTSC: - svm_vmexit_do_rdtsc(regs); + svm_vmexit_do_rdtsc(regs, exit_reason == VMEXIT_RDTSCP); break; case VMEXIT_MONITOR: diff --git a/xen/arch/x86/hvm/vmx/vmx.c b/xen/arch/x86/hvm/vmx/vmx.c index a3ea3d4824..e28d7963b7 100644 --- a/xen/arch/x86/hvm/vmx/vmx.c +++ b/xen/arch/x86/hvm/vmx/vmx.c @@ -3595,6 +3595,7 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs) unsigned long exit_qualification, exit_reason, idtv_info, intr_info = 0; unsigned int vector = 0, mode; struct vcpu *v = current; + struct domain *currd = v->domain; __vmread(GUEST_RIP, ®s->rip); __vmread(GUEST_RSP, ®s->rsp); @@ -3958,6 +3959,13 @@ void vmx_vmexit_handler(struct cpu_user_regs *regs) vmx_invlpg_intercept(exit_qualification); break; case EXIT_REASON_RDTSCP: + if ( !currd->arch.cpuid->extd.rdtscp && + currd->arch.tsc_mode != TSC_MODE_PVRDTSCP ) + { + hvm_inject_hw_exception(TRAP_invalid_op, X86_EVENT_NO_EC); + break; + } + regs->rcx = hvm_msr_tsc_aux(v); /* fall through */ case EXIT_REASON_RDTSC: diff --git a/xen/include/asm-x86/hvm/svm/emulate.h b/xen/include/asm-x86/hvm/svm/emulate.h index 7c1dcd186a..ccb654f1dd 100644 --- a/xen/include/asm-x86/hvm/svm/emulate.h +++ b/xen/include/asm-x86/hvm/svm/emulate.h @@ -30,6 +30,7 @@ enum instruction_index { INSTR_HLT, INSTR_INT3, INSTR_RDTSC, + INSTR_RDTSCP, INSTR_PAUSE, 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us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id a217ff26-2a0e-11e9-bc90-bc764e045a96; Wed, 06 Feb 2019 12:56:35 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grMkk-0006tK-PV for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:56:34 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grMkk-0005eS-N1 for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:56:34 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 12:56:34 +0000 Subject: [Xen-changelog] [xen stable-4.10] x86emul: work around SandyBridge errata X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; 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from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id a8409f00-2a0e-11e9-bc90-bc764e045a96; Wed, 06 Feb 2019 12:56:45 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grMku-0006ty-Vp for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:56:44 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grMku-0005g3-T9 for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:56:44 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 12:56:44 +0000 Subject: [Xen-changelog] [xen stable-4.10] mm/page_alloc: fix MEMF_no_dma allocations for single NUMA X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: 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2019 12:56:58 +0000 X-Inumbo-ID: ae48c494-2a0e-11e9-a2bd-6f5afa37b98b Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id ae48c494-2a0e-11e9-a2bd-6f5afa37b98b; Wed, 06 Feb 2019 12:56:55 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grMl5-0006uE-7W for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:56:55 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grMl5-0005gj-4f for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:56:55 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 12:56:55 +0000 Subject: [Xen-changelog] [xen stable-4.10] xen/cmdline: Fix buggy strncmp(s, LITERAL, ss - s) construct X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive 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Oi8vbGlzdHMueGVucHJvamVjdC5vcmcveGVuLWNoYW5nZWxvZw== From xen-changelog-bounces@lists.xenproject.org Wed Feb 06 12:57:10 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Wed, 06 Feb 2019 12:57:10 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grMlK-0007A7-4F; Wed, 06 Feb 2019 12:57:10 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grMlI-00079x-Jk for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:57:08 +0000 X-Inumbo-ID: b45d9c4c-2a0e-11e9-b99a-3b523508a522 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id b45d9c4c-2a0e-11e9-b99a-3b523508a522; Wed, 06 Feb 2019 12:57:05 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grMlF-0006uW-E4 for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:57:05 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grMlF-0005hR-BY for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:57:05 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 12:57:05 +0000 Subject: [Xen-changelog] [xen stable-4.10] x86/AMD: flush TLB after ucode update X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGVkOTQ0ZjI4Yzg1ZGY5NTA0MmQ2NTEzMzdhNDA1YTZiOGE1YmFmYTEKQXV0aG9yOiAg 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archives@lists.xen.org Delivery-date: Wed, 06 Feb 2019 12:57:19 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grMlT-0007BR-84; Wed, 06 Feb 2019 12:57:19 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grMlS-0007BF-11 for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:57:18 +0000 X-Inumbo-ID: ba720e6a-2a0e-11e9-b203-07f082037716 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id ba720e6a-2a0e-11e9-b203-07f082037716; Wed, 06 Feb 2019 12:57:15 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grMlP-0006uj-Kb for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:57:15 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grMlP-0005iC-Hz for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:57:15 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 12:57:15 +0000 Subject: [Xen-changelog] [xen stable-4.10] x86/hvm: Fix bit checking for CR4 and MSR_EFER X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGQ1NTEzZGI5YzMyYzIxOTA1YzBhNzM3NzhhNTNmYTFhMjdmMzMyMWUKQXV0aG9yOiAg ICAgQW5kcmV3IENvb3BlciA8YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT4KQXV0aG9yRGF0ZTog RnJpIEZlYiAxIDExOjQ5OjMwIDIwMTkgKzAxMDAKQ29tbWl0OiAgICAgSmFuIEJldWxpY2ggPGpi 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(Exim 4.89) (envelope-from ) id 1grMlZ-0005ig-O5 for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:57:25 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 12:57:25 +0000 Subject: [Xen-changelog] [xen stable-4.10] correct release note link in SUPPORT.md X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDA2OTVlNjcxMDJkZTZiNzM3YmFmMWI4OGUyY2RmY2NiYjJjYjU2ZmEKQXV0aG9yOiAg ICAgSnVlcmdlbiBHcm9zcyA8amdyb3NzQHN1c2UuY29tPgpBdXRob3JEYXRlOiBGcmkgRmViIDEg MTI6Mzc6MTcgMjAxOSArMDEwMApDb21taXQ6ICAgICBKYW4gQmV1bGljaCA8amJldWxpY2hAc3Vz 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c69506c8-2a0e-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id c69506c8-2a0e-11e9-bc90-bc764e045a96; Wed, 06 Feb 2019 12:57:36 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grMlk-0006uz-0F for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:57:36 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grMlj-0005jI-U2 for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 12:57:35 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 12:57:35 +0000 Subject: [Xen-changelog] [xen stable-4.10] x86emul/test: fix build after "x86emul: fix 3-operand IMUL" X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , 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c3RzLnhlbnByb2plY3Qub3JnCmh0dHBzOi8vbGlzdHMueGVucHJvamVjdC5vcmcveGVuLWNoYW5n ZWxvZw== From xen-changelog-bounces@lists.xenproject.org Wed Feb 06 18:55:09 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Wed, 06 Feb 2019 18:55:09 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grSLj-0007TU-5W; Wed, 06 Feb 2019 18:55:07 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grSLh-0007TP-5o for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 18:55:05 +0000 X-Inumbo-ID: b5f6dd8b-2a40-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id b5f6dd8b-2a40-11e9-bc90-bc764e045a96; Wed, 06 Feb 2019 18:55:03 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) 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helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grSLt-0007Ud-KI for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 18:55:17 +0000 X-Inumbo-ID: bc0c5faa-2a40-11e9-ad42-a38c5ef99033 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id bc0c5faa-2a40-11e9-ad42-a38c5ef99033; Wed, 06 Feb 2019 18:55:13 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grSLp-000602-4u for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 18:55:13 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grSLp-0000X7-1T for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 18:55:13 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 18:55:13 +0000 Subject: [Xen-changelog] [xen stable-4.11] libxl: correctly dispose of dominfo list in libxl_name_to_domid X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDg3ZjUxYmYzNjZjYTc5Yjk4ZTFlMjAxYmY5YmQ3YTljMTY0NjMxZTIKQXV0aG9yOiAg ICAgV2VpIExpdSA8d2VpLmxpdTJAY2l0cml4LmNvbT4KQXV0aG9yRGF0ZTogVHVlIEphbiAyOSAx MTozNzo1OSAyMDE5ICswMDAwCkNvbW1pdDogICAgIElhbiBKYWNrc29uIDxpYW4uamFja3NvbkBl dS5jaXRyaXguY29tPgpDb21taXREYXRlOiBUdWUgRmViIDUgMTE6NTc6MzIgMjAxOSArMDAwMAoK ICAgIGxpYnhsOiBjb3JyZWN0bHkgZGlzcG9zZSBvZiBkb21pbmZvIGxpc3QgaW4gbGlieGxfbmFt ZV90b19kb21pZAogICAgCiAgICBUYW1hcyByZXBvcnRlZCBzc2lkX2xhYmVsIHdhcyBsZWFrZWQu IFVzZSB0aGUgZGVzaWduYXRlZCBmdW5jdGlvbiB0bwogICAgZnJlZSBkb21pbmZvIGxpc3QgdG8g 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06fe1454-2a46-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 06fe1454-2a46-11e9-bc90-bc764e045a96; Wed, 06 Feb 2019 19:33:06 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grSwU-0006iV-BI for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 19:33:06 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grSwU-0003pB-7S for xen-changelog@lists.xenproject.org; Wed, 06 Feb 2019 19:33:06 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 06 Feb 2019 19:33:06 +0000 Subject: [Xen-changelog] [xen staging] arm: gic-v3: deactivate interrupts during initialization X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: 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Lm9yZwpodHRwczovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= From xen-changelog-bounces@lists.xenproject.org Thu Feb 07 12:22:16 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 07 Feb 2019 12:22:16 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grih6-0005r2-5o; Thu, 07 Feb 2019 12:22:16 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grih4-0005qv-S6 for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 12:22:14 +0000 X-Inumbo-ID: ffb86e66-2ad2-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id ffb86e66-2ad2-11e9-bc90-bc764e045a96; Thu, 07 Feb 2019 12:22:13 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grih3-0006H4-6v for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 12:22:13 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grih3-0007Q7-4G for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 12:22:13 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 07 Feb 2019 12:22:13 +0000 Subject: [Xen-changelog] [xen stable-4.10] libxl: correctly dispose of dominfo list in libxl_name_to_domid X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGUyMWM3OWZlNGZkMjA0ZWNhMGM2YjlmNzkxMDJlMzgyNmRiNzMzNGEKQXV0aG9yOiAg 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13:33:05 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grjnd-0002qS-0I for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:33:05 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 07 Feb 2019 13:33:05 +0000 Subject: [Xen-changelog] [xen staging] argo: Introduce the Kconfig option to govern inclusion of Argo X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDZhZmRkNTcwMDJkYzFjMWQ3MGFkYmI5MDA0M2I0NGI4ZGZlYzdjY2MKQXV0aG9yOiAg ICAgQ2hyaXN0b3BoZXIgQ2xhcmsgPGNocmlzdG9waGVyLncuY2xhcmtAZ21haWwuY29tPgpBdXRo 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from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjnq-0003wv-H8; Thu, 07 Feb 2019 13:33:18 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjno-0003wn-Ue for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:33:16 +0000 X-Inumbo-ID: ec29ebbc-2adc-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id ec29ebbc-2adc-11e9-bc90-bc764e045a96; Thu, 07 Feb 2019 13:33:15 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjnn-0007eR-9i for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:33:15 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grjnn-0002r0-72 for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:33:15 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 07 Feb 2019 13:33:15 +0000 Subject: [Xen-changelog] [xen staging] argo: introduce the argo_op hypercall boilerplate X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDFkZGMwZDQzYzIwY2IxYzExMjVkNGQ2Y2VmYzc4NjI0YjJhOWNjYjcKQXV0aG9yOiAg ICAgQ2hyaXN0b3BoZXIgQ2xhcmsgPGNocmlzdG9waGVyLncuY2xhcmtAZ21haWwuY29tPgpBdXRo b3JEYXRlOiBXZWQgRmViIDYgMDk6NTU6MDAgMjAxOSArMDEwMApDb21taXQ6ICAgICBKYW4gQmV1 bGljaCA8amJldWxpY2hAc3VzZS5jb20+CkNvbW1pdERhdGU6IFRodSBGZWIgNyAxNDoxOTozOSAy 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archives@lists.xen.org Delivery-date: Thu, 07 Feb 2019 13:33:27 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjnz-0003xy-Im; Thu, 07 Feb 2019 13:33:27 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjny-0003xq-LK for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:33:26 +0000 X-Inumbo-ID: f237b0c3-2adc-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id f237b0c3-2adc-11e9-bc90-bc764e045a96; Thu, 07 Feb 2019 13:33:25 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjnx-0007eZ-Fm for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:33:25 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grjnx-0002rY-DG for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:33:25 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 07 Feb 2019 13:33:25 +0000 Subject: [Xen-changelog] [xen staging] argo: define argo_dprintk for subsystem debugging X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============2829701656504872789==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============2829701656504872789== Content-Type: text/plain commit c452c85f6fe6ad09c0b46b77c45216863f12c5b4 Author: Christopher Clark AuthorDate: Wed Feb 6 09:55:00 2019 +0100 Commit: Jan Beulich CommitDate: Thu Feb 7 14:20:38 2019 +0100 argo: define argo_dprintk for subsystem debugging A convenience for working on development of the argo subsystem: setting a #define variable enables additional debug messages. Signed-off-by: Christopher Clark Acked-by: Jan Beulich Reviewed-by: Roger Pau Monné --- xen/common/argo.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/xen/common/argo.c b/xen/common/argo.c index dd2390d3f3..ada1aaf937 100644 --- a/xen/common/argo.c +++ b/xen/common/argo.c @@ -19,6 +19,15 @@ #include #include +/* Change this to #define ARGO_DEBUG here to enable more debug messages */ +#undef ARGO_DEBUG + +#ifdef ARGO_DEBUG +#define argo_dprintk(format, args...) printk("argo: " format, ## args ) +#else +#define argo_dprintk(format, ... ) ((void)0) +#endif + long do_argo_op(unsigned int cmd, XEN_GUEST_HANDLE_PARAM(void) arg1, XEN_GUEST_HANDLE_PARAM(void) arg2, unsigned long raw_arg3, -- generated by git-patchbot for /home/xen/git/xen.git#staging --===============2829701656504872789== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============2829701656504872789==-- From xen-changelog-bounces@lists.xenproject.org Thu Feb 07 13:33:39 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 07 Feb 2019 13:33:39 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjoB-0003zJ-Kw; Thu, 07 Feb 2019 13:33:39 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjoA-0003z9-DO for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:33:38 +0000 X-Inumbo-ID: f849e6e1-2adc-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id f849e6e1-2adc-11e9-bc90-bc764e045a96; Thu, 07 Feb 2019 13:33:36 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjo7-0007f9-MP for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:33:35 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grjo7-0002sB-Jp for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:33:35 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 07 Feb 2019 13:33:35 +0000 Subject: [Xen-changelog] [xen staging] argo: init, destroy and soft-reset, with enable command line opt X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============8545239168114199136==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============8545239168114199136== Content-Type: text/plain commit 82a817307c5b12035555de05035185cc9e03c2b5 Author: Christopher Clark AuthorDate: Wed Feb 6 09:55:00 2019 +0100 Commit: Jan Beulich CommitDate: Thu Feb 7 14:20:50 2019 +0100 argo: init, destroy and soft-reset, with enable command line opt Initialises basic data structures and performs teardown of argo state for domain shutdown. Inclusion of the Argo implementation is dependent on CONFIG_ARGO. Introduces a new Xen command line parameter 'argo': bool to enable/disable the argo hypercall. Defaults to disabled. New headers: public/argo.h: with definions of addresses and ring structure, including indexes for atomic update for communication between domain and hypervisor. xen/argo.h: to expose the hooks for integration into domain lifecycle: argo_init: per-domain init of argo data structures for domain_create. argo_destroy: teardown for domain_destroy and the error exit path of domain_create. argo_soft_reset: reset of domain state for domain_soft_reset. Adds a new field to struct domain: struct argo_domain *argo; In accordance with recent work on _domain_destroy, argo_destroy is idempotent. It will tear down: all rings registered by this domain, all rings where this domain is the single sender (ie. specified partner, non-wildcard rings), and all pending notifications where this domain is awaiting signal about available space in the rings of other domains. A count will be maintained of the number of rings that a domain has registered in order to limit it below the fixed maximum limit defined here. Macros are defined to verify the internal locking state within the argo implementation. The macros are ASSERTed on entry to functions to validate and document the required lock state prior to calling. The hash function for the hashtables that hold ring state is derived from the string hashing function djb2 (http://www.cse.yorku.ca/~oz/hash.html) by Daniel J. Bernstein. Basic testing with a limited number of domains and ports has shown reasonable distribution for the table size. The software license on the public header is the BSD license, standard procedure for the public Xen headers. The public header was originally posted under a GPL license at: [1]: https://lists.xenproject.org/archives/html/xen-devel/2013-05/msg02710.html The following ACK by Lars Kurth is to confirm that only people being employees of Citrix contributed to the header files in the series posted at [1] and that thus the copyright of the files in question is fully owned by Citrix. The ACK also confirms that Citrix is happy for the header files to be published under a BSD license in this series (which is based on [1]). Signed-off-by: Christopher Clark Acked-by: Lars Kurth Reviewed-by: Ross Philipson Tested-by: Chris Patterson Reviewed-by: Roger Pau Monné Release-acked-by: Juergen Gross --- docs/misc/xen-command-line.pandoc | 13 + xen/common/argo.c | 624 +++++++++++++++++++++++++++++++++++++- xen/common/domain.c | 9 + xen/include/Makefile | 1 + xen/include/public/argo.h | 64 ++++ xen/include/xen/argo.h | 44 +++ xen/include/xen/sched.h | 5 + xen/include/xlat.lst | 2 + 8 files changed, 760 insertions(+), 2 deletions(-) diff --git a/docs/misc/xen-command-line.pandoc b/docs/misc/xen-command-line.pandoc index 6a3377519b..605c544bd3 100644 --- a/docs/misc/xen-command-line.pandoc +++ b/docs/misc/xen-command-line.pandoc @@ -182,6 +182,19 @@ Permit Xen to use "Always Running APIC Timer" support on compatible hardware in combination with cpuidle. This option is only expected to be useful for developers wishing Xen to fall back to older timing methods on newer hardware. +### argo + = List of [ ] + +Controls for the Argo hypervisor-mediated interdomain communication service. + +The functionality that this option controls is only available when Xen has been +compiled with the build setting for Argo enabled in the build configuration. + +Argo is a interdomain communication mechanism, where Xen acts as the central +point of authority. Guests may register memory rings to recieve messages, +query the status of other domains, and send messages by hypercall, all subject +to appropriate auditing by Xen. Argo is disabled by default. + ### asid (x86) > `= ` diff --git a/xen/common/argo.c b/xen/common/argo.c index ada1aaf937..f1626ca520 100644 --- a/xen/common/argo.c +++ b/xen/common/argo.c @@ -16,8 +16,261 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ +#include +#include +#include #include +#include #include +#include +#include +#include + +#include + +#ifdef CONFIG_COMPAT +#include +CHECK_argo_addr; +CHECK_argo_ring; +#endif + +DEFINE_XEN_GUEST_HANDLE(xen_argo_addr_t); +DEFINE_XEN_GUEST_HANDLE(xen_argo_ring_t); + +static bool __read_mostly opt_argo; + +static int __init parse_argo(const char *s) +{ + const char *ss; + int val, rc = 0; + + do { + ss = strchr(s, ','); + if ( !ss ) + ss = strchr(s, '\0'); + + if ( (val = parse_bool(s, ss)) >= 0 ) + opt_argo = val; + else + rc = -EINVAL; + + s = ss + 1; + } while ( *ss ); + + return rc; +} +custom_param("argo", parse_argo); + +typedef struct argo_ring_id +{ + xen_argo_port_t aport; + domid_t partner_id; + domid_t domain_id; +} argo_ring_id; + +/* Data about a domain's own ring that it has registered */ +struct argo_ring_info +{ + /* next node in the hash, protected by rings_L2 */ + struct list_head node; + /* this ring's id, protected by rings_L2 */ + struct argo_ring_id id; + /* L3, the ring_info lock: protects the members of this struct below */ + spinlock_t L3_lock; + /* length of the ring, protected by L3 */ + unsigned int len; + /* number of pages translated into mfns, protected by L3 */ + unsigned int nmfns; + /* cached tx pointer location, protected by L3 */ + unsigned int tx_ptr; + /* mapped ring pages protected by L3 */ + void **mfn_mapping; + /* list of mfns of guest ring, protected by L3 */ + mfn_t *mfns; + /* list of struct pending_ent for this ring, protected by L3 */ + struct list_head pending; + /* number of pending entries queued for this ring, protected by L3 */ + unsigned int npending; +}; + +/* Data about a single-sender ring, held by the sender (partner) domain */ +struct argo_send_info +{ + /* next node in the hash, protected by send_L2 */ + struct list_head node; + /* this ring's id, protected by send_L2 */ + struct argo_ring_id id; +}; + +/* A space-available notification that is awaiting sufficient space */ +struct pending_ent +{ + /* List node within argo_ring_info's pending list */ + struct list_head node; + /* + * List node within argo_domain's wildcard_pend_list. Only used if the + * ring is one with a wildcard partner (ie. that any domain may send to) + * to enable cancelling signals on wildcard rings on domain destroy. + */ + struct list_head wildcard_node; + /* + * Pointer to the ring_info that this ent pertains to. Used to ensure that + * ring_info->npending is decremented when ents for wildcard rings are + * cancelled for domain destroy. + * Caution: Must hold the correct locks before accessing ring_info via this. + */ + struct argo_ring_info *ring_info; + /* minimum ring space available that this signal is waiting upon */ + unsigned int len; + /* domain to be notified when space is available */ + domid_t domain_id; +}; + +/* + * The value of the argo element in a struct domain is + * protected by L1_global_argo_rwlock + */ +#define ARGO_HASHTABLE_SIZE 32 +struct argo_domain +{ + /* rings_L2 */ + rwlock_t rings_L2_rwlock; + /* + * Hash table of argo_ring_info about rings this domain has registered. + * Protected by rings_L2. + */ + struct list_head ring_hash[ARGO_HASHTABLE_SIZE]; + /* Counter of rings registered by this domain. Protected by rings_L2. */ + unsigned int ring_count; + + /* send_L2 */ + spinlock_t send_L2_lock; + /* + * Hash table of argo_send_info about rings other domains have registered + * for this domain to send to. Single partner, non-wildcard rings. + * Protected by send_L2. + */ + struct list_head send_hash[ARGO_HASHTABLE_SIZE]; + + /* wildcard_L2 */ + spinlock_t wildcard_L2_lock; + /* + * List of pending space-available signals for this domain about wildcard + * rings registered by other domains. Protected by wildcard_L2. + */ + struct list_head wildcard_pend_list; +}; + +/* + * Locking is organized as follows: + * + * Terminology: R() means taking a read lock on the specified lock; + * W() means taking a write lock on it. + * + * == L1 : The global read/write lock: L1_global_argo_rwlock + * Protects the argo elements of all struct domain *d in the system. + * + * R(L1) does not protect any of the elements of d->argo; it protects their + * addresses. W(L1) protects those and more since it implies W on all the lower + * level locks - see the notes on those locks below. + * + * The destruction of an argo-enabled domain, which must have a non-NULL d->argo + * pointer, will need to free that d->argo pointer, which requires W(L1). + * Since holding R(L1) will block acquiring W(L1), it will ensure that + * no domains pointers that argo is interested in become invalid while either + * W(L1) or R(L1) are held. + */ + +static DEFINE_RWLOCK(L1_global_argo_rwlock); /* L1 */ + +/* + * == rings_L2 : The per-domain ring hash lock: d->argo->rings_L2_rwlock + * + * Holding a read lock on rings_L2 protects the ring hash table and + * the elements in the hash_table d->argo->ring_hash, and + * the node and id fields in struct argo_ring_info in the + * hash table. + * Holding a write lock on rings_L2 protects all of the elements of all the + * struct argo_ring_info belonging to this domain. + * + * To take rings_L2 you must already have R(L1). W(L1) implies W(rings_L2) and + * L3. + * + * == L3 : The individual ring_info lock: ring_info->L3_lock + * + * Protects all the fields within the argo_ring_info, aside from the ones that + * rings_L2 already protects: node, id, lock. + * + * To acquire L3 you must already have R(rings_L2). W(rings_L2) implies L3. + * + * == send_L2 : The per-domain single-sender partner rings lock: + * d->argo->send_L2_lock + * + * Protects the per-domain send hash table : d->argo->send_hash + * and the elements in the hash table, and the node and id fields + * in struct argo_send_info in the hash table. + * + * To take send_L2, you must already have R(L1). W(L1) implies send_L2. + * Do not attempt to acquire a rings_L2 on any domain after taking and while + * holding a send_L2 lock -- acquire the rings_L2 (if one is needed) beforehand. + * + * == wildcard_L2 : The per-domain wildcard pending list lock: + * d->argo->wildcard_L2_lock + * + * Protects the per-domain list of outstanding signals for space availability + * on wildcard rings. + * + * To take wildcard_L2, you must already have R(L1). W(L1) implies wildcard_L2. + * No other locks are acquired after obtaining wildcard_L2. + */ + +/* + * Lock state validations macros + * + * These macros encode the logic to verify that the locking has adhered to the + * locking discipline above. + * eg. On entry to logic that requires holding at least R(rings_L2), this: + * ASSERT(LOCKING_Read_rings_L2(d)); + * + * checks that the lock state is sufficient, validating that one of the + * following must be true when executed: R(rings_L2) && R(L1) + * or: W(rings_L2) && R(L1) + * or: W(L1) + * + * The LOCKING macros defined below here are for use at verification points. + */ +#define LOCKING_Write_L1 (rw_is_write_locked(&L1_global_argo_rwlock)) +/* + * While LOCKING_Read_L1 will return true even if the lock is write-locked, + * that's OK because everywhere that a Read lock is needed with these macros, + * holding a Write lock there instead is OK too: we're checking that _at least_ + * the specified level of locks are held. + */ +#define LOCKING_Read_L1 (rw_is_locked(&L1_global_argo_rwlock)) + +#define LOCKING_Write_rings_L2(d) \ + ((LOCKING_Read_L1 && rw_is_write_locked(&(d)->argo->rings_L2_rwlock)) || \ + LOCKING_Write_L1) +/* + * Skip checking LOCKING_Write_rings_L2(d) within this LOCKING_Read_rings_L2 + * definition because the first clause that is testing R(L1) && R(L2) will also + * return true if R(L1) && W(L2) is true, because of the way that rw_is_locked + * behaves. This results in a slightly shorter and faster implementation. + */ +#define LOCKING_Read_rings_L2(d) \ + ((LOCKING_Read_L1 && rw_is_locked(&(d)->argo->rings_L2_rwlock)) || \ + LOCKING_Write_L1) +/* + * Skip checking LOCKING_Write_L1 within this LOCKING_L3 definition because + * LOCKING_Write_rings_L2(d) will return true for that condition. + */ +#define LOCKING_L3(d, r) \ + ((LOCKING_Read_L1 && rw_is_locked(&(d)->argo->rings_L2_rwlock) \ + && spin_is_locked(&(r)->L3_lock)) || LOCKING_Write_rings_L2(d)) + +#define LOCKING_send_L2(d) \ + ((LOCKING_Read_L1 && spin_is_locked(&(d)->argo->send_L2_lock)) || \ + LOCKING_Write_L1) /* Change this to #define ARGO_DEBUG here to enable more debug messages */ #undef ARGO_DEBUG @@ -28,12 +281,289 @@ #define argo_dprintk(format, ... ) ((void)0) #endif +/* + * This hash function is used to distribute rings within the per-domain + * hash tables (d->argo->ring_hash and d->argo_send_hash). The hash table + * will provide a struct if a match is found with a 'argo_ring_id' key: + * ie. the key is a (domain id, argo port, partner domain id) tuple. + * The algorithm approximates the string hashing function 'djb2'. + */ +static unsigned int +hash_index(const struct argo_ring_id *id) +{ + unsigned int hash = 5381; /* prime constant from djb2 */ + + /* For each input: hash = hash * 33 + */ + hash = ((hash << 5) + hash) + (id->aport & 0xff); + hash = ((hash << 5) + hash) + ((id->aport >> 8) & 0xff); + hash = ((hash << 5) + hash) + ((id->aport >> 16) & 0xff); + hash = ((hash << 5) + hash) + ((id->aport >> 24) & 0xff); + hash = ((hash << 5) + hash) + (id->domain_id & 0xff); + hash = ((hash << 5) + hash) + ((id->domain_id >> 8) & 0xff); + hash = ((hash << 5) + hash) + (id->partner_id & 0xff); + hash = ((hash << 5) + hash) + ((id->partner_id >> 8) & 0xff); + + /* + * Since ARGO_HASHTABLE_SIZE is small, use higher-order bits of the + * hash to contribute to the lower-order bits before masking off. + */ + return (hash ^ (hash >> 15)) & (ARGO_HASHTABLE_SIZE - 1); +} + +static struct argo_ring_info * +find_ring_info(const struct domain *d, const struct argo_ring_id *id) +{ + struct argo_ring_info *ring_info; + const struct list_head *bucket; + + ASSERT(LOCKING_Read_rings_L2(d)); + + /* List is not modified here. Search and return the match if found. */ + bucket = &d->argo->ring_hash[hash_index(id)]; + + list_for_each_entry(ring_info, bucket, node) + { + const struct argo_ring_id *cmpid = &ring_info->id; + + if ( cmpid->aport == id->aport && + cmpid->domain_id == id->domain_id && + cmpid->partner_id == id->partner_id ) + { + argo_dprintk("found ring_info for ring(%u:%x %u)\n", + id->domain_id, id->aport, id->partner_id); + return ring_info; + } + } + argo_dprintk("no ring_info for ring(%u:%x %u)\n", + id->domain_id, id->aport, id->partner_id); + + return NULL; +} + +static void +ring_unmap(const struct domain *d, struct argo_ring_info *ring_info) +{ + unsigned int i; + + ASSERT(LOCKING_L3(d, ring_info)); + + if ( !ring_info->mfn_mapping ) + return; + + ASSERT(!ring_info->nmfns || ring_info->mfns); + + for ( i = 0; i < ring_info->nmfns; i++ ) + { + if ( !ring_info->mfn_mapping[i] ) + continue; + + ASSERT(!mfn_eq(ring_info->mfns[i], INVALID_MFN)); + argo_dprintk(XENLOG_ERR "argo: unmapping page %"PRI_mfn" from %p\n", + mfn_x(ring_info->mfns[i]), ring_info->mfn_mapping[i]); + + unmap_domain_page_global(ring_info->mfn_mapping[i]); + ring_info->mfn_mapping[i] = NULL; + } +} + +static void +wildcard_pending_list_remove(domid_t domain_id, struct pending_ent *ent) +{ + struct domain *d = get_domain_by_id(domain_id); + + if ( !d ) + return; + + ASSERT(LOCKING_Read_L1); + + if ( d->argo ) + { + spin_lock(&d->argo->wildcard_L2_lock); + list_del(&ent->wildcard_node); + spin_unlock(&d->argo->wildcard_L2_lock); + } + put_domain(d); +} + +static void +pending_remove_all(const struct domain *d, struct argo_ring_info *ring_info) +{ + struct pending_ent *ent; + + ASSERT(LOCKING_L3(d, ring_info)); + + /* Delete all pending notifications from this ring's list. */ + while ( (ent = list_first_entry_or_null(&ring_info->pending, + struct pending_ent, node)) ) + { + /* For wildcard rings, remove each from their wildcard list too. */ + if ( ring_info->id.partner_id == XEN_ARGO_DOMID_ANY ) + wildcard_pending_list_remove(ent->domain_id, ent); + list_del(&ent->node); + xfree(ent); + } + ring_info->npending = 0; +} + +static void +wildcard_rings_pending_remove(struct domain *d) +{ + struct pending_ent *ent; + + ASSERT(LOCKING_Write_L1); + + /* Delete all pending signals to the domain about wildcard rings. */ + while ( (ent = list_first_entry_or_null(&d->argo->wildcard_pend_list, + struct pending_ent, node)) ) + { + /* + * The ent->node deleted here, and the npending value decreased, + * belong to the ring_info of another domain, which is why this + * function requires holding W(L1): + * it implies the L3 lock that protects that ring_info struct. + */ + ent->ring_info->npending--; + list_del(&ent->node); + list_del(&ent->wildcard_node); + xfree(ent); + } +} + +static void +ring_remove_mfns(const struct domain *d, struct argo_ring_info *ring_info) +{ + unsigned int i; + + ASSERT(LOCKING_Write_rings_L2(d)); + + if ( !ring_info->mfns ) + return; + + if ( !ring_info->mfn_mapping ) + { + ASSERT_UNREACHABLE(); + return; + } + + ring_unmap(d, ring_info); + + for ( i = 0; i < ring_info->nmfns; i++ ) + if ( !mfn_eq(ring_info->mfns[i], INVALID_MFN) ) + put_page_and_type(mfn_to_page(ring_info->mfns[i])); + + ring_info->nmfns = 0; + XFREE(ring_info->mfns); + XFREE(ring_info->mfn_mapping); +} + +static void +ring_remove_info(const struct domain *d, struct argo_ring_info *ring_info) +{ + ASSERT(LOCKING_Write_rings_L2(d)); + + pending_remove_all(d, ring_info); + list_del(&ring_info->node); + ring_remove_mfns(d, ring_info); + xfree(ring_info); +} + +static void +domain_rings_remove_all(struct domain *d) +{ + unsigned int i; + + ASSERT(LOCKING_Write_rings_L2(d)); + + for ( i = 0; i < ARGO_HASHTABLE_SIZE; ++i ) + { + struct argo_ring_info *ring_info; + struct list_head *bucket = &d->argo->ring_hash[i]; + + while ( (ring_info = list_first_entry_or_null(bucket, + struct argo_ring_info, + node)) ) + ring_remove_info(d, ring_info); + } + d->argo->ring_count = 0; +} + +/* + * Tear down all rings of other domains where src_d domain is the partner. + * (ie. it is the single domain that can send to those rings.) + * This will also cancel any pending notifications about those rings. + */ +static void +partner_rings_remove(struct domain *src_d) +{ + unsigned int i; + + ASSERT(LOCKING_Write_L1); + + for ( i = 0; i < ARGO_HASHTABLE_SIZE; ++i ) + { + struct argo_send_info *send_info; + struct list_head *bucket = &src_d->argo->send_hash[i]; + + /* Remove all ents from the send list. Take each off their ring list. */ + while ( (send_info = list_first_entry_or_null(bucket, + struct argo_send_info, + node)) ) + { + struct domain *dst_d = get_domain_by_id(send_info->id.domain_id); + + if ( dst_d && dst_d->argo ) + { + struct argo_ring_info *ring_info = + find_ring_info(dst_d, &send_info->id); + + if ( ring_info ) + { + ring_remove_info(dst_d, ring_info); + dst_d->argo->ring_count--; + } + else + ASSERT_UNREACHABLE(); + } + else + ASSERT_UNREACHABLE(); + + if ( dst_d ) + put_domain(dst_d); + + list_del(&send_info->node); + xfree(send_info); + } + } +} + long do_argo_op(unsigned int cmd, XEN_GUEST_HANDLE_PARAM(void) arg1, XEN_GUEST_HANDLE_PARAM(void) arg2, unsigned long raw_arg3, unsigned long raw_arg4) { - return -ENOSYS; + long rc; + unsigned int arg3 = raw_arg3, arg4 = raw_arg4; + + argo_dprintk("->do_argo_op(%u,%p,%p,%lu,0x%lx)\n", cmd, + (void *)arg1.p, (void *)arg2.p, raw_arg3, raw_arg4); + + /* Reject numeric hypercall args outside 32-bit range */ + if ( (arg3 != raw_arg3) || (arg4 != raw_arg4) ) + return -EINVAL; + + if ( unlikely(!opt_argo) ) + return -EOPNOTSUPP; + + switch ( cmd ) + { + default: + rc = -EOPNOTSUPP; + break; + } + + argo_dprintk("<-do_argo_op(%u)=%ld\n", cmd, rc); + + return rc; } #ifdef CONFIG_COMPAT @@ -42,6 +572,96 @@ compat_argo_op(unsigned int cmd, XEN_GUEST_HANDLE_PARAM(void) arg1, XEN_GUEST_HANDLE_PARAM(void) arg2, unsigned long arg3, unsigned long arg4) { - return -ENOSYS; + /* Forward all ops to the native handler */ + return do_argo_op(cmd, arg1, arg2, arg3, arg4); } #endif + +static void +argo_domain_init(struct argo_domain *argo) +{ + unsigned int i; + + rwlock_init(&argo->rings_L2_rwlock); + spin_lock_init(&argo->send_L2_lock); + spin_lock_init(&argo->wildcard_L2_lock); + + for ( i = 0; i < ARGO_HASHTABLE_SIZE; ++i ) + { + INIT_LIST_HEAD(&argo->ring_hash[i]); + INIT_LIST_HEAD(&argo->send_hash[i]); + } + INIT_LIST_HEAD(&argo->wildcard_pend_list); +} + +int +argo_init(struct domain *d) +{ + struct argo_domain *argo; + + if ( !opt_argo ) + { + argo_dprintk("argo disabled, domid: %u\n", d->domain_id); + return 0; + } + + argo_dprintk("init: domid: %u\n", d->domain_id); + + argo = xzalloc(struct argo_domain); + if ( !argo ) + return -ENOMEM; + + argo_domain_init(argo); + + write_lock(&L1_global_argo_rwlock); + + d->argo = argo; + + write_unlock(&L1_global_argo_rwlock); + + return 0; +} + +void +argo_destroy(struct domain *d) +{ + BUG_ON(!d->is_dying); + + write_lock(&L1_global_argo_rwlock); + + argo_dprintk("destroy: domid %u d->argo=%p\n", d->domain_id, d->argo); + + if ( d->argo ) + { + domain_rings_remove_all(d); + partner_rings_remove(d); + wildcard_rings_pending_remove(d); + XFREE(d->argo); + } + + write_unlock(&L1_global_argo_rwlock); +} + +void +argo_soft_reset(struct domain *d) +{ + write_lock(&L1_global_argo_rwlock); + + argo_dprintk("soft reset d=%u d->argo=%p\n", d->domain_id, d->argo); + + if ( d->argo ) + { + domain_rings_remove_all(d); + partner_rings_remove(d); + wildcard_rings_pending_remove(d); + + /* + * Since opt_argo cannot change at runtime, if d->argo is true then + * opt_argo must be true, and we can assume that init is allowed to + * proceed again here. + */ + argo_domain_init(d->argo); + } + + write_unlock(&L1_global_argo_rwlock); +} diff --git a/xen/common/domain.c b/xen/common/domain.c index c623daec56..7470cd916a 100644 --- a/xen/common/domain.c +++ b/xen/common/domain.c @@ -32,6 +32,7 @@ #include #include #include +#include #include #include #include @@ -277,6 +278,8 @@ static void _domain_destroy(struct domain *d) xfree(d->pbuf); + argo_destroy(d); + rangeset_domain_destroy(d); free_cpumask_var(d->dirty_cpumask); @@ -445,6 +448,9 @@ struct domain *domain_create(domid_t domid, goto fail; init_status |= INIT_gnttab; + if ( (err = argo_init(d)) != 0 ) + goto fail; + err = -ENOMEM; d->pbuf = xzalloc_array(char, DOMAIN_PBUF_SIZE); @@ -717,6 +723,7 @@ int domain_kill(struct domain *d) if ( d->is_dying != DOMDYING_alive ) return domain_kill(d); d->is_dying = DOMDYING_dying; + argo_destroy(d); evtchn_destroy(d); gnttab_release_mappings(d); tmem_destroy(d->tmem_client); @@ -1175,6 +1182,8 @@ int domain_soft_reset(struct domain *d) grant_table_warn_active_grants(d); + argo_soft_reset(d); + for_each_vcpu ( d, v ) { set_xen_guest_handle(runstate_guest(v), NULL); diff --git a/xen/include/Makefile b/xen/include/Makefile index f7895e4d4e..3d14532dbd 100644 --- a/xen/include/Makefile +++ b/xen/include/Makefile @@ -5,6 +5,7 @@ ifneq ($(CONFIG_COMPAT),) compat-arch-$(CONFIG_X86) := x86_32 headers-y := \ + compat/argo.h \ compat/callback.h \ compat/elfnote.h \ compat/event_channel.h \ diff --git a/xen/include/public/argo.h b/xen/include/public/argo.h new file mode 100644 index 0000000000..530bb82c62 --- /dev/null +++ b/xen/include/public/argo.h @@ -0,0 +1,64 @@ +/****************************************************************************** + * Argo : Hypervisor-Mediated data eXchange + * + * Derived from v4v, the version 2 of v2v. + * + * Copyright (c) 2010, Citrix Systems + * Copyright (c) 2018-2019, BAE Systems + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * + */ + +#ifndef __XEN_PUBLIC_ARGO_H__ +#define __XEN_PUBLIC_ARGO_H__ + +#include "xen.h" + +#define XEN_ARGO_DOMID_ANY DOMID_INVALID + +/* Fixed-width type for "argo port" number. Nothing to do with evtchns. */ +typedef uint32_t xen_argo_port_t; + +typedef struct xen_argo_addr +{ + xen_argo_port_t aport; + domid_t domain_id; + uint16_t pad; +} xen_argo_addr_t; + +typedef struct xen_argo_ring +{ + /* Guests should use atomic operations to access rx_ptr */ + uint32_t rx_ptr; + /* Guests should use atomic operations to access tx_ptr */ + uint32_t tx_ptr; + /* + * Header space reserved for later use. Align the start of the ring to a + * multiple of the message slot size. + */ + uint8_t reserved[56]; +#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L + uint8_t ring[]; +#elif defined(__GNUC__) + uint8_t ring[0]; +#endif +} xen_argo_ring_t; + +#endif diff --git a/xen/include/xen/argo.h b/xen/include/xen/argo.h new file mode 100644 index 0000000000..2ba7e5c0c0 --- /dev/null +++ b/xen/include/xen/argo.h @@ -0,0 +1,44 @@ +/****************************************************************************** + * Argo : Hypervisor-Mediated data eXchange + * + * Copyright (c) 2018, BAE Systems + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef __XEN_ARGO_H__ +#define __XEN_ARGO_H__ + +#include + +#ifdef CONFIG_ARGO + +int argo_init(struct domain *d); +void argo_destroy(struct domain *d); +void argo_soft_reset(struct domain *d); + +#else /* !CONFIG_ARGO */ + +static inline int argo_init(struct domain *d) +{ + return 0; +} + +static inline void argo_destroy(struct domain *d) +{ +} + +static inline void argo_soft_reset(struct domain *d) +{ +} + +#endif + +#endif diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h index 86f15b11e0..d633e1da70 100644 --- a/xen/include/xen/sched.h +++ b/xen/include/xen/sched.h @@ -491,6 +491,11 @@ struct domain unsigned int guest_request_enabled : 1; unsigned int guest_request_sync : 1; } monitor; + +#ifdef CONFIG_ARGO + /* Argo interdomain communication support */ + struct argo_domain *argo; +#endif }; /* Protect updates/reads (resp.) of domain_list and domain_hash. */ diff --git a/xen/include/xlat.lst b/xen/include/xlat.lst index 527332054a..16601d947f 100644 --- a/xen/include/xlat.lst +++ b/xen/include/xlat.lst @@ -30,6 +30,8 @@ ? mc_notifydomain arch-x86/xen-mca.h ! mc_physcpuinfo arch-x86/xen-mca.h ? page_offline_action arch-x86/xen-mca.h +? argo_addr argo.h +? argo_ring argo.h ? evtchn_alloc_unbound event_channel.h ? evtchn_bind_interdomain event_channel.h ? evtchn_bind_ipi event_channel.h -- generated by git-patchbot for /home/xen/git/xen.git#staging --===============8545239168114199136== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============8545239168114199136==-- From xen-changelog-bounces@lists.xenproject.org Thu Feb 07 13:33:49 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 07 Feb 2019 13:33:49 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjoL-00041C-Oj; 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Thu, 07 Feb 2019 13:34:11 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjog-00043M-2e for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:34:10 +0000 X-Inumbo-ID: 0a8b338a-2add-11e9-b373-fb78f3711eaa Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 0a8b338a-2add-11e9-b373-fb78f3711eaa; Thu, 07 Feb 2019 13:34:06 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjoc-0007fo-AR for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:34:06 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grjoc-0002uw-7s for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:34:06 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 07 Feb 2019 13:34:06 +0000 Subject: [Xen-changelog] [xen staging] argo: implement the register op X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============3129024085891207800==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============3129024085891207800== Content-Type: text/plain commit 4048189d0125ed6033300a7951feb8a430504bf5 Author: Christopher Clark AuthorDate: Wed Feb 6 09:55:00 2019 +0100 Commit: Jan Beulich CommitDate: Thu Feb 7 14:22:52 2019 +0100 argo: implement the register op The register op is used by a domain to register a region of memory for receiving messages from either a specified other domain, or, if specifying a wildcard, any domain. This operation creates a mapping within Xen's private address space that will remain resident for the lifetime of the ring. In subsequent commits, the hypervisor will use this mapping to copy data from a sending domain into this registered ring, making it accessible to the domain that registered the ring to receive data. Wildcard any-sender rings are default disabled and registration will be refused with EPERM unless they have been specifically enabled with the new mac-permissive flag that is added to the argo boot option here. The reason why the default for wildcard rings is 'deny' is that there is currently no means to protect the ring from DoS by a noisy domain spamming the ring, affecting other domains ability to send to it. This will be addressed with XSM policy controls in subsequent work. Since denying access to any-sender rings is a significant functional constraint, the new option "mac-permissive" for the argo bootparam enables overriding this. eg: "argo=1,mac-permissive=1" The p2m type of the memory supplied by the guest for the ring must be p2m_ram_rw and the memory will be pinned as PGT_writable_page while the ring is registered. This hypercall op and its interface currently only supports 4K-sized pages. Signed-off-by: Christopher Clark Tested-by: Chris Patterson Reviewed-by: Roger Pau Monné Release-acked-by: Juergen Gross --- docs/misc/xen-command-line.pandoc | 9 +- xen/common/argo.c | 473 ++++++++++++++++++++++++++++++++++++++ xen/include/public/argo.h | 69 ++++++ xen/include/xlat.lst | 2 + 4 files changed, 552 insertions(+), 1 deletion(-) diff --git a/docs/misc/xen-command-line.pandoc b/docs/misc/xen-command-line.pandoc index 605c544bd3..c8d1ced018 100644 --- a/docs/misc/xen-command-line.pandoc +++ b/docs/misc/xen-command-line.pandoc @@ -183,7 +183,7 @@ in combination with cpuidle. This option is only expected to be useful for developers wishing Xen to fall back to older timing methods on newer hardware. ### argo - = List of [ ] + = List of [ , mac-permissive= ] Controls for the Argo hypervisor-mediated interdomain communication service. @@ -195,6 +195,13 @@ point of authority. Guests may register memory rings to recieve messages, query the status of other domains, and send messages by hypercall, all subject to appropriate auditing by Xen. Argo is disabled by default. +* The `mac-permissive` boolean controls whether wildcard receive rings may be + registered (`mac-permissive=1`) or may not be registered + (`mac-permissive=0`). + + This option is disabled by default, to protect domains from a DoS by a + buggy or malicious other domain spamming the ring. + ### asid (x86) > `= ` diff --git a/xen/common/argo.c b/xen/common/argo.c index f1626ca520..814dd0cf1c 100644 --- a/xen/common/argo.c +++ b/xen/common/argo.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include #include @@ -31,13 +32,30 @@ #ifdef CONFIG_COMPAT #include CHECK_argo_addr; +#undef CHECK_argo_addr +#define CHECK_argo_addr struct xen_argo_addr +CHECK_argo_register_ring; CHECK_argo_ring; +CHECK_argo_ring_message_header; #endif +#define MAX_RINGS_PER_DOMAIN 128U + +/* All messages on the ring are padded to a multiple of the slot size. */ +#define ROUNDUP_MESSAGE(a) ROUNDUP((a), XEN_ARGO_MSG_SLOT_SIZE) + +/* Number of PAGEs needed to hold a ring of a given size in bytes */ +#define NPAGES_RING(ring_len) \ + (ROUNDUP((ROUNDUP_MESSAGE(ring_len) + sizeof(xen_argo_ring_t)), PAGE_SIZE) \ + >> PAGE_SHIFT) + DEFINE_XEN_GUEST_HANDLE(xen_argo_addr_t); +DEFINE_XEN_GUEST_HANDLE(xen_argo_gfn_t); +DEFINE_XEN_GUEST_HANDLE(xen_argo_register_ring_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_ring_t); static bool __read_mostly opt_argo; +static bool __read_mostly opt_argo_mac_permissive; static int __init parse_argo(const char *s) { @@ -51,6 +69,8 @@ static int __init parse_argo(const char *s) if ( (val = parse_bool(s, ss)) >= 0 ) opt_argo = val; + else if ( (val = parse_boolean("mac-permissive", s, ss)) >= 0 ) + opt_argo_mac_permissive = val; else rc = -EINVAL; @@ -366,6 +386,74 @@ ring_unmap(const struct domain *d, struct argo_ring_info *ring_info) } } +static int +ring_map_page(const struct domain *d, struct argo_ring_info *ring_info, + unsigned int i, void **out_ptr) +{ + ASSERT(LOCKING_L3(d, ring_info)); + + /* + * FIXME: Investigate using vmap to create a single contiguous virtual + * address space mapping of the ring instead of using the array of single + * page mappings. + * Affects logic in memcpy_to_guest_ring, the mfn_mapping array data + * structure, and places where ring mappings are added or removed. + */ + + if ( i >= ring_info->nmfns ) + { + gprintk(XENLOG_ERR, + "argo: ring (vm%u:%x vm%u) %p attempted to map page %u of %u\n", + ring_info->id.domain_id, ring_info->id.aport, + ring_info->id.partner_id, ring_info, i, ring_info->nmfns); + return -ENOMEM; + } + i = array_index_nospec(i, ring_info->nmfns); + + if ( !ring_info->mfns || !ring_info->mfn_mapping ) + { + ASSERT_UNREACHABLE(); + ring_info->len = 0; + return -ENOMEM; + } + + if ( !ring_info->mfn_mapping[i] ) + { + ring_info->mfn_mapping[i] = map_domain_page_global(ring_info->mfns[i]); + if ( !ring_info->mfn_mapping[i] ) + { + gprintk(XENLOG_ERR, "argo: ring (vm%u:%x vm%u) %p attempted to map " + "page %u of %u\n", + ring_info->id.domain_id, ring_info->id.aport, + ring_info->id.partner_id, ring_info, i, ring_info->nmfns); + return -ENOMEM; + } + argo_dprintk("mapping page %"PRI_mfn" to %p\n", + mfn_x(ring_info->mfns[i]), ring_info->mfn_mapping[i]); + } + + if ( out_ptr ) + *out_ptr = ring_info->mfn_mapping[i]; + + return 0; +} + +static void +update_tx_ptr(const struct domain *d, struct argo_ring_info *ring_info, + uint32_t tx_ptr) +{ + xen_argo_ring_t *ringp; + + ASSERT(LOCKING_L3(d, ring_info)); + ASSERT(ring_info->mfn_mapping[0]); + + ring_info->tx_ptr = tx_ptr; + ringp = ring_info->mfn_mapping[0]; + + write_atomic(&ringp->tx_ptr, tx_ptr); + smp_wmb(); +} + static void wildcard_pending_list_remove(domid_t domain_id, struct pending_ent *ent) { @@ -536,11 +624,369 @@ partner_rings_remove(struct domain *src_d) } } +static int +find_ring_mfn(struct domain *d, gfn_t gfn, mfn_t *mfn) +{ + struct page_info *page; + p2m_type_t p2mt; + int ret; + + ret = check_get_page_from_gfn(d, gfn, false, &p2mt, &page); + if ( unlikely(ret) ) + return ret; + + *mfn = page_to_mfn(page); + if ( !mfn_valid(*mfn) ) + ret = -EINVAL; +#ifdef CONFIG_X86 + else if ( p2mt == p2m_ram_logdirty ) + ret = -EAGAIN; +#endif + else if ( (p2mt != p2m_ram_rw) || + !get_page_and_type(page, d, PGT_writable_page) ) + ret = -EINVAL; + + put_page(page); + + return ret; +} + +static int +find_ring_mfns(struct domain *d, struct argo_ring_info *ring_info, + const unsigned int npage, + XEN_GUEST_HANDLE_PARAM(xen_argo_gfn_t) gfn_hnd, + const unsigned int len) +{ + unsigned int i; + int ret = 0; + mfn_t *mfns; + void **mfn_mapping; + + ASSERT(LOCKING_Write_rings_L2(d)); + + if ( ring_info->mfns ) + { + /* Ring already existed: drop the previous mapping. */ + gprintk(XENLOG_INFO, "argo: vm%u re-register existing ring " + "(vm%u:%x vm%u) clears mapping\n", + d->domain_id, ring_info->id.domain_id, + ring_info->id.aport, ring_info->id.partner_id); + + ring_remove_mfns(d, ring_info); + ASSERT(!ring_info->mfns); + } + + mfns = xmalloc_array(mfn_t, npage); + if ( !mfns ) + return -ENOMEM; + + for ( i = 0; i < npage; i++ ) + mfns[i] = INVALID_MFN; + + mfn_mapping = xzalloc_array(void *, npage); + if ( !mfn_mapping ) + { + xfree(mfns); + return -ENOMEM; + } + + ring_info->mfns = mfns; + ring_info->mfn_mapping = mfn_mapping; + + for ( i = 0; i < npage; i++ ) + { + mfn_t mfn; + xen_argo_gfn_t argo_gfn; + + ret = __copy_from_guest_offset(&argo_gfn, gfn_hnd, i, 1) ? -EFAULT : 0; + if ( ret ) + break; + + ret = find_ring_mfn(d, _gfn(argo_gfn), &mfn); + if ( ret ) + { + gprintk(XENLOG_ERR, "argo: vm%u: invalid gfn %"PRI_gfn" " + "r:(vm%u:%x vm%u) %p %u/%u\n", + d->domain_id, gfn_x(_gfn(argo_gfn)), + ring_info->id.domain_id, ring_info->id.aport, + ring_info->id.partner_id, ring_info, i, npage); + break; + } + + ring_info->mfns[i] = mfn; + + argo_dprintk("%u: %"PRI_gfn" -> %"PRI_mfn"\n", + i, gfn_x(_gfn(argo_gfn)), mfn_x(ring_info->mfns[i])); + } + + ring_info->nmfns = i; + + if ( ret ) + ring_remove_mfns(d, ring_info); + else + { + ASSERT(ring_info->nmfns == NPAGES_RING(len)); + + gprintk(XENLOG_DEBUG, "argo: vm%u ring (vm%u:%x vm%u) %p " + "mfn_mapping %p len %u nmfns %u\n", + d->domain_id, ring_info->id.domain_id, + ring_info->id.aport, ring_info->id.partner_id, ring_info, + ring_info->mfn_mapping, ring_info->len, ring_info->nmfns); + } + + return ret; +} + +static long +register_ring(struct domain *currd, + XEN_GUEST_HANDLE_PARAM(xen_argo_register_ring_t) reg_hnd, + XEN_GUEST_HANDLE_PARAM(xen_argo_gfn_t) gfn_hnd, + unsigned int npage, unsigned int flags) +{ + xen_argo_register_ring_t reg; + struct argo_ring_id ring_id; + void *map_ringp; + xen_argo_ring_t *ringp; + struct argo_ring_info *ring_info, *new_ring_info = NULL; + struct argo_send_info *send_info = NULL; + struct domain *dst_d = NULL; + int ret = 0; + unsigned int private_tx_ptr; + + ASSERT(currd == current->domain); + + /* flags: reserve currently-undefined bits, require zero. */ + if ( unlikely(flags & ~XEN_ARGO_REGISTER_FLAG_MASK) ) + return -EINVAL; + + if ( copy_from_guest(®, reg_hnd, 1) ) + return -EFAULT; + + /* + * A ring must be large enough to transmit messages, so requires space for: + * * 1 message header, plus + * * 1 payload slot (payload is always rounded to a multiple of 16 bytes) + * for the message payload to be written into, plus + * * 1 more slot, so that the ring cannot be filled to capacity with a + * single minimum-size message -- see the logic in ringbuf_insert -- + * allowing for this ensures that there can be space remaining when a + * message is present. + * The above determines the minimum acceptable ring size. + */ + if ( (reg.len < (sizeof(struct xen_argo_ring_message_header) + + ROUNDUP_MESSAGE(1) + ROUNDUP_MESSAGE(1))) || + (reg.len > XEN_ARGO_MAX_RING_SIZE) || + (reg.len != ROUNDUP_MESSAGE(reg.len)) || + (NPAGES_RING(reg.len) != npage) || + (reg.pad != 0) ) + return -EINVAL; + + ring_id.partner_id = reg.partner_id; + ring_id.aport = reg.aport; + ring_id.domain_id = currd->domain_id; + + if ( reg.partner_id == XEN_ARGO_DOMID_ANY ) + { + if ( !opt_argo_mac_permissive ) + return -EPERM; + } + else + { + dst_d = get_domain_by_id(reg.partner_id); + if ( !dst_d ) + { + argo_dprintk("!dst_d, ESRCH\n"); + return -ESRCH; + } + + send_info = xzalloc(struct argo_send_info); + if ( !send_info ) + { + ret = -ENOMEM; + goto out; + } + send_info->id = ring_id; + } + + /* + * Common case is that the ring doesn't already exist, so do the alloc here + * before picking up any locks. + */ + new_ring_info = xzalloc(struct argo_ring_info); + if ( !new_ring_info ) + { + ret = -ENOMEM; + goto out; + } + + read_lock(&L1_global_argo_rwlock); + + if ( !currd->argo ) + { + ret = -ENODEV; + goto out_unlock; + } + + if ( dst_d && !dst_d->argo ) + { + argo_dprintk("!dst_d->argo, ECONNREFUSED\n"); + ret = -ECONNREFUSED; + goto out_unlock; + } + + write_lock(&currd->argo->rings_L2_rwlock); + + if ( currd->argo->ring_count >= MAX_RINGS_PER_DOMAIN ) + { + ret = -ENOSPC; + goto out_unlock2; + } + + ring_info = find_ring_info(currd, &ring_id); + if ( !ring_info ) + { + ring_info = new_ring_info; + new_ring_info = NULL; + + spin_lock_init(&ring_info->L3_lock); + + ring_info->id = ring_id; + INIT_LIST_HEAD(&ring_info->pending); + + list_add(&ring_info->node, + &currd->argo->ring_hash[hash_index(&ring_info->id)]); + + gprintk(XENLOG_DEBUG, "argo: vm%u registering ring (vm%u:%x vm%u)\n", + currd->domain_id, ring_id.domain_id, ring_id.aport, + ring_id.partner_id); + } + else if ( ring_info->len ) + { + /* + * If the caller specified that the ring must not already exist, + * fail at attempt to add a completed ring which already exists. + */ + if ( flags & XEN_ARGO_REGISTER_FLAG_FAIL_EXIST ) + { + gprintk(XENLOG_ERR, "argo: vm%u disallowed reregistration of " + "existing ring (vm%u:%x vm%u)\n", + currd->domain_id, ring_id.domain_id, ring_id.aport, + ring_id.partner_id); + ret = -EEXIST; + goto out_unlock2; + } + + if ( ring_info->len != reg.len ) + { + /* + * Change of ring size could result in entries on the pending + * notifications list that will never trigger. + * Simple blunt solution: disallow ring resize for now. + * TODO: investigate enabling ring resize. + */ + gprintk(XENLOG_ERR, "argo: vm%u attempted to change ring size " + "(vm%u:%x vm%u)\n", + currd->domain_id, ring_id.domain_id, ring_id.aport, + ring_id.partner_id); + /* + * Could return EINVAL here, but if the ring didn't already + * exist then the arguments would have been valid, so: EEXIST. + */ + ret = -EEXIST; + goto out_unlock2; + } + + gprintk(XENLOG_DEBUG, + "argo: vm%u re-registering existing ring (vm%u:%x vm%u)\n", + currd->domain_id, ring_id.domain_id, ring_id.aport, + ring_id.partner_id); + } + + ret = find_ring_mfns(currd, ring_info, npage, gfn_hnd, reg.len); + if ( ret ) + { + gprintk(XENLOG_ERR, + "argo: vm%u failed to find ring mfns (vm%u:%x vm%u)\n", + currd->domain_id, ring_id.domain_id, ring_id.aport, + ring_id.partner_id); + + ring_remove_info(currd, ring_info); + goto out_unlock2; + } + + /* + * The first page of the memory supplied for the ring has the xen_argo_ring + * structure at its head, which is where the ring indexes reside. + */ + ret = ring_map_page(currd, ring_info, 0, &map_ringp); + if ( ret ) + { + gprintk(XENLOG_ERR, + "argo: vm%u failed to map ring mfn 0 (vm%u:%x vm%u)\n", + currd->domain_id, ring_id.domain_id, ring_id.aport, + ring_id.partner_id); + + ring_remove_info(currd, ring_info); + goto out_unlock2; + } + ringp = map_ringp; + + private_tx_ptr = read_atomic(&ringp->tx_ptr); + + if ( (private_tx_ptr >= reg.len) || + (ROUNDUP_MESSAGE(private_tx_ptr) != private_tx_ptr) ) + { + /* + * Since the ring is a mess, attempt to flush the contents of it + * here by setting the tx_ptr to the next aligned message slot past + * the latest rx_ptr we have observed. Handle ring wrap correctly. + */ + private_tx_ptr = ROUNDUP_MESSAGE(read_atomic(&ringp->rx_ptr)); + + if ( private_tx_ptr >= reg.len ) + private_tx_ptr = 0; + + update_tx_ptr(currd, ring_info, private_tx_ptr); + } + + ring_info->tx_ptr = private_tx_ptr; + ring_info->len = reg.len; + currd->argo->ring_count++; + + if ( send_info ) + { + spin_lock(&dst_d->argo->send_L2_lock); + + list_add(&send_info->node, + &dst_d->argo->send_hash[hash_index(&send_info->id)]); + + spin_unlock(&dst_d->argo->send_L2_lock); + } + + out_unlock2: + write_unlock(&currd->argo->rings_L2_rwlock); + + out_unlock: + read_unlock(&L1_global_argo_rwlock); + + out: + if ( dst_d ) + put_domain(dst_d); + + if ( ret ) + xfree(send_info); + + xfree(new_ring_info); + + return ret; +} + long do_argo_op(unsigned int cmd, XEN_GUEST_HANDLE_PARAM(void) arg1, XEN_GUEST_HANDLE_PARAM(void) arg2, unsigned long raw_arg3, unsigned long raw_arg4) { + struct domain *currd = current->domain; long rc; unsigned int arg3 = raw_arg3, arg4 = raw_arg4; @@ -556,6 +1002,33 @@ do_argo_op(unsigned int cmd, XEN_GUEST_HANDLE_PARAM(void) arg1, switch ( cmd ) { + case XEN_ARGO_OP_register_ring: + { + XEN_GUEST_HANDLE_PARAM(xen_argo_register_ring_t) reg_hnd = + guest_handle_cast(arg1, xen_argo_register_ring_t); + XEN_GUEST_HANDLE_PARAM(xen_argo_gfn_t) gfn_hnd = + guest_handle_cast(arg2, xen_argo_gfn_t); + /* arg3: npage, arg4: flags */ + + BUILD_BUG_ON(!IS_ALIGNED(XEN_ARGO_MAX_RING_SIZE, PAGE_SIZE)); + + if ( unlikely(arg3 > (XEN_ARGO_MAX_RING_SIZE >> PAGE_SHIFT)) ) + { + rc = -EINVAL; + break; + } + + /* Check array to allow use of the faster __copy operations later */ + if ( unlikely(!guest_handle_okay(gfn_hnd, arg3)) ) + { + rc = -EFAULT; + break; + } + + rc = register_ring(currd, reg_hnd, gfn_hnd, arg3, arg4); + break; + } + default: rc = -EOPNOTSUPP; break; diff --git a/xen/include/public/argo.h b/xen/include/public/argo.h index 530bb82c62..8b763e7159 100644 --- a/xen/include/public/argo.h +++ b/xen/include/public/argo.h @@ -33,9 +33,15 @@ #define XEN_ARGO_DOMID_ANY DOMID_INVALID +/* The maximum size of an Argo ring is defined to be: 16MB (0x1000000 bytes). */ +#define XEN_ARGO_MAX_RING_SIZE (0x1000000ULL) + /* Fixed-width type for "argo port" number. Nothing to do with evtchns. */ typedef uint32_t xen_argo_port_t; +/* gfn type: 64-bit fixed-width on all architectures */ +typedef uint64_t xen_argo_gfn_t; + typedef struct xen_argo_addr { xen_argo_port_t aport; @@ -61,4 +67,67 @@ typedef struct xen_argo_ring #endif } xen_argo_ring_t; +typedef struct xen_argo_register_ring +{ + xen_argo_port_t aport; + domid_t partner_id; + uint16_t pad; + uint32_t len; +} xen_argo_register_ring_t; + +/* Messages on the ring are padded to a multiple of this size. */ +#define XEN_ARGO_MSG_SLOT_SIZE 0x10 + +struct xen_argo_ring_message_header +{ + uint32_t len; + struct xen_argo_addr source; + uint32_t message_type; +#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L + uint8_t data[]; +#elif defined(__GNUC__) + uint8_t data[0]; +#endif +}; + +/* + * Hypercall operations + */ + +/* + * XEN_ARGO_OP_register_ring + * + * Register a ring using the guest-supplied memory pages. + * Also used to reregister an existing ring (eg. after resume from hibernate). + * + * The first argument struct indicates the port number for the ring to register + * and the partner domain, if any, that is to be allowed to send to the ring. + * A wildcard (XEN_ARGO_DOMID_ANY) may be supplied instead of a partner domid, + * and if the hypervisor has wildcard sender rings enabled, this will allow + * any domain (XSM notwithstanding) to send to the ring. + * + * The second argument is an array of guest frame numbers and the third argument + * indicates the size of the array. This operation only supports 4K-sized pages. + * + * arg1: XEN_GUEST_HANDLE(xen_argo_register_ring_t) + * arg2: XEN_GUEST_HANDLE(xen_argo_gfn_t) + * arg3: unsigned long npages + * arg4: unsigned long flags (32-bit value) + */ +#define XEN_ARGO_OP_register_ring 1 + +/* Register op flags */ +/* + * Fail exist: + * If set, reject attempts to (re)register an existing established ring. + * If clear, reregistration occurs if the ring exists, with the new ring + * taking the place of the old, preserving tx_ptr if it remains valid. + */ +#define XEN_ARGO_REGISTER_FLAG_FAIL_EXIST 0x1 + +#ifdef __XEN__ +/* Mask for all defined flags. */ +#define XEN_ARGO_REGISTER_FLAG_MASK XEN_ARGO_REGISTER_FLAG_FAIL_EXIST +#endif + #endif diff --git a/xen/include/xlat.lst b/xen/include/xlat.lst index 16601d947f..349fbad38c 100644 --- a/xen/include/xlat.lst +++ b/xen/include/xlat.lst @@ -31,7 +31,9 @@ ! mc_physcpuinfo arch-x86/xen-mca.h ? page_offline_action arch-x86/xen-mca.h ? argo_addr argo.h +? argo_register_ring argo.h ? argo_ring argo.h +? argo_ring_message_header argo.h ? evtchn_alloc_unbound event_channel.h ? evtchn_bind_interdomain event_channel.h ? evtchn_bind_ipi event_channel.h -- generated by git-patchbot for /home/xen/git/xen.git#staging --===============3129024085891207800== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============3129024085891207800==-- From xen-changelog-bounces@lists.xenproject.org Thu Feb 07 13:34:19 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 07 Feb 2019 13:34:19 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjop-00044c-1R; Thu, 07 Feb 2019 13:34:19 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjoo-00044O-11 for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:34:18 +0000 X-Inumbo-ID: 10a1a392-2add-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 10a1a392-2add-11e9-bc90-bc764e045a96; Thu, 07 Feb 2019 13:34:16 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjom-0007g4-H0 for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:34:16 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grjom-0002vw-EI for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:34:16 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 07 Feb 2019 13:34:16 +0000 Subject: [Xen-changelog] [xen staging] argo: implement the unregister op X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============5274533790089361825==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============5274533790089361825== Content-Type: text/plain commit a00ee1ec8f732940eb76f83057095c585d253e04 Author: Christopher Clark AuthorDate: Wed Feb 6 10:04:00 2019 +0100 Commit: Jan Beulich CommitDate: Thu Feb 7 14:23:39 2019 +0100 argo: implement the unregister op Takes a single argument: a handle to the ring unregistration struct, which specifies the port and partner domain id or wildcard. The ring's entry is removed from the hashtable of registered rings; any entries for pending notifications are removed; and the ring is unmapped from Xen's address space. If the ring had been registered to communicate with a single specified domain (ie. a non-wildcard ring) then the partner domain state is removed from the partner domain's argo send_info hash table. Signed-off-by: Christopher Clark Reviewed-by: Roger Pau Monné Tested-by: Chris Patterson Release-acked-by: Juergen Gross --- xen/common/argo.c | 126 ++++++++++++++++++++++++++++++++++++++++++++++ xen/include/public/argo.h | 19 +++++++ xen/include/xlat.lst | 1 + 3 files changed, 146 insertions(+) diff --git a/xen/common/argo.c b/xen/common/argo.c index 814dd0cf1c..f3e468dffd 100644 --- a/xen/common/argo.c +++ b/xen/common/argo.c @@ -37,6 +37,7 @@ CHECK_argo_addr; CHECK_argo_register_ring; CHECK_argo_ring; CHECK_argo_ring_message_header; +CHECK_argo_unregister_ring; #endif #define MAX_RINGS_PER_DOMAIN 128U @@ -53,6 +54,7 @@ DEFINE_XEN_GUEST_HANDLE(xen_argo_addr_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_gfn_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_register_ring_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_ring_t); +DEFINE_XEN_GUEST_HANDLE(xen_argo_unregister_ring_t); static bool __read_mostly opt_argo; static bool __read_mostly opt_argo_mac_permissive; @@ -360,6 +362,36 @@ find_ring_info(const struct domain *d, const struct argo_ring_id *id) return NULL; } +static struct argo_send_info * +find_send_info(const struct domain *d, const struct argo_ring_id *id) +{ + struct argo_send_info *send_info; + const struct list_head *bucket; + + ASSERT(LOCKING_send_L2(d)); + + /* List is not modified here. Search and return the match if found. */ + bucket = &d->argo->send_hash[hash_index(id)]; + + list_for_each_entry(send_info, bucket, node) + { + const struct argo_ring_id *cmpid = &send_info->id; + + if ( cmpid->aport == id->aport && + cmpid->domain_id == id->domain_id && + cmpid->partner_id == id->partner_id ) + { + argo_dprintk("found send_info for ring(%u:%x %u)\n", + id->domain_id, id->aport, id->partner_id); + return send_info; + } + } + argo_dprintk("no send_info for ring(%u:%x %u)\n", + id->domain_id, id->aport, id->partner_id); + + return NULL; +} + static void ring_unmap(const struct domain *d, struct argo_ring_info *ring_info) { @@ -738,6 +770,85 @@ find_ring_mfns(struct domain *d, struct argo_ring_info *ring_info, } static long +unregister_ring(struct domain *currd, + XEN_GUEST_HANDLE_PARAM(xen_argo_unregister_ring_t) unreg_hnd) +{ + xen_argo_unregister_ring_t unreg; + struct argo_ring_id ring_id; + struct argo_ring_info *ring_info = NULL; + struct argo_send_info *send_info = NULL; + struct domain *dst_d = NULL; + + ASSERT(currd == current->domain); + + if ( copy_from_guest(&unreg, unreg_hnd, 1) ) + return -EFAULT; + + if ( unreg.pad ) + return -EINVAL; + + ring_id.partner_id = unreg.partner_id; + ring_id.aport = unreg.aport; + ring_id.domain_id = currd->domain_id; + + read_lock(&L1_global_argo_rwlock); + + if ( unlikely(!currd->argo) ) + { + read_unlock(&L1_global_argo_rwlock); + return -ENODEV; + } + + write_lock(&currd->argo->rings_L2_rwlock); + + ring_info = find_ring_info(currd, &ring_id); + if ( !ring_info ) + goto out; + + ring_remove_info(currd, ring_info); + currd->argo->ring_count--; + + if ( ring_id.partner_id == XEN_ARGO_DOMID_ANY ) + goto out; + + dst_d = get_domain_by_id(ring_id.partner_id); + if ( !dst_d || !dst_d->argo ) + { + ASSERT_UNREACHABLE(); + goto out; + } + + spin_lock(&dst_d->argo->send_L2_lock); + + send_info = find_send_info(dst_d, &ring_id); + if ( send_info ) + list_del(&send_info->node); + else + ASSERT_UNREACHABLE(); + + spin_unlock(&dst_d->argo->send_L2_lock); + + out: + write_unlock(&currd->argo->rings_L2_rwlock); + + read_unlock(&L1_global_argo_rwlock); + + if ( dst_d ) + put_domain(dst_d); + + xfree(send_info); + + if ( !ring_info ) + { + argo_dprintk("unregister_ring: no ring_info found for ring(%u:%x %u)\n", + ring_id.domain_id, ring_id.aport, ring_id.partner_id); + return -ENOENT; + } + + return 0; +} + +static long register_ring(struct domain *currd, XEN_GUEST_HANDLE_PARAM(xen_argo_register_ring_t) reg_hnd, XEN_GUEST_HANDLE_PARAM(xen_argo_gfn_t) gfn_hnd, @@ -1029,6 +1140,21 @@ do_argo_op(unsigned int cmd, XEN_GUEST_HANDLE_PARAM(void) arg1, break; } + case XEN_ARGO_OP_unregister_ring: + { + XEN_GUEST_HANDLE_PARAM(xen_argo_unregister_ring_t) unreg_hnd = + guest_handle_cast(arg1, xen_argo_unregister_ring_t); + + if ( unlikely((!guest_handle_is_null(arg2)) || arg3 || arg4) ) + { + rc = -EINVAL; + break; + } + + rc = unregister_ring(currd, unreg_hnd); + break; + } + default: rc = -EOPNOTSUPP; break; diff --git a/xen/include/public/argo.h b/xen/include/public/argo.h index 8b763e7159..29856df34a 100644 --- a/xen/include/public/argo.h +++ b/xen/include/public/argo.h @@ -75,6 +75,13 @@ typedef struct xen_argo_register_ring uint32_t len; } xen_argo_register_ring_t; +typedef struct xen_argo_unregister_ring +{ + xen_argo_port_t aport; + domid_t partner_id; + uint16_t pad; +} xen_argo_unregister_ring_t; + /* Messages on the ring are padded to a multiple of this size. */ #define XEN_ARGO_MSG_SLOT_SIZE 0x10 @@ -130,4 +137,16 @@ struct xen_argo_ring_message_header #define XEN_ARGO_REGISTER_FLAG_MASK XEN_ARGO_REGISTER_FLAG_FAIL_EXIST #endif +/* + * XEN_ARGO_OP_unregister_ring + * + * Unregister a previously-registered ring, ending communication. + * + * arg1: XEN_GUEST_HANDLE(xen_argo_unregister_ring_t) + * arg2: NULL + * arg3: 0 (ZERO) + * arg4: 0 (ZERO) + */ +#define XEN_ARGO_OP_unregister_ring 2 + #endif diff --git a/xen/include/xlat.lst b/xen/include/xlat.lst index 349fbad38c..ee7dffc7e8 100644 --- a/xen/include/xlat.lst +++ b/xen/include/xlat.lst @@ -34,6 +34,7 @@ ? argo_register_ring argo.h ? argo_ring argo.h ? argo_ring_message_header argo.h +? argo_unregister_ring argo.h ? evtchn_alloc_unbound event_channel.h ? evtchn_bind_interdomain event_channel.h ? evtchn_bind_ipi event_channel.h -- generated by git-patchbot for /home/xen/git/xen.git#staging --===============5274533790089361825== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============5274533790089361825==-- From xen-changelog-bounces@lists.xenproject.org Thu Feb 07 13:34:30 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 07 Feb 2019 13:34:30 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjp0-00045x-3P; Thu, 07 Feb 2019 13:34:30 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjoz-00045l-00 for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:34:29 +0000 X-Inumbo-ID: 16b55d48-2add-11e9-b8a4-abf750ea53d0 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 16b55d48-2add-11e9-b8a4-abf750ea53d0; Thu, 07 Feb 2019 13:34:27 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjow-0007gs-O1 for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:34:26 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grjow-0002wq-LI for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:34:26 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 07 Feb 2019 13:34:26 +0000 Subject: [Xen-changelog] [xen staging] argo: implement the sendv op; evtchn: expose send_guest_global_virq X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0331610627817586415==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============0331610627817586415== Content-Type: text/plain commit d5a390ca53600df97a2f3937f4c9a9106b2acfdd Author: Christopher Clark AuthorDate: Wed Feb 6 09:55:00 2019 +0100 Commit: Jan Beulich CommitDate: Thu Feb 7 14:23:52 2019 +0100 argo: implement the sendv op; evtchn: expose send_guest_global_virq sendv operation is invoked to perform a synchronous send of buffers contained in iovs to a remote domain's registered ring. It takes: * A destination address (domid, port) for the ring to send to. It performs a most-specific match lookup, to allow for wildcard. * A source address, used to inform the destination of where to reply. * The address of an array of iovs containing the data to send * .. and the length of that array of iovs * and a 32-bit message type, available to communicate message context data (eg. kernel-to-kernel, separate from the application data). If insufficient space exists in the destination ring, it will return -EAGAIN and Xen will notify the caller when sufficient space becomes available. Accesses to the ring indices are appropriately atomic. The rings are mapped into Xen's private address space to write as needed and the mappings are retained for later use. Notifications are sent to guests via VIRQ and send_guest_global_virq is exposed in the change to enable argo to call it. VIRQ_ARGO is claimed from the VIRQ previously reserved for this purpose (#11). The VIRQ notification method is used rather than sending events using evtchn functions directly because: * no current event channel type is an exact fit for the intended behaviour. ECS_IPI is closest, but it disallows migration to other VCPUs which is not necessarily a requirement for Argo. * at the point of argo_init, allocation of an event channel is complicated by none of the guest VCPUs being initialized yet and the event channel logic expects that a valid event channel has a present VCPU. * at the point of signalling a notification, the VIRQ logic is already defensive: if d->vcpu[0] is NULL, the notification is just silently dropped, whereas the evtchn_send logic is not so defensive: vcpu[0] must not be NULL, otherwise a null pointer dereference occurs. Using a VIRQ removes the need for the guest to query to determine which event channel notifications will be delivered on. This is also likely to simplify establishing future L0/L1 nested hypervisor argo communication. Signed-off-by: Christopher Clark Tested-by: Chris Patterson Reviewed-by: Roger Pau Monné Release-acked-by: Juergen Gross --- xen/common/argo.c | 694 ++++++++++++++++++++++++++++++++++++++++++++- xen/common/event_channel.c | 2 +- xen/include/public/argo.h | 48 ++++ xen/include/public/xen.h | 2 +- xen/include/xen/event.h | 7 + xen/include/xlat.lst | 2 + 6 files changed, 751 insertions(+), 4 deletions(-) diff --git a/xen/common/argo.c b/xen/common/argo.c index f3e468dffd..45d1090778 100644 --- a/xen/common/argo.c +++ b/xen/common/argo.c @@ -38,13 +38,19 @@ CHECK_argo_register_ring; CHECK_argo_ring; CHECK_argo_ring_message_header; CHECK_argo_unregister_ring; +CHECK_argo_send_addr; #endif #define MAX_RINGS_PER_DOMAIN 128U +#define MAX_PENDING_PER_RING 32U /* All messages on the ring are padded to a multiple of the slot size. */ #define ROUNDUP_MESSAGE(a) ROUNDUP((a), XEN_ARGO_MSG_SLOT_SIZE) +/* The maximum size of a message that may be sent on the largest Argo ring. */ +#define MAX_ARGO_MESSAGE_SIZE ((XEN_ARGO_MAX_RING_SIZE) - \ + (sizeof(struct xen_argo_ring_message_header)) - ROUNDUP_MESSAGE(1)) + /* Number of PAGEs needed to hold a ring of a given size in bytes */ #define NPAGES_RING(ring_len) \ (ROUNDUP((ROUNDUP_MESSAGE(ring_len) + sizeof(xen_argo_ring_t)), PAGE_SIZE) \ @@ -52,9 +58,14 @@ CHECK_argo_unregister_ring; DEFINE_XEN_GUEST_HANDLE(xen_argo_addr_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_gfn_t); +DEFINE_XEN_GUEST_HANDLE(xen_argo_iov_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_register_ring_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_ring_t); +DEFINE_XEN_GUEST_HANDLE(xen_argo_send_addr_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_unregister_ring_t); +#ifdef CONFIG_COMPAT +DEFINE_COMPAT_HANDLE(compat_argo_iov_t); +#endif static bool __read_mostly opt_argo; static bool __read_mostly opt_argo_mac_permissive; @@ -362,6 +373,28 @@ find_ring_info(const struct domain *d, const struct argo_ring_id *id) return NULL; } +static struct argo_ring_info * +find_ring_info_by_match(const struct domain *d, xen_argo_port_t aport, + domid_t partner_id) +{ + struct argo_ring_id id; + struct argo_ring_info *ring_info; + + ASSERT(LOCKING_Read_rings_L2(d)); + + id.aport = aport; + id.domain_id = d->domain_id; + id.partner_id = partner_id; + + ring_info = find_ring_info(d, &id); + if ( ring_info ) + return ring_info; + + id.partner_id = XEN_ARGO_DOMID_ANY; + + return find_ring_info(d, &id); +} + static struct argo_send_info * find_send_info(const struct domain *d, const struct argo_ring_id *id) { @@ -393,6 +426,14 @@ find_send_info(const struct domain *d, const struct argo_ring_id *id) } static void +signal_domain(struct domain *d) +{ + argo_dprintk("signalling domid:%u\n", d->domain_id); + + send_guest_global_virq(d, VIRQ_ARGO); +} + +static void ring_unmap(const struct domain *d, struct argo_ring_info *ring_info) { unsigned int i; @@ -486,6 +527,387 @@ update_tx_ptr(const struct domain *d, struct argo_ring_info *ring_info, smp_wmb(); } +static int +memcpy_to_guest_ring(const struct domain *d, struct argo_ring_info *ring_info, + unsigned int offset, + const void *src, XEN_GUEST_HANDLE(uint8) src_hnd, + unsigned int len) +{ + unsigned int mfns_index = offset >> PAGE_SHIFT; + void *dst; + int ret; + unsigned int src_offset = 0; + + ASSERT(LOCKING_L3(d, ring_info)); + + offset &= ~PAGE_MASK; + + if ( len + offset > XEN_ARGO_MAX_RING_SIZE ) + return -EFAULT; + + while ( len ) + { + unsigned int head_len = (offset + len) > PAGE_SIZE ? PAGE_SIZE - offset + : len; + + ret = ring_map_page(d, ring_info, mfns_index, &dst); + if ( ret ) + return ret; + + if ( src ) + { + memcpy(dst + offset, src + src_offset, head_len); + src_offset += head_len; + } + else + { + if ( copy_from_guest(dst + offset, src_hnd, head_len) ) + return -EFAULT; + + guest_handle_add_offset(src_hnd, head_len); + } + + mfns_index++; + len -= head_len; + offset = 0; + } + + return 0; +} + +/* + * Use this with caution: rx_ptr is under guest control and may be bogus. + * See get_sanitized_ring for a safer alternative. + */ +static int +get_rx_ptr(const struct domain *d, struct argo_ring_info *ring_info, + uint32_t *rx_ptr) +{ + void *src; + xen_argo_ring_t *ringp; + int ret; + + ASSERT(LOCKING_L3(d, ring_info)); + + if ( !ring_info->nmfns || ring_info->nmfns < NPAGES_RING(ring_info->len) ) + return -EINVAL; + + ret = ring_map_page(d, ring_info, 0, &src); + if ( ret ) + return ret; + + ringp = (xen_argo_ring_t *)src; + + *rx_ptr = read_atomic(&ringp->rx_ptr); + + return 0; +} + +/* + * get_sanitized_ring creates a modified copy of the ring pointers where + * the rx_ptr is rounded up to ensure it is aligned, and then ring + * wrap is handled. Simplifies safe use of the rx_ptr for available + * space calculation. + */ +static int +get_sanitized_ring(const struct domain *d, xen_argo_ring_t *ring, + struct argo_ring_info *ring_info) +{ + uint32_t rx_ptr; + int ret; + + ASSERT(LOCKING_L3(d, ring_info)); + + ret = get_rx_ptr(d, ring_info, &rx_ptr); + if ( ret ) + return ret; + + ring->tx_ptr = ring_info->tx_ptr; + + rx_ptr = ROUNDUP_MESSAGE(rx_ptr); + if ( rx_ptr >= ring_info->len ) + rx_ptr = 0; + + ring->rx_ptr = rx_ptr; + + return 0; +} + +/* + * iov_count returns its count on success via an out variable to avoid + * potential for a negative return value to be used incorrectly + * (eg. coerced into an unsigned variable resulting in a large incorrect value) + */ +static int +iov_count(const xen_argo_iov_t *piov, unsigned int niov, + unsigned int *count) +{ + unsigned int sum_iov_lens = 0; + + if ( niov > XEN_ARGO_MAXIOV ) + return -EINVAL; + + for ( ; niov--; piov++ ) + { + /* valid iovs must have the padding field set to zero */ + if ( piov->pad ) + { + argo_dprintk("invalid iov: padding is not zero\n"); + return -EINVAL; + } + + /* check each to protect sum against integer overflow */ + if ( piov->iov_len > MAX_ARGO_MESSAGE_SIZE ) + { + argo_dprintk("invalid iov_len: too big (%u)>%llu\n", + piov->iov_len, MAX_ARGO_MESSAGE_SIZE); + return -EINVAL; + } + + sum_iov_lens += piov->iov_len; + + /* + * Again protect sum from integer overflow + * and ensure total msg size will be within bounds. + */ + if ( sum_iov_lens > MAX_ARGO_MESSAGE_SIZE ) + { + argo_dprintk("invalid iov series: total message too big\n"); + return -EMSGSIZE; + } + } + + *count = sum_iov_lens; + + return 0; +} + +static int +ringbuf_insert(const struct domain *d, struct argo_ring_info *ring_info, + const struct argo_ring_id *src_id, xen_argo_iov_t *iovs, + unsigned int niov, uint32_t message_type, + unsigned long *out_len) +{ + xen_argo_ring_t ring; + struct xen_argo_ring_message_header mh = { }; + int sp, ret; + unsigned int len = 0; + xen_argo_iov_t *piov; + XEN_GUEST_HANDLE(uint8) NULL_hnd = { }; + + ASSERT(LOCKING_L3(d, ring_info)); + + /* + * Obtain the total size of data to transmit -- sets the 'len' variable + * -- and sanity check that the iovs conform to size and number limits. + * Enforced below: no more than 'len' bytes of guest data + * (plus the message header) will be sent in this operation. + */ + ret = iov_count(iovs, niov, &len); + if ( ret ) + return ret; + + /* + * Upper bound check the message len against the ring size. + * The message must not fill the ring; there must be at least one slot + * remaining so we can distinguish a full ring from an empty one. + * iov_count has already verified: len <= MAX_ARGO_MESSAGE_SIZE. + */ + if ( ring_info->len <= (sizeof(struct xen_argo_ring_message_header) + + ROUNDUP_MESSAGE(len)) ) + return -EMSGSIZE; + + ret = get_sanitized_ring(d, &ring, ring_info); + if ( ret ) + return ret; + + argo_dprintk("ring.tx_ptr=%u ring.rx_ptr=%u ring len=%u" + " ring_info->tx_ptr=%u\n", + ring.tx_ptr, ring.rx_ptr, ring_info->len, ring_info->tx_ptr); + + if ( ring.rx_ptr == ring.tx_ptr ) + sp = ring_info->len; + else + { + sp = ring.rx_ptr - ring.tx_ptr; + if ( sp < 0 ) + sp += ring_info->len; + } + + /* + * Size bounds check against currently available space in the ring. + * Again: the message must not fill the ring leaving no space remaining. + */ + if ( (ROUNDUP_MESSAGE(len) + + sizeof(struct xen_argo_ring_message_header)) >= sp ) + { + argo_dprintk("EAGAIN\n"); + return -EAGAIN; + } + + mh.len = len + sizeof(struct xen_argo_ring_message_header); + mh.source.aport = src_id->aport; + mh.source.domain_id = src_id->domain_id; + mh.message_type = message_type; + + /* + * For this copy to the guest ring, tx_ptr is always 16-byte aligned + * and the message header is 16 bytes long. + */ + BUILD_BUG_ON( + sizeof(struct xen_argo_ring_message_header) != ROUNDUP_MESSAGE(1)); + + /* + * First data write into the destination ring: fixed size, message header. + * This cannot overrun because the available free space (value in 'sp') + * is checked above and must be at least this size. + */ + ret = memcpy_to_guest_ring(d, ring_info, + ring.tx_ptr + sizeof(xen_argo_ring_t), + &mh, NULL_hnd, sizeof(mh)); + if ( ret ) + { + gprintk(XENLOG_ERR, + "argo: failed to write message header to ring (vm%u:%x vm%u)\n", + ring_info->id.domain_id, ring_info->id.aport, + ring_info->id.partner_id); + + return ret; + } + + ring.tx_ptr += sizeof(mh); + if ( ring.tx_ptr == ring_info->len ) + ring.tx_ptr = 0; + + for ( piov = iovs; niov--; piov++ ) + { + XEN_GUEST_HANDLE(uint8) buf_hnd = piov->iov_hnd; + unsigned int iov_len = piov->iov_len; + + /* If no data is provided in this iov, moan and skip on to the next */ + if ( !iov_len ) + { + gprintk(XENLOG_WARNING, + "argo: no data iov_len=0 iov_hnd=%p ring (vm%u:%x vm%u)\n", + buf_hnd.p, ring_info->id.domain_id, ring_info->id.aport, + ring_info->id.partner_id); + + continue; + } + + if ( unlikely(!guest_handle_okay(buf_hnd, iov_len)) ) + { + gprintk(XENLOG_ERR, + "argo: bad iov handle [%p, %u] (vm%u:%x vm%u)\n", + buf_hnd.p, iov_len, + ring_info->id.domain_id, ring_info->id.aport, + ring_info->id.partner_id); + + return -EFAULT; + } + + sp = ring_info->len - ring.tx_ptr; + + /* Check: iov data size versus free space at the tail of the ring */ + if ( iov_len > sp ) + { + /* + * Second possible data write: ring-tail-wrap-write. + * Populate the ring tail and update the internal tx_ptr to handle + * wrapping at the end of ring. + * Size of data written here: sp + * which is the exact full amount of free space available at the + * tail of the ring, so this cannot overrun. + */ + ret = memcpy_to_guest_ring(d, ring_info, + ring.tx_ptr + sizeof(xen_argo_ring_t), + NULL, buf_hnd, sp); + if ( ret ) + { + gprintk(XENLOG_ERR, + "argo: failed to copy {%p, %d} (vm%u:%x vm%u)\n", + buf_hnd.p, sp, + ring_info->id.domain_id, ring_info->id.aport, + ring_info->id.partner_id); + + return ret; + } + + ring.tx_ptr = 0; + iov_len -= sp; + guest_handle_add_offset(buf_hnd, sp); + + ASSERT(iov_len <= ring_info->len); + } + + /* + * Third possible data write: all data remaining for this iov. + * Size of data written here: iov_len + * + * Case 1: if the ring-tail-wrap-write above was performed, then + * iov_len has been decreased by 'sp' and ring.tx_ptr is zero. + * + * We know from checking the result of iov_count: + * len + sizeof(message_header) <= ring_info->len + * We also know that len is the total of summing all iov_lens, so: + * iov_len <= len + * so by transitivity: + * iov_len <= len <= (ring_info->len - sizeof(msgheader)) + * and therefore: + * (iov_len + sizeof(msgheader) <= ring_info->len) && + * (ring.tx_ptr == 0) + * so this write cannot overrun here. + * + * Case 2: ring-tail-wrap-write above was not performed + * -> so iov_len is the guest-supplied value and: (iov_len <= sp) + * ie. less than available space at the tail of the ring: + * so this write cannot overrun. + */ + ret = memcpy_to_guest_ring(d, ring_info, + ring.tx_ptr + sizeof(xen_argo_ring_t), + NULL, buf_hnd, iov_len); + if ( ret ) + { + gprintk(XENLOG_ERR, + "argo: failed to copy [%p, %u] (vm%u:%x vm%u)\n", + buf_hnd.p, iov_len, ring_info->id.domain_id, + ring_info->id.aport, ring_info->id.partner_id); + + return ret; + } + + ring.tx_ptr += iov_len; + + if ( ring.tx_ptr == ring_info->len ) + ring.tx_ptr = 0; + } + + /* + * Finished writing data from all iovs into the ring: now need to round up + * tx_ptr to align to the next message boundary, and then wrap if necessary. + */ + ring.tx_ptr = ROUNDUP_MESSAGE(ring.tx_ptr); + + if ( ring.tx_ptr >= ring_info->len ) + ring.tx_ptr -= ring_info->len; + + update_tx_ptr(d, ring_info, ring.tx_ptr); + + /* + * At this point (and also on an error exit paths from this function) it is + * possible to unmap the ring_info, ie: + * ring_unmap(d, ring_info); + * but performance should be improved by not doing so, and retaining + * the mapping. + * An XSM policy control over level of confidentiality required + * versus performance cost could be added to decide that here. + */ + + *out_len = len; + + return ret; +} + static void wildcard_pending_list_remove(domid_t domain_id, struct pending_ent *ent) { @@ -506,6 +928,25 @@ wildcard_pending_list_remove(domid_t domain_id, struct pending_ent *ent) } static void +wildcard_pending_list_insert(domid_t domain_id, struct pending_ent *ent) +{ + struct domain *d = get_domain_by_id(domain_id); + + if ( !d ) + return; + + ASSERT(LOCKING_Read_L1); + + if ( d->argo ) + { + spin_lock(&d->argo->wildcard_L2_lock); + list_add(&ent->wildcard_node, &d->argo->wildcard_pend_list); + spin_unlock(&d->argo->wildcard_L2_lock); + } + put_domain(d); +} + +static void pending_remove_all(const struct domain *d, struct argo_ring_info *ring_info) { struct pending_ent *ent; @@ -525,6 +966,66 @@ pending_remove_all(const struct domain *d, struct argo_ring_info *ring_info) ring_info->npending = 0; } +static int +pending_queue(const struct domain *d, struct argo_ring_info *ring_info, + domid_t src_id, unsigned int len) +{ + struct pending_ent *ent; + + ASSERT(LOCKING_L3(d, ring_info)); + + if ( ring_info->npending >= MAX_PENDING_PER_RING ) + return -EBUSY; + + ent = xmalloc(struct pending_ent); + if ( !ent ) + return -ENOMEM; + + ent->len = len; + ent->domain_id = src_id; + ent->ring_info = ring_info; + + if ( ring_info->id.partner_id == XEN_ARGO_DOMID_ANY ) + wildcard_pending_list_insert(src_id, ent); + list_add(&ent->node, &ring_info->pending); + ring_info->npending++; + + return 0; +} + +static int +pending_requeue(const struct domain *d, struct argo_ring_info *ring_info, + domid_t src_id, unsigned int len) +{ + struct pending_ent *ent; + + ASSERT(LOCKING_L3(d, ring_info)); + + /* List structure is not modified here. Update len in a match if found. */ + list_for_each_entry(ent, &ring_info->pending, node) + { + if ( ent->domain_id == src_id ) + { + /* + * Reuse an existing queue entry for a notification rather than add + * another. If the existing entry is waiting for a smaller size than + * the current message then adjust the record to wait for the + * current (larger) size to be available before triggering a + * notification. + * This assists the waiting sender by ensuring that whenever a + * notification is triggered, there is sufficient space available + * for (at least) any one of the messages awaiting transmission. + */ + if ( ent->len < len ) + ent->len = len; + + return 0; + } + } + + return pending_queue(d, ring_info, src_id, len); +} + static void wildcard_rings_pending_remove(struct domain *d) { @@ -1092,6 +1593,98 @@ register_ring(struct domain *currd, return ret; } +static long +sendv(struct domain *src_d, xen_argo_addr_t *src_addr, + const xen_argo_addr_t *dst_addr, xen_argo_iov_t *iovs, unsigned int niov, + uint32_t message_type) +{ + struct domain *dst_d = NULL; + struct argo_ring_id src_id; + struct argo_ring_info *ring_info; + int ret = 0; + unsigned long len = 0; + + argo_dprintk("sendv: (%u:%x)->(%u:%x) niov:%u type:%x\n", + src_addr->domain_id, src_addr->aport, dst_addr->domain_id, + dst_addr->aport, niov, message_type); + + /* Check padding is zeroed. */ + if ( unlikely(src_addr->pad || dst_addr->pad) ) + return -EINVAL; + + if ( src_addr->domain_id == XEN_ARGO_DOMID_ANY ) + src_addr->domain_id = src_d->domain_id; + + /* No domain is currently authorized to send on behalf of another */ + if ( unlikely(src_addr->domain_id != src_d->domain_id) ) + return -EPERM; + + src_id.aport = src_addr->aport; + src_id.domain_id = src_d->domain_id; + src_id.partner_id = dst_addr->domain_id; + + dst_d = get_domain_by_id(dst_addr->domain_id); + if ( !dst_d ) + return -ESRCH; + + read_lock(&L1_global_argo_rwlock); + + if ( !src_d->argo ) + { + ret = -ENODEV; + goto out_unlock; + } + + if ( !dst_d->argo ) + { + argo_dprintk("!dst_d->argo, ECONNREFUSED\n"); + ret = -ECONNREFUSED; + goto out_unlock; + } + + read_lock(&dst_d->argo->rings_L2_rwlock); + + ring_info = find_ring_info_by_match(dst_d, dst_addr->aport, + src_id.domain_id); + if ( !ring_info ) + { + gprintk(XENLOG_ERR, + "argo: vm%u connection refused, src (vm%u:%x) dst (vm%u:%x)\n", + current->domain->domain_id, src_id.domain_id, src_id.aport, + dst_addr->domain_id, dst_addr->aport); + + ret = -ECONNREFUSED; + } + else + { + spin_lock(&ring_info->L3_lock); + + ret = ringbuf_insert(dst_d, ring_info, &src_id, iovs, niov, + message_type, &len); + if ( ret == -EAGAIN ) + { + argo_dprintk("argo_ringbuf_sendv failed, EAGAIN\n"); + /* requeue to issue a notification when space is there */ + ret = pending_requeue(dst_d, ring_info, src_id.domain_id, len); + } + + spin_unlock(&ring_info->L3_lock); + } + + read_unlock(&dst_d->argo->rings_L2_rwlock); + + out_unlock: + read_unlock(&L1_global_argo_rwlock); + + if ( ret >= 0 ) + signal_domain(dst_d); + + if ( dst_d ) + put_domain(dst_d); + + return ( ret < 0 ) ? ret : len; +} + long do_argo_op(unsigned int cmd, XEN_GUEST_HANDLE_PARAM(void) arg1, XEN_GUEST_HANDLE_PARAM(void) arg2, unsigned long raw_arg3, @@ -1155,6 +1748,51 @@ do_argo_op(unsigned int cmd, XEN_GUEST_HANDLE_PARAM(void) arg1, break; } + case XEN_ARGO_OP_sendv: + { + xen_argo_send_addr_t send_addr; + xen_argo_iov_t iovs[XEN_ARGO_MAXIOV]; + unsigned int niov; + + XEN_GUEST_HANDLE_PARAM(xen_argo_send_addr_t) send_addr_hnd = + guest_handle_cast(arg1, xen_argo_send_addr_t); + XEN_GUEST_HANDLE_PARAM(xen_argo_iov_t) iovs_hnd = + guest_handle_cast(arg2, xen_argo_iov_t); + /* arg3 is niov */ + /* arg4 is message_type. Must be a 32-bit value. */ + + /* XEN_ARGO_MAXIOV value determines size of iov array on stack */ + BUILD_BUG_ON(XEN_ARGO_MAXIOV > 8); + + rc = copy_from_guest(&send_addr, send_addr_hnd, 1) ? -EFAULT : 0; + if ( rc ) + { + rc = -EFAULT; + break; + } + + /* + * Reject niov above maximum limit or message_types that are outside + * 32 bit range. + */ + if ( unlikely((arg3 > XEN_ARGO_MAXIOV) || (arg4 != (uint32_t)arg4)) ) + { + rc = -EINVAL; + break; + } + niov = array_index_nospec(arg3, XEN_ARGO_MAXIOV + 1); + + rc = copy_from_guest(iovs, iovs_hnd, niov) ? -EFAULT : 0; + if ( rc ) + { + rc = -EFAULT; + break; + } + + rc = sendv(currd, &send_addr.src, &send_addr.dst, iovs, niov, arg4); + break; + } + default: rc = -EOPNOTSUPP; break; @@ -1171,8 +1809,60 @@ compat_argo_op(unsigned int cmd, XEN_GUEST_HANDLE_PARAM(void) arg1, XEN_GUEST_HANDLE_PARAM(void) arg2, unsigned long arg3, unsigned long arg4) { - /* Forward all ops to the native handler */ - return do_argo_op(cmd, arg1, arg2, arg3, arg4); + struct domain *currd = current->domain; + long rc; + xen_argo_send_addr_t send_addr; + xen_argo_iov_t iovs[XEN_ARGO_MAXIOV]; + compat_argo_iov_t compat_iovs[XEN_ARGO_MAXIOV]; + unsigned int i, niov; + XEN_GUEST_HANDLE_PARAM(xen_argo_send_addr_t) send_addr_hnd; + + /* check XEN_ARGO_MAXIOV as it sizes stack arrays: iovs, compat_iovs */ + BUILD_BUG_ON(XEN_ARGO_MAXIOV > 8); + + /* Forward all ops besides sendv to the native handler. */ + if ( cmd != XEN_ARGO_OP_sendv ) + return do_argo_op(cmd, arg1, arg2, arg3, arg4); + + if ( unlikely(!opt_argo) ) + return -EOPNOTSUPP; + + argo_dprintk("->compat_argo_op(%u,%p,%p,%lu,0x%lx)\n", cmd, + (void *)arg1.p, (void *)arg2.p, arg3, arg4); + + send_addr_hnd = guest_handle_cast(arg1, xen_argo_send_addr_t); + /* arg2: iovs, arg3: niov, arg4: message_type */ + + rc = copy_from_guest(&send_addr, send_addr_hnd, 1) ? -EFAULT : 0; + if ( rc ) + goto out; + + if ( unlikely(arg3 > XEN_ARGO_MAXIOV) ) + { + rc = -EINVAL; + goto out; + } + niov = array_index_nospec(arg3, XEN_ARGO_MAXIOV + 1); + + rc = copy_from_guest(compat_iovs, arg2, niov) ? -EFAULT : 0; + if ( rc ) + goto out; + + for ( i = 0; i < niov; i++ ) + { +#define XLAT_argo_iov_HNDL_iov_hnd(_d_, _s_) \ + guest_from_compat_handle((_d_)->iov_hnd, (_s_)->iov_hnd) + + XLAT_argo_iov(&iovs[i], &compat_iovs[i]); + +#undef XLAT_argo_iov_HNDL_iov_hnd + } + + rc = sendv(currd, &send_addr.src, &send_addr.dst, iovs, niov, arg4); + out: + argo_dprintk("<-compat_argo_op(%u)=%ld\n", cmd, rc); + + return rc; } #endif diff --git a/xen/common/event_channel.c b/xen/common/event_channel.c index f34d4f039d..6fbe346490 100644 --- a/xen/common/event_channel.c +++ b/xen/common/event_channel.c @@ -746,7 +746,7 @@ void send_guest_vcpu_virq(struct vcpu *v, uint32_t virq) spin_unlock_irqrestore(&v->virq_lock, flags); } -static void send_guest_global_virq(struct domain *d, uint32_t virq) +void send_guest_global_virq(struct domain *d, uint32_t virq) { unsigned long flags; int port; diff --git a/xen/include/public/argo.h b/xen/include/public/argo.h index 29856df34a..ee3801c794 100644 --- a/xen/include/public/argo.h +++ b/xen/include/public/argo.h @@ -42,6 +42,22 @@ typedef uint32_t xen_argo_port_t; /* gfn type: 64-bit fixed-width on all architectures */ typedef uint64_t xen_argo_gfn_t; +/* + * XEN_ARGO_MAXIOV : maximum number of iovs accepted in a single sendv. + * Caution is required if this value is increased: this determines the size of + * an array of xen_argo_iov_t structs on the hypervisor stack, so could cause + * stack overflow if the value is too large. + * The Linux Argo driver never passes more than two iovs. +*/ +#define XEN_ARGO_MAXIOV 8U + +typedef struct xen_argo_iov +{ + XEN_GUEST_HANDLE(uint8) iov_hnd; + uint32_t iov_len; + uint32_t pad; +} xen_argo_iov_t; + typedef struct xen_argo_addr { xen_argo_port_t aport; @@ -49,6 +65,12 @@ typedef struct xen_argo_addr uint16_t pad; } xen_argo_addr_t; +typedef struct xen_argo_send_addr +{ + struct xen_argo_addr src; + struct xen_argo_addr dst; +} xen_argo_send_addr_t; + typedef struct xen_argo_ring { /* Guests should use atomic operations to access rx_ptr */ @@ -149,4 +171,30 @@ struct xen_argo_ring_message_header */ #define XEN_ARGO_OP_unregister_ring 2 +/* + * XEN_ARGO_OP_sendv + * + * Send a list of buffers contained in iovs. + * + * The send address struct specifies the source and destination addresses + * for the message being sent, which are used to find the destination ring: + * Xen first looks for a most-specific match with a registered ring with + * (id.addr == dst) and (id.partner == sending_domain) ; + * if that fails, it then looks for a wildcard match (aka multicast receiver) + * where (id.addr == dst) and (id.partner == DOMID_ANY). + * + * For each iov entry, send iov_len bytes from iov_base to the destination ring. + * If insufficient space exists in the destination ring, it will return -EAGAIN + * and Xen will notify the caller when sufficient space becomes available. + * + * The message type is a 32-bit data field available to communicate message + * context data (eg. kernel-to-kernel, rather than application layer). + * + * arg1: XEN_GUEST_HANDLE(xen_argo_send_addr_t) source and dest addresses + * arg2: XEN_GUEST_HANDLE(xen_argo_iov_t) iovs + * arg3: unsigned long niov + * arg4: unsigned long message type (32-bit value) + */ +#define XEN_ARGO_OP_sendv 3 + #endif diff --git a/xen/include/public/xen.h b/xen/include/public/xen.h index b3f6491764..ccdffc0ad1 100644 --- a/xen/include/public/xen.h +++ b/xen/include/public/xen.h @@ -178,7 +178,7 @@ DEFINE_XEN_GUEST_HANDLE(xen_ulong_t); #define VIRQ_CON_RING 8 /* G. (DOM0) Bytes received on console */ #define VIRQ_PCPU_STATE 9 /* G. (DOM0) PCPU state changed */ #define VIRQ_MEM_EVENT 10 /* G. (DOM0) A memory event has occurred */ -#define VIRQ_XC_RESERVED 11 /* G. Reserved for XenClient */ +#define VIRQ_ARGO 11 /* G. Argo interdomain message notification */ #define VIRQ_ENOMEM 12 /* G. (DOM0) Low on heap memory */ #define VIRQ_XENPMU 13 /* V. PMC interrupt */ diff --git a/xen/include/xen/event.h b/xen/include/xen/event.h index ebb879e88d..46508878bb 100644 --- a/xen/include/xen/event.h +++ b/xen/include/xen/event.h @@ -29,6 +29,13 @@ void send_guest_vcpu_virq(struct vcpu *v, uint32_t virq); void send_global_virq(uint32_t virq); /* + * send_guest_global_virq: + * @d: Domain to which VIRQ should be sent + * @virq: Virtual IRQ number (VIRQ_*), must be global + */ +void send_guest_global_virq(struct domain *d, uint32_t virq); + +/* * sent_global_virq_handler: Set a global VIRQ handler. * @d: New target domain for this VIRQ * @virq: Virtual IRQ number (VIRQ_*), must be global diff --git a/xen/include/xlat.lst b/xen/include/xlat.lst index ee7dffc7e8..0d65f6a2fd 100644 --- a/xen/include/xlat.lst +++ b/xen/include/xlat.lst @@ -31,9 +31,11 @@ ! mc_physcpuinfo arch-x86/xen-mca.h ? page_offline_action arch-x86/xen-mca.h ? argo_addr argo.h +! argo_iov argo.h ? argo_register_ring argo.h ? argo_ring argo.h ? argo_ring_message_header argo.h +? argo_send_addr argo.h ? argo_unregister_ring argo.h ? evtchn_alloc_unbound event_channel.h ? evtchn_bind_interdomain event_channel.h -- generated by git-patchbot for /home/xen/git/xen.git#staging --===============0331610627817586415== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============0331610627817586415==-- From xen-changelog-bounces@lists.xenproject.org Thu Feb 07 13:34:40 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 07 Feb 2019 13:34:40 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjpA-000479-7c; Thu, 07 Feb 2019 13:34:40 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjp8-000470-Pt for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:34:38 +0000 X-Inumbo-ID: 1cc7fa89-2add-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 1cc7fa89-2add-11e9-bc90-bc764e045a96; Thu, 07 Feb 2019 13:34:37 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjp6-0007h0-UJ for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:34:36 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grjp6-0002xj-Rm for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:34:36 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 07 Feb 2019 13:34:36 +0000 Subject: [Xen-changelog] [xen staging] argo: implement the notify op X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0609862995888911658==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============0609862995888911658== Content-Type: text/plain commit 64b9c3422b81752036b4222e1f7229632f77315c Author: Christopher Clark AuthorDate: Wed Feb 6 09:55:00 2019 +0100 Commit: Jan Beulich CommitDate: Thu Feb 7 14:24:55 2019 +0100 argo: implement the notify op Queries for data about space availability in registered rings and causes notification to be sent when space has become available. The hypercall op populates a supplied data structure with information about ring state and if insufficient space is currently available in a given ring, the hypervisor will record the domain's expressed interest and notify it when it observes that space has become available. Checks for free space occur when this notify op is invoked, so it may be intentionally invoked with no data structure to populate (ie. a NULL argument) to trigger such a check and consequent notifications. Limit the maximum number of notify requests in a single operation to a simple fixed limit of 256. Signed-off-by: Christopher Clark Tested-by: Chris Patterson Reviewed-by: Roger Pau Monné Release-acked-by: Juergen Gross --- xen/common/argo.c | 371 ++++++++++++++++++++++++++++++++++++++++++++++ xen/include/public/argo.h | 67 +++++++++ xen/include/xlat.lst | 2 + 3 files changed, 440 insertions(+) diff --git a/xen/common/argo.c b/xen/common/argo.c index 45d1090778..dce90ee302 100644 --- a/xen/common/argo.c +++ b/xen/common/argo.c @@ -36,12 +36,17 @@ CHECK_argo_addr; #define CHECK_argo_addr struct xen_argo_addr CHECK_argo_register_ring; CHECK_argo_ring; +CHECK_argo_ring_data_ent; +#undef CHECK_argo_ring_data_ent +#define CHECK_argo_ring_data_ent struct xen_argo_ring_data_ent +CHECK_argo_ring_data; CHECK_argo_ring_message_header; CHECK_argo_unregister_ring; CHECK_argo_send_addr; #endif #define MAX_RINGS_PER_DOMAIN 128U +#define MAX_NOTIFY_COUNT 256U #define MAX_PENDING_PER_RING 32U /* All messages on the ring are padded to a multiple of the slot size. */ @@ -61,6 +66,8 @@ DEFINE_XEN_GUEST_HANDLE(xen_argo_gfn_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_iov_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_register_ring_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_ring_t); +DEFINE_XEN_GUEST_HANDLE(xen_argo_ring_data_t); +DEFINE_XEN_GUEST_HANDLE(xen_argo_ring_data_ent_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_send_addr_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_unregister_ring_t); #ifdef CONFIG_COMPAT @@ -434,6 +441,18 @@ signal_domain(struct domain *d) } static void +signal_domid(domid_t domain_id) +{ + struct domain *d = get_domain_by_id(domain_id); + + if ( !d ) + return; + + signal_domain(d); + put_domain(d); +} + +static void ring_unmap(const struct domain *d, struct argo_ring_info *ring_info) { unsigned int i; @@ -633,6 +652,66 @@ get_sanitized_ring(const struct domain *d, xen_argo_ring_t *ring, return 0; } +static unsigned int +ringbuf_payload_space(const struct domain *d, struct argo_ring_info *ring_info) +{ + xen_argo_ring_t ring; + unsigned int len; + int ret; + + ASSERT(LOCKING_L3(d, ring_info)); + + len = ring_info->len; + if ( !len ) + return 0; + + if ( get_sanitized_ring(d, &ring, ring_info) ) + return 0; + + argo_dprintk("sanitized ringbuf_payload_space: tx_ptr=%u rx_ptr=%u\n", + ring.tx_ptr, ring.rx_ptr); + + /* + * rx_ptr == tx_ptr means that the ring has been emptied. + * See message size checking logic in the entry to ringbuf_insert which + * ensures that there is always one message slot of size ROUNDUP_MESSAGE(1) + * left available, preventing a ring from being entirely filled. + * This ensures that matching ring indexes always indicate an empty ring + * and never a full one. + */ + ret = ring.rx_ptr - ring.tx_ptr; + if ( ret <= 0 ) + ret += len; + + /* + * In a sanitized ring, we can rely on: + * (rx_ptr < ring_info->len) && + * (tx_ptr < ring_info->len) && + * (ring_info->len <= XEN_ARGO_MAX_RING_SIZE) + * + * and since: XEN_ARGO_MAX_RING_SIZE < INT32_MAX + * therefore right here: ret < INT32_MAX + * and we are safe to return it as a unsigned value from this function. + * The subtractions below cannot increase its value. + */ + + /* + * The maximum size payload for a message that will be accepted is: + * (the available space between the ring indexes) + * minus (space for a message header) + * minus (space for one message slot) + * since ringbuf_insert requires that one message slot be left + * unfilled, to avoid filling the ring to capacity and confusing a full + * ring with an empty one. + * Since the ring indexes are sanitized, the value in ret is aligned, so + * the simple subtraction here works to return the aligned value needed: + */ + ret -= sizeof(struct xen_argo_ring_message_header); + ret -= ROUNDUP_MESSAGE(1); + + return (ret < 0) ? 0 : ret; +} + /* * iov_count returns its count on success via an out variable to avoid * potential for a negative return value to be used incorrectly @@ -966,6 +1045,64 @@ pending_remove_all(const struct domain *d, struct argo_ring_info *ring_info) ring_info->npending = 0; } +static void +pending_notify(struct list_head *to_notify) +{ + struct pending_ent *ent; + + ASSERT(LOCKING_Read_L1); + + /* Sending signals for all ents in this list, draining until it is empty. */ + while ( (ent = list_first_entry_or_null(to_notify, struct pending_ent, + node)) ) + { + list_del(&ent->node); + signal_domid(ent->domain_id); + xfree(ent); + } +} + +static void +pending_find(const struct domain *d, struct argo_ring_info *ring_info, + unsigned int payload_space, struct list_head *to_notify) +{ + struct pending_ent *ent, *next; + + ASSERT(LOCKING_Read_rings_L2(d)); + + /* + * TODO: Current policy here is to signal _all_ of the waiting domains + * interested in sending a message of size less than payload_space. + * + * This is likely to be suboptimal, since once one of them has added + * their message to the ring, there may well be insufficient room + * available for any of the others to transmit, meaning that they were + * woken in vain, which created extra work just to requeue their wait. + * + * Retain this simple policy for now since it at least avoids starving a + * domain of available space notifications because of a policy that only + * notified other domains instead. Improvement may be possible; + * investigation required. + */ + spin_lock(&ring_info->L3_lock); + + /* Remove matching ents from the ring list, and add them to "to_notify" */ + list_for_each_entry_safe(ent, next, &ring_info->pending, node) + { + if ( payload_space >= ent->len ) + { + if ( ring_info->id.partner_id == XEN_ARGO_DOMID_ANY ) + wildcard_pending_list_remove(ent->domain_id, ent); + + list_del(&ent->node); + ring_info->npending--; + list_add(&ent->node, to_notify); + } + } + + spin_unlock(&ring_info->L3_lock); +} + static int pending_queue(const struct domain *d, struct argo_ring_info *ring_info, domid_t src_id, unsigned int len) @@ -1027,6 +1164,29 @@ pending_requeue(const struct domain *d, struct argo_ring_info *ring_info, } static void +pending_cancel(const struct domain *d, struct argo_ring_info *ring_info, + domid_t src_id) +{ + struct pending_ent *ent, *next; + + ASSERT(LOCKING_L3(d, ring_info)); + + /* Remove all ents where domain_id matches src_id from the ring's list. */ + list_for_each_entry_safe(ent, next, &ring_info->pending, node) + { + if ( ent->domain_id == src_id ) + { + /* For wildcard rings, remove each from their wildcard list too. */ + if ( ring_info->id.partner_id == XEN_ARGO_DOMID_ANY ) + wildcard_pending_list_remove(ent->domain_id, ent); + list_del(&ent->node); + xfree(ent); + ring_info->npending--; + } + } +} + +static void wildcard_rings_pending_remove(struct domain *d) { struct pending_ent *ent; @@ -1158,6 +1318,99 @@ partner_rings_remove(struct domain *src_d) } static int +fill_ring_data(const struct domain *currd, + XEN_GUEST_HANDLE(xen_argo_ring_data_ent_t) data_ent_hnd) +{ + xen_argo_ring_data_ent_t ent; + struct domain *dst_d; + struct argo_ring_info *ring_info; + int ret = 0; + + ASSERT(currd == current->domain); + ASSERT(LOCKING_Read_L1); + + if ( __copy_from_guest(&ent, data_ent_hnd, 1) ) + return -EFAULT; + + argo_dprintk("fill_ring_data: ent.ring.domain=%u,ent.ring.aport=%x\n", + ent.ring.domain_id, ent.ring.aport); + + ent.flags = 0; + + dst_d = get_domain_by_id(ent.ring.domain_id); + if ( !dst_d || !dst_d->argo ) + goto out; + + read_lock(&dst_d->argo->rings_L2_rwlock); + + ring_info = find_ring_info_by_match(dst_d, ent.ring.aport, + currd->domain_id); + if ( ring_info ) + { + unsigned int space_avail; + + ent.flags |= XEN_ARGO_RING_EXISTS; + + spin_lock(&ring_info->L3_lock); + + ent.max_message_size = ring_info->len - + sizeof(struct xen_argo_ring_message_header) - + ROUNDUP_MESSAGE(1); + + if ( ring_info->id.partner_id == XEN_ARGO_DOMID_ANY ) + ent.flags |= XEN_ARGO_RING_SHARED; + + space_avail = ringbuf_payload_space(dst_d, ring_info); + + argo_dprintk("fill_ring_data: aport=%x space_avail=%u" + " space_wanted=%u\n", + ring_info->id.aport, space_avail, ent.space_required); + + /* Do not queue a notification for an unachievable size */ + if ( ent.space_required > ent.max_message_size ) + ent.flags |= XEN_ARGO_RING_EMSGSIZE; + else if ( space_avail >= ent.space_required ) + { + pending_cancel(dst_d, ring_info, currd->domain_id); + ent.flags |= XEN_ARGO_RING_SUFFICIENT; + } + else + { + ret = pending_requeue(dst_d, ring_info, currd->domain_id, + ent.space_required); + if ( ret == -EBUSY ) + { + /* + * Too many other domains are already awaiting notification + * about available space on this ring. Indicate this state via + * flag. No need to return an error to the caller; allow the + * processing of queries about other rings to continue. + */ + ent.flags |= XEN_ARGO_RING_EBUSY; + ret = 0; + } + } + + spin_unlock(&ring_info->L3_lock); + + if ( space_avail == ent.max_message_size ) + ent.flags |= XEN_ARGO_RING_EMPTY; + + } + read_unlock(&dst_d->argo->rings_L2_rwlock); + + out: + if ( dst_d ) + put_domain(dst_d); + + if ( !ret && (__copy_field_to_guest(data_ent_hnd, &ent, flags) || + __copy_field_to_guest(data_ent_hnd, &ent, max_message_size)) ) + return -EFAULT; + + return ret; +} + +static int find_ring_mfn(struct domain *d, gfn_t gfn, mfn_t *mfn) { struct page_info *page; @@ -1593,6 +1846,109 @@ register_ring(struct domain *currd, return ret; } +static void +notify_ring(const struct domain *d, struct argo_ring_info *ring_info, + struct list_head *to_notify) +{ + unsigned int space; + + ASSERT(LOCKING_Read_rings_L2(d)); + + spin_lock(&ring_info->L3_lock); + + if ( ring_info->len ) + space = ringbuf_payload_space(d, ring_info); + else + space = 0; + + spin_unlock(&ring_info->L3_lock); + + if ( space ) + pending_find(d, ring_info, space, to_notify); +} + +static void +notify_check_pending(struct domain *d) +{ + unsigned int i; + LIST_HEAD(to_notify); + + ASSERT(LOCKING_Read_L1); + + read_lock(&d->argo->rings_L2_rwlock); + + /* Walk all rings, call notify_ring on each to populate to_notify list */ + for ( i = 0; i < ARGO_HASHTABLE_SIZE; i++ ) + { + struct argo_ring_info *ring_info, *next; + struct list_head *bucket = &d->argo->ring_hash[i]; + + list_for_each_entry_safe(ring_info, next, bucket, node) + notify_ring(d, ring_info, &to_notify); + } + + read_unlock(&d->argo->rings_L2_rwlock); + + if ( !list_empty(&to_notify) ) + pending_notify(&to_notify); +} + +static long +notify(struct domain *currd, + XEN_GUEST_HANDLE_PARAM(xen_argo_ring_data_t) ring_data_hnd) +{ + XEN_GUEST_HANDLE(xen_argo_ring_data_ent_t) ent_hnd; + xen_argo_ring_data_t ring_data; + int ret = 0; + + ASSERT(currd == current->domain); + + read_lock(&L1_global_argo_rwlock); + + if ( !currd->argo ) + { + argo_dprintk("!d->argo, ENODEV\n"); + ret = -ENODEV; + goto out; + } + + notify_check_pending(currd); + + if ( guest_handle_is_null(ring_data_hnd) ) + goto out; + + ret = copy_from_guest(&ring_data, ring_data_hnd, 1) ? -EFAULT : 0; + if ( ret ) + goto out; + + if ( ring_data.nent > MAX_NOTIFY_COUNT ) + { + gprintk(XENLOG_ERR, "argo: notify entry count(%u) exceeds max(%u)\n", + ring_data.nent, MAX_NOTIFY_COUNT); + ret = -EACCES; + goto out; + } + + ent_hnd = guest_handle_for_field(ring_data_hnd, + xen_argo_ring_data_ent_t, data[0]); + if ( unlikely(!guest_handle_okay(ent_hnd, ring_data.nent)) ) + { + ret = -EFAULT; + goto out; + } + + while ( !ret && ring_data.nent-- ) + { + ret = fill_ring_data(currd, ent_hnd); + guest_handle_add_offset(ent_hnd, 1); + } + + out: + read_unlock(&L1_global_argo_rwlock); + + return ret; +} + static long sendv(struct domain *src_d, xen_argo_addr_t *src_addr, const xen_argo_addr_t *dst_addr, xen_argo_iov_t *iovs, unsigned int niov, @@ -1793,6 +2149,21 @@ do_argo_op(unsigned int cmd, XEN_GUEST_HANDLE_PARAM(void) arg1, break; } + case XEN_ARGO_OP_notify: + { + XEN_GUEST_HANDLE_PARAM(xen_argo_ring_data_t) ring_data_hnd = + guest_handle_cast(arg1, xen_argo_ring_data_t); + + if ( unlikely((!guest_handle_is_null(arg2)) || arg3 || arg4) ) + { + rc = -EINVAL; + break; + } + + rc = notify(currd, ring_data_hnd); + break; + } + default: rc = -EOPNOTSUPP; break; diff --git a/xen/include/public/argo.h b/xen/include/public/argo.h index ee3801c794..cc603d395d 100644 --- a/xen/include/public/argo.h +++ b/xen/include/public/argo.h @@ -107,6 +107,42 @@ typedef struct xen_argo_unregister_ring /* Messages on the ring are padded to a multiple of this size. */ #define XEN_ARGO_MSG_SLOT_SIZE 0x10 +/* + * Notify flags + */ +/* Ring exists */ +#define XEN_ARGO_RING_EXISTS (1U << 0) +/* Ring is shared, not unicast */ +#define XEN_ARGO_RING_SHARED (1U << 1) +/* Ring is empty */ +#define XEN_ARGO_RING_EMPTY (1U << 2) +/* Sufficient space to queue space_required bytes might exist */ +#define XEN_ARGO_RING_SUFFICIENT (1U << 3) +/* Insufficient ring size for space_required bytes */ +#define XEN_ARGO_RING_EMSGSIZE (1U << 4) +/* Too many domains waiting for available space signals for this ring */ +#define XEN_ARGO_RING_EBUSY (1U << 5) + +typedef struct xen_argo_ring_data_ent +{ + struct xen_argo_addr ring; + uint16_t flags; + uint16_t pad; + uint32_t space_required; + uint32_t max_message_size; +} xen_argo_ring_data_ent_t; + +typedef struct xen_argo_ring_data +{ + uint32_t nent; + uint32_t pad; +#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L + struct xen_argo_ring_data_ent data[]; +#elif defined(__GNUC__) + struct xen_argo_ring_data_ent data[0]; +#endif +} xen_argo_ring_data_t; + struct xen_argo_ring_message_header { uint32_t len; @@ -197,4 +233,35 @@ struct xen_argo_ring_message_header */ #define XEN_ARGO_OP_sendv 3 +/* + * XEN_ARGO_OP_notify + * + * Asks Xen for information about other rings in the system. + * + * ent->ring is the xen_argo_addr_t of the ring you want information on. + * Uses the same ring matching rules as XEN_ARGO_OP_sendv. + * + * ent->space_required : if this field is not null then Xen will check + * that there is space in the destination ring for this many bytes of payload. + * If the ring is too small for the requested space_required, it will set the + * XEN_ARGO_RING_EMSGSIZE flag on return. + * If sufficient space is available, it will set XEN_ARGO_RING_SUFFICIENT + * and CANCEL any pending notification for that ent->ring; otherwise it + * will schedule a notification event and the flag will not be set. + * + * These flags are set by Xen when notify replies: + * XEN_ARGO_RING_EXISTS ring exists + * XEN_ARGO_RING_SHARED ring is registered for wildcard partner + * XEN_ARGO_RING_EMPTY ring is empty + * XEN_ARGO_RING_SUFFICIENT sufficient space for space_required is there + * XEN_ARGO_RING_EMSGSIZE space_required is too large for the ring size + * XEN_ARGO_RING_EBUSY too many domains waiting for available space signals + * + * arg1: XEN_GUEST_HANDLE(xen_argo_ring_data_t) ring_data (may be NULL) + * arg2: NULL + * arg3: 0 (ZERO) + * arg4: 0 (ZERO) + */ +#define XEN_ARGO_OP_notify 4 + #endif diff --git a/xen/include/xlat.lst b/xen/include/xlat.lst index 0d65f6a2fd..e330f72580 100644 --- a/xen/include/xlat.lst +++ b/xen/include/xlat.lst @@ -34,6 +34,8 @@ ! argo_iov argo.h ? argo_register_ring argo.h ? argo_ring argo.h +? argo_ring_data argo.h +? argo_ring_data_ent argo.h ? argo_ring_message_header argo.h ? argo_send_addr argo.h ? argo_unregister_ring argo.h -- generated by git-patchbot for /home/xen/git/xen.git#staging --===============0609862995888911658== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============0609862995888911658==-- From xen-changelog-bounces@lists.xenproject.org Thu Feb 07 13:34:51 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 07 Feb 2019 13:34:51 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjpL-00048j-9d; Thu, 07 Feb 2019 13:34:51 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjpJ-00048V-6I for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:34:49 +0000 X-Inumbo-ID: 22dfd07e-2add-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 22dfd07e-2add-11e9-bc90-bc764e045a96; Thu, 07 Feb 2019 13:34:47 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjpH-0007i9-4y for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:34:47 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grjpH-0002z3-2K for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:34:47 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 07 Feb 2019 13:34:47 +0000 Subject: [Xen-changelog] [xen staging] xsm, argo: XSM control for argo register X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" 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cwpAQCAtMTksNSArMTksNiBAQCBjbGFzcyBldmVudAogY2xhc3MgZ3JhbnQKIGNsYXNzIHNlY3Vy aXR5CiBjbGFzcyB2ZXJzaW9uCitjbGFzcyBhcmdvCiAKICMgRkxBU0sKLS0KZ2VuZXJhdGVkIGJ5 IGdpdC1wYXRjaGJvdCBmb3IgL2hvbWUveGVuL2dpdC94ZW4uZ2l0I3N0YWdpbmcKCl9fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fClhlbi1jaGFuZ2Vsb2cgbWFp bGluZyBsaXN0Clhlbi1jaGFuZ2Vsb2dAbGlzdHMueGVucHJvamVjdC5vcmcKaHR0cHM6Ly9saXN0 cy54ZW5wcm9qZWN0Lm9yZy94ZW4tY2hhbmdlbG9n From xen-changelog-bounces@lists.xenproject.org Thu Feb 07 13:35:01 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 07 Feb 2019 13:35:01 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjpV-0004A3-Dx; Thu, 07 Feb 2019 13:35:01 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjpU-00049w-Ux for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:35:00 +0000 X-Inumbo-ID: 28f9005e-2add-11e9-a8a2-ffaecee7ba98 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 28f9005e-2add-11e9-a8a2-ffaecee7ba98; Thu, 07 Feb 2019 13:34:57 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjpR-0007iJ-C9 for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:34:57 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grjpR-00030U-9k for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:34:57 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 07 Feb 2019 13:34:57 +0000 Subject: [Xen-changelog] [xen staging] xsm, argo: XSM control for argo message send operation X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" 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IGdpdC1wYXRjaGJvdCBmb3IgL2hvbWUveGVuL2dpdC94ZW4uZ2l0I3N0YWdpbmcKCl9fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fClhlbi1jaGFuZ2Vsb2cgbWFp bGluZyBsaXN0Clhlbi1jaGFuZ2Vsb2dAbGlzdHMueGVucHJvamVjdC5vcmcKaHR0cHM6Ly9saXN0 cy54ZW5wcm9qZWN0Lm9yZy94ZW4tY2hhbmdlbG9n From xen-changelog-bounces@lists.xenproject.org Thu Feb 07 13:35:12 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 07 Feb 2019 13:35:12 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjpg-0004B3-G6; Thu, 07 Feb 2019 13:35:12 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjpf-0004Aw-7V for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:35:11 +0000 X-Inumbo-ID: 2f0c9a50-2add-11e9-97b4-fb504b3c69c0 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 2f0c9a50-2add-11e9-97b4-fb504b3c69c0; Thu, 07 Feb 2019 13:35:07 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjpb-0007ie-Il for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:35:07 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grjpb-00031y-GG for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:35:07 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 07 Feb 2019 13:35:07 +0000 Subject: [Xen-changelog] [xen staging] xsm, argo: XSM control for any access to argo by a domain X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: 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with ESMTPS id 3524311c-2add-11e9-bc90-bc764e045a96; Thu, 07 Feb 2019 13:35:18 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjpl-0007in-PQ for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:35:17 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grjpl-00032p-Mm for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:35:17 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 07 Feb 2019 13:35:17 +0000 Subject: [Xen-changelog] [xen staging] xsm, argo: notify: don't describe rings that cannot be sent to X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDJiZTdmMTdlNGI5ODg0OTQ3ODg4ZTQ0MmVmMGE0NDVkNTUyM2QxNWQKQXV0aG9yOiAg ICAgQ2hyaXN0b3BoZXIgQ2xhcmsgPGNocmlzdG9waGVyLncuY2xhcmtAZ21haWwuY29tPgpBdXRo b3JEYXRlOiBXZWQgRmViIDYgMDk6NTY6MDAgMjAxOSArMDEwMApDb21taXQ6ICAgICBKYW4gQmV1 bGljaCA8amJldWxpY2hAc3VzZS5jb20+CkNvbW1pdERhdGU6IFRodSBGZWIgNyAxNDoyNjozMCAy MDE5ICswMTAwCgogICAgeHNtLCBhcmdvOiBub3RpZnk6IGRvbid0IGRlc2NyaWJlIHJpbmdzIHRo YXQgY2Fubm90IGJlIHNlbnQgdG8KICAgIAogICAgU2lnbmVkLW9mZi1ieTogQ2hyaXN0b3BoZXIg Q2xhcmsgPGNocmlzdG9waGVyLmNsYXJrNkBiYWVzeXN0ZW1zLmNvbT4KICAgIEFja2VkLWJ5OiBE YW5pZWwgRGUgR3JhYWYgPGRnZGVncmFAdHljaG8ubnNhLmdvdj4KICAgIFRlc3RlZC1ieTogQ2hy aXMgUGF0dGVyc29uIDxwYXR0ZXJzb25jQGFpbmZvc2VjLmNvbT4KICAgIFJlbGVhc2UtYWNrZWQt Ynk6IEp1ZXJnZW4gR3Jvc3MgPGpncm9zc0BzdXNlLmNvbT4KLS0tCiB4ZW4vY29tbW9uL2FyZ28u YyB8IDExICsrKysrKysrKysrCiAxIGZpbGUgY2hhbmdlZCwgMTEgaW5zZXJ0aW9ucygrKQoKZGlm 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(Exim 4.89) (envelope-from ) id 1grjpv-0007jN-VT for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:35:27 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grjpv-000343-T4 for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:35:27 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 07 Feb 2019 13:35:27 +0000 Subject: [Xen-changelog] [xen staging] MAINTAINERS: add new section for Argo and self as maintainer X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============5196463208412641056==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============5196463208412641056== Content-Type: text/plain commit d39216106b1a50dccaa224e15f7a30a1cd32171e Author: Christopher Clark AuthorDate: Wed Feb 6 09:56:00 2019 +0100 Commit: Jan Beulich CommitDate: Thu Feb 7 14:26:57 2019 +0100 MAINTAINERS: add new section for Argo and self as maintainer Signed-off-by: Christopher Clark Reviewed-by: Roger Pau Monné Release-acked-by: Juergen Gross --- MAINTAINERS | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index e99d39eb47..a0cda4f7a1 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -158,6 +158,13 @@ S: Supported F: xen/arch/x86/hvm/svm/ F: xen/arch/x86/cpu/vpmu_amd.c +ARGO +M: Christopher Clark +S: Maintained +F: xen/include/public/argo.h +F: xen/include/xen/argo.h +F: xen/common/argo.c + ARINC653 SCHEDULER M: Josh Whitehead M: Robert VanVossen -- generated by git-patchbot for /home/xen/git/xen.git#staging --===============5196463208412641056== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============5196463208412641056==-- From xen-changelog-bounces@lists.xenproject.org Thu Feb 07 13:35:40 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 07 Feb 2019 13:35:40 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjq8-0004EA-MO; Thu, 07 Feb 2019 13:35:40 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjq7-0004E4-Gb for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:35:39 +0000 X-Inumbo-ID: 4152007d-2add-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 4152007d-2add-11e9-bc90-bc764e045a96; Thu, 07 Feb 2019 13:35:38 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjq6-0007jX-5H for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:35:38 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grjq6-00035I-2q for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:35:38 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 07 Feb 2019 13:35:38 +0000 Subject: [Xen-changelog] [xen staging] SUPPORT.md : add new entry for the Argo feature X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0183540876292673308==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============0183540876292673308== Content-Type: text/plain commit 7da53237c5699bb0715c421f8b635ca3148de7d9 Author: Christopher Clark AuthorDate: Wed Feb 6 10:04:00 2019 +0100 Commit: Jan Beulich CommitDate: Thu Feb 7 14:27:04 2019 +0100 SUPPORT.md : add new entry for the Argo feature Status: Experimental Signed-off-by: Christopher Clark Reviewed-by: Roger Pau Monné Release-acked-by: Juergen Gross --- SUPPORT.md | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/SUPPORT.md b/SUPPORT.md index 7c8493c02a..19fc8d7533 100644 --- a/SUPPORT.md +++ b/SUPPORT.md @@ -617,6 +617,10 @@ Virtual Performance Management Unit for HVM guests Disabled by default (enable with hypervisor command line option). This feature is not security supported: see http://xenbits.xen.org/xsa/advisory-163.html +### Argo: Inter-domain message delivery by hypercall + + Status: Experimental + ### x86/PCI Device Passthrough Status, x86 PV: Supported, with caveats -- generated by git-patchbot for /home/xen/git/xen.git#staging --===============0183540876292673308== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============0183540876292673308==-- From xen-changelog-bounces@lists.xenproject.org Thu Feb 07 13:35:51 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 07 Feb 2019 13:35:51 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjqJ-0004Gt-OY; Thu, 07 Feb 2019 13:35:51 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjqI-0004Gm-NP for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:35:50 +0000 X-Inumbo-ID: 475bbd02-2add-11e9-8d67-6b216df13437 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 475bbd02-2add-11e9-8d67-6b216df13437; Thu, 07 Feb 2019 13:35:48 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1grjqG-0007ji-C1 for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:35:48 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1grjqG-00036a-9T for xen-changelog@lists.xenproject.org; Thu, 07 Feb 2019 13:35:48 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 07 Feb 2019 13:35:48 +0000 Subject: [Xen-changelog] [xen staging] docs, argo: add design document for Argo X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============7031020672055807295==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============7031020672055807295== Content-Type: text/plain commit 455301716e1ff358cb79367213003fba771dd466 Author: Christopher Clark AuthorDate: Wed Feb 6 09:56:00 2019 +0100 Commit: Jan Beulich CommitDate: Thu Feb 7 14:27:15 2019 +0100 docs, argo: add design document for Argo Document provides a brief introduction to the Argo interdomain communication mechanism and a detailed description of the granular locking used within the Argo implementation. Signed-off-by: Christopher Clark Reviewed-by: Roger Pau Monné Release-acked-by: Juergen Gross --- docs/designs/argo.pandoc | 448 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 448 insertions(+) diff --git a/docs/designs/argo.pandoc b/docs/designs/argo.pandoc new file mode 100644 index 0000000000..2ce253b654 --- /dev/null +++ b/docs/designs/argo.pandoc @@ -0,0 +1,448 @@ +# Argo + +## Introduction + +Argo is an interdomain communication mechanism. It provides Xen hypervisor +primitives to transmit data between VMs, by performing data copies into +receive memory rings registered by domains. It does not require memory +sharing between VMs and does not use the grant tables or Xenstore. + +Argo has requirements for performance isolation between domains, to prevent +negative performance impact from malicious or disruptive activity of other +domains, or even other VCPUs of the same domain operating other rings. + +## Hypervisor-Mediated data eXchange (HMX) + +This term references inter-VM communication protocols that have this +key architectural point: The hypervisor is responsible for performing the +write of data into the guest-accessible memory buffer, in the manner +according to the agreed transfer protocol. This structure ensures that +there is strength to the transport mechanism, because the transmitting side +of the communication is the hypervisor, which can be trusted by the receiver, +and the buffer is isolated from access by any other potential sources +outside the receiver. + +The receiver can trust that the hypervisor will: + +- Provide a protocol implementation adhering to hardware synchronization +requirements for concurrent access to system memory by communicating +components +- Deliver data only from an approved source, enforcing policy for Mandatory +Access Control. +- Indicate the correct sender of the data. +- Transmit only the intended data, adhering to the access protocol of the data +structure in the buffer. If the memory region is being used as a ring, then: + - Data writes will only occur within the ring region that is indicated as + available for incoming data by the ring indexes. + - The indicated length of data written will exactly match the length of + data actually written. + - The write for each piece of data will occur only once. + - Data will be written sequentially in the order that it is sent. +- Issue notification of data delivered correctly. + +This structure allows for augmentation by the hypervisor to identify the +sending entity within the source VM, and then provide the receiver with +assured context information about the data source. This enables the receiver +to make decisions based on fine-grained knowledge of the source of the data. + +This structure is also of strong interest for nested virtualization: +transport via the hypervisor can enable construction of efficient +communications between VMs at different levels of nesting. + +# Locking + +Since Argo operates a data path between domains, sections of this code are +*hot* when the communication paths are in use. To encourage high performance, a +goal is to limit mutual exclusion to only where required and enable significant +concurrency. + +Avoidance of deadlock is essential and since state must frequently be updated +that pertains to more than one domain, a locking protocol defines which locks +are needed and the order of their acquistion. + +## Structure + +The granular locking structure of Argo enables: + +1. Performance isolation of guests +2. Avoidance of DoS of rings by domains that are not authorized to send to them +3. Deadlock-free teardown of state across multiple domains on domain destroy +4. Performance of guests using Argo with concurrent operation of rings. + +Argo uses three per-domain locks to protect three separate data structures. +Access to the ring_hash data structure is confined to domains that a +ring-registering domain has authorized to send data via the ring. The complete +set of Argo locks is: + +* Global : `L1_global_argo_rwlock` +* Per-domain: `rings_L2_rwlock` +* Per-domain: `send_L2_lock` +* Per-domain: `wildcard_L2_lock` +* Per-ring: `L3_lock` + +## Protected State + +The data structures being protected by the locks are all per-domain. The only +global Argo state is the `L1_global_argo_rwlock` used to coordinate access to +data structures of other domains. + +### State: Rings registered and owned by a domain + +This includes the state to run that ring, such as memory frame numbers and +established mappings. Per-ring state is protected by its own lock, so that +multiple VCPUs of the same domain operating different rings do not inhibit the +performance of each other. + +The per-domain ring state also includes the list of pending notifications for +other domains that are waiting for ring space availability. + +### State: Partner rings for which this domain is the single allowed sender + +This state belonging to the permitted sender is written to when a ring is +registered by another domain. The lock that protects this state is subject to +locking at arbitrary frequency by those foreign domains when registering rings +-- which do not need any permission granted by this domain in order to register +a ring to communicate with it -- so it must not inhibit the domain's own +ability to use its own rings, to protect them from DoS. For this reason, this +state is protected by its own lock. + +### State: Pending notifications for wildcard rings registered by other domains + +This data structure is needed when a domain is destroyed, to cancel the +outstanding space availability notifications about the wildcard rings of other +domains that this domain has queried. + +Data is entered into this data structure by the domain that owns it, either by +a space-inhibited sendv or a notify operation. + +Data is removed from this data structure in one of three cases: when space +becomes available in the destination ring and the notification is sent, when +the ring is torn down, or when the awaiting domain is destroyed. + +In the case where a notification is sent, access to the data structure is +triggered by the ring owner domain, rather than the domain waiting for +notification. This data structure is protected by its own lock since doing so +entails less contention than the alternative of reusing an existing lock owned +by the domain. + +## Hierarchical Locking Model and Protocol + +The locking discipline within the Argo code is heirarchical and utilizes +reader/writer locks to enable increased concurrency when operations do not +conflict. None of the Argo locks are reentrant. + +The hierarchy: + +* There is a global rwlock (`L1`) to protect access to all of the per-domain +argo data structures. +* There is a rwlock per-domain (`rings_L2`) to protect the hashtable of the +per-ring data structures. +* There is a lock per ring (`L3`) to protect the per-ring data structure, +`struct argo_ring_info`. + +There are a two other per-domain L2 locks; their operation is similar and they +are described later. + +The protocol to safely acquire write access to the per-ring data structure, +`struct argo_ring_info`, is: + +1) Acquire a Read lock on L1. +2) Acquire a Read lock on L2. +3) Acquire L3. + +An alternative valid sequence is: + +1) Acquire a Read lock on L1. +2) Acquire a Write lock on L2. + +This second sequence grants write access to _all_ of the `argo_ring_info` +structs belonging to the domain, but at the expense of less concurrency: no +other operation can access those structs while the locks are held, which will +inhibit operations on those rings until the locks are released. + +Another alternative valid sequence is: + +1) Acquire a Write lock on L1. + +This grants write access to _all_ of the `argo_ring_info` structs belonging to +_all domains_, but again at the expense of far less concurrency: no other +operation can operate on Argo rings until the locks are released. + +## Lock Definitions + +The full set of locks that are directly operated upon by the Argo code are +described in the following section. + +### The global singleton lock: + +* `L1_global_argo_rwlock` + +The rationale for having a global lock is to be able to enforce system-wide +exclusion for a critical region and simplify the logic required to avoid +deadlock, for teardown of state across multiple domains when a domain is +destroyed. + +The majority of operations take a read-lock on this lock, allowing concurrent +Argo operations by many domains. + +The pointer d->argo on every domain is protected by this lock. A set of more +granular per-domain locks could be used to do that, but since domain start and +stop is expected to be a far less frequent operation than the other argo +operations, acquiring a single read lock to enable access to all the argo +structs of all domains simplifies the protocol. + +Points of write-locking on this lock: + +* `argo_destroy`, where: + * All of the domain's own rings are destroyed. + * All of the notifications pending for other domains are cancelled. + * All of the unicast partner rings owned by other domains for this domain to +send to, are destroyed. + * All of the notifications pending on those rings are cancelled. + * All of the notifications pending for this domain on wildcard rings owned +by other domains are cancelled. +* `argo_soft_reset`, for similar teardown operations as argo_destroy. +* `argo_init`, where the `d->argo` pointer is first populated. + * Since the write lock is taken here, there is serialization all concurrent +Argo operations around this single pointer write; this is the cost of using the +simpler one global lock approach. + +Enforcing that the write_lock is acquired on `L1_global_argo_rwlock` before +executing teardown, ensures that no teardown operations act concurrently and no +other Argo operations happen concurrently with a teardown. The teardown logic +is free to safely modify the Argo state across all domains without having to +acquire per-domain locks and deadlock cannot occur. + +### Per-Domain: Ring hash lock + +`rings_L2_rwlock` + +Protects: the per-domain ring hash table of `argo_ring_info` structs. + +Holding a read lock on `rings_L2` protects the ring hash table and the elements +in the hash table `d->argo->ring_hash`, and the `node` and `id` fields in +struct `argo_ring_info` in the hash table. + +Holding a write lock on `rings_L2` protects all of the elements of all the +struct `argo_ring_info` belonging to this domain. + +To take `rings_L2` you must already have `R(L1)`. `W(L1)` implies `W(rings_L2)` +and `L3`. + +Prerequisites: + +* `R(L1_global_argo_rwlock)` must be acquired before taking either read or +write on `rings_L2_rwlock`. +* `W(L1_global_argo_rwlock)` implies `W(rings_L2_rwlock)`, so if +`W(L1_global_argo_rwlock)` is held, then `rings_L2_rwlock` does not need to be +acquired, and all the data structures that `rings_L2_rwlock` protects can be +accessed as if `W(ring_L2_rwlock)` was held. + +Is accessed by the hypervisor on behalf of: + +* The domain that registered the ring. +* Any domain that is allowed to send to the ring -- so that's the partner +domain, for unicast rings, or any domain, for wildcard rings. + +### Send hash lock + +`send_L2_lock` + +Protects: the per-domain send hash table of `argo_send_info` structs. + +Is accessed by the hypervisor on behalf of: + +* Any domain that registers a ring that specifies the domain as the unicast +sender. +* The domain that has been allowed to send, as part of teardown when the domain +is being destroyed. + + +### Wildcard pending list lock + +`wildcard_L2_lock` + +Protects: the per-domain list of pending notifications to the domain from +wildcard rings owned by other domains. + +Is accessed by the hypervisor on behalf of: + +* The domain that issued a query to another about space availability in one of +its wildcard rings - this can be done by attempting a send operation when there +is insufficient ring space available at the time. +* Any domain that the domain has issued a query to about space availability in +one of their wildcard rings. + +### Per-Ring locks: + +* `L3_lock` + +This lock protects the members of a `struct ring_info` which is the primary +state for a domain's own registered ring. + + +## Reasoning Model + +A common model for reasoning about concurrent code focusses on accesses to +individual variables: if code touches this variable, see that it first acquires +the corresponding lock and then drops it afterwards. A challenge with this +model is in ensuring that the sequence of locks acquired within nested +functions, when operating on data from multiple domains with concurrent +operations, is safe from deadlock. + +An alternative method that is better suited to the Argo software is to consider +the execution path, the full sequence of locks acquired, accesses performed, +and locks released, from entering an operation, to the completion of the work. + +An example code path for an operation: + +`[entry] > -- [ take R(L1) ] -- [ take R(L2) ] -- loop [ take a L3 / drop L3 ] +-- [ drop R(L2) ] -- [ drop R(L1)] -- > [exit]` + +If a function implements a section of the path, it is important to know not +only what variables the function itself operates upon, but also the locking +state that will already have been established at the point when the function is +invoked, since this will affect what data the function can access. For this +reason, comments in the code, or ASSERTs that explicitly check lock state, +communicate what the locking state is expected and intended to be when that +code is invoked. See the macros defined to support this for Argo later in this +document. + + +## Macros to Validate and Document Lock State + +These macros encode the logic to verify that the locking has adhered to the +locking discipline. + +eg. On entry to logic that requires holding at least `R(rings_L2)`, this: + +`ASSERT(LOCKING_Read_rings_L2(d));` + +checks that the lock state is sufficient, validating that one of the following +must be true when executed: + +`R(rings_L2) && R(L1)` +or: `W(rings_L2) && R(L1)` +or: `W(L1)` + +The macros are defined thus: + +``` +#define LOCKING_Write_L1 (rw_is_write_locked(&L1_global_argo_rwlock)) +/* + * While LOCKING_Read_L1 will return true even if the lock is write-locked, + * that's OK because everywhere that a Read lock is needed with these macros, + * holding a Write lock there instead is OK too: we're checking that _at least_ + * the specified level of locks are held. + */ +#define LOCKING_Read_L1 (rw_is_locked(&L1_global_argo_rwlock)) + +#define LOCKING_Write_rings_L2(d) \ + ((LOCKING_Read_L1 && rw_is_write_locked(&(d)->argo->rings_L2_rwlock)) || \ + LOCKING_Write_L1) +/* + * Skip checking LOCKING_Write_rings_L2(d) within this LOCKING_Read_rings_L2 + * definition because the first clause that is testing R(L1) && R(L2) will also + * return true if R(L1) && W(L2) is true, because of the way that rw_is_locked + * behaves. This results in a slightly shorter and faster implementation. + */ +#define LOCKING_Read_rings_L2(d) \ + ((LOCKING_Read_L1 && rw_is_locked(&(d)->argo->rings_L2_rwlock)) || \ + LOCKING_Write_L1) +/* + * Skip checking LOCKING_Write_L1 within this LOCKING_L3 definition because + * LOCKING_Write_rings_L2(d) will return true for that condition. + */ +#define LOCKING_L3(d, r) \ + ((LOCKING_Read_L1 && rw_is_locked(&(d)->argo->rings_L2_rwlock) \ + && spin_is_locked(&(r)->L3_lock)) || LOCKING_Write_rings_L2(d)) + +#define LOCKING_send_L2(d) \ + ((LOCKING_Read_L1 && spin_is_locked(&(d)->argo->send_L2_lock)) || \ + LOCKING_Write_L1) +``` + +Here is an example of a macro in use: + +``` +static void +notify_ring(const struct domain *d, struct argo_ring_info *ring_info, + struct hlist_head *to_notify) +{ + uint32_t space; + + ASSERT(LOCKING_Read_rings_L2(d)); + + spin_lock(&ring_info->L3_lock); + + if ( ring_info->len ) + space = ringbuf_payload_space(d, ring_info); + else + space = 0; + + spin_unlock(&ring_info->L3_lock); + + if ( space ) + pending_find(d, ring_info, space, to_notify); +} + +``` + +In the above example, it can be seen that it is safe to acquire the `L3` lock +because _at least_ `R(rings_L2)` is already held, as documented and verified by +the macro. + +## FAQ / Other Considerations + +### Why not have a single per-domain lock? + +Due to performance isolation / DoS avoidance: if there is a single per-domain +lock, acquiring this lock will stall operations on other active rings owned by +the domain. A malicious domain can loop registering and unregistering rings, +without any consent by the targetted domain, which would experience decreased +throughput due to the contention on the single per-domain lock. The granular +locking structure of Argo prevents this. It also allows concurrent operation of +different rings by multiple VCPUs of the same domain without contention, to +avoid negative application performance interaction. + +## Rationale for Using a Singleton Global Lock: L1 + +### Teardown on domain destroy + +The single global lock enables exclusive access to the argo data structures +across domains when a domain is destroyed. Every unicast ring that the dying +domain is the authorized sender is torn down and any pending space-available +notifications in other domain's wildcard rings are cancelled. This requires +gaining safe access to the data structures on each of the domains involved. + +The 'send hashtable' data structure is needed in order to perform the teardown +of rings when a domain is destroyed. To populate it, whenever a unicast ring is +registered, the lock that protects that data structure must be taken +exclusively. + +There are granular per-domain locks which protect the per-domain data +structures. The global singleton L1 lock operates with-and-above the per-domain +locks and is used to obtain exclusive access to multiple domain's argo data +structures in the infrequent case where it is used -- for domain destroy -- +whilst otherwise allowing concurrent access, via acquiring it with 'read' +access, for the majority of the time. + +To perform the required state teardown on domain destruction, which can require +removing state from the data structures of multiple domains, a locking protocol +to obtain mutual exclusion and safe access to the state is required, without +deadlocking. + +Using the single global lock avoids the need for sequencing the acquisition of +multiple individual per-domain locks (and lower level data structure locks) to +prevent deadlock: taking W(L1) grants access to all and taking R(L1) ensures +that teardown of any domain will not interfere with any Argo hypercall +operation. It enables introducing granular locking without complex or +error-prone lock acquisition logic. + +# Future Work + +- Performance measurement and optimization +- Provide assurance of connection source context to destination +- Policy controls for reducing the duration of hypervisor mappings of +transmission rings, to improve resistance to data read attacks on +hypervisor memory -- generated by git-patchbot for /home/xen/git/xen.git#staging --===============7031020672055807295== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============7031020672055807295==-- From xen-changelog-bounces@lists.xenproject.org Thu Feb 07 17:22:12 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 07 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"Xen-changelog" Y29tbWl0IDdiNTI3OGIyOGY4ZmJjZDQ0MDJlNDUyMGQ3YTVkNjA3ZDRhOTk3YTcKQXV0aG9yOiAg ICAgSWFuIEphY2tzb24gPGlhbi5qYWNrc29uQGV1LmNpdHJpeC5jb20+CkF1dGhvckRhdGU6IFRo dSBGZWIgNyAxNTowMjoyNyAyMDE5ICswMDAwCkNvbW1pdDogICAgIFdlaSBMaXUgPHdlaS5saXUy QGNpdHJpeC5jb20+CkNvbW1pdERhdGU6IFRodSBGZWIgNyAxODo0NDozNiAyMDE5ICswMDAwCgog ICAgdG9vbHM6IGluaXQgc2NyaXB0czogbWFrZSBYRU5fUlVOX0RJUiBhbmQgWEVOX0xPQ0tfRElS IG1vZGUgNzAwCiAgICAKICAgIFRoZXNlIGRpcmVjdG9yaWVzIG91Z2h0IG5vdCB0byBiZSBldmVu IHdvcmxkLXJlYWRhYmxlLiAgSWYgdGhpcyBzY3JpcHQKICAgIGZvciBzb21lIHJlYXNvbiBydW5z IHdpdGggYSBsYXggdW1hc2sgdGhleSBtaWdodCBiZSBjcmVhdGVkCiAgICBvdmVybHktd3JpdGVh YmxlLiAgQXZvaWQgYW55IHN1Y2ggYnVnIGJ5IHNldHRpbmcgdGhlIG1vZGUgZXhwbGljaXRseS4K ICAgIAogICAgU2lnbmVkLW9mZi1ieTogSWFuIEphY2tzb24gPGlhbi5qYWNrc29uQGV1LmNpdHJp eC5jb20+CiAgICBBY2tlZC1ieTogV2VpIExpdSA8d2VpLmxpdTJAY2l0cml4LmNvbT4KICAgIFJl bGVhc2UtYWNrZWQtYnk6IEp1ZXJnZW4gR3Jvc3MgPGpncm9zc0BzdXNlLmNvbT4KLS0tCiB0b29s 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mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gs4Zh-0006Q9-Bh for xen-changelog@lists.xenproject.org; Fri, 08 Feb 2019 11:44:05 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gs4Zh-0004eA-8o for xen-changelog@lists.xenproject.org; Fri, 08 Feb 2019 11:44:05 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 08 Feb 2019 11:44:05 +0000 Subject: [Xen-changelog] [xen staging] docs: Update credit/credit2 feature docs reflecting new default scheduler X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" 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xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gs4Zr-0006QH-I8 for xen-changelog@lists.xenproject.org; Fri, 08 Feb 2019 11:44:15 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gs4Zr-0004ei-FQ for xen-changelog@lists.xenproject.org; Fri, 08 Feb 2019 11:44:15 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 08 Feb 2019 11:44:15 +0000 Subject: [Xen-changelog] [xen staging] docs: features/qemu-depriv formatting fixes X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" 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archives@lists.xen.org Delivery-date: Mon, 11 Feb 2019 08:11:08 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gt6gE-0005b2-ME; Mon, 11 Feb 2019 08:11:06 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gt6gE-0005ax-3d for xen-changelog@lists.xenproject.org; Mon, 11 Feb 2019 08:11:06 +0000 X-Inumbo-ID: 93dd9e45-2dd4-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 93dd9e45-2dd4-11e9-bc90-bc764e045a96; Mon, 11 Feb 2019 08:11:05 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gt6gC-0002ms-NJ for xen-changelog@lists.xenproject.org; Mon, 11 Feb 2019 08:11:04 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gt6gC-0008Vc-Ka for xen-changelog@lists.xenproject.org; Mon, 11 Feb 2019 08:11:04 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 11 Feb 2019 08:11:04 +0000 Subject: [Xen-changelog] [xen staging] x86/shadow: adjust minimum allocation calculations X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============8020876989676773954==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============8020876989676773954== Content-Type: text/plain commit d04bf1eb656be8b2131d08c7e32cff343556cfa8 Author: Jan Beulich AuthorDate: Mon Feb 11 09:09:13 2019 +0100 Commit: Jan Beulich CommitDate: Mon Feb 11 09:09:13 2019 +0100 x86/shadow: adjust minimum allocation calculations A previously bad situation has become worse with the early setting of ->max_vcpus: The value returned by shadow_min_acceptable_pages() has further grown, and hence now holds back even more memory from use for the p2m. Make sh_min_allocation() account for all p2m memory needed for shadow_enable() to succeed during domain creation (at which point the domain has no memory at all allocated to it yet, and hence use of d->tot_pages is meaningless). Also make shadow_min_acceptable_pages() no longer needlessly add 1 to the vCPU count. Finally make the debugging printk() in shadow_alloc_p2m_page() a little more useful by logging some of the relevant domain settings. Reported-by: Roger Pau Monné Signed-off-by: Jan Beulich Reviewed-by: Roger Pau Monné Acked-by: George Dunlap Acked-by: Tim Deegan Release-acked-by: Juergen Gross --- xen/arch/x86/mm/shadow/common.c | 24 ++++++++++++++++-------- 1 file changed, 16 insertions(+), 8 deletions(-) diff --git a/xen/arch/x86/mm/shadow/common.c b/xen/arch/x86/mm/shadow/common.c index c49aeb5e60..07840ff727 100644 --- a/xen/arch/x86/mm/shadow/common.c +++ b/xen/arch/x86/mm/shadow/common.c @@ -966,7 +966,8 @@ const u8 sh_type_to_size[] = { 1 /* SH_type_oos_snapshot */ }; -/* Figure out the least acceptable quantity of shadow memory. +/* + * Figure out the least acceptable quantity of shadow memory. * The minimum memory requirement for always being able to free up a * chunk of memory is very small -- only three max-order chunks per * vcpu to hold the top level shadows and pages with Xen mappings in them. @@ -975,11 +976,11 @@ const u8 sh_type_to_size[] = { * instruction, we must be able to map a large number (about thirty) VAs * at the same time, which means that to guarantee progress, we must * allow for more than ninety allocated pages per vcpu. We round that - * up to 128 pages, or half a megabyte per vcpu, and add 1 more vcpu's - * worth to make sure we never return zero. */ + * up to 128 pages, or half a megabyte per vcpu. + */ static unsigned int shadow_min_acceptable_pages(const struct domain *d) { - return (d->max_vcpus + 1) * 128; + return d->max_vcpus * 128; } /* Dispatcher function: call the per-mode function that will unhook the @@ -1322,8 +1323,11 @@ shadow_alloc_p2m_page(struct domain *d) if ( !d->arch.paging.p2m_alloc_failed ) { d->arch.paging.p2m_alloc_failed = 1; - dprintk(XENLOG_ERR, "d%i failed to allocate from shadow pool\n", - d->domain_id); + dprintk(XENLOG_ERR, + "d%d failed to allocate from shadow pool (tot=%u p2m=%u min=%u)\n", + d->domain_id, d->arch.paging.shadow.total_pages, + d->arch.paging.shadow.p2m_pages, + shadow_min_acceptable_pages(d)); } paging_unlock(d); return NULL; @@ -1373,9 +1377,13 @@ static unsigned int sh_min_allocation(const struct domain *d) { /* * Don't allocate less than the minimum acceptable, plus one page per - * megabyte of RAM (for the p2m table). + * megabyte of RAM (for the p2m table, minimally enough for HVM's setting + * up of slot zero and an LAPIC page), plus one for HVM's 1-to-1 pagetable. */ - return shadow_min_acceptable_pages(d) + (d->tot_pages / 256); + return shadow_min_acceptable_pages(d) + + max(d->tot_pages / 256, + is_hvm_domain(d) ? CONFIG_PAGING_LEVELS + 2 : 0U) + + is_hvm_domain(d); } int shadow_set_allocation(struct domain *d, unsigned int pages, bool *preempted) -- generated by git-patchbot for /home/xen/git/xen.git#staging --===============8020876989676773954== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============8020876989676773954==-- From xen-changelog-bounces@lists.xenproject.org Mon Feb 11 13:11:13 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 11 Feb 2019 13:11:13 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gtBMd-0005Ju-KM; Mon, 11 Feb 2019 13:11:11 +0000 Received: from all-amaz-eas1.inumbo.com 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Mon, 11 Feb 2019 13:11:15 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gtBMh-0004gJ-Av for xen-changelog@lists.xenproject.org; Mon, 11 Feb 2019 13:11:15 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 11 Feb 2019 13:11:15 +0000 Subject: [Xen-changelog] [xen staging-4.9] update Xen version to 4.9.4 X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGY1YWNmOTdmNjY5YzZiYzk2OTFlMDM3NzFhZDA2NzAzZGE3N2UwZDUKQXV0aG9yOiAg ICAgSmFuIEJldWxpY2ggPGpiZXVsaWNoQHN1c2UuY29tPgpBdXRob3JEYXRlOiBNb24gRmViIDEx 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a76ee066-2eb4-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id a76ee066-2eb4-11e9-bc90-bc764e045a96; Tue, 12 Feb 2019 10:55:05 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gtViS-0008Rn-OD for xen-changelog@lists.xenproject.org; Tue, 12 Feb 2019 10:55:04 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gtViS-0007J2-Lc for xen-changelog@lists.xenproject.org; Tue, 12 Feb 2019 10:55:04 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Tue, 12 Feb 2019 10:55:04 +0000 Subject: [Xen-changelog] [xen staging] asm: handle comments when creating header file X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: 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xen-changelog@lists.xenproject.org; Tue, 12 Feb 2019 11:00:04 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gtVnI-0007aY-FD for xen-changelog@lists.xenproject.org; Tue, 12 Feb 2019 11:00:04 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Tue, 12 Feb 2019 11:00:04 +0000 Subject: [Xen-changelog] [xen staging] iommu: fix iommu_ops initialization X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDg4YjkyYzM4MjBjZmZlZDRiNGFiZWIxMzllZGMyY2JkODI4NmNiMTIKQXV0aG9yOiAg 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+0000 X-Inumbo-ID: 602901bb-2eb5-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 602901bb-2eb5-11e9-bc90-bc764e045a96; Tue, 12 Feb 2019 11:00:15 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gtVnS-00008T-O0 for xen-changelog@lists.xenproject.org; Tue, 12 Feb 2019 11:00:14 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gtVnS-0007bP-LO for xen-changelog@lists.xenproject.org; Tue, 12 Feb 2019 11:00:14 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Tue, 12 Feb 2019 11:00:14 +0000 Subject: [Xen-changelog] [xen staging] VMX: don't ignore P2M setup error X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: 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[Xen-changelog] [xen staging] x86/hvm: block speculative out-of-bound accesses X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGYxNzhhMDBjMzAxNzNjMGIyNjhkOTkxNjBlMTlhZDI5OWIxODIzYTIKQXV0aG9yOiAg ICAgTm9yYmVydCBNYW50aGV5IDxubWFudGhleUBhbWF6b24uZGU+CkF1dGhvckRhdGU6IFR1ZSBG ZWIgMTIgMTU6MjA6MTUgMjAxOSArMDEwMApDb21taXQ6ICAgICBKYW4gQmV1bGljaCA8amJldWxp Y2hAc3VzZS5jb20+CkNvbW1pdERhdGU6IFR1ZSBGZWIgMTIgMTU6MjA6MTUgMjAxOSArMDEwMAoK ICAgIHg4Ni9odm06IGJsb2NrIHNwZWN1bGF0aXZlIG91dC1vZi1ib3VuZCBhY2Nlc3NlcwogICAg CiAgICBUaGVyZSBhcmUgbXVsdGlwbGUgYXJyYXlzIGluIHRoZSBIVk0gaW50ZXJmYWNlIHRoYXQg 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2019 13:44:04 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 15 Feb 2019 13:44:04 +0000 Subject: [Xen-changelog] [xen staging] tools/libxendevicemodel: add xendevicemodel_modified_memory_bulk to map X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDM2NWFhYmI2ZTUwMjNjZWU0NzZhZGY4MTEwNjcyOWVmZDQ5YzY0NGYKQXV0aG9yOiAg ICAgUGF1bCBEdXJyYW50IDxwYXVsLmR1cnJhbnRAY2l0cml4LmNvbT4KQXV0aG9yRGF0ZTogRnJp IEZlYiAxNSAxMDowMjowMCAyMDE5ICswMDAwCkNvbW1pdDogICAgIFdlaSBMaXUgPHdlaS5saXUy QGNpdHJpeC5jb20+CkNvbW1pdERhdGU6IEZyaSBGZWIgMTUgMTM6NDI6MDUgMjAxOSArMDAwMAoK 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xen-changelog-bounces@lists.xenproject.org Mon Feb 18 10:44:15 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 18 Feb 2019 10:44:15 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgPH-0004Wr-2X; Mon, 18 Feb 2019 10:44:15 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgPF-0004Wd-SA for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:44:13 +0000 X-Inumbo-ID: 21238a0b-336a-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 21238a0b-336a-11e9-bc90-bc764e045a96; Mon, 18 Feb 2019 10:44:13 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgPE-000313-Ig for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:44:12 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gvgPE-0003M1-Fs for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:44:12 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 10:44:12 +0000 Subject: [Xen-changelog] [xen master] xen/arm: irq: End cleanly spurious interrupt X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDhhYTI3NjIzNWI5M2VlYjRmODEwOTVjNjM4OTcwOTAwZTE5YjMxZTUKQXV0aG9yOiAg ICAgSnVsaWVuIEdyYWxsIDxqdWxpZW4uZ3JhbGxAYXJtLmNvbT4KQXV0aG9yRGF0ZTogTW9uIEph 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patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 10:44:22 +0000 Subject: [Xen-changelog] [xen master] tools: drop obsolete xen-ringwatch X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDZiNmZmMDdmYmQ5ZWMxNzVmZmZmODZkMWY1MmZhYzYxZTg3ZTJlNTgKQXV0aG9yOiAg ICAgV2VpIExpdSA8d2VpLmxpdTJAY2l0cml4LmNvbT4KQXV0aG9yRGF0ZTogTW9uIEZlYiA0IDEz OjU4OjI0IDIwMTkgKzAwMDAKQ29tbWl0OiAgICAgV2VpIExpdSA8d2VpLmxpdTJAY2l0cml4LmNv bT4KQ29tbWl0RGF0ZTogV2VkIEZlYiA2IDEyOjA0OjI2IDIwMTkgKzAwMDAKCiAgICB0b29sczog ZHJvcCBvYnNvbGV0ZSB4ZW4tcmluZ3dhdGNoCiAgICAKICAgIFRoaXMgdXRpbGl0eSBjYW4ndCBw 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10:44:35 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgPZ-0004aS-UW for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:44:33 +0000 X-Inumbo-ID: 2d4cb3a0-336a-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 2d4cb3a0-336a-11e9-bc90-bc764e045a96; Mon, 18 Feb 2019 10:44:33 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgPY-00031M-Vt for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:44:32 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gvgPY-0003NW-Sl for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:44:32 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 10:44:32 +0000 Subject: [Xen-changelog] [xen master] arm: gic-v3: deactivate interrupts during initialization X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDAzMjJlMGRiNWIyOWEwZDFjZTRiNDUyODg1ZTM0MDIzZTNhNGIwMGUKQXV0aG9yOiAg ICAgUGVuZyBGYW4gPHBlbmcuZmFuQG54cC5jb20+CkF1dGhvckRhdGU6IFR1ZSBGZWIgNSAwNTo1 NTozNSAyMDE5ICswMDAwCkNvbW1pdDogICAgIFN0ZWZhbm8gU3RhYmVsbGluaSA8c3N0YWJlbGxp bmlAa2VybmVsLm9yZz4KQ29tbWl0RGF0ZTogV2VkIEZlYiA2IDExOjIwOjQxIDIwMTkgLTA4MDAK CiAgICBhcm06IGdpYy12MzogZGVhY3RpdmF0ZSBpbnRlcnJ1cHRzIGR1cmluZyBpbml0aWFsaXph dGlvbgogICAgCiAgICBPbiBpLk1YOCwgd2UgaW1wbGVtZW50ZWQgcGFydGl0aW9uIHJlYm9vdCB3 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Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgPm-0004cs-Uf for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:44:46 +0000 X-Inumbo-ID: 33600386-336a-11e9-9496-1be61cd8c98d Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 33600386-336a-11e9-9496-1be61cd8c98d; Mon, 18 Feb 2019 10:44:43 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgPj-00031Y-5z for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:44:43 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gvgPj-0003O4-3E for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:44:43 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 10:44:43 +0000 Subject: [Xen-changelog] [xen master] argo: Introduce the Kconfig option to govern inclusion of Argo X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDZhZmRkNTcwMDJkYzFjMWQ3MGFkYmI5MDA0M2I0NGI4ZGZlYzdjY2MKQXV0aG9yOiAg ICAgQ2hyaXN0b3BoZXIgQ2xhcmsgPGNocmlzdG9waGVyLncuY2xhcmtAZ21haWwuY29tPgpBdXRo b3JEYXRlOiBXZWQgRmViIDYgMDk6NTU6MDAgMjAxOSArMDEwMApDb21taXQ6ICAgICBKYW4gQmV1 bGljaCA8amJldWxpY2hAc3VzZS5jb20+CkNvbW1pdERhdGU6IFRodSBGZWIgNyAxNDoxODoyMSAy MDE5ICswMTAwCgogICAgYXJnbzogSW50cm9kdWNlIHRoZSBLY29uZmlnIG9wdGlvbiB0byBnb3Zl cm4gaW5jbHVzaW9uIG9mIEFyZ28KICAgIAogICAgRGVmaW5lcyBDT05GSUdfQVJHTyB3aGVuIGVu 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1gvgPu-0004ey-UW for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:44:54 +0000 X-Inumbo-ID: 39770bfe-336a-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 39770bfe-336a-11e9-bc90-bc764e045a96; Mon, 18 Feb 2019 10:44:53 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgPt-00031h-CV for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:44:53 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gvgPt-0003P3-9q for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:44:53 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 10:44:53 +0000 Subject: [Xen-changelog] [xen master] argo: introduce the argo_op hypercall boilerplate X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDFkZGMwZDQzYzIwY2IxYzExMjVkNGQ2Y2VmYzc4NjI0YjJhOWNjYjcKQXV0aG9yOiAg ICAgQ2hyaXN0b3BoZXIgQ2xhcmsgPGNocmlzdG9waGVyLncuY2xhcmtAZ21haWwuY29tPgpBdXRo b3JEYXRlOiBXZWQgRmViIDYgMDk6NTU6MDAgMjAxOSArMDEwMApDb21taXQ6ICAgICBKYW4gQmV1 bGljaCA8amJldWxpY2hAc3VzZS5jb20+CkNvbW1pdERhdGU6IFRodSBGZWIgNyAxNDoxOTozOSAy MDE5ICswMTAwCgogICAgYXJnbzogaW50cm9kdWNlIHRoZSBhcmdvX29wIGh5cGVyY2FsbCBib2ls ZXJwbGF0ZQogICAgCiAgICBQcmVzZW5jZSBpcyBnYXRlZCB1cG9uIENPTkZJR19BUkdPLgogICAg CiAgICBSZWdpc3RlcnMgdGhlIGh5cGVyY2FsbCBwcmV2aW91c2x5IHJlc2VydmVkIGZvciB0aGlz LgogICAgVGFrZXMgNSBhcmd1bWVudHMsIGRvZXMgbm90aGluZyBhbmQgcmV0dXJucyAtRU5PU1lT 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helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgQ7-0004hZ-Op for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:45:07 +0000 X-Inumbo-ID: 3f87ae34-336a-11e9-a07b-e3bb42d472aa Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 3f87ae34-336a-11e9-a07b-e3bb42d472aa; Mon, 18 Feb 2019 10:45:03 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgQ3-00032H-Ie for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:45:03 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gvgQ3-0003Pq-G6 for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:45:03 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 10:45:03 +0000 Subject: [Xen-changelog] [xen master] argo: define argo_dprintk for subsystem debugging X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============9035327548029737317==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============9035327548029737317== Content-Type: text/plain commit c452c85f6fe6ad09c0b46b77c45216863f12c5b4 Author: Christopher Clark AuthorDate: Wed Feb 6 09:55:00 2019 +0100 Commit: Jan Beulich CommitDate: Thu Feb 7 14:20:38 2019 +0100 argo: define argo_dprintk for subsystem debugging A convenience for working on development of the argo subsystem: setting a #define variable enables additional debug messages. Signed-off-by: Christopher Clark Acked-by: Jan Beulich Reviewed-by: Roger Pau Monné --- xen/common/argo.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/xen/common/argo.c b/xen/common/argo.c index dd2390d3f3..ada1aaf937 100644 --- a/xen/common/argo.c +++ b/xen/common/argo.c @@ -19,6 +19,15 @@ #include #include +/* Change this to #define ARGO_DEBUG here to enable more debug messages */ +#undef ARGO_DEBUG + +#ifdef ARGO_DEBUG +#define argo_dprintk(format, args...) printk("argo: " format, ## args ) +#else +#define argo_dprintk(format, ... ) ((void)0) +#endif + long do_argo_op(unsigned int cmd, XEN_GUEST_HANDLE_PARAM(void) arg1, XEN_GUEST_HANDLE_PARAM(void) arg2, unsigned long raw_arg3, -- generated by git-patchbot for /home/xen/git/xen.git#master --===============9035327548029737317== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============9035327548029737317==-- From xen-changelog-bounces@lists.xenproject.org Mon Feb 18 10:45:17 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 18 Feb 2019 10:45:17 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgQH-0004jE-Ey; Mon, 18 Feb 2019 10:45:17 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgQG-0004j1-8b for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:45:16 +0000 X-Inumbo-ID: 459da727-336a-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 459da727-336a-11e9-bc90-bc764e045a96; Mon, 18 Feb 2019 10:45:14 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgQD-00032r-PC for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:45:13 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gvgQD-0003QJ-Mc for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:45:13 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 10:45:13 +0000 Subject: [Xen-changelog] [xen master] argo: init, destroy and soft-reset, with enable command line opt X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============5999176361060951549==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============5999176361060951549== Content-Type: text/plain commit 82a817307c5b12035555de05035185cc9e03c2b5 Author: Christopher Clark AuthorDate: Wed Feb 6 09:55:00 2019 +0100 Commit: Jan Beulich CommitDate: Thu Feb 7 14:20:50 2019 +0100 argo: init, destroy and soft-reset, with enable command line opt Initialises basic data structures and performs teardown of argo state for domain shutdown. Inclusion of the Argo implementation is dependent on CONFIG_ARGO. Introduces a new Xen command line parameter 'argo': bool to enable/disable the argo hypercall. Defaults to disabled. New headers: public/argo.h: with definions of addresses and ring structure, including indexes for atomic update for communication between domain and hypervisor. xen/argo.h: to expose the hooks for integration into domain lifecycle: argo_init: per-domain init of argo data structures for domain_create. argo_destroy: teardown for domain_destroy and the error exit path of domain_create. argo_soft_reset: reset of domain state for domain_soft_reset. Adds a new field to struct domain: struct argo_domain *argo; In accordance with recent work on _domain_destroy, argo_destroy is idempotent. It will tear down: all rings registered by this domain, all rings where this domain is the single sender (ie. specified partner, non-wildcard rings), and all pending notifications where this domain is awaiting signal about available space in the rings of other domains. A count will be maintained of the number of rings that a domain has registered in order to limit it below the fixed maximum limit defined here. Macros are defined to verify the internal locking state within the argo implementation. The macros are ASSERTed on entry to functions to validate and document the required lock state prior to calling. The hash function for the hashtables that hold ring state is derived from the string hashing function djb2 (http://www.cse.yorku.ca/~oz/hash.html) by Daniel J. Bernstein. Basic testing with a limited number of domains and ports has shown reasonable distribution for the table size. The software license on the public header is the BSD license, standard procedure for the public Xen headers. The public header was originally posted under a GPL license at: [1]: https://lists.xenproject.org/archives/html/xen-devel/2013-05/msg02710.html The following ACK by Lars Kurth is to confirm that only people being employees of Citrix contributed to the header files in the series posted at [1] and that thus the copyright of the files in question is fully owned by Citrix. The ACK also confirms that Citrix is happy for the header files to be published under a BSD license in this series (which is based on [1]). Signed-off-by: Christopher Clark Acked-by: Lars Kurth Reviewed-by: Ross Philipson Tested-by: Chris Patterson Reviewed-by: Roger Pau Monné Release-acked-by: Juergen Gross --- docs/misc/xen-command-line.pandoc | 13 + xen/common/argo.c | 624 +++++++++++++++++++++++++++++++++++++- xen/common/domain.c | 9 + xen/include/Makefile | 1 + xen/include/public/argo.h | 64 ++++ xen/include/xen/argo.h | 44 +++ xen/include/xen/sched.h | 5 + xen/include/xlat.lst | 2 + 8 files changed, 760 insertions(+), 2 deletions(-) diff --git a/docs/misc/xen-command-line.pandoc b/docs/misc/xen-command-line.pandoc index 6a3377519b..605c544bd3 100644 --- a/docs/misc/xen-command-line.pandoc +++ b/docs/misc/xen-command-line.pandoc @@ -182,6 +182,19 @@ Permit Xen to use "Always Running APIC Timer" support on compatible hardware in combination with cpuidle. This option is only expected to be useful for developers wishing Xen to fall back to older timing methods on newer hardware. +### argo + = List of [ ] + +Controls for the Argo hypervisor-mediated interdomain communication service. + +The functionality that this option controls is only available when Xen has been +compiled with the build setting for Argo enabled in the build configuration. + +Argo is a interdomain communication mechanism, where Xen acts as the central +point of authority. Guests may register memory rings to recieve messages, +query the status of other domains, and send messages by hypercall, all subject +to appropriate auditing by Xen. Argo is disabled by default. + ### asid (x86) > `= ` diff --git a/xen/common/argo.c b/xen/common/argo.c index ada1aaf937..f1626ca520 100644 --- a/xen/common/argo.c +++ b/xen/common/argo.c @@ -16,8 +16,261 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ +#include +#include +#include #include +#include #include +#include +#include +#include + +#include + +#ifdef CONFIG_COMPAT +#include +CHECK_argo_addr; +CHECK_argo_ring; +#endif + +DEFINE_XEN_GUEST_HANDLE(xen_argo_addr_t); +DEFINE_XEN_GUEST_HANDLE(xen_argo_ring_t); + +static bool __read_mostly opt_argo; + +static int __init parse_argo(const char *s) +{ + const char *ss; + int val, rc = 0; + + do { + ss = strchr(s, ','); + if ( !ss ) + ss = strchr(s, '\0'); + + if ( (val = parse_bool(s, ss)) >= 0 ) + opt_argo = val; + else + rc = -EINVAL; + + s = ss + 1; + } while ( *ss ); + + return rc; +} +custom_param("argo", parse_argo); + +typedef struct argo_ring_id +{ + xen_argo_port_t aport; + domid_t partner_id; + domid_t domain_id; +} argo_ring_id; + +/* Data about a domain's own ring that it has registered */ +struct argo_ring_info +{ + /* next node in the hash, protected by rings_L2 */ + struct list_head node; + /* this ring's id, protected by rings_L2 */ + struct argo_ring_id id; + /* L3, the ring_info lock: protects the members of this struct below */ + spinlock_t L3_lock; + /* length of the ring, protected by L3 */ + unsigned int len; + /* number of pages translated into mfns, protected by L3 */ + unsigned int nmfns; + /* cached tx pointer location, protected by L3 */ + unsigned int tx_ptr; + /* mapped ring pages protected by L3 */ + void **mfn_mapping; + /* list of mfns of guest ring, protected by L3 */ + mfn_t *mfns; + /* list of struct pending_ent for this ring, protected by L3 */ + struct list_head pending; + /* number of pending entries queued for this ring, protected by L3 */ + unsigned int npending; +}; + +/* Data about a single-sender ring, held by the sender (partner) domain */ +struct argo_send_info +{ + /* next node in the hash, protected by send_L2 */ + struct list_head node; + /* this ring's id, protected by send_L2 */ + struct argo_ring_id id; +}; + +/* A space-available notification that is awaiting sufficient space */ +struct pending_ent +{ + /* List node within argo_ring_info's pending list */ + struct list_head node; + /* + * List node within argo_domain's wildcard_pend_list. Only used if the + * ring is one with a wildcard partner (ie. that any domain may send to) + * to enable cancelling signals on wildcard rings on domain destroy. + */ + struct list_head wildcard_node; + /* + * Pointer to the ring_info that this ent pertains to. Used to ensure that + * ring_info->npending is decremented when ents for wildcard rings are + * cancelled for domain destroy. + * Caution: Must hold the correct locks before accessing ring_info via this. + */ + struct argo_ring_info *ring_info; + /* minimum ring space available that this signal is waiting upon */ + unsigned int len; + /* domain to be notified when space is available */ + domid_t domain_id; +}; + +/* + * The value of the argo element in a struct domain is + * protected by L1_global_argo_rwlock + */ +#define ARGO_HASHTABLE_SIZE 32 +struct argo_domain +{ + /* rings_L2 */ + rwlock_t rings_L2_rwlock; + /* + * Hash table of argo_ring_info about rings this domain has registered. + * Protected by rings_L2. + */ + struct list_head ring_hash[ARGO_HASHTABLE_SIZE]; + /* Counter of rings registered by this domain. Protected by rings_L2. */ + unsigned int ring_count; + + /* send_L2 */ + spinlock_t send_L2_lock; + /* + * Hash table of argo_send_info about rings other domains have registered + * for this domain to send to. Single partner, non-wildcard rings. + * Protected by send_L2. + */ + struct list_head send_hash[ARGO_HASHTABLE_SIZE]; + + /* wildcard_L2 */ + spinlock_t wildcard_L2_lock; + /* + * List of pending space-available signals for this domain about wildcard + * rings registered by other domains. Protected by wildcard_L2. + */ + struct list_head wildcard_pend_list; +}; + +/* + * Locking is organized as follows: + * + * Terminology: R() means taking a read lock on the specified lock; + * W() means taking a write lock on it. + * + * == L1 : The global read/write lock: L1_global_argo_rwlock + * Protects the argo elements of all struct domain *d in the system. + * + * R(L1) does not protect any of the elements of d->argo; it protects their + * addresses. W(L1) protects those and more since it implies W on all the lower + * level locks - see the notes on those locks below. + * + * The destruction of an argo-enabled domain, which must have a non-NULL d->argo + * pointer, will need to free that d->argo pointer, which requires W(L1). + * Since holding R(L1) will block acquiring W(L1), it will ensure that + * no domains pointers that argo is interested in become invalid while either + * W(L1) or R(L1) are held. + */ + +static DEFINE_RWLOCK(L1_global_argo_rwlock); /* L1 */ + +/* + * == rings_L2 : The per-domain ring hash lock: d->argo->rings_L2_rwlock + * + * Holding a read lock on rings_L2 protects the ring hash table and + * the elements in the hash_table d->argo->ring_hash, and + * the node and id fields in struct argo_ring_info in the + * hash table. + * Holding a write lock on rings_L2 protects all of the elements of all the + * struct argo_ring_info belonging to this domain. + * + * To take rings_L2 you must already have R(L1). W(L1) implies W(rings_L2) and + * L3. + * + * == L3 : The individual ring_info lock: ring_info->L3_lock + * + * Protects all the fields within the argo_ring_info, aside from the ones that + * rings_L2 already protects: node, id, lock. + * + * To acquire L3 you must already have R(rings_L2). W(rings_L2) implies L3. + * + * == send_L2 : The per-domain single-sender partner rings lock: + * d->argo->send_L2_lock + * + * Protects the per-domain send hash table : d->argo->send_hash + * and the elements in the hash table, and the node and id fields + * in struct argo_send_info in the hash table. + * + * To take send_L2, you must already have R(L1). W(L1) implies send_L2. + * Do not attempt to acquire a rings_L2 on any domain after taking and while + * holding a send_L2 lock -- acquire the rings_L2 (if one is needed) beforehand. + * + * == wildcard_L2 : The per-domain wildcard pending list lock: + * d->argo->wildcard_L2_lock + * + * Protects the per-domain list of outstanding signals for space availability + * on wildcard rings. + * + * To take wildcard_L2, you must already have R(L1). W(L1) implies wildcard_L2. + * No other locks are acquired after obtaining wildcard_L2. + */ + +/* + * Lock state validations macros + * + * These macros encode the logic to verify that the locking has adhered to the + * locking discipline above. + * eg. On entry to logic that requires holding at least R(rings_L2), this: + * ASSERT(LOCKING_Read_rings_L2(d)); + * + * checks that the lock state is sufficient, validating that one of the + * following must be true when executed: R(rings_L2) && R(L1) + * or: W(rings_L2) && R(L1) + * or: W(L1) + * + * The LOCKING macros defined below here are for use at verification points. + */ +#define LOCKING_Write_L1 (rw_is_write_locked(&L1_global_argo_rwlock)) +/* + * While LOCKING_Read_L1 will return true even if the lock is write-locked, + * that's OK because everywhere that a Read lock is needed with these macros, + * holding a Write lock there instead is OK too: we're checking that _at least_ + * the specified level of locks are held. + */ +#define LOCKING_Read_L1 (rw_is_locked(&L1_global_argo_rwlock)) + +#define LOCKING_Write_rings_L2(d) \ + ((LOCKING_Read_L1 && rw_is_write_locked(&(d)->argo->rings_L2_rwlock)) || \ + LOCKING_Write_L1) +/* + * Skip checking LOCKING_Write_rings_L2(d) within this LOCKING_Read_rings_L2 + * definition because the first clause that is testing R(L1) && R(L2) will also + * return true if R(L1) && W(L2) is true, because of the way that rw_is_locked + * behaves. This results in a slightly shorter and faster implementation. + */ +#define LOCKING_Read_rings_L2(d) \ + ((LOCKING_Read_L1 && rw_is_locked(&(d)->argo->rings_L2_rwlock)) || \ + LOCKING_Write_L1) +/* + * Skip checking LOCKING_Write_L1 within this LOCKING_L3 definition because + * LOCKING_Write_rings_L2(d) will return true for that condition. + */ +#define LOCKING_L3(d, r) \ + ((LOCKING_Read_L1 && rw_is_locked(&(d)->argo->rings_L2_rwlock) \ + && spin_is_locked(&(r)->L3_lock)) || LOCKING_Write_rings_L2(d)) + +#define LOCKING_send_L2(d) \ + ((LOCKING_Read_L1 && spin_is_locked(&(d)->argo->send_L2_lock)) || \ + LOCKING_Write_L1) /* Change this to #define ARGO_DEBUG here to enable more debug messages */ #undef ARGO_DEBUG @@ -28,12 +281,289 @@ #define argo_dprintk(format, ... ) ((void)0) #endif +/* + * This hash function is used to distribute rings within the per-domain + * hash tables (d->argo->ring_hash and d->argo_send_hash). The hash table + * will provide a struct if a match is found with a 'argo_ring_id' key: + * ie. the key is a (domain id, argo port, partner domain id) tuple. + * The algorithm approximates the string hashing function 'djb2'. + */ +static unsigned int +hash_index(const struct argo_ring_id *id) +{ + unsigned int hash = 5381; /* prime constant from djb2 */ + + /* For each input: hash = hash * 33 + */ + hash = ((hash << 5) + hash) + (id->aport & 0xff); + hash = ((hash << 5) + hash) + ((id->aport >> 8) & 0xff); + hash = ((hash << 5) + hash) + ((id->aport >> 16) & 0xff); + hash = ((hash << 5) + hash) + ((id->aport >> 24) & 0xff); + hash = ((hash << 5) + hash) + (id->domain_id & 0xff); + hash = ((hash << 5) + hash) + ((id->domain_id >> 8) & 0xff); + hash = ((hash << 5) + hash) + (id->partner_id & 0xff); + hash = ((hash << 5) + hash) + ((id->partner_id >> 8) & 0xff); + + /* + * Since ARGO_HASHTABLE_SIZE is small, use higher-order bits of the + * hash to contribute to the lower-order bits before masking off. + */ + return (hash ^ (hash >> 15)) & (ARGO_HASHTABLE_SIZE - 1); +} + +static struct argo_ring_info * +find_ring_info(const struct domain *d, const struct argo_ring_id *id) +{ + struct argo_ring_info *ring_info; + const struct list_head *bucket; + + ASSERT(LOCKING_Read_rings_L2(d)); + + /* List is not modified here. Search and return the match if found. */ + bucket = &d->argo->ring_hash[hash_index(id)]; + + list_for_each_entry(ring_info, bucket, node) + { + const struct argo_ring_id *cmpid = &ring_info->id; + + if ( cmpid->aport == id->aport && + cmpid->domain_id == id->domain_id && + cmpid->partner_id == id->partner_id ) + { + argo_dprintk("found ring_info for ring(%u:%x %u)\n", + id->domain_id, id->aport, id->partner_id); + return ring_info; + } + } + argo_dprintk("no ring_info for ring(%u:%x %u)\n", + id->domain_id, id->aport, id->partner_id); + + return NULL; +} + +static void +ring_unmap(const struct domain *d, struct argo_ring_info *ring_info) +{ + unsigned int i; + + ASSERT(LOCKING_L3(d, ring_info)); + + if ( !ring_info->mfn_mapping ) + return; + + ASSERT(!ring_info->nmfns || ring_info->mfns); + + for ( i = 0; i < ring_info->nmfns; i++ ) + { + if ( !ring_info->mfn_mapping[i] ) + continue; + + ASSERT(!mfn_eq(ring_info->mfns[i], INVALID_MFN)); + argo_dprintk(XENLOG_ERR "argo: unmapping page %"PRI_mfn" from %p\n", + mfn_x(ring_info->mfns[i]), ring_info->mfn_mapping[i]); + + unmap_domain_page_global(ring_info->mfn_mapping[i]); + ring_info->mfn_mapping[i] = NULL; + } +} + +static void +wildcard_pending_list_remove(domid_t domain_id, struct pending_ent *ent) +{ + struct domain *d = get_domain_by_id(domain_id); + + if ( !d ) + return; + + ASSERT(LOCKING_Read_L1); + + if ( d->argo ) + { + spin_lock(&d->argo->wildcard_L2_lock); + list_del(&ent->wildcard_node); + spin_unlock(&d->argo->wildcard_L2_lock); + } + put_domain(d); +} + +static void +pending_remove_all(const struct domain *d, struct argo_ring_info *ring_info) +{ + struct pending_ent *ent; + + ASSERT(LOCKING_L3(d, ring_info)); + + /* Delete all pending notifications from this ring's list. */ + while ( (ent = list_first_entry_or_null(&ring_info->pending, + struct pending_ent, node)) ) + { + /* For wildcard rings, remove each from their wildcard list too. */ + if ( ring_info->id.partner_id == XEN_ARGO_DOMID_ANY ) + wildcard_pending_list_remove(ent->domain_id, ent); + list_del(&ent->node); + xfree(ent); + } + ring_info->npending = 0; +} + +static void +wildcard_rings_pending_remove(struct domain *d) +{ + struct pending_ent *ent; + + ASSERT(LOCKING_Write_L1); + + /* Delete all pending signals to the domain about wildcard rings. */ + while ( (ent = list_first_entry_or_null(&d->argo->wildcard_pend_list, + struct pending_ent, node)) ) + { + /* + * The ent->node deleted here, and the npending value decreased, + * belong to the ring_info of another domain, which is why this + * function requires holding W(L1): + * it implies the L3 lock that protects that ring_info struct. + */ + ent->ring_info->npending--; + list_del(&ent->node); + list_del(&ent->wildcard_node); + xfree(ent); + } +} + +static void +ring_remove_mfns(const struct domain *d, struct argo_ring_info *ring_info) +{ + unsigned int i; + + ASSERT(LOCKING_Write_rings_L2(d)); + + if ( !ring_info->mfns ) + return; + + if ( !ring_info->mfn_mapping ) + { + ASSERT_UNREACHABLE(); + return; + } + + ring_unmap(d, ring_info); + + for ( i = 0; i < ring_info->nmfns; i++ ) + if ( !mfn_eq(ring_info->mfns[i], INVALID_MFN) ) + put_page_and_type(mfn_to_page(ring_info->mfns[i])); + + ring_info->nmfns = 0; + XFREE(ring_info->mfns); + XFREE(ring_info->mfn_mapping); +} + +static void +ring_remove_info(const struct domain *d, struct argo_ring_info *ring_info) +{ + ASSERT(LOCKING_Write_rings_L2(d)); + + pending_remove_all(d, ring_info); + list_del(&ring_info->node); + ring_remove_mfns(d, ring_info); + xfree(ring_info); +} + +static void +domain_rings_remove_all(struct domain *d) +{ + unsigned int i; + + ASSERT(LOCKING_Write_rings_L2(d)); + + for ( i = 0; i < ARGO_HASHTABLE_SIZE; ++i ) + { + struct argo_ring_info *ring_info; + struct list_head *bucket = &d->argo->ring_hash[i]; + + while ( (ring_info = list_first_entry_or_null(bucket, + struct argo_ring_info, + node)) ) + ring_remove_info(d, ring_info); + } + d->argo->ring_count = 0; +} + +/* + * Tear down all rings of other domains where src_d domain is the partner. + * (ie. it is the single domain that can send to those rings.) + * This will also cancel any pending notifications about those rings. + */ +static void +partner_rings_remove(struct domain *src_d) +{ + unsigned int i; + + ASSERT(LOCKING_Write_L1); + + for ( i = 0; i < ARGO_HASHTABLE_SIZE; ++i ) + { + struct argo_send_info *send_info; + struct list_head *bucket = &src_d->argo->send_hash[i]; + + /* Remove all ents from the send list. Take each off their ring list. */ + while ( (send_info = list_first_entry_or_null(bucket, + struct argo_send_info, + node)) ) + { + struct domain *dst_d = get_domain_by_id(send_info->id.domain_id); + + if ( dst_d && dst_d->argo ) + { + struct argo_ring_info *ring_info = + find_ring_info(dst_d, &send_info->id); + + if ( ring_info ) + { + ring_remove_info(dst_d, ring_info); + dst_d->argo->ring_count--; + } + else + ASSERT_UNREACHABLE(); + } + else + ASSERT_UNREACHABLE(); + + if ( dst_d ) + put_domain(dst_d); + + list_del(&send_info->node); + xfree(send_info); + } + } +} + long do_argo_op(unsigned int cmd, XEN_GUEST_HANDLE_PARAM(void) arg1, XEN_GUEST_HANDLE_PARAM(void) arg2, unsigned long raw_arg3, unsigned long raw_arg4) { - return -ENOSYS; + long rc; + unsigned int arg3 = raw_arg3, arg4 = raw_arg4; + + argo_dprintk("->do_argo_op(%u,%p,%p,%lu,0x%lx)\n", cmd, + (void *)arg1.p, (void *)arg2.p, raw_arg3, raw_arg4); + + /* Reject numeric hypercall args outside 32-bit range */ + if ( (arg3 != raw_arg3) || (arg4 != raw_arg4) ) + return -EINVAL; + + if ( unlikely(!opt_argo) ) + return -EOPNOTSUPP; + + switch ( cmd ) + { + default: + rc = -EOPNOTSUPP; + break; + } + + argo_dprintk("<-do_argo_op(%u)=%ld\n", cmd, rc); + + return rc; } #ifdef CONFIG_COMPAT @@ -42,6 +572,96 @@ compat_argo_op(unsigned int cmd, XEN_GUEST_HANDLE_PARAM(void) arg1, XEN_GUEST_HANDLE_PARAM(void) arg2, unsigned long arg3, unsigned long arg4) { - return -ENOSYS; + /* Forward all ops to the native handler */ + return do_argo_op(cmd, arg1, arg2, arg3, arg4); } #endif + +static void +argo_domain_init(struct argo_domain *argo) +{ + unsigned int i; + + rwlock_init(&argo->rings_L2_rwlock); + spin_lock_init(&argo->send_L2_lock); + spin_lock_init(&argo->wildcard_L2_lock); + + for ( i = 0; i < ARGO_HASHTABLE_SIZE; ++i ) + { + INIT_LIST_HEAD(&argo->ring_hash[i]); + INIT_LIST_HEAD(&argo->send_hash[i]); + } + INIT_LIST_HEAD(&argo->wildcard_pend_list); +} + +int +argo_init(struct domain *d) +{ + struct argo_domain *argo; + + if ( !opt_argo ) + { + argo_dprintk("argo disabled, domid: %u\n", d->domain_id); + return 0; + } + + argo_dprintk("init: domid: %u\n", d->domain_id); + + argo = xzalloc(struct argo_domain); + if ( !argo ) + return -ENOMEM; + + argo_domain_init(argo); + + write_lock(&L1_global_argo_rwlock); + + d->argo = argo; + + write_unlock(&L1_global_argo_rwlock); + + return 0; +} + +void +argo_destroy(struct domain *d) +{ + BUG_ON(!d->is_dying); + + write_lock(&L1_global_argo_rwlock); + + argo_dprintk("destroy: domid %u d->argo=%p\n", d->domain_id, d->argo); + + if ( d->argo ) + { + domain_rings_remove_all(d); + partner_rings_remove(d); + wildcard_rings_pending_remove(d); + XFREE(d->argo); + } + + write_unlock(&L1_global_argo_rwlock); +} + +void +argo_soft_reset(struct domain *d) +{ + write_lock(&L1_global_argo_rwlock); + + argo_dprintk("soft reset d=%u d->argo=%p\n", d->domain_id, d->argo); + + if ( d->argo ) + { + domain_rings_remove_all(d); + partner_rings_remove(d); + wildcard_rings_pending_remove(d); + + /* + * Since opt_argo cannot change at runtime, if d->argo is true then + * opt_argo must be true, and we can assume that init is allowed to + * proceed again here. + */ + argo_domain_init(d->argo); + } + + write_unlock(&L1_global_argo_rwlock); +} diff --git a/xen/common/domain.c b/xen/common/domain.c index c623daec56..7470cd916a 100644 --- a/xen/common/domain.c +++ b/xen/common/domain.c @@ -32,6 +32,7 @@ #include #include #include +#include #include #include #include @@ -277,6 +278,8 @@ static void _domain_destroy(struct domain *d) xfree(d->pbuf); + argo_destroy(d); + rangeset_domain_destroy(d); free_cpumask_var(d->dirty_cpumask); @@ -445,6 +448,9 @@ struct domain *domain_create(domid_t domid, goto fail; init_status |= INIT_gnttab; + if ( (err = argo_init(d)) != 0 ) + goto fail; + err = -ENOMEM; d->pbuf = xzalloc_array(char, DOMAIN_PBUF_SIZE); @@ -717,6 +723,7 @@ int domain_kill(struct domain *d) if ( d->is_dying != DOMDYING_alive ) return domain_kill(d); d->is_dying = DOMDYING_dying; + argo_destroy(d); evtchn_destroy(d); gnttab_release_mappings(d); tmem_destroy(d->tmem_client); @@ -1175,6 +1182,8 @@ int domain_soft_reset(struct domain *d) grant_table_warn_active_grants(d); + argo_soft_reset(d); + for_each_vcpu ( d, v ) { set_xen_guest_handle(runstate_guest(v), NULL); diff --git a/xen/include/Makefile b/xen/include/Makefile index f7895e4d4e..3d14532dbd 100644 --- a/xen/include/Makefile +++ b/xen/include/Makefile @@ -5,6 +5,7 @@ ifneq ($(CONFIG_COMPAT),) compat-arch-$(CONFIG_X86) := x86_32 headers-y := \ + compat/argo.h \ compat/callback.h \ compat/elfnote.h \ compat/event_channel.h \ diff --git a/xen/include/public/argo.h b/xen/include/public/argo.h new file mode 100644 index 0000000000..530bb82c62 --- /dev/null +++ b/xen/include/public/argo.h @@ -0,0 +1,64 @@ +/****************************************************************************** + * Argo : Hypervisor-Mediated data eXchange + * + * Derived from v4v, the version 2 of v2v. + * + * Copyright (c) 2010, Citrix Systems + * Copyright (c) 2018-2019, BAE Systems + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * + */ + +#ifndef __XEN_PUBLIC_ARGO_H__ +#define __XEN_PUBLIC_ARGO_H__ + +#include "xen.h" + +#define XEN_ARGO_DOMID_ANY DOMID_INVALID + +/* Fixed-width type for "argo port" number. Nothing to do with evtchns. */ +typedef uint32_t xen_argo_port_t; + +typedef struct xen_argo_addr +{ + xen_argo_port_t aport; + domid_t domain_id; + uint16_t pad; +} xen_argo_addr_t; + +typedef struct xen_argo_ring +{ + /* Guests should use atomic operations to access rx_ptr */ + uint32_t rx_ptr; + /* Guests should use atomic operations to access tx_ptr */ + uint32_t tx_ptr; + /* + * Header space reserved for later use. Align the start of the ring to a + * multiple of the message slot size. + */ + uint8_t reserved[56]; +#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L + uint8_t ring[]; +#elif defined(__GNUC__) + uint8_t ring[0]; +#endif +} xen_argo_ring_t; + +#endif diff --git a/xen/include/xen/argo.h b/xen/include/xen/argo.h new file mode 100644 index 0000000000..2ba7e5c0c0 --- /dev/null +++ b/xen/include/xen/argo.h @@ -0,0 +1,44 @@ +/****************************************************************************** + * Argo : Hypervisor-Mediated data eXchange + * + * Copyright (c) 2018, BAE Systems + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef __XEN_ARGO_H__ +#define __XEN_ARGO_H__ + +#include + +#ifdef CONFIG_ARGO + +int argo_init(struct domain *d); +void argo_destroy(struct domain *d); +void argo_soft_reset(struct domain *d); + +#else /* !CONFIG_ARGO */ + +static inline int argo_init(struct domain *d) +{ + return 0; +} + +static inline void argo_destroy(struct domain *d) +{ +} + +static inline void argo_soft_reset(struct domain *d) +{ +} + +#endif + +#endif diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h index 86f15b11e0..d633e1da70 100644 --- a/xen/include/xen/sched.h +++ b/xen/include/xen/sched.h @@ -491,6 +491,11 @@ struct domain unsigned int guest_request_enabled : 1; unsigned int guest_request_sync : 1; } monitor; + +#ifdef CONFIG_ARGO + /* Argo interdomain communication support */ + struct argo_domain *argo; +#endif }; /* Protect updates/reads (resp.) of domain_list and domain_hash. */ diff --git a/xen/include/xlat.lst b/xen/include/xlat.lst index 527332054a..16601d947f 100644 --- a/xen/include/xlat.lst +++ b/xen/include/xlat.lst @@ -30,6 +30,8 @@ ? mc_notifydomain arch-x86/xen-mca.h ! mc_physcpuinfo arch-x86/xen-mca.h ? page_offline_action arch-x86/xen-mca.h +? argo_addr argo.h +? argo_ring argo.h ? evtchn_alloc_unbound event_channel.h ? evtchn_bind_interdomain event_channel.h ? evtchn_bind_ipi event_channel.h -- generated by git-patchbot for /home/xen/git/xen.git#master --===============5999176361060951549== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============5999176361060951549==-- From xen-changelog-bounces@lists.xenproject.org Mon Feb 18 10:45:26 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 18 Feb 2019 10:45:26 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgQQ-0004lU-I0; 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boundary="===============6273955847663282607==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============6273955847663282607== Content-Type: text/plain commit 4048189d0125ed6033300a7951feb8a430504bf5 Author: Christopher Clark AuthorDate: Wed Feb 6 09:55:00 2019 +0100 Commit: Jan Beulich CommitDate: Thu Feb 7 14:22:52 2019 +0100 argo: implement the register op The register op is used by a domain to register a region of memory for receiving messages from either a specified other domain, or, if specifying a wildcard, any domain. This operation creates a mapping within Xen's private address space that will remain resident for the lifetime of the ring. In subsequent commits, the hypervisor will use this mapping to copy data from a sending domain into this registered ring, making it accessible to the domain that registered the ring to receive data. Wildcard any-sender rings are default disabled and registration will be refused with EPERM unless they have been specifically enabled with the new mac-permissive flag that is added to the argo boot option here. The reason why the default for wildcard rings is 'deny' is that there is currently no means to protect the ring from DoS by a noisy domain spamming the ring, affecting other domains ability to send to it. This will be addressed with XSM policy controls in subsequent work. Since denying access to any-sender rings is a significant functional constraint, the new option "mac-permissive" for the argo bootparam enables overriding this. eg: "argo=1,mac-permissive=1" The p2m type of the memory supplied by the guest for the ring must be p2m_ram_rw and the memory will be pinned as PGT_writable_page while the ring is registered. This hypercall op and its interface currently only supports 4K-sized pages. Signed-off-by: Christopher Clark Tested-by: Chris Patterson Reviewed-by: Roger Pau Monné Release-acked-by: Juergen Gross --- docs/misc/xen-command-line.pandoc | 9 +- xen/common/argo.c | 473 ++++++++++++++++++++++++++++++++++++++ xen/include/public/argo.h | 69 ++++++ xen/include/xlat.lst | 2 + 4 files changed, 552 insertions(+), 1 deletion(-) diff --git a/docs/misc/xen-command-line.pandoc b/docs/misc/xen-command-line.pandoc index 605c544bd3..c8d1ced018 100644 --- a/docs/misc/xen-command-line.pandoc +++ b/docs/misc/xen-command-line.pandoc @@ -183,7 +183,7 @@ in combination with cpuidle. This option is only expected to be useful for developers wishing Xen to fall back to older timing methods on newer hardware. ### argo - = List of [ ] + = List of [ , mac-permissive= ] Controls for the Argo hypervisor-mediated interdomain communication service. @@ -195,6 +195,13 @@ point of authority. Guests may register memory rings to recieve messages, query the status of other domains, and send messages by hypercall, all subject to appropriate auditing by Xen. Argo is disabled by default. +* The `mac-permissive` boolean controls whether wildcard receive rings may be + registered (`mac-permissive=1`) or may not be registered + (`mac-permissive=0`). + + This option is disabled by default, to protect domains from a DoS by a + buggy or malicious other domain spamming the ring. + ### asid (x86) > `= ` diff --git a/xen/common/argo.c b/xen/common/argo.c index f1626ca520..814dd0cf1c 100644 --- a/xen/common/argo.c +++ b/xen/common/argo.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include #include @@ -31,13 +32,30 @@ #ifdef CONFIG_COMPAT #include CHECK_argo_addr; +#undef CHECK_argo_addr +#define CHECK_argo_addr struct xen_argo_addr +CHECK_argo_register_ring; CHECK_argo_ring; +CHECK_argo_ring_message_header; #endif +#define MAX_RINGS_PER_DOMAIN 128U + +/* All messages on the ring are padded to a multiple of the slot size. */ +#define ROUNDUP_MESSAGE(a) ROUNDUP((a), XEN_ARGO_MSG_SLOT_SIZE) + +/* Number of PAGEs needed to hold a ring of a given size in bytes */ +#define NPAGES_RING(ring_len) \ + (ROUNDUP((ROUNDUP_MESSAGE(ring_len) + sizeof(xen_argo_ring_t)), PAGE_SIZE) \ + >> PAGE_SHIFT) + DEFINE_XEN_GUEST_HANDLE(xen_argo_addr_t); +DEFINE_XEN_GUEST_HANDLE(xen_argo_gfn_t); +DEFINE_XEN_GUEST_HANDLE(xen_argo_register_ring_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_ring_t); static bool __read_mostly opt_argo; +static bool __read_mostly opt_argo_mac_permissive; static int __init parse_argo(const char *s) { @@ -51,6 +69,8 @@ static int __init parse_argo(const char *s) if ( (val = parse_bool(s, ss)) >= 0 ) opt_argo = val; + else if ( (val = parse_boolean("mac-permissive", s, ss)) >= 0 ) + opt_argo_mac_permissive = val; else rc = -EINVAL; @@ -366,6 +386,74 @@ ring_unmap(const struct domain *d, struct argo_ring_info *ring_info) } } +static int +ring_map_page(const struct domain *d, struct argo_ring_info *ring_info, + unsigned int i, void **out_ptr) +{ + ASSERT(LOCKING_L3(d, ring_info)); + + /* + * FIXME: Investigate using vmap to create a single contiguous virtual + * address space mapping of the ring instead of using the array of single + * page mappings. + * Affects logic in memcpy_to_guest_ring, the mfn_mapping array data + * structure, and places where ring mappings are added or removed. + */ + + if ( i >= ring_info->nmfns ) + { + gprintk(XENLOG_ERR, + "argo: ring (vm%u:%x vm%u) %p attempted to map page %u of %u\n", + ring_info->id.domain_id, ring_info->id.aport, + ring_info->id.partner_id, ring_info, i, ring_info->nmfns); + return -ENOMEM; + } + i = array_index_nospec(i, ring_info->nmfns); + + if ( !ring_info->mfns || !ring_info->mfn_mapping ) + { + ASSERT_UNREACHABLE(); + ring_info->len = 0; + return -ENOMEM; + } + + if ( !ring_info->mfn_mapping[i] ) + { + ring_info->mfn_mapping[i] = map_domain_page_global(ring_info->mfns[i]); + if ( !ring_info->mfn_mapping[i] ) + { + gprintk(XENLOG_ERR, "argo: ring (vm%u:%x vm%u) %p attempted to map " + "page %u of %u\n", + ring_info->id.domain_id, ring_info->id.aport, + ring_info->id.partner_id, ring_info, i, ring_info->nmfns); + return -ENOMEM; + } + argo_dprintk("mapping page %"PRI_mfn" to %p\n", + mfn_x(ring_info->mfns[i]), ring_info->mfn_mapping[i]); + } + + if ( out_ptr ) + *out_ptr = ring_info->mfn_mapping[i]; + + return 0; +} + +static void +update_tx_ptr(const struct domain *d, struct argo_ring_info *ring_info, + uint32_t tx_ptr) +{ + xen_argo_ring_t *ringp; + + ASSERT(LOCKING_L3(d, ring_info)); + ASSERT(ring_info->mfn_mapping[0]); + + ring_info->tx_ptr = tx_ptr; + ringp = ring_info->mfn_mapping[0]; + + write_atomic(&ringp->tx_ptr, tx_ptr); + smp_wmb(); +} + static void wildcard_pending_list_remove(domid_t domain_id, struct pending_ent *ent) { @@ -536,11 +624,369 @@ partner_rings_remove(struct domain *src_d) } } +static int +find_ring_mfn(struct domain *d, gfn_t gfn, mfn_t *mfn) +{ + struct page_info *page; + p2m_type_t p2mt; + int ret; + + ret = check_get_page_from_gfn(d, gfn, false, &p2mt, &page); + if ( unlikely(ret) ) + return ret; + + *mfn = page_to_mfn(page); + if ( !mfn_valid(*mfn) ) + ret = -EINVAL; +#ifdef CONFIG_X86 + else if ( p2mt == p2m_ram_logdirty ) + ret = -EAGAIN; +#endif + else if ( (p2mt != p2m_ram_rw) || + !get_page_and_type(page, d, PGT_writable_page) ) + ret = -EINVAL; + + put_page(page); + + return ret; +} + +static int +find_ring_mfns(struct domain *d, struct argo_ring_info *ring_info, + const unsigned int npage, + XEN_GUEST_HANDLE_PARAM(xen_argo_gfn_t) gfn_hnd, + const unsigned int len) +{ + unsigned int i; + int ret = 0; + mfn_t *mfns; + void **mfn_mapping; + + ASSERT(LOCKING_Write_rings_L2(d)); + + if ( ring_info->mfns ) + { + /* Ring already existed: drop the previous mapping. */ + gprintk(XENLOG_INFO, "argo: vm%u re-register existing ring " + "(vm%u:%x vm%u) clears mapping\n", + d->domain_id, ring_info->id.domain_id, + ring_info->id.aport, ring_info->id.partner_id); + + ring_remove_mfns(d, ring_info); + ASSERT(!ring_info->mfns); + } + + mfns = xmalloc_array(mfn_t, npage); + if ( !mfns ) + return -ENOMEM; + + for ( i = 0; i < npage; i++ ) + mfns[i] = INVALID_MFN; + + mfn_mapping = xzalloc_array(void *, npage); + if ( !mfn_mapping ) + { + xfree(mfns); + return -ENOMEM; + } + + ring_info->mfns = mfns; + ring_info->mfn_mapping = mfn_mapping; + + for ( i = 0; i < npage; i++ ) + { + mfn_t mfn; + xen_argo_gfn_t argo_gfn; + + ret = __copy_from_guest_offset(&argo_gfn, gfn_hnd, i, 1) ? -EFAULT : 0; + if ( ret ) + break; + + ret = find_ring_mfn(d, _gfn(argo_gfn), &mfn); + if ( ret ) + { + gprintk(XENLOG_ERR, "argo: vm%u: invalid gfn %"PRI_gfn" " + "r:(vm%u:%x vm%u) %p %u/%u\n", + d->domain_id, gfn_x(_gfn(argo_gfn)), + ring_info->id.domain_id, ring_info->id.aport, + ring_info->id.partner_id, ring_info, i, npage); + break; + } + + ring_info->mfns[i] = mfn; + + argo_dprintk("%u: %"PRI_gfn" -> %"PRI_mfn"\n", + i, gfn_x(_gfn(argo_gfn)), mfn_x(ring_info->mfns[i])); + } + + ring_info->nmfns = i; + + if ( ret ) + ring_remove_mfns(d, ring_info); + else + { + ASSERT(ring_info->nmfns == NPAGES_RING(len)); + + gprintk(XENLOG_DEBUG, "argo: vm%u ring (vm%u:%x vm%u) %p " + "mfn_mapping %p len %u nmfns %u\n", + d->domain_id, ring_info->id.domain_id, + ring_info->id.aport, ring_info->id.partner_id, ring_info, + ring_info->mfn_mapping, ring_info->len, ring_info->nmfns); + } + + return ret; +} + +static long +register_ring(struct domain *currd, + XEN_GUEST_HANDLE_PARAM(xen_argo_register_ring_t) reg_hnd, + XEN_GUEST_HANDLE_PARAM(xen_argo_gfn_t) gfn_hnd, + unsigned int npage, unsigned int flags) +{ + xen_argo_register_ring_t reg; + struct argo_ring_id ring_id; + void *map_ringp; + xen_argo_ring_t *ringp; + struct argo_ring_info *ring_info, *new_ring_info = NULL; + struct argo_send_info *send_info = NULL; + struct domain *dst_d = NULL; + int ret = 0; + unsigned int private_tx_ptr; + + ASSERT(currd == current->domain); + + /* flags: reserve currently-undefined bits, require zero. */ + if ( unlikely(flags & ~XEN_ARGO_REGISTER_FLAG_MASK) ) + return -EINVAL; + + if ( copy_from_guest(®, reg_hnd, 1) ) + return -EFAULT; + + /* + * A ring must be large enough to transmit messages, so requires space for: + * * 1 message header, plus + * * 1 payload slot (payload is always rounded to a multiple of 16 bytes) + * for the message payload to be written into, plus + * * 1 more slot, so that the ring cannot be filled to capacity with a + * single minimum-size message -- see the logic in ringbuf_insert -- + * allowing for this ensures that there can be space remaining when a + * message is present. + * The above determines the minimum acceptable ring size. + */ + if ( (reg.len < (sizeof(struct xen_argo_ring_message_header) + + ROUNDUP_MESSAGE(1) + ROUNDUP_MESSAGE(1))) || + (reg.len > XEN_ARGO_MAX_RING_SIZE) || + (reg.len != ROUNDUP_MESSAGE(reg.len)) || + (NPAGES_RING(reg.len) != npage) || + (reg.pad != 0) ) + return -EINVAL; + + ring_id.partner_id = reg.partner_id; + ring_id.aport = reg.aport; + ring_id.domain_id = currd->domain_id; + + if ( reg.partner_id == XEN_ARGO_DOMID_ANY ) + { + if ( !opt_argo_mac_permissive ) + return -EPERM; + } + else + { + dst_d = get_domain_by_id(reg.partner_id); + if ( !dst_d ) + { + argo_dprintk("!dst_d, ESRCH\n"); + return -ESRCH; + } + + send_info = xzalloc(struct argo_send_info); + if ( !send_info ) + { + ret = -ENOMEM; + goto out; + } + send_info->id = ring_id; + } + + /* + * Common case is that the ring doesn't already exist, so do the alloc here + * before picking up any locks. + */ + new_ring_info = xzalloc(struct argo_ring_info); + if ( !new_ring_info ) + { + ret = -ENOMEM; + goto out; + } + + read_lock(&L1_global_argo_rwlock); + + if ( !currd->argo ) + { + ret = -ENODEV; + goto out_unlock; + } + + if ( dst_d && !dst_d->argo ) + { + argo_dprintk("!dst_d->argo, ECONNREFUSED\n"); + ret = -ECONNREFUSED; + goto out_unlock; + } + + write_lock(&currd->argo->rings_L2_rwlock); + + if ( currd->argo->ring_count >= MAX_RINGS_PER_DOMAIN ) + { + ret = -ENOSPC; + goto out_unlock2; + } + + ring_info = find_ring_info(currd, &ring_id); + if ( !ring_info ) + { + ring_info = new_ring_info; + new_ring_info = NULL; + + spin_lock_init(&ring_info->L3_lock); + + ring_info->id = ring_id; + INIT_LIST_HEAD(&ring_info->pending); + + list_add(&ring_info->node, + &currd->argo->ring_hash[hash_index(&ring_info->id)]); + + gprintk(XENLOG_DEBUG, "argo: vm%u registering ring (vm%u:%x vm%u)\n", + currd->domain_id, ring_id.domain_id, ring_id.aport, + ring_id.partner_id); + } + else if ( ring_info->len ) + { + /* + * If the caller specified that the ring must not already exist, + * fail at attempt to add a completed ring which already exists. + */ + if ( flags & XEN_ARGO_REGISTER_FLAG_FAIL_EXIST ) + { + gprintk(XENLOG_ERR, "argo: vm%u disallowed reregistration of " + "existing ring (vm%u:%x vm%u)\n", + currd->domain_id, ring_id.domain_id, ring_id.aport, + ring_id.partner_id); + ret = -EEXIST; + goto out_unlock2; + } + + if ( ring_info->len != reg.len ) + { + /* + * Change of ring size could result in entries on the pending + * notifications list that will never trigger. + * Simple blunt solution: disallow ring resize for now. + * TODO: investigate enabling ring resize. + */ + gprintk(XENLOG_ERR, "argo: vm%u attempted to change ring size " + "(vm%u:%x vm%u)\n", + currd->domain_id, ring_id.domain_id, ring_id.aport, + ring_id.partner_id); + /* + * Could return EINVAL here, but if the ring didn't already + * exist then the arguments would have been valid, so: EEXIST. + */ + ret = -EEXIST; + goto out_unlock2; + } + + gprintk(XENLOG_DEBUG, + "argo: vm%u re-registering existing ring (vm%u:%x vm%u)\n", + currd->domain_id, ring_id.domain_id, ring_id.aport, + ring_id.partner_id); + } + + ret = find_ring_mfns(currd, ring_info, npage, gfn_hnd, reg.len); + if ( ret ) + { + gprintk(XENLOG_ERR, + "argo: vm%u failed to find ring mfns (vm%u:%x vm%u)\n", + currd->domain_id, ring_id.domain_id, ring_id.aport, + ring_id.partner_id); + + ring_remove_info(currd, ring_info); + goto out_unlock2; + } + + /* + * The first page of the memory supplied for the ring has the xen_argo_ring + * structure at its head, which is where the ring indexes reside. + */ + ret = ring_map_page(currd, ring_info, 0, &map_ringp); + if ( ret ) + { + gprintk(XENLOG_ERR, + "argo: vm%u failed to map ring mfn 0 (vm%u:%x vm%u)\n", + currd->domain_id, ring_id.domain_id, ring_id.aport, + ring_id.partner_id); + + ring_remove_info(currd, ring_info); + goto out_unlock2; + } + ringp = map_ringp; + + private_tx_ptr = read_atomic(&ringp->tx_ptr); + + if ( (private_tx_ptr >= reg.len) || + (ROUNDUP_MESSAGE(private_tx_ptr) != private_tx_ptr) ) + { + /* + * Since the ring is a mess, attempt to flush the contents of it + * here by setting the tx_ptr to the next aligned message slot past + * the latest rx_ptr we have observed. Handle ring wrap correctly. + */ + private_tx_ptr = ROUNDUP_MESSAGE(read_atomic(&ringp->rx_ptr)); + + if ( private_tx_ptr >= reg.len ) + private_tx_ptr = 0; + + update_tx_ptr(currd, ring_info, private_tx_ptr); + } + + ring_info->tx_ptr = private_tx_ptr; + ring_info->len = reg.len; + currd->argo->ring_count++; + + if ( send_info ) + { + spin_lock(&dst_d->argo->send_L2_lock); + + list_add(&send_info->node, + &dst_d->argo->send_hash[hash_index(&send_info->id)]); + + spin_unlock(&dst_d->argo->send_L2_lock); + } + + out_unlock2: + write_unlock(&currd->argo->rings_L2_rwlock); + + out_unlock: + read_unlock(&L1_global_argo_rwlock); + + out: + if ( dst_d ) + put_domain(dst_d); + + if ( ret ) + xfree(send_info); + + xfree(new_ring_info); + + return ret; +} + long do_argo_op(unsigned int cmd, XEN_GUEST_HANDLE_PARAM(void) arg1, XEN_GUEST_HANDLE_PARAM(void) arg2, unsigned long raw_arg3, unsigned long raw_arg4) { + struct domain *currd = current->domain; long rc; unsigned int arg3 = raw_arg3, arg4 = raw_arg4; @@ -556,6 +1002,33 @@ do_argo_op(unsigned int cmd, XEN_GUEST_HANDLE_PARAM(void) arg1, switch ( cmd ) { + case XEN_ARGO_OP_register_ring: + { + XEN_GUEST_HANDLE_PARAM(xen_argo_register_ring_t) reg_hnd = + guest_handle_cast(arg1, xen_argo_register_ring_t); + XEN_GUEST_HANDLE_PARAM(xen_argo_gfn_t) gfn_hnd = + guest_handle_cast(arg2, xen_argo_gfn_t); + /* arg3: npage, arg4: flags */ + + BUILD_BUG_ON(!IS_ALIGNED(XEN_ARGO_MAX_RING_SIZE, PAGE_SIZE)); + + if ( unlikely(arg3 > (XEN_ARGO_MAX_RING_SIZE >> PAGE_SHIFT)) ) + { + rc = -EINVAL; + break; + } + + /* Check array to allow use of the faster __copy operations later */ + if ( unlikely(!guest_handle_okay(gfn_hnd, arg3)) ) + { + rc = -EFAULT; + break; + } + + rc = register_ring(currd, reg_hnd, gfn_hnd, arg3, arg4); + break; + } + default: rc = -EOPNOTSUPP; break; diff --git a/xen/include/public/argo.h b/xen/include/public/argo.h index 530bb82c62..8b763e7159 100644 --- a/xen/include/public/argo.h +++ b/xen/include/public/argo.h @@ -33,9 +33,15 @@ #define XEN_ARGO_DOMID_ANY DOMID_INVALID +/* The maximum size of an Argo ring is defined to be: 16MB (0x1000000 bytes). */ +#define XEN_ARGO_MAX_RING_SIZE (0x1000000ULL) + /* Fixed-width type for "argo port" number. Nothing to do with evtchns. */ typedef uint32_t xen_argo_port_t; +/* gfn type: 64-bit fixed-width on all architectures */ +typedef uint64_t xen_argo_gfn_t; + typedef struct xen_argo_addr { xen_argo_port_t aport; @@ -61,4 +67,67 @@ typedef struct xen_argo_ring #endif } xen_argo_ring_t; +typedef struct xen_argo_register_ring +{ + xen_argo_port_t aport; + domid_t partner_id; + uint16_t pad; + uint32_t len; +} xen_argo_register_ring_t; + +/* Messages on the ring are padded to a multiple of this size. */ +#define XEN_ARGO_MSG_SLOT_SIZE 0x10 + +struct xen_argo_ring_message_header +{ + uint32_t len; + struct xen_argo_addr source; + uint32_t message_type; +#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L + uint8_t data[]; +#elif defined(__GNUC__) + uint8_t data[0]; +#endif +}; + +/* + * Hypercall operations + */ + +/* + * XEN_ARGO_OP_register_ring + * + * Register a ring using the guest-supplied memory pages. + * Also used to reregister an existing ring (eg. after resume from hibernate). + * + * The first argument struct indicates the port number for the ring to register + * and the partner domain, if any, that is to be allowed to send to the ring. + * A wildcard (XEN_ARGO_DOMID_ANY) may be supplied instead of a partner domid, + * and if the hypervisor has wildcard sender rings enabled, this will allow + * any domain (XSM notwithstanding) to send to the ring. + * + * The second argument is an array of guest frame numbers and the third argument + * indicates the size of the array. This operation only supports 4K-sized pages. + * + * arg1: XEN_GUEST_HANDLE(xen_argo_register_ring_t) + * arg2: XEN_GUEST_HANDLE(xen_argo_gfn_t) + * arg3: unsigned long npages + * arg4: unsigned long flags (32-bit value) + */ +#define XEN_ARGO_OP_register_ring 1 + +/* Register op flags */ +/* + * Fail exist: + * If set, reject attempts to (re)register an existing established ring. + * If clear, reregistration occurs if the ring exists, with the new ring + * taking the place of the old, preserving tx_ptr if it remains valid. + */ +#define XEN_ARGO_REGISTER_FLAG_FAIL_EXIST 0x1 + +#ifdef __XEN__ +/* Mask for all defined flags. */ +#define XEN_ARGO_REGISTER_FLAG_MASK XEN_ARGO_REGISTER_FLAG_FAIL_EXIST +#endif + #endif diff --git a/xen/include/xlat.lst b/xen/include/xlat.lst index 16601d947f..349fbad38c 100644 --- a/xen/include/xlat.lst +++ b/xen/include/xlat.lst @@ -31,7 +31,9 @@ ! mc_physcpuinfo arch-x86/xen-mca.h ? page_offline_action arch-x86/xen-mca.h ? argo_addr argo.h +? argo_register_ring argo.h ? argo_ring argo.h +? argo_ring_message_header argo.h ? evtchn_alloc_unbound event_channel.h ? evtchn_bind_interdomain event_channel.h ? evtchn_bind_ipi event_channel.h -- generated by git-patchbot for /home/xen/git/xen.git#master --===============6273955847663282607== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============6273955847663282607==-- From xen-changelog-bounces@lists.xenproject.org Mon Feb 18 10:45:56 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 18 Feb 2019 10:45:56 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgQu-0004qv-PP; Mon, 18 Feb 2019 10:45:56 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgQu-0004qj-0V for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:45:56 +0000 X-Inumbo-ID: 5de8b29f-336a-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 5de8b29f-336a-11e9-bc90-bc764e045a96; Mon, 18 Feb 2019 10:45:54 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgQs-00033P-HW for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:45:54 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gvgQs-0003T1-F3 for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:45:54 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 10:45:54 +0000 Subject: [Xen-changelog] [xen master] argo: implement the unregister op X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============8684011887499398335==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============8684011887499398335== Content-Type: text/plain commit a00ee1ec8f732940eb76f83057095c585d253e04 Author: Christopher Clark AuthorDate: Wed Feb 6 10:04:00 2019 +0100 Commit: Jan Beulich CommitDate: Thu Feb 7 14:23:39 2019 +0100 argo: implement the unregister op Takes a single argument: a handle to the ring unregistration struct, which specifies the port and partner domain id or wildcard. The ring's entry is removed from the hashtable of registered rings; any entries for pending notifications are removed; and the ring is unmapped from Xen's address space. If the ring had been registered to communicate with a single specified domain (ie. a non-wildcard ring) then the partner domain state is removed from the partner domain's argo send_info hash table. Signed-off-by: Christopher Clark Reviewed-by: Roger Pau Monné Tested-by: Chris Patterson Release-acked-by: Juergen Gross --- xen/common/argo.c | 126 ++++++++++++++++++++++++++++++++++++++++++++++ xen/include/public/argo.h | 19 +++++++ xen/include/xlat.lst | 1 + 3 files changed, 146 insertions(+) diff --git a/xen/common/argo.c b/xen/common/argo.c index 814dd0cf1c..f3e468dffd 100644 --- a/xen/common/argo.c +++ b/xen/common/argo.c @@ -37,6 +37,7 @@ CHECK_argo_addr; CHECK_argo_register_ring; CHECK_argo_ring; CHECK_argo_ring_message_header; +CHECK_argo_unregister_ring; #endif #define MAX_RINGS_PER_DOMAIN 128U @@ -53,6 +54,7 @@ DEFINE_XEN_GUEST_HANDLE(xen_argo_addr_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_gfn_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_register_ring_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_ring_t); +DEFINE_XEN_GUEST_HANDLE(xen_argo_unregister_ring_t); static bool __read_mostly opt_argo; static bool __read_mostly opt_argo_mac_permissive; @@ -360,6 +362,36 @@ find_ring_info(const struct domain *d, const struct argo_ring_id *id) return NULL; } +static struct argo_send_info * +find_send_info(const struct domain *d, const struct argo_ring_id *id) +{ + struct argo_send_info *send_info; + const struct list_head *bucket; + + ASSERT(LOCKING_send_L2(d)); + + /* List is not modified here. Search and return the match if found. */ + bucket = &d->argo->send_hash[hash_index(id)]; + + list_for_each_entry(send_info, bucket, node) + { + const struct argo_ring_id *cmpid = &send_info->id; + + if ( cmpid->aport == id->aport && + cmpid->domain_id == id->domain_id && + cmpid->partner_id == id->partner_id ) + { + argo_dprintk("found send_info for ring(%u:%x %u)\n", + id->domain_id, id->aport, id->partner_id); + return send_info; + } + } + argo_dprintk("no send_info for ring(%u:%x %u)\n", + id->domain_id, id->aport, id->partner_id); + + return NULL; +} + static void ring_unmap(const struct domain *d, struct argo_ring_info *ring_info) { @@ -738,6 +770,85 @@ find_ring_mfns(struct domain *d, struct argo_ring_info *ring_info, } static long +unregister_ring(struct domain *currd, + XEN_GUEST_HANDLE_PARAM(xen_argo_unregister_ring_t) unreg_hnd) +{ + xen_argo_unregister_ring_t unreg; + struct argo_ring_id ring_id; + struct argo_ring_info *ring_info = NULL; + struct argo_send_info *send_info = NULL; + struct domain *dst_d = NULL; + + ASSERT(currd == current->domain); + + if ( copy_from_guest(&unreg, unreg_hnd, 1) ) + return -EFAULT; + + if ( unreg.pad ) + return -EINVAL; + + ring_id.partner_id = unreg.partner_id; + ring_id.aport = unreg.aport; + ring_id.domain_id = currd->domain_id; + + read_lock(&L1_global_argo_rwlock); + + if ( unlikely(!currd->argo) ) + { + read_unlock(&L1_global_argo_rwlock); + return -ENODEV; + } + + write_lock(&currd->argo->rings_L2_rwlock); + + ring_info = find_ring_info(currd, &ring_id); + if ( !ring_info ) + goto out; + + ring_remove_info(currd, ring_info); + currd->argo->ring_count--; + + if ( ring_id.partner_id == XEN_ARGO_DOMID_ANY ) + goto out; + + dst_d = get_domain_by_id(ring_id.partner_id); + if ( !dst_d || !dst_d->argo ) + { + ASSERT_UNREACHABLE(); + goto out; + } + + spin_lock(&dst_d->argo->send_L2_lock); + + send_info = find_send_info(dst_d, &ring_id); + if ( send_info ) + list_del(&send_info->node); + else + ASSERT_UNREACHABLE(); + + spin_unlock(&dst_d->argo->send_L2_lock); + + out: + write_unlock(&currd->argo->rings_L2_rwlock); + + read_unlock(&L1_global_argo_rwlock); + + if ( dst_d ) + put_domain(dst_d); + + xfree(send_info); + + if ( !ring_info ) + { + argo_dprintk("unregister_ring: no ring_info found for ring(%u:%x %u)\n", + ring_id.domain_id, ring_id.aport, ring_id.partner_id); + return -ENOENT; + } + + return 0; +} + +static long register_ring(struct domain *currd, XEN_GUEST_HANDLE_PARAM(xen_argo_register_ring_t) reg_hnd, XEN_GUEST_HANDLE_PARAM(xen_argo_gfn_t) gfn_hnd, @@ -1029,6 +1140,21 @@ do_argo_op(unsigned int cmd, XEN_GUEST_HANDLE_PARAM(void) arg1, break; } + case XEN_ARGO_OP_unregister_ring: + { + XEN_GUEST_HANDLE_PARAM(xen_argo_unregister_ring_t) unreg_hnd = + guest_handle_cast(arg1, xen_argo_unregister_ring_t); + + if ( unlikely((!guest_handle_is_null(arg2)) || arg3 || arg4) ) + { + rc = -EINVAL; + break; + } + + rc = unregister_ring(currd, unreg_hnd); + break; + } + default: rc = -EOPNOTSUPP; break; diff --git a/xen/include/public/argo.h b/xen/include/public/argo.h index 8b763e7159..29856df34a 100644 --- a/xen/include/public/argo.h +++ b/xen/include/public/argo.h @@ -75,6 +75,13 @@ typedef struct xen_argo_register_ring uint32_t len; } xen_argo_register_ring_t; +typedef struct xen_argo_unregister_ring +{ + xen_argo_port_t aport; + domid_t partner_id; + uint16_t pad; +} xen_argo_unregister_ring_t; + /* Messages on the ring are padded to a multiple of this size. */ #define XEN_ARGO_MSG_SLOT_SIZE 0x10 @@ -130,4 +137,16 @@ struct xen_argo_ring_message_header #define XEN_ARGO_REGISTER_FLAG_MASK XEN_ARGO_REGISTER_FLAG_FAIL_EXIST #endif +/* + * XEN_ARGO_OP_unregister_ring + * + * Unregister a previously-registered ring, ending communication. + * + * arg1: XEN_GUEST_HANDLE(xen_argo_unregister_ring_t) + * arg2: NULL + * arg3: 0 (ZERO) + * arg4: 0 (ZERO) + */ +#define XEN_ARGO_OP_unregister_ring 2 + #endif diff --git a/xen/include/xlat.lst b/xen/include/xlat.lst index 349fbad38c..ee7dffc7e8 100644 --- a/xen/include/xlat.lst +++ b/xen/include/xlat.lst @@ -34,6 +34,7 @@ ? argo_register_ring argo.h ? argo_ring argo.h ? argo_ring_message_header argo.h +? argo_unregister_ring argo.h ? evtchn_alloc_unbound event_channel.h ? evtchn_bind_interdomain event_channel.h ? evtchn_bind_ipi event_channel.h -- generated by git-patchbot for /home/xen/git/xen.git#master --===============8684011887499398335== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============8684011887499398335==-- From xen-changelog-bounces@lists.xenproject.org Mon Feb 18 10:46:10 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 18 Feb 2019 10:46:10 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgR8-0004tD-Rg; Mon, 18 Feb 2019 10:46:10 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgR7-0004t3-E9 for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:46:09 +0000 X-Inumbo-ID: 63fb214c-336a-11e9-b2ca-bfa78e52cfc9 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 63fb214c-336a-11e9-b2ca-bfa78e52cfc9; Mon, 18 Feb 2019 10:46:05 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgR2-00033w-NZ for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:46:04 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gvgR2-0003Tk-L9 for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:46:04 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 10:46:04 +0000 Subject: [Xen-changelog] [xen master] argo: implement the sendv op; evtchn: expose send_guest_global_virq X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============7267071571842286486==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============7267071571842286486== Content-Type: text/plain commit d5a390ca53600df97a2f3937f4c9a9106b2acfdd Author: Christopher Clark AuthorDate: Wed Feb 6 09:55:00 2019 +0100 Commit: Jan Beulich CommitDate: Thu Feb 7 14:23:52 2019 +0100 argo: implement the sendv op; evtchn: expose send_guest_global_virq sendv operation is invoked to perform a synchronous send of buffers contained in iovs to a remote domain's registered ring. It takes: * A destination address (domid, port) for the ring to send to. It performs a most-specific match lookup, to allow for wildcard. * A source address, used to inform the destination of where to reply. * The address of an array of iovs containing the data to send * .. and the length of that array of iovs * and a 32-bit message type, available to communicate message context data (eg. kernel-to-kernel, separate from the application data). If insufficient space exists in the destination ring, it will return -EAGAIN and Xen will notify the caller when sufficient space becomes available. Accesses to the ring indices are appropriately atomic. The rings are mapped into Xen's private address space to write as needed and the mappings are retained for later use. Notifications are sent to guests via VIRQ and send_guest_global_virq is exposed in the change to enable argo to call it. VIRQ_ARGO is claimed from the VIRQ previously reserved for this purpose (#11). The VIRQ notification method is used rather than sending events using evtchn functions directly because: * no current event channel type is an exact fit for the intended behaviour. ECS_IPI is closest, but it disallows migration to other VCPUs which is not necessarily a requirement for Argo. * at the point of argo_init, allocation of an event channel is complicated by none of the guest VCPUs being initialized yet and the event channel logic expects that a valid event channel has a present VCPU. * at the point of signalling a notification, the VIRQ logic is already defensive: if d->vcpu[0] is NULL, the notification is just silently dropped, whereas the evtchn_send logic is not so defensive: vcpu[0] must not be NULL, otherwise a null pointer dereference occurs. Using a VIRQ removes the need for the guest to query to determine which event channel notifications will be delivered on. This is also likely to simplify establishing future L0/L1 nested hypervisor argo communication. Signed-off-by: Christopher Clark Tested-by: Chris Patterson Reviewed-by: Roger Pau Monné Release-acked-by: Juergen Gross --- xen/common/argo.c | 694 ++++++++++++++++++++++++++++++++++++++++++++- xen/common/event_channel.c | 2 +- xen/include/public/argo.h | 48 ++++ xen/include/public/xen.h | 2 +- xen/include/xen/event.h | 7 + xen/include/xlat.lst | 2 + 6 files changed, 751 insertions(+), 4 deletions(-) diff --git a/xen/common/argo.c b/xen/common/argo.c index f3e468dffd..45d1090778 100644 --- a/xen/common/argo.c +++ b/xen/common/argo.c @@ -38,13 +38,19 @@ CHECK_argo_register_ring; CHECK_argo_ring; CHECK_argo_ring_message_header; CHECK_argo_unregister_ring; +CHECK_argo_send_addr; #endif #define MAX_RINGS_PER_DOMAIN 128U +#define MAX_PENDING_PER_RING 32U /* All messages on the ring are padded to a multiple of the slot size. */ #define ROUNDUP_MESSAGE(a) ROUNDUP((a), XEN_ARGO_MSG_SLOT_SIZE) +/* The maximum size of a message that may be sent on the largest Argo ring. */ +#define MAX_ARGO_MESSAGE_SIZE ((XEN_ARGO_MAX_RING_SIZE) - \ + (sizeof(struct xen_argo_ring_message_header)) - ROUNDUP_MESSAGE(1)) + /* Number of PAGEs needed to hold a ring of a given size in bytes */ #define NPAGES_RING(ring_len) \ (ROUNDUP((ROUNDUP_MESSAGE(ring_len) + sizeof(xen_argo_ring_t)), PAGE_SIZE) \ @@ -52,9 +58,14 @@ CHECK_argo_unregister_ring; DEFINE_XEN_GUEST_HANDLE(xen_argo_addr_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_gfn_t); +DEFINE_XEN_GUEST_HANDLE(xen_argo_iov_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_register_ring_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_ring_t); +DEFINE_XEN_GUEST_HANDLE(xen_argo_send_addr_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_unregister_ring_t); +#ifdef CONFIG_COMPAT +DEFINE_COMPAT_HANDLE(compat_argo_iov_t); +#endif static bool __read_mostly opt_argo; static bool __read_mostly opt_argo_mac_permissive; @@ -362,6 +373,28 @@ find_ring_info(const struct domain *d, const struct argo_ring_id *id) return NULL; } +static struct argo_ring_info * +find_ring_info_by_match(const struct domain *d, xen_argo_port_t aport, + domid_t partner_id) +{ + struct argo_ring_id id; + struct argo_ring_info *ring_info; + + ASSERT(LOCKING_Read_rings_L2(d)); + + id.aport = aport; + id.domain_id = d->domain_id; + id.partner_id = partner_id; + + ring_info = find_ring_info(d, &id); + if ( ring_info ) + return ring_info; + + id.partner_id = XEN_ARGO_DOMID_ANY; + + return find_ring_info(d, &id); +} + static struct argo_send_info * find_send_info(const struct domain *d, const struct argo_ring_id *id) { @@ -393,6 +426,14 @@ find_send_info(const struct domain *d, const struct argo_ring_id *id) } static void +signal_domain(struct domain *d) +{ + argo_dprintk("signalling domid:%u\n", d->domain_id); + + send_guest_global_virq(d, VIRQ_ARGO); +} + +static void ring_unmap(const struct domain *d, struct argo_ring_info *ring_info) { unsigned int i; @@ -486,6 +527,387 @@ update_tx_ptr(const struct domain *d, struct argo_ring_info *ring_info, smp_wmb(); } +static int +memcpy_to_guest_ring(const struct domain *d, struct argo_ring_info *ring_info, + unsigned int offset, + const void *src, XEN_GUEST_HANDLE(uint8) src_hnd, + unsigned int len) +{ + unsigned int mfns_index = offset >> PAGE_SHIFT; + void *dst; + int ret; + unsigned int src_offset = 0; + + ASSERT(LOCKING_L3(d, ring_info)); + + offset &= ~PAGE_MASK; + + if ( len + offset > XEN_ARGO_MAX_RING_SIZE ) + return -EFAULT; + + while ( len ) + { + unsigned int head_len = (offset + len) > PAGE_SIZE ? PAGE_SIZE - offset + : len; + + ret = ring_map_page(d, ring_info, mfns_index, &dst); + if ( ret ) + return ret; + + if ( src ) + { + memcpy(dst + offset, src + src_offset, head_len); + src_offset += head_len; + } + else + { + if ( copy_from_guest(dst + offset, src_hnd, head_len) ) + return -EFAULT; + + guest_handle_add_offset(src_hnd, head_len); + } + + mfns_index++; + len -= head_len; + offset = 0; + } + + return 0; +} + +/* + * Use this with caution: rx_ptr is under guest control and may be bogus. + * See get_sanitized_ring for a safer alternative. + */ +static int +get_rx_ptr(const struct domain *d, struct argo_ring_info *ring_info, + uint32_t *rx_ptr) +{ + void *src; + xen_argo_ring_t *ringp; + int ret; + + ASSERT(LOCKING_L3(d, ring_info)); + + if ( !ring_info->nmfns || ring_info->nmfns < NPAGES_RING(ring_info->len) ) + return -EINVAL; + + ret = ring_map_page(d, ring_info, 0, &src); + if ( ret ) + return ret; + + ringp = (xen_argo_ring_t *)src; + + *rx_ptr = read_atomic(&ringp->rx_ptr); + + return 0; +} + +/* + * get_sanitized_ring creates a modified copy of the ring pointers where + * the rx_ptr is rounded up to ensure it is aligned, and then ring + * wrap is handled. Simplifies safe use of the rx_ptr for available + * space calculation. + */ +static int +get_sanitized_ring(const struct domain *d, xen_argo_ring_t *ring, + struct argo_ring_info *ring_info) +{ + uint32_t rx_ptr; + int ret; + + ASSERT(LOCKING_L3(d, ring_info)); + + ret = get_rx_ptr(d, ring_info, &rx_ptr); + if ( ret ) + return ret; + + ring->tx_ptr = ring_info->tx_ptr; + + rx_ptr = ROUNDUP_MESSAGE(rx_ptr); + if ( rx_ptr >= ring_info->len ) + rx_ptr = 0; + + ring->rx_ptr = rx_ptr; + + return 0; +} + +/* + * iov_count returns its count on success via an out variable to avoid + * potential for a negative return value to be used incorrectly + * (eg. coerced into an unsigned variable resulting in a large incorrect value) + */ +static int +iov_count(const xen_argo_iov_t *piov, unsigned int niov, + unsigned int *count) +{ + unsigned int sum_iov_lens = 0; + + if ( niov > XEN_ARGO_MAXIOV ) + return -EINVAL; + + for ( ; niov--; piov++ ) + { + /* valid iovs must have the padding field set to zero */ + if ( piov->pad ) + { + argo_dprintk("invalid iov: padding is not zero\n"); + return -EINVAL; + } + + /* check each to protect sum against integer overflow */ + if ( piov->iov_len > MAX_ARGO_MESSAGE_SIZE ) + { + argo_dprintk("invalid iov_len: too big (%u)>%llu\n", + piov->iov_len, MAX_ARGO_MESSAGE_SIZE); + return -EINVAL; + } + + sum_iov_lens += piov->iov_len; + + /* + * Again protect sum from integer overflow + * and ensure total msg size will be within bounds. + */ + if ( sum_iov_lens > MAX_ARGO_MESSAGE_SIZE ) + { + argo_dprintk("invalid iov series: total message too big\n"); + return -EMSGSIZE; + } + } + + *count = sum_iov_lens; + + return 0; +} + +static int +ringbuf_insert(const struct domain *d, struct argo_ring_info *ring_info, + const struct argo_ring_id *src_id, xen_argo_iov_t *iovs, + unsigned int niov, uint32_t message_type, + unsigned long *out_len) +{ + xen_argo_ring_t ring; + struct xen_argo_ring_message_header mh = { }; + int sp, ret; + unsigned int len = 0; + xen_argo_iov_t *piov; + XEN_GUEST_HANDLE(uint8) NULL_hnd = { }; + + ASSERT(LOCKING_L3(d, ring_info)); + + /* + * Obtain the total size of data to transmit -- sets the 'len' variable + * -- and sanity check that the iovs conform to size and number limits. + * Enforced below: no more than 'len' bytes of guest data + * (plus the message header) will be sent in this operation. + */ + ret = iov_count(iovs, niov, &len); + if ( ret ) + return ret; + + /* + * Upper bound check the message len against the ring size. + * The message must not fill the ring; there must be at least one slot + * remaining so we can distinguish a full ring from an empty one. + * iov_count has already verified: len <= MAX_ARGO_MESSAGE_SIZE. + */ + if ( ring_info->len <= (sizeof(struct xen_argo_ring_message_header) + + ROUNDUP_MESSAGE(len)) ) + return -EMSGSIZE; + + ret = get_sanitized_ring(d, &ring, ring_info); + if ( ret ) + return ret; + + argo_dprintk("ring.tx_ptr=%u ring.rx_ptr=%u ring len=%u" + " ring_info->tx_ptr=%u\n", + ring.tx_ptr, ring.rx_ptr, ring_info->len, ring_info->tx_ptr); + + if ( ring.rx_ptr == ring.tx_ptr ) + sp = ring_info->len; + else + { + sp = ring.rx_ptr - ring.tx_ptr; + if ( sp < 0 ) + sp += ring_info->len; + } + + /* + * Size bounds check against currently available space in the ring. + * Again: the message must not fill the ring leaving no space remaining. + */ + if ( (ROUNDUP_MESSAGE(len) + + sizeof(struct xen_argo_ring_message_header)) >= sp ) + { + argo_dprintk("EAGAIN\n"); + return -EAGAIN; + } + + mh.len = len + sizeof(struct xen_argo_ring_message_header); + mh.source.aport = src_id->aport; + mh.source.domain_id = src_id->domain_id; + mh.message_type = message_type; + + /* + * For this copy to the guest ring, tx_ptr is always 16-byte aligned + * and the message header is 16 bytes long. + */ + BUILD_BUG_ON( + sizeof(struct xen_argo_ring_message_header) != ROUNDUP_MESSAGE(1)); + + /* + * First data write into the destination ring: fixed size, message header. + * This cannot overrun because the available free space (value in 'sp') + * is checked above and must be at least this size. + */ + ret = memcpy_to_guest_ring(d, ring_info, + ring.tx_ptr + sizeof(xen_argo_ring_t), + &mh, NULL_hnd, sizeof(mh)); + if ( ret ) + { + gprintk(XENLOG_ERR, + "argo: failed to write message header to ring (vm%u:%x vm%u)\n", + ring_info->id.domain_id, ring_info->id.aport, + ring_info->id.partner_id); + + return ret; + } + + ring.tx_ptr += sizeof(mh); + if ( ring.tx_ptr == ring_info->len ) + ring.tx_ptr = 0; + + for ( piov = iovs; niov--; piov++ ) + { + XEN_GUEST_HANDLE(uint8) buf_hnd = piov->iov_hnd; + unsigned int iov_len = piov->iov_len; + + /* If no data is provided in this iov, moan and skip on to the next */ + if ( !iov_len ) + { + gprintk(XENLOG_WARNING, + "argo: no data iov_len=0 iov_hnd=%p ring (vm%u:%x vm%u)\n", + buf_hnd.p, ring_info->id.domain_id, ring_info->id.aport, + ring_info->id.partner_id); + + continue; + } + + if ( unlikely(!guest_handle_okay(buf_hnd, iov_len)) ) + { + gprintk(XENLOG_ERR, + "argo: bad iov handle [%p, %u] (vm%u:%x vm%u)\n", + buf_hnd.p, iov_len, + ring_info->id.domain_id, ring_info->id.aport, + ring_info->id.partner_id); + + return -EFAULT; + } + + sp = ring_info->len - ring.tx_ptr; + + /* Check: iov data size versus free space at the tail of the ring */ + if ( iov_len > sp ) + { + /* + * Second possible data write: ring-tail-wrap-write. + * Populate the ring tail and update the internal tx_ptr to handle + * wrapping at the end of ring. + * Size of data written here: sp + * which is the exact full amount of free space available at the + * tail of the ring, so this cannot overrun. + */ + ret = memcpy_to_guest_ring(d, ring_info, + ring.tx_ptr + sizeof(xen_argo_ring_t), + NULL, buf_hnd, sp); + if ( ret ) + { + gprintk(XENLOG_ERR, + "argo: failed to copy {%p, %d} (vm%u:%x vm%u)\n", + buf_hnd.p, sp, + ring_info->id.domain_id, ring_info->id.aport, + ring_info->id.partner_id); + + return ret; + } + + ring.tx_ptr = 0; + iov_len -= sp; + guest_handle_add_offset(buf_hnd, sp); + + ASSERT(iov_len <= ring_info->len); + } + + /* + * Third possible data write: all data remaining for this iov. + * Size of data written here: iov_len + * + * Case 1: if the ring-tail-wrap-write above was performed, then + * iov_len has been decreased by 'sp' and ring.tx_ptr is zero. + * + * We know from checking the result of iov_count: + * len + sizeof(message_header) <= ring_info->len + * We also know that len is the total of summing all iov_lens, so: + * iov_len <= len + * so by transitivity: + * iov_len <= len <= (ring_info->len - sizeof(msgheader)) + * and therefore: + * (iov_len + sizeof(msgheader) <= ring_info->len) && + * (ring.tx_ptr == 0) + * so this write cannot overrun here. + * + * Case 2: ring-tail-wrap-write above was not performed + * -> so iov_len is the guest-supplied value and: (iov_len <= sp) + * ie. less than available space at the tail of the ring: + * so this write cannot overrun. + */ + ret = memcpy_to_guest_ring(d, ring_info, + ring.tx_ptr + sizeof(xen_argo_ring_t), + NULL, buf_hnd, iov_len); + if ( ret ) + { + gprintk(XENLOG_ERR, + "argo: failed to copy [%p, %u] (vm%u:%x vm%u)\n", + buf_hnd.p, iov_len, ring_info->id.domain_id, + ring_info->id.aport, ring_info->id.partner_id); + + return ret; + } + + ring.tx_ptr += iov_len; + + if ( ring.tx_ptr == ring_info->len ) + ring.tx_ptr = 0; + } + + /* + * Finished writing data from all iovs into the ring: now need to round up + * tx_ptr to align to the next message boundary, and then wrap if necessary. + */ + ring.tx_ptr = ROUNDUP_MESSAGE(ring.tx_ptr); + + if ( ring.tx_ptr >= ring_info->len ) + ring.tx_ptr -= ring_info->len; + + update_tx_ptr(d, ring_info, ring.tx_ptr); + + /* + * At this point (and also on an error exit paths from this function) it is + * possible to unmap the ring_info, ie: + * ring_unmap(d, ring_info); + * but performance should be improved by not doing so, and retaining + * the mapping. + * An XSM policy control over level of confidentiality required + * versus performance cost could be added to decide that here. + */ + + *out_len = len; + + return ret; +} + static void wildcard_pending_list_remove(domid_t domain_id, struct pending_ent *ent) { @@ -506,6 +928,25 @@ wildcard_pending_list_remove(domid_t domain_id, struct pending_ent *ent) } static void +wildcard_pending_list_insert(domid_t domain_id, struct pending_ent *ent) +{ + struct domain *d = get_domain_by_id(domain_id); + + if ( !d ) + return; + + ASSERT(LOCKING_Read_L1); + + if ( d->argo ) + { + spin_lock(&d->argo->wildcard_L2_lock); + list_add(&ent->wildcard_node, &d->argo->wildcard_pend_list); + spin_unlock(&d->argo->wildcard_L2_lock); + } + put_domain(d); +} + +static void pending_remove_all(const struct domain *d, struct argo_ring_info *ring_info) { struct pending_ent *ent; @@ -525,6 +966,66 @@ pending_remove_all(const struct domain *d, struct argo_ring_info *ring_info) ring_info->npending = 0; } +static int +pending_queue(const struct domain *d, struct argo_ring_info *ring_info, + domid_t src_id, unsigned int len) +{ + struct pending_ent *ent; + + ASSERT(LOCKING_L3(d, ring_info)); + + if ( ring_info->npending >= MAX_PENDING_PER_RING ) + return -EBUSY; + + ent = xmalloc(struct pending_ent); + if ( !ent ) + return -ENOMEM; + + ent->len = len; + ent->domain_id = src_id; + ent->ring_info = ring_info; + + if ( ring_info->id.partner_id == XEN_ARGO_DOMID_ANY ) + wildcard_pending_list_insert(src_id, ent); + list_add(&ent->node, &ring_info->pending); + ring_info->npending++; + + return 0; +} + +static int +pending_requeue(const struct domain *d, struct argo_ring_info *ring_info, + domid_t src_id, unsigned int len) +{ + struct pending_ent *ent; + + ASSERT(LOCKING_L3(d, ring_info)); + + /* List structure is not modified here. Update len in a match if found. */ + list_for_each_entry(ent, &ring_info->pending, node) + { + if ( ent->domain_id == src_id ) + { + /* + * Reuse an existing queue entry for a notification rather than add + * another. If the existing entry is waiting for a smaller size than + * the current message then adjust the record to wait for the + * current (larger) size to be available before triggering a + * notification. + * This assists the waiting sender by ensuring that whenever a + * notification is triggered, there is sufficient space available + * for (at least) any one of the messages awaiting transmission. + */ + if ( ent->len < len ) + ent->len = len; + + return 0; + } + } + + return pending_queue(d, ring_info, src_id, len); +} + static void wildcard_rings_pending_remove(struct domain *d) { @@ -1092,6 +1593,98 @@ register_ring(struct domain *currd, return ret; } +static long +sendv(struct domain *src_d, xen_argo_addr_t *src_addr, + const xen_argo_addr_t *dst_addr, xen_argo_iov_t *iovs, unsigned int niov, + uint32_t message_type) +{ + struct domain *dst_d = NULL; + struct argo_ring_id src_id; + struct argo_ring_info *ring_info; + int ret = 0; + unsigned long len = 0; + + argo_dprintk("sendv: (%u:%x)->(%u:%x) niov:%u type:%x\n", + src_addr->domain_id, src_addr->aport, dst_addr->domain_id, + dst_addr->aport, niov, message_type); + + /* Check padding is zeroed. */ + if ( unlikely(src_addr->pad || dst_addr->pad) ) + return -EINVAL; + + if ( src_addr->domain_id == XEN_ARGO_DOMID_ANY ) + src_addr->domain_id = src_d->domain_id; + + /* No domain is currently authorized to send on behalf of another */ + if ( unlikely(src_addr->domain_id != src_d->domain_id) ) + return -EPERM; + + src_id.aport = src_addr->aport; + src_id.domain_id = src_d->domain_id; + src_id.partner_id = dst_addr->domain_id; + + dst_d = get_domain_by_id(dst_addr->domain_id); + if ( !dst_d ) + return -ESRCH; + + read_lock(&L1_global_argo_rwlock); + + if ( !src_d->argo ) + { + ret = -ENODEV; + goto out_unlock; + } + + if ( !dst_d->argo ) + { + argo_dprintk("!dst_d->argo, ECONNREFUSED\n"); + ret = -ECONNREFUSED; + goto out_unlock; + } + + read_lock(&dst_d->argo->rings_L2_rwlock); + + ring_info = find_ring_info_by_match(dst_d, dst_addr->aport, + src_id.domain_id); + if ( !ring_info ) + { + gprintk(XENLOG_ERR, + "argo: vm%u connection refused, src (vm%u:%x) dst (vm%u:%x)\n", + current->domain->domain_id, src_id.domain_id, src_id.aport, + dst_addr->domain_id, dst_addr->aport); + + ret = -ECONNREFUSED; + } + else + { + spin_lock(&ring_info->L3_lock); + + ret = ringbuf_insert(dst_d, ring_info, &src_id, iovs, niov, + message_type, &len); + if ( ret == -EAGAIN ) + { + argo_dprintk("argo_ringbuf_sendv failed, EAGAIN\n"); + /* requeue to issue a notification when space is there */ + ret = pending_requeue(dst_d, ring_info, src_id.domain_id, len); + } + + spin_unlock(&ring_info->L3_lock); + } + + read_unlock(&dst_d->argo->rings_L2_rwlock); + + out_unlock: + read_unlock(&L1_global_argo_rwlock); + + if ( ret >= 0 ) + signal_domain(dst_d); + + if ( dst_d ) + put_domain(dst_d); + + return ( ret < 0 ) ? ret : len; +} + long do_argo_op(unsigned int cmd, XEN_GUEST_HANDLE_PARAM(void) arg1, XEN_GUEST_HANDLE_PARAM(void) arg2, unsigned long raw_arg3, @@ -1155,6 +1748,51 @@ do_argo_op(unsigned int cmd, XEN_GUEST_HANDLE_PARAM(void) arg1, break; } + case XEN_ARGO_OP_sendv: + { + xen_argo_send_addr_t send_addr; + xen_argo_iov_t iovs[XEN_ARGO_MAXIOV]; + unsigned int niov; + + XEN_GUEST_HANDLE_PARAM(xen_argo_send_addr_t) send_addr_hnd = + guest_handle_cast(arg1, xen_argo_send_addr_t); + XEN_GUEST_HANDLE_PARAM(xen_argo_iov_t) iovs_hnd = + guest_handle_cast(arg2, xen_argo_iov_t); + /* arg3 is niov */ + /* arg4 is message_type. Must be a 32-bit value. */ + + /* XEN_ARGO_MAXIOV value determines size of iov array on stack */ + BUILD_BUG_ON(XEN_ARGO_MAXIOV > 8); + + rc = copy_from_guest(&send_addr, send_addr_hnd, 1) ? -EFAULT : 0; + if ( rc ) + { + rc = -EFAULT; + break; + } + + /* + * Reject niov above maximum limit or message_types that are outside + * 32 bit range. + */ + if ( unlikely((arg3 > XEN_ARGO_MAXIOV) || (arg4 != (uint32_t)arg4)) ) + { + rc = -EINVAL; + break; + } + niov = array_index_nospec(arg3, XEN_ARGO_MAXIOV + 1); + + rc = copy_from_guest(iovs, iovs_hnd, niov) ? -EFAULT : 0; + if ( rc ) + { + rc = -EFAULT; + break; + } + + rc = sendv(currd, &send_addr.src, &send_addr.dst, iovs, niov, arg4); + break; + } + default: rc = -EOPNOTSUPP; break; @@ -1171,8 +1809,60 @@ compat_argo_op(unsigned int cmd, XEN_GUEST_HANDLE_PARAM(void) arg1, XEN_GUEST_HANDLE_PARAM(void) arg2, unsigned long arg3, unsigned long arg4) { - /* Forward all ops to the native handler */ - return do_argo_op(cmd, arg1, arg2, arg3, arg4); + struct domain *currd = current->domain; + long rc; + xen_argo_send_addr_t send_addr; + xen_argo_iov_t iovs[XEN_ARGO_MAXIOV]; + compat_argo_iov_t compat_iovs[XEN_ARGO_MAXIOV]; + unsigned int i, niov; + XEN_GUEST_HANDLE_PARAM(xen_argo_send_addr_t) send_addr_hnd; + + /* check XEN_ARGO_MAXIOV as it sizes stack arrays: iovs, compat_iovs */ + BUILD_BUG_ON(XEN_ARGO_MAXIOV > 8); + + /* Forward all ops besides sendv to the native handler. */ + if ( cmd != XEN_ARGO_OP_sendv ) + return do_argo_op(cmd, arg1, arg2, arg3, arg4); + + if ( unlikely(!opt_argo) ) + return -EOPNOTSUPP; + + argo_dprintk("->compat_argo_op(%u,%p,%p,%lu,0x%lx)\n", cmd, + (void *)arg1.p, (void *)arg2.p, arg3, arg4); + + send_addr_hnd = guest_handle_cast(arg1, xen_argo_send_addr_t); + /* arg2: iovs, arg3: niov, arg4: message_type */ + + rc = copy_from_guest(&send_addr, send_addr_hnd, 1) ? -EFAULT : 0; + if ( rc ) + goto out; + + if ( unlikely(arg3 > XEN_ARGO_MAXIOV) ) + { + rc = -EINVAL; + goto out; + } + niov = array_index_nospec(arg3, XEN_ARGO_MAXIOV + 1); + + rc = copy_from_guest(compat_iovs, arg2, niov) ? -EFAULT : 0; + if ( rc ) + goto out; + + for ( i = 0; i < niov; i++ ) + { +#define XLAT_argo_iov_HNDL_iov_hnd(_d_, _s_) \ + guest_from_compat_handle((_d_)->iov_hnd, (_s_)->iov_hnd) + + XLAT_argo_iov(&iovs[i], &compat_iovs[i]); + +#undef XLAT_argo_iov_HNDL_iov_hnd + } + + rc = sendv(currd, &send_addr.src, &send_addr.dst, iovs, niov, arg4); + out: + argo_dprintk("<-compat_argo_op(%u)=%ld\n", cmd, rc); + + return rc; } #endif diff --git a/xen/common/event_channel.c b/xen/common/event_channel.c index f34d4f039d..6fbe346490 100644 --- a/xen/common/event_channel.c +++ b/xen/common/event_channel.c @@ -746,7 +746,7 @@ void send_guest_vcpu_virq(struct vcpu *v, uint32_t virq) spin_unlock_irqrestore(&v->virq_lock, flags); } -static void send_guest_global_virq(struct domain *d, uint32_t virq) +void send_guest_global_virq(struct domain *d, uint32_t virq) { unsigned long flags; int port; diff --git a/xen/include/public/argo.h b/xen/include/public/argo.h index 29856df34a..ee3801c794 100644 --- a/xen/include/public/argo.h +++ b/xen/include/public/argo.h @@ -42,6 +42,22 @@ typedef uint32_t xen_argo_port_t; /* gfn type: 64-bit fixed-width on all architectures */ typedef uint64_t xen_argo_gfn_t; +/* + * XEN_ARGO_MAXIOV : maximum number of iovs accepted in a single sendv. + * Caution is required if this value is increased: this determines the size of + * an array of xen_argo_iov_t structs on the hypervisor stack, so could cause + * stack overflow if the value is too large. + * The Linux Argo driver never passes more than two iovs. +*/ +#define XEN_ARGO_MAXIOV 8U + +typedef struct xen_argo_iov +{ + XEN_GUEST_HANDLE(uint8) iov_hnd; + uint32_t iov_len; + uint32_t pad; +} xen_argo_iov_t; + typedef struct xen_argo_addr { xen_argo_port_t aport; @@ -49,6 +65,12 @@ typedef struct xen_argo_addr uint16_t pad; } xen_argo_addr_t; +typedef struct xen_argo_send_addr +{ + struct xen_argo_addr src; + struct xen_argo_addr dst; +} xen_argo_send_addr_t; + typedef struct xen_argo_ring { /* Guests should use atomic operations to access rx_ptr */ @@ -149,4 +171,30 @@ struct xen_argo_ring_message_header */ #define XEN_ARGO_OP_unregister_ring 2 +/* + * XEN_ARGO_OP_sendv + * + * Send a list of buffers contained in iovs. + * + * The send address struct specifies the source and destination addresses + * for the message being sent, which are used to find the destination ring: + * Xen first looks for a most-specific match with a registered ring with + * (id.addr == dst) and (id.partner == sending_domain) ; + * if that fails, it then looks for a wildcard match (aka multicast receiver) + * where (id.addr == dst) and (id.partner == DOMID_ANY). + * + * For each iov entry, send iov_len bytes from iov_base to the destination ring. + * If insufficient space exists in the destination ring, it will return -EAGAIN + * and Xen will notify the caller when sufficient space becomes available. + * + * The message type is a 32-bit data field available to communicate message + * context data (eg. kernel-to-kernel, rather than application layer). + * + * arg1: XEN_GUEST_HANDLE(xen_argo_send_addr_t) source and dest addresses + * arg2: XEN_GUEST_HANDLE(xen_argo_iov_t) iovs + * arg3: unsigned long niov + * arg4: unsigned long message type (32-bit value) + */ +#define XEN_ARGO_OP_sendv 3 + #endif diff --git a/xen/include/public/xen.h b/xen/include/public/xen.h index b3f6491764..ccdffc0ad1 100644 --- a/xen/include/public/xen.h +++ b/xen/include/public/xen.h @@ -178,7 +178,7 @@ DEFINE_XEN_GUEST_HANDLE(xen_ulong_t); #define VIRQ_CON_RING 8 /* G. (DOM0) Bytes received on console */ #define VIRQ_PCPU_STATE 9 /* G. (DOM0) PCPU state changed */ #define VIRQ_MEM_EVENT 10 /* G. (DOM0) A memory event has occurred */ -#define VIRQ_XC_RESERVED 11 /* G. Reserved for XenClient */ +#define VIRQ_ARGO 11 /* G. Argo interdomain message notification */ #define VIRQ_ENOMEM 12 /* G. (DOM0) Low on heap memory */ #define VIRQ_XENPMU 13 /* V. PMC interrupt */ diff --git a/xen/include/xen/event.h b/xen/include/xen/event.h index ebb879e88d..46508878bb 100644 --- a/xen/include/xen/event.h +++ b/xen/include/xen/event.h @@ -29,6 +29,13 @@ void send_guest_vcpu_virq(struct vcpu *v, uint32_t virq); void send_global_virq(uint32_t virq); /* + * send_guest_global_virq: + * @d: Domain to which VIRQ should be sent + * @virq: Virtual IRQ number (VIRQ_*), must be global + */ +void send_guest_global_virq(struct domain *d, uint32_t virq); + +/* * sent_global_virq_handler: Set a global VIRQ handler. * @d: New target domain for this VIRQ * @virq: Virtual IRQ number (VIRQ_*), must be global diff --git a/xen/include/xlat.lst b/xen/include/xlat.lst index ee7dffc7e8..0d65f6a2fd 100644 --- a/xen/include/xlat.lst +++ b/xen/include/xlat.lst @@ -31,9 +31,11 @@ ! mc_physcpuinfo arch-x86/xen-mca.h ? page_offline_action arch-x86/xen-mca.h ? argo_addr argo.h +! argo_iov argo.h ? argo_register_ring argo.h ? argo_ring argo.h ? argo_ring_message_header argo.h +? argo_send_addr argo.h ? argo_unregister_ring argo.h ? evtchn_alloc_unbound event_channel.h ? evtchn_bind_interdomain event_channel.h -- generated by git-patchbot for /home/xen/git/xen.git#master --===============7267071571842286486== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============7267071571842286486==-- From xen-changelog-bounces@lists.xenproject.org Mon Feb 18 10:46:19 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 18 Feb 2019 10:46:19 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgRG-0004vb-Ve; Mon, 18 Feb 2019 10:46:18 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgRF-0004vO-6f for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:46:17 +0000 X-Inumbo-ID: 6a10a026-336a-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 6a10a026-336a-11e9-bc90-bc764e045a96; Mon, 18 Feb 2019 10:46:15 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgRC-00034r-Td for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:46:14 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gvgRC-0003UQ-RI for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:46:14 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 10:46:14 +0000 Subject: [Xen-changelog] [xen master] argo: implement the notify op X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============8857339067168029086==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============8857339067168029086== Content-Type: text/plain commit 64b9c3422b81752036b4222e1f7229632f77315c Author: Christopher Clark AuthorDate: Wed Feb 6 09:55:00 2019 +0100 Commit: Jan Beulich CommitDate: Thu Feb 7 14:24:55 2019 +0100 argo: implement the notify op Queries for data about space availability in registered rings and causes notification to be sent when space has become available. The hypercall op populates a supplied data structure with information about ring state and if insufficient space is currently available in a given ring, the hypervisor will record the domain's expressed interest and notify it when it observes that space has become available. Checks for free space occur when this notify op is invoked, so it may be intentionally invoked with no data structure to populate (ie. a NULL argument) to trigger such a check and consequent notifications. Limit the maximum number of notify requests in a single operation to a simple fixed limit of 256. Signed-off-by: Christopher Clark Tested-by: Chris Patterson Reviewed-by: Roger Pau Monné Release-acked-by: Juergen Gross --- xen/common/argo.c | 371 ++++++++++++++++++++++++++++++++++++++++++++++ xen/include/public/argo.h | 67 +++++++++ xen/include/xlat.lst | 2 + 3 files changed, 440 insertions(+) diff --git a/xen/common/argo.c b/xen/common/argo.c index 45d1090778..dce90ee302 100644 --- a/xen/common/argo.c +++ b/xen/common/argo.c @@ -36,12 +36,17 @@ CHECK_argo_addr; #define CHECK_argo_addr struct xen_argo_addr CHECK_argo_register_ring; CHECK_argo_ring; +CHECK_argo_ring_data_ent; +#undef CHECK_argo_ring_data_ent +#define CHECK_argo_ring_data_ent struct xen_argo_ring_data_ent +CHECK_argo_ring_data; CHECK_argo_ring_message_header; CHECK_argo_unregister_ring; CHECK_argo_send_addr; #endif #define MAX_RINGS_PER_DOMAIN 128U +#define MAX_NOTIFY_COUNT 256U #define MAX_PENDING_PER_RING 32U /* All messages on the ring are padded to a multiple of the slot size. */ @@ -61,6 +66,8 @@ DEFINE_XEN_GUEST_HANDLE(xen_argo_gfn_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_iov_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_register_ring_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_ring_t); +DEFINE_XEN_GUEST_HANDLE(xen_argo_ring_data_t); +DEFINE_XEN_GUEST_HANDLE(xen_argo_ring_data_ent_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_send_addr_t); DEFINE_XEN_GUEST_HANDLE(xen_argo_unregister_ring_t); #ifdef CONFIG_COMPAT @@ -434,6 +441,18 @@ signal_domain(struct domain *d) } static void +signal_domid(domid_t domain_id) +{ + struct domain *d = get_domain_by_id(domain_id); + + if ( !d ) + return; + + signal_domain(d); + put_domain(d); +} + +static void ring_unmap(const struct domain *d, struct argo_ring_info *ring_info) { unsigned int i; @@ -633,6 +652,66 @@ get_sanitized_ring(const struct domain *d, xen_argo_ring_t *ring, return 0; } +static unsigned int +ringbuf_payload_space(const struct domain *d, struct argo_ring_info *ring_info) +{ + xen_argo_ring_t ring; + unsigned int len; + int ret; + + ASSERT(LOCKING_L3(d, ring_info)); + + len = ring_info->len; + if ( !len ) + return 0; + + if ( get_sanitized_ring(d, &ring, ring_info) ) + return 0; + + argo_dprintk("sanitized ringbuf_payload_space: tx_ptr=%u rx_ptr=%u\n", + ring.tx_ptr, ring.rx_ptr); + + /* + * rx_ptr == tx_ptr means that the ring has been emptied. + * See message size checking logic in the entry to ringbuf_insert which + * ensures that there is always one message slot of size ROUNDUP_MESSAGE(1) + * left available, preventing a ring from being entirely filled. + * This ensures that matching ring indexes always indicate an empty ring + * and never a full one. + */ + ret = ring.rx_ptr - ring.tx_ptr; + if ( ret <= 0 ) + ret += len; + + /* + * In a sanitized ring, we can rely on: + * (rx_ptr < ring_info->len) && + * (tx_ptr < ring_info->len) && + * (ring_info->len <= XEN_ARGO_MAX_RING_SIZE) + * + * and since: XEN_ARGO_MAX_RING_SIZE < INT32_MAX + * therefore right here: ret < INT32_MAX + * and we are safe to return it as a unsigned value from this function. + * The subtractions below cannot increase its value. + */ + + /* + * The maximum size payload for a message that will be accepted is: + * (the available space between the ring indexes) + * minus (space for a message header) + * minus (space for one message slot) + * since ringbuf_insert requires that one message slot be left + * unfilled, to avoid filling the ring to capacity and confusing a full + * ring with an empty one. + * Since the ring indexes are sanitized, the value in ret is aligned, so + * the simple subtraction here works to return the aligned value needed: + */ + ret -= sizeof(struct xen_argo_ring_message_header); + ret -= ROUNDUP_MESSAGE(1); + + return (ret < 0) ? 0 : ret; +} + /* * iov_count returns its count on success via an out variable to avoid * potential for a negative return value to be used incorrectly @@ -966,6 +1045,64 @@ pending_remove_all(const struct domain *d, struct argo_ring_info *ring_info) ring_info->npending = 0; } +static void +pending_notify(struct list_head *to_notify) +{ + struct pending_ent *ent; + + ASSERT(LOCKING_Read_L1); + + /* Sending signals for all ents in this list, draining until it is empty. */ + while ( (ent = list_first_entry_or_null(to_notify, struct pending_ent, + node)) ) + { + list_del(&ent->node); + signal_domid(ent->domain_id); + xfree(ent); + } +} + +static void +pending_find(const struct domain *d, struct argo_ring_info *ring_info, + unsigned int payload_space, struct list_head *to_notify) +{ + struct pending_ent *ent, *next; + + ASSERT(LOCKING_Read_rings_L2(d)); + + /* + * TODO: Current policy here is to signal _all_ of the waiting domains + * interested in sending a message of size less than payload_space. + * + * This is likely to be suboptimal, since once one of them has added + * their message to the ring, there may well be insufficient room + * available for any of the others to transmit, meaning that they were + * woken in vain, which created extra work just to requeue their wait. + * + * Retain this simple policy for now since it at least avoids starving a + * domain of available space notifications because of a policy that only + * notified other domains instead. Improvement may be possible; + * investigation required. + */ + spin_lock(&ring_info->L3_lock); + + /* Remove matching ents from the ring list, and add them to "to_notify" */ + list_for_each_entry_safe(ent, next, &ring_info->pending, node) + { + if ( payload_space >= ent->len ) + { + if ( ring_info->id.partner_id == XEN_ARGO_DOMID_ANY ) + wildcard_pending_list_remove(ent->domain_id, ent); + + list_del(&ent->node); + ring_info->npending--; + list_add(&ent->node, to_notify); + } + } + + spin_unlock(&ring_info->L3_lock); +} + static int pending_queue(const struct domain *d, struct argo_ring_info *ring_info, domid_t src_id, unsigned int len) @@ -1027,6 +1164,29 @@ pending_requeue(const struct domain *d, struct argo_ring_info *ring_info, } static void +pending_cancel(const struct domain *d, struct argo_ring_info *ring_info, + domid_t src_id) +{ + struct pending_ent *ent, *next; + + ASSERT(LOCKING_L3(d, ring_info)); + + /* Remove all ents where domain_id matches src_id from the ring's list. */ + list_for_each_entry_safe(ent, next, &ring_info->pending, node) + { + if ( ent->domain_id == src_id ) + { + /* For wildcard rings, remove each from their wildcard list too. */ + if ( ring_info->id.partner_id == XEN_ARGO_DOMID_ANY ) + wildcard_pending_list_remove(ent->domain_id, ent); + list_del(&ent->node); + xfree(ent); + ring_info->npending--; + } + } +} + +static void wildcard_rings_pending_remove(struct domain *d) { struct pending_ent *ent; @@ -1158,6 +1318,99 @@ partner_rings_remove(struct domain *src_d) } static int +fill_ring_data(const struct domain *currd, + XEN_GUEST_HANDLE(xen_argo_ring_data_ent_t) data_ent_hnd) +{ + xen_argo_ring_data_ent_t ent; + struct domain *dst_d; + struct argo_ring_info *ring_info; + int ret = 0; + + ASSERT(currd == current->domain); + ASSERT(LOCKING_Read_L1); + + if ( __copy_from_guest(&ent, data_ent_hnd, 1) ) + return -EFAULT; + + argo_dprintk("fill_ring_data: ent.ring.domain=%u,ent.ring.aport=%x\n", + ent.ring.domain_id, ent.ring.aport); + + ent.flags = 0; + + dst_d = get_domain_by_id(ent.ring.domain_id); + if ( !dst_d || !dst_d->argo ) + goto out; + + read_lock(&dst_d->argo->rings_L2_rwlock); + + ring_info = find_ring_info_by_match(dst_d, ent.ring.aport, + currd->domain_id); + if ( ring_info ) + { + unsigned int space_avail; + + ent.flags |= XEN_ARGO_RING_EXISTS; + + spin_lock(&ring_info->L3_lock); + + ent.max_message_size = ring_info->len - + sizeof(struct xen_argo_ring_message_header) - + ROUNDUP_MESSAGE(1); + + if ( ring_info->id.partner_id == XEN_ARGO_DOMID_ANY ) + ent.flags |= XEN_ARGO_RING_SHARED; + + space_avail = ringbuf_payload_space(dst_d, ring_info); + + argo_dprintk("fill_ring_data: aport=%x space_avail=%u" + " space_wanted=%u\n", + ring_info->id.aport, space_avail, ent.space_required); + + /* Do not queue a notification for an unachievable size */ + if ( ent.space_required > ent.max_message_size ) + ent.flags |= XEN_ARGO_RING_EMSGSIZE; + else if ( space_avail >= ent.space_required ) + { + pending_cancel(dst_d, ring_info, currd->domain_id); + ent.flags |= XEN_ARGO_RING_SUFFICIENT; + } + else + { + ret = pending_requeue(dst_d, ring_info, currd->domain_id, + ent.space_required); + if ( ret == -EBUSY ) + { + /* + * Too many other domains are already awaiting notification + * about available space on this ring. Indicate this state via + * flag. No need to return an error to the caller; allow the + * processing of queries about other rings to continue. + */ + ent.flags |= XEN_ARGO_RING_EBUSY; + ret = 0; + } + } + + spin_unlock(&ring_info->L3_lock); + + if ( space_avail == ent.max_message_size ) + ent.flags |= XEN_ARGO_RING_EMPTY; + + } + read_unlock(&dst_d->argo->rings_L2_rwlock); + + out: + if ( dst_d ) + put_domain(dst_d); + + if ( !ret && (__copy_field_to_guest(data_ent_hnd, &ent, flags) || + __copy_field_to_guest(data_ent_hnd, &ent, max_message_size)) ) + return -EFAULT; + + return ret; +} + +static int find_ring_mfn(struct domain *d, gfn_t gfn, mfn_t *mfn) { struct page_info *page; @@ -1593,6 +1846,109 @@ register_ring(struct domain *currd, return ret; } +static void +notify_ring(const struct domain *d, struct argo_ring_info *ring_info, + struct list_head *to_notify) +{ + unsigned int space; + + ASSERT(LOCKING_Read_rings_L2(d)); + + spin_lock(&ring_info->L3_lock); + + if ( ring_info->len ) + space = ringbuf_payload_space(d, ring_info); + else + space = 0; + + spin_unlock(&ring_info->L3_lock); + + if ( space ) + pending_find(d, ring_info, space, to_notify); +} + +static void +notify_check_pending(struct domain *d) +{ + unsigned int i; + LIST_HEAD(to_notify); + + ASSERT(LOCKING_Read_L1); + + read_lock(&d->argo->rings_L2_rwlock); + + /* Walk all rings, call notify_ring on each to populate to_notify list */ + for ( i = 0; i < ARGO_HASHTABLE_SIZE; i++ ) + { + struct argo_ring_info *ring_info, *next; + struct list_head *bucket = &d->argo->ring_hash[i]; + + list_for_each_entry_safe(ring_info, next, bucket, node) + notify_ring(d, ring_info, &to_notify); + } + + read_unlock(&d->argo->rings_L2_rwlock); + + if ( !list_empty(&to_notify) ) + pending_notify(&to_notify); +} + +static long +notify(struct domain *currd, + XEN_GUEST_HANDLE_PARAM(xen_argo_ring_data_t) ring_data_hnd) +{ + XEN_GUEST_HANDLE(xen_argo_ring_data_ent_t) ent_hnd; + xen_argo_ring_data_t ring_data; + int ret = 0; + + ASSERT(currd == current->domain); + + read_lock(&L1_global_argo_rwlock); + + if ( !currd->argo ) + { + argo_dprintk("!d->argo, ENODEV\n"); + ret = -ENODEV; + goto out; + } + + notify_check_pending(currd); + + if ( guest_handle_is_null(ring_data_hnd) ) + goto out; + + ret = copy_from_guest(&ring_data, ring_data_hnd, 1) ? -EFAULT : 0; + if ( ret ) + goto out; + + if ( ring_data.nent > MAX_NOTIFY_COUNT ) + { + gprintk(XENLOG_ERR, "argo: notify entry count(%u) exceeds max(%u)\n", + ring_data.nent, MAX_NOTIFY_COUNT); + ret = -EACCES; + goto out; + } + + ent_hnd = guest_handle_for_field(ring_data_hnd, + xen_argo_ring_data_ent_t, data[0]); + if ( unlikely(!guest_handle_okay(ent_hnd, ring_data.nent)) ) + { + ret = -EFAULT; + goto out; + } + + while ( !ret && ring_data.nent-- ) + { + ret = fill_ring_data(currd, ent_hnd); + guest_handle_add_offset(ent_hnd, 1); + } + + out: + read_unlock(&L1_global_argo_rwlock); + + return ret; +} + static long sendv(struct domain *src_d, xen_argo_addr_t *src_addr, const xen_argo_addr_t *dst_addr, xen_argo_iov_t *iovs, unsigned int niov, @@ -1793,6 +2149,21 @@ do_argo_op(unsigned int cmd, XEN_GUEST_HANDLE_PARAM(void) arg1, break; } + case XEN_ARGO_OP_notify: + { + XEN_GUEST_HANDLE_PARAM(xen_argo_ring_data_t) ring_data_hnd = + guest_handle_cast(arg1, xen_argo_ring_data_t); + + if ( unlikely((!guest_handle_is_null(arg2)) || arg3 || arg4) ) + { + rc = -EINVAL; + break; + } + + rc = notify(currd, ring_data_hnd); + break; + } + default: rc = -EOPNOTSUPP; break; diff --git a/xen/include/public/argo.h b/xen/include/public/argo.h index ee3801c794..cc603d395d 100644 --- a/xen/include/public/argo.h +++ b/xen/include/public/argo.h @@ -107,6 +107,42 @@ typedef struct xen_argo_unregister_ring /* Messages on the ring are padded to a multiple of this size. */ #define XEN_ARGO_MSG_SLOT_SIZE 0x10 +/* + * Notify flags + */ +/* Ring exists */ +#define XEN_ARGO_RING_EXISTS (1U << 0) +/* Ring is shared, not unicast */ +#define XEN_ARGO_RING_SHARED (1U << 1) +/* Ring is empty */ +#define XEN_ARGO_RING_EMPTY (1U << 2) +/* Sufficient space to queue space_required bytes might exist */ +#define XEN_ARGO_RING_SUFFICIENT (1U << 3) +/* Insufficient ring size for space_required bytes */ +#define XEN_ARGO_RING_EMSGSIZE (1U << 4) +/* Too many domains waiting for available space signals for this ring */ +#define XEN_ARGO_RING_EBUSY (1U << 5) + +typedef struct xen_argo_ring_data_ent +{ + struct xen_argo_addr ring; + uint16_t flags; + uint16_t pad; + uint32_t space_required; + uint32_t max_message_size; +} xen_argo_ring_data_ent_t; + +typedef struct xen_argo_ring_data +{ + uint32_t nent; + uint32_t pad; +#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L + struct xen_argo_ring_data_ent data[]; +#elif defined(__GNUC__) + struct xen_argo_ring_data_ent data[0]; +#endif +} xen_argo_ring_data_t; + struct xen_argo_ring_message_header { uint32_t len; @@ -197,4 +233,35 @@ struct xen_argo_ring_message_header */ #define XEN_ARGO_OP_sendv 3 +/* + * XEN_ARGO_OP_notify + * + * Asks Xen for information about other rings in the system. + * + * ent->ring is the xen_argo_addr_t of the ring you want information on. + * Uses the same ring matching rules as XEN_ARGO_OP_sendv. + * + * ent->space_required : if this field is not null then Xen will check + * that there is space in the destination ring for this many bytes of payload. + * If the ring is too small for the requested space_required, it will set the + * XEN_ARGO_RING_EMSGSIZE flag on return. + * If sufficient space is available, it will set XEN_ARGO_RING_SUFFICIENT + * and CANCEL any pending notification for that ent->ring; otherwise it + * will schedule a notification event and the flag will not be set. + * + * These flags are set by Xen when notify replies: + * XEN_ARGO_RING_EXISTS ring exists + * XEN_ARGO_RING_SHARED ring is registered for wildcard partner + * XEN_ARGO_RING_EMPTY ring is empty + * XEN_ARGO_RING_SUFFICIENT sufficient space for space_required is there + * XEN_ARGO_RING_EMSGSIZE space_required is too large for the ring size + * XEN_ARGO_RING_EBUSY too many domains waiting for available space signals + * + * arg1: XEN_GUEST_HANDLE(xen_argo_ring_data_t) ring_data (may be NULL) + * arg2: NULL + * arg3: 0 (ZERO) + * arg4: 0 (ZERO) + */ +#define XEN_ARGO_OP_notify 4 + #endif diff --git a/xen/include/xlat.lst b/xen/include/xlat.lst index 0d65f6a2fd..e330f72580 100644 --- a/xen/include/xlat.lst +++ b/xen/include/xlat.lst @@ -34,6 +34,8 @@ ! argo_iov argo.h ? argo_register_ring argo.h ? argo_ring argo.h +? argo_ring_data argo.h +? argo_ring_data_ent argo.h ? argo_ring_message_header argo.h ? argo_send_addr argo.h ? argo_unregister_ring argo.h -- generated by git-patchbot for /home/xen/git/xen.git#master --===============8857339067168029086== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============8857339067168029086==-- From xen-changelog-bounces@lists.xenproject.org Mon Feb 18 10:46:30 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 18 Feb 2019 10:46:30 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgRS-0004wz-1G; Mon, 18 Feb 2019 10:46:30 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgRQ-0004ws-Nm for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:46:28 +0000 X-Inumbo-ID: 70211d6e-336a-11e9-b108-a3b6dcee54db Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 70211d6e-336a-11e9-b108-a3b6dcee54db; Mon, 18 Feb 2019 10:46:25 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgRN-000355-3k for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:46:25 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gvgRN-0003Uw-1M for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:46:25 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 10:46:25 +0000 Subject: [Xen-changelog] [xen master] xsm, argo: XSM control for argo register X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: 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(envelope-from ) id 1gvgRc-0004yW-7E for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:46:40 +0000 X-Inumbo-ID: 76365840-336a-11e9-ab5f-ef990e38f5f2 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 76365840-336a-11e9-ab5f-ef990e38f5f2; Mon, 18 Feb 2019 10:46:35 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgRX-00035D-AH for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:46:35 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gvgRX-0003Vn-7g for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:46:35 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 10:46:35 +0000 Subject: [Xen-changelog] [xen master] xsm, argo: XSM control for argo message send operation X-BeenThere: xen-changelog@lists.xenproject.org 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(unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 7c4e0659-336a-11e9-bc90-bc764e045a96; Mon, 18 Feb 2019 10:46:45 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgRh-00035U-Gd for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:46:45 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gvgRh-0003XE-E5 for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:46:45 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 10:46:45 +0000 Subject: [Xen-changelog] [xen master] xsm, argo: XSM control for any access to argo by a domain X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org 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886db9fc-336a-11e9-bc90-bc764e045a96; Mon, 18 Feb 2019 10:47:06 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgS1-00035y-SY for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:47:05 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gvgS1-0003YR-Pz for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:47:05 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 10:47:05 +0000 Subject: [Xen-changelog] [xen master] MAINTAINERS: add new section for Argo and self as maintainer X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0179896638993457414==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============0179896638993457414== Content-Type: text/plain commit d39216106b1a50dccaa224e15f7a30a1cd32171e Author: Christopher Clark AuthorDate: Wed Feb 6 09:56:00 2019 +0100 Commit: Jan Beulich CommitDate: Thu Feb 7 14:26:57 2019 +0100 MAINTAINERS: add new section for Argo and self as maintainer Signed-off-by: Christopher Clark Reviewed-by: Roger Pau Monné Release-acked-by: Juergen Gross --- MAINTAINERS | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index e99d39eb47..a0cda4f7a1 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -158,6 +158,13 @@ S: Supported F: xen/arch/x86/hvm/svm/ F: xen/arch/x86/cpu/vpmu_amd.c +ARGO +M: Christopher Clark +S: Maintained +F: xen/include/public/argo.h +F: xen/include/xen/argo.h +F: xen/common/argo.c + ARINC653 SCHEDULER M: Josh Whitehead M: Robert VanVossen -- generated by git-patchbot for 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Mon, 18 Feb 2019 10:47:20 +0000 X-Inumbo-ID: 8e80c5e8-336a-11e9-99d3-07d0b4d7ab02 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 8e80c5e8-336a-11e9-99d3-07d0b4d7ab02; Mon, 18 Feb 2019 10:47:16 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgSC-00037W-2O for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:47:16 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gvgSB-0003Z4-Vt for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:47:15 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 10:47:15 +0000 Subject: [Xen-changelog] [xen master] SUPPORT.md : add new entry for the Argo feature X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============8886210209256360520==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============8886210209256360520== Content-Type: text/plain commit 7da53237c5699bb0715c421f8b635ca3148de7d9 Author: Christopher Clark AuthorDate: Wed Feb 6 10:04:00 2019 +0100 Commit: Jan Beulich CommitDate: Thu Feb 7 14:27:04 2019 +0100 SUPPORT.md : add new entry for the Argo feature Status: Experimental Signed-off-by: Christopher Clark Reviewed-by: Roger Pau Monné Release-acked-by: Juergen Gross --- SUPPORT.md | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/SUPPORT.md b/SUPPORT.md index 7c8493c02a..19fc8d7533 100644 --- a/SUPPORT.md +++ b/SUPPORT.md @@ -617,6 +617,10 @@ Virtual Performance Management Unit for HVM guests Disabled by default (enable with hypervisor command line option). This feature is not security supported: see http://xenbits.xen.org/xsa/advisory-163.html +### Argo: Inter-domain message delivery by hypercall + + Status: Experimental + ### x86/PCI Device Passthrough Status, x86 PV: Supported, with caveats -- generated by git-patchbot for /home/xen/git/xen.git#master --===============8886210209256360520== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============8886210209256360520==-- From xen-changelog-bounces@lists.xenproject.org Mon Feb 18 10:47:29 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 18 Feb 2019 10:47:29 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgSP-00054r-EX; Mon, 18 Feb 2019 10:47:29 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgSO-00054g-67 for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:47:28 +0000 X-Inumbo-ID: 9493abb5-336a-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 9493abb5-336a-11e9-bc90-bc764e045a96; Mon, 18 Feb 2019 10:47:26 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgSM-00037a-8B for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:47:26 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gvgSM-0003Za-5i for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:47:26 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 10:47:26 +0000 Subject: [Xen-changelog] [xen master] docs, argo: add design document for Argo X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============3869549726660033928==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============3869549726660033928== Content-Type: text/plain commit 455301716e1ff358cb79367213003fba771dd466 Author: Christopher Clark AuthorDate: Wed Feb 6 09:56:00 2019 +0100 Commit: Jan Beulich CommitDate: Thu Feb 7 14:27:15 2019 +0100 docs, argo: add design document for Argo Document provides a brief introduction to the Argo interdomain communication mechanism and a detailed description of the granular locking used within the Argo implementation. Signed-off-by: Christopher Clark Reviewed-by: Roger Pau Monné Release-acked-by: Juergen Gross --- docs/designs/argo.pandoc | 448 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 448 insertions(+) diff --git a/docs/designs/argo.pandoc b/docs/designs/argo.pandoc new file mode 100644 index 0000000000..2ce253b654 --- /dev/null +++ b/docs/designs/argo.pandoc @@ -0,0 +1,448 @@ +# Argo + +## Introduction + +Argo is an interdomain communication mechanism. It provides Xen hypervisor +primitives to transmit data between VMs, by performing data copies into +receive memory rings registered by domains. It does not require memory +sharing between VMs and does not use the grant tables or Xenstore. + +Argo has requirements for performance isolation between domains, to prevent +negative performance impact from malicious or disruptive activity of other +domains, or even other VCPUs of the same domain operating other rings. + +## Hypervisor-Mediated data eXchange (HMX) + +This term references inter-VM communication protocols that have this +key architectural point: The hypervisor is responsible for performing the +write of data into the guest-accessible memory buffer, in the manner +according to the agreed transfer protocol. This structure ensures that +there is strength to the transport mechanism, because the transmitting side +of the communication is the hypervisor, which can be trusted by the receiver, +and the buffer is isolated from access by any other potential sources +outside the receiver. + +The receiver can trust that the hypervisor will: + +- Provide a protocol implementation adhering to hardware synchronization +requirements for concurrent access to system memory by communicating +components +- Deliver data only from an approved source, enforcing policy for Mandatory +Access Control. +- Indicate the correct sender of the data. +- Transmit only the intended data, adhering to the access protocol of the data +structure in the buffer. If the memory region is being used as a ring, then: + - Data writes will only occur within the ring region that is indicated as + available for incoming data by the ring indexes. + - The indicated length of data written will exactly match the length of + data actually written. + - The write for each piece of data will occur only once. + - Data will be written sequentially in the order that it is sent. +- Issue notification of data delivered correctly. + +This structure allows for augmentation by the hypervisor to identify the +sending entity within the source VM, and then provide the receiver with +assured context information about the data source. This enables the receiver +to make decisions based on fine-grained knowledge of the source of the data. + +This structure is also of strong interest for nested virtualization: +transport via the hypervisor can enable construction of efficient +communications between VMs at different levels of nesting. + +# Locking + +Since Argo operates a data path between domains, sections of this code are +*hot* when the communication paths are in use. To encourage high performance, a +goal is to limit mutual exclusion to only where required and enable significant +concurrency. + +Avoidance of deadlock is essential and since state must frequently be updated +that pertains to more than one domain, a locking protocol defines which locks +are needed and the order of their acquistion. + +## Structure + +The granular locking structure of Argo enables: + +1. Performance isolation of guests +2. Avoidance of DoS of rings by domains that are not authorized to send to them +3. Deadlock-free teardown of state across multiple domains on domain destroy +4. Performance of guests using Argo with concurrent operation of rings. + +Argo uses three per-domain locks to protect three separate data structures. +Access to the ring_hash data structure is confined to domains that a +ring-registering domain has authorized to send data via the ring. The complete +set of Argo locks is: + +* Global : `L1_global_argo_rwlock` +* Per-domain: `rings_L2_rwlock` +* Per-domain: `send_L2_lock` +* Per-domain: `wildcard_L2_lock` +* Per-ring: `L3_lock` + +## Protected State + +The data structures being protected by the locks are all per-domain. The only +global Argo state is the `L1_global_argo_rwlock` used to coordinate access to +data structures of other domains. + +### State: Rings registered and owned by a domain + +This includes the state to run that ring, such as memory frame numbers and +established mappings. Per-ring state is protected by its own lock, so that +multiple VCPUs of the same domain operating different rings do not inhibit the +performance of each other. + +The per-domain ring state also includes the list of pending notifications for +other domains that are waiting for ring space availability. + +### State: Partner rings for which this domain is the single allowed sender + +This state belonging to the permitted sender is written to when a ring is +registered by another domain. The lock that protects this state is subject to +locking at arbitrary frequency by those foreign domains when registering rings +-- which do not need any permission granted by this domain in order to register +a ring to communicate with it -- so it must not inhibit the domain's own +ability to use its own rings, to protect them from DoS. For this reason, this +state is protected by its own lock. + +### State: Pending notifications for wildcard rings registered by other domains + +This data structure is needed when a domain is destroyed, to cancel the +outstanding space availability notifications about the wildcard rings of other +domains that this domain has queried. + +Data is entered into this data structure by the domain that owns it, either by +a space-inhibited sendv or a notify operation. + +Data is removed from this data structure in one of three cases: when space +becomes available in the destination ring and the notification is sent, when +the ring is torn down, or when the awaiting domain is destroyed. + +In the case where a notification is sent, access to the data structure is +triggered by the ring owner domain, rather than the domain waiting for +notification. This data structure is protected by its own lock since doing so +entails less contention than the alternative of reusing an existing lock owned +by the domain. + +## Hierarchical Locking Model and Protocol + +The locking discipline within the Argo code is heirarchical and utilizes +reader/writer locks to enable increased concurrency when operations do not +conflict. None of the Argo locks are reentrant. + +The hierarchy: + +* There is a global rwlock (`L1`) to protect access to all of the per-domain +argo data structures. +* There is a rwlock per-domain (`rings_L2`) to protect the hashtable of the +per-ring data structures. +* There is a lock per ring (`L3`) to protect the per-ring data structure, +`struct argo_ring_info`. + +There are a two other per-domain L2 locks; their operation is similar and they +are described later. + +The protocol to safely acquire write access to the per-ring data structure, +`struct argo_ring_info`, is: + +1) Acquire a Read lock on L1. +2) Acquire a Read lock on L2. +3) Acquire L3. + +An alternative valid sequence is: + +1) Acquire a Read lock on L1. +2) Acquire a Write lock on L2. + +This second sequence grants write access to _all_ of the `argo_ring_info` +structs belonging to the domain, but at the expense of less concurrency: no +other operation can access those structs while the locks are held, which will +inhibit operations on those rings until the locks are released. + +Another alternative valid sequence is: + +1) Acquire a Write lock on L1. + +This grants write access to _all_ of the `argo_ring_info` structs belonging to +_all domains_, but again at the expense of far less concurrency: no other +operation can operate on Argo rings until the locks are released. + +## Lock Definitions + +The full set of locks that are directly operated upon by the Argo code are +described in the following section. + +### The global singleton lock: + +* `L1_global_argo_rwlock` + +The rationale for having a global lock is to be able to enforce system-wide +exclusion for a critical region and simplify the logic required to avoid +deadlock, for teardown of state across multiple domains when a domain is +destroyed. + +The majority of operations take a read-lock on this lock, allowing concurrent +Argo operations by many domains. + +The pointer d->argo on every domain is protected by this lock. A set of more +granular per-domain locks could be used to do that, but since domain start and +stop is expected to be a far less frequent operation than the other argo +operations, acquiring a single read lock to enable access to all the argo +structs of all domains simplifies the protocol. + +Points of write-locking on this lock: + +* `argo_destroy`, where: + * All of the domain's own rings are destroyed. + * All of the notifications pending for other domains are cancelled. + * All of the unicast partner rings owned by other domains for this domain to +send to, are destroyed. + * All of the notifications pending on those rings are cancelled. + * All of the notifications pending for this domain on wildcard rings owned +by other domains are cancelled. +* `argo_soft_reset`, for similar teardown operations as argo_destroy. +* `argo_init`, where the `d->argo` pointer is first populated. + * Since the write lock is taken here, there is serialization all concurrent +Argo operations around this single pointer write; this is the cost of using the +simpler one global lock approach. + +Enforcing that the write_lock is acquired on `L1_global_argo_rwlock` before +executing teardown, ensures that no teardown operations act concurrently and no +other Argo operations happen concurrently with a teardown. The teardown logic +is free to safely modify the Argo state across all domains without having to +acquire per-domain locks and deadlock cannot occur. + +### Per-Domain: Ring hash lock + +`rings_L2_rwlock` + +Protects: the per-domain ring hash table of `argo_ring_info` structs. + +Holding a read lock on `rings_L2` protects the ring hash table and the elements +in the hash table `d->argo->ring_hash`, and the `node` and `id` fields in +struct `argo_ring_info` in the hash table. + +Holding a write lock on `rings_L2` protects all of the elements of all the +struct `argo_ring_info` belonging to this domain. + +To take `rings_L2` you must already have `R(L1)`. `W(L1)` implies `W(rings_L2)` +and `L3`. + +Prerequisites: + +* `R(L1_global_argo_rwlock)` must be acquired before taking either read or +write on `rings_L2_rwlock`. +* `W(L1_global_argo_rwlock)` implies `W(rings_L2_rwlock)`, so if +`W(L1_global_argo_rwlock)` is held, then `rings_L2_rwlock` does not need to be +acquired, and all the data structures that `rings_L2_rwlock` protects can be +accessed as if `W(ring_L2_rwlock)` was held. + +Is accessed by the hypervisor on behalf of: + +* The domain that registered the ring. +* Any domain that is allowed to send to the ring -- so that's the partner +domain, for unicast rings, or any domain, for wildcard rings. + +### Send hash lock + +`send_L2_lock` + +Protects: the per-domain send hash table of `argo_send_info` structs. + +Is accessed by the hypervisor on behalf of: + +* Any domain that registers a ring that specifies the domain as the unicast +sender. +* The domain that has been allowed to send, as part of teardown when the domain +is being destroyed. + + +### Wildcard pending list lock + +`wildcard_L2_lock` + +Protects: the per-domain list of pending notifications to the domain from +wildcard rings owned by other domains. + +Is accessed by the hypervisor on behalf of: + +* The domain that issued a query to another about space availability in one of +its wildcard rings - this can be done by attempting a send operation when there +is insufficient ring space available at the time. +* Any domain that the domain has issued a query to about space availability in +one of their wildcard rings. + +### Per-Ring locks: + +* `L3_lock` + +This lock protects the members of a `struct ring_info` which is the primary +state for a domain's own registered ring. + + +## Reasoning Model + +A common model for reasoning about concurrent code focusses on accesses to +individual variables: if code touches this variable, see that it first acquires +the corresponding lock and then drops it afterwards. A challenge with this +model is in ensuring that the sequence of locks acquired within nested +functions, when operating on data from multiple domains with concurrent +operations, is safe from deadlock. + +An alternative method that is better suited to the Argo software is to consider +the execution path, the full sequence of locks acquired, accesses performed, +and locks released, from entering an operation, to the completion of the work. + +An example code path for an operation: + +`[entry] > -- [ take R(L1) ] -- [ take R(L2) ] -- loop [ take a L3 / drop L3 ] +-- [ drop R(L2) ] -- [ drop R(L1)] -- > [exit]` + +If a function implements a section of the path, it is important to know not +only what variables the function itself operates upon, but also the locking +state that will already have been established at the point when the function is +invoked, since this will affect what data the function can access. For this +reason, comments in the code, or ASSERTs that explicitly check lock state, +communicate what the locking state is expected and intended to be when that +code is invoked. See the macros defined to support this for Argo later in this +document. + + +## Macros to Validate and Document Lock State + +These macros encode the logic to verify that the locking has adhered to the +locking discipline. + +eg. On entry to logic that requires holding at least `R(rings_L2)`, this: + +`ASSERT(LOCKING_Read_rings_L2(d));` + +checks that the lock state is sufficient, validating that one of the following +must be true when executed: + +`R(rings_L2) && R(L1)` +or: `W(rings_L2) && R(L1)` +or: `W(L1)` + +The macros are defined thus: + +``` +#define LOCKING_Write_L1 (rw_is_write_locked(&L1_global_argo_rwlock)) +/* + * While LOCKING_Read_L1 will return true even if the lock is write-locked, + * that's OK because everywhere that a Read lock is needed with these macros, + * holding a Write lock there instead is OK too: we're checking that _at least_ + * the specified level of locks are held. + */ +#define LOCKING_Read_L1 (rw_is_locked(&L1_global_argo_rwlock)) + +#define LOCKING_Write_rings_L2(d) \ + ((LOCKING_Read_L1 && rw_is_write_locked(&(d)->argo->rings_L2_rwlock)) || \ + LOCKING_Write_L1) +/* + * Skip checking LOCKING_Write_rings_L2(d) within this LOCKING_Read_rings_L2 + * definition because the first clause that is testing R(L1) && R(L2) will also + * return true if R(L1) && W(L2) is true, because of the way that rw_is_locked + * behaves. This results in a slightly shorter and faster implementation. + */ +#define LOCKING_Read_rings_L2(d) \ + ((LOCKING_Read_L1 && rw_is_locked(&(d)->argo->rings_L2_rwlock)) || \ + LOCKING_Write_L1) +/* + * Skip checking LOCKING_Write_L1 within this LOCKING_L3 definition because + * LOCKING_Write_rings_L2(d) will return true for that condition. + */ +#define LOCKING_L3(d, r) \ + ((LOCKING_Read_L1 && rw_is_locked(&(d)->argo->rings_L2_rwlock) \ + && spin_is_locked(&(r)->L3_lock)) || LOCKING_Write_rings_L2(d)) + +#define LOCKING_send_L2(d) \ + ((LOCKING_Read_L1 && spin_is_locked(&(d)->argo->send_L2_lock)) || \ + LOCKING_Write_L1) +``` + +Here is an example of a macro in use: + +``` +static void +notify_ring(const struct domain *d, struct argo_ring_info *ring_info, + struct hlist_head *to_notify) +{ + uint32_t space; + + ASSERT(LOCKING_Read_rings_L2(d)); + + spin_lock(&ring_info->L3_lock); + + if ( ring_info->len ) + space = ringbuf_payload_space(d, ring_info); + else + space = 0; + + spin_unlock(&ring_info->L3_lock); + + if ( space ) + pending_find(d, ring_info, space, to_notify); +} + +``` + +In the above example, it can be seen that it is safe to acquire the `L3` lock +because _at least_ `R(rings_L2)` is already held, as documented and verified by +the macro. + +## FAQ / Other Considerations + +### Why not have a single per-domain lock? + +Due to performance isolation / DoS avoidance: if there is a single per-domain +lock, acquiring this lock will stall operations on other active rings owned by +the domain. A malicious domain can loop registering and unregistering rings, +without any consent by the targetted domain, which would experience decreased +throughput due to the contention on the single per-domain lock. The granular +locking structure of Argo prevents this. It also allows concurrent operation of +different rings by multiple VCPUs of the same domain without contention, to +avoid negative application performance interaction. + +## Rationale for Using a Singleton Global Lock: L1 + +### Teardown on domain destroy + +The single global lock enables exclusive access to the argo data structures +across domains when a domain is destroyed. Every unicast ring that the dying +domain is the authorized sender is torn down and any pending space-available +notifications in other domain's wildcard rings are cancelled. This requires +gaining safe access to the data structures on each of the domains involved. + +The 'send hashtable' data structure is needed in order to perform the teardown +of rings when a domain is destroyed. To populate it, whenever a unicast ring is +registered, the lock that protects that data structure must be taken +exclusively. + +There are granular per-domain locks which protect the per-domain data +structures. The global singleton L1 lock operates with-and-above the per-domain +locks and is used to obtain exclusive access to multiple domain's argo data +structures in the infrequent case where it is used -- for domain destroy -- +whilst otherwise allowing concurrent access, via acquiring it with 'read' +access, for the majority of the time. + +To perform the required state teardown on domain destruction, which can require +removing state from the data structures of multiple domains, a locking protocol +to obtain mutual exclusion and safe access to the state is required, without +deadlocking. + +Using the single global lock avoids the need for sequencing the acquisition of +multiple individual per-domain locks (and lower level data structure locks) to +prevent deadlock: taking W(L1) grants access to all and taking R(L1) ensures +that teardown of any domain will not interfere with any Argo hypercall +operation. It enables introducing granular locking without complex or +error-prone lock acquisition logic. + +# Future Work + +- Performance measurement and optimization +- Provide assurance of connection source context to destination +- Policy controls for reducing the duration of hypervisor mappings of +transmission rings, to improve resistance to data read attacks on +hypervisor memory -- generated by git-patchbot for /home/xen/git/xen.git#master --===============3869549726660033928== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============3869549726660033928==-- From xen-changelog-bounces@lists.xenproject.org Mon Feb 18 10:47:39 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 18 Feb 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Y29tbWl0IDdiNTI3OGIyOGY4ZmJjZDQ0MDJlNDUyMGQ3YTVkNjA3ZDRhOTk3YTcKQXV0aG9yOiAg ICAgSWFuIEphY2tzb24gPGlhbi5qYWNrc29uQGV1LmNpdHJpeC5jb20+CkF1dGhvckRhdGU6IFRo dSBGZWIgNyAxNTowMjoyNyAyMDE5ICswMDAwCkNvbW1pdDogICAgIFdlaSBMaXUgPHdlaS5saXUy QGNpdHJpeC5jb20+CkNvbW1pdERhdGU6IFRodSBGZWIgNyAxODo0NDozNiAyMDE5ICswMDAwCgog ICAgdG9vbHM6IGluaXQgc2NyaXB0czogbWFrZSBYRU5fUlVOX0RJUiBhbmQgWEVOX0xPQ0tfRElS IG1vZGUgNzAwCiAgICAKICAgIFRoZXNlIGRpcmVjdG9yaWVzIG91Z2h0IG5vdCB0byBiZSBldmVu IHdvcmxkLXJlYWRhYmxlLiAgSWYgdGhpcyBzY3JpcHQKICAgIGZvciBzb21lIHJlYXNvbiBydW5z IHdpdGggYSBsYXggdW1hc2sgdGhleSBtaWdodCBiZSBjcmVhdGVkCiAgICBvdmVybHktd3JpdGVh YmxlLiAgQXZvaWQgYW55IHN1Y2ggYnVnIGJ5IHNldHRpbmcgdGhlIG1vZGUgZXhwbGljaXRseS4K ICAgIAogICAgU2lnbmVkLW9mZi1ieTogSWFuIEphY2tzb24gPGlhbi5qYWNrc29uQGV1LmNpdHJp eC5jb20+CiAgICBBY2tlZC1ieTogV2VpIExpdSA8d2VpLmxpdTJAY2l0cml4LmNvbT4KICAgIFJl bGVhc2UtYWNrZWQtYnk6IEp1ZXJnZW4gR3Jvc3MgPGpncm9zc0BzdXNlLmNvbT4KLS0tCiB0b29s cy9ob3RwbHVnL0xpbnV4L2luaXQuZC94ZW5jb21tb25zLmluIHwgNCArKy0tCiAxIGZpbGUgY2hh 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Oi8vbGlzdHMueGVucHJvamVjdC5vcmcveGVuLWNoYW5nZWxvZw== From xen-changelog-bounces@lists.xenproject.org Mon Feb 18 10:48:20 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 18 Feb 2019 10:48:20 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgTE-0005BU-Pr; Mon, 18 Feb 2019 10:48:20 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgTD-0005BK-Ng for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:48:19 +0000 X-Inumbo-ID: b2e90d96-336a-11e9-a26f-0301890fe5cb Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id b2e90d96-336a-11e9-a26f-0301890fe5cb; Mon, 18 Feb 2019 10:48:17 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgTB-00039Q-5H for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:48:17 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gvgTB-0003d5-2w for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:48:17 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 10:48:17 +0000 Subject: [Xen-changelog] [xen master] docs: Update credit/credit2 feature docs reflecting new default scheduler X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" 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xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgTL-00039Y-Be for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:48:27 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gvgTL-0003da-8v for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:48:27 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 10:48:27 +0000 Subject: [Xen-changelog] [xen master] docs: features/qemu-depriv formatting fixes X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" 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archives@lists.xen.org Delivery-date: Mon, 18 Feb 2019 10:48:39 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgTX-0005E3-TN; Mon, 18 Feb 2019 10:48:39 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgTX-0005Dr-A1 for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:48:39 +0000 X-Inumbo-ID: bf148cbc-336a-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id bf148cbc-336a-11e9-bc90-bc764e045a96; Mon, 18 Feb 2019 10:48:37 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgTV-00039k-HS for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:48:37 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gvgTV-0003eC-F8 for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:48:37 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 10:48:37 +0000 Subject: [Xen-changelog] [xen master] x86/shadow: adjust minimum allocation calculations X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============6233469139643964378==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============6233469139643964378== Content-Type: text/plain commit d04bf1eb656be8b2131d08c7e32cff343556cfa8 Author: Jan Beulich AuthorDate: Mon Feb 11 09:09:13 2019 +0100 Commit: Jan Beulich CommitDate: Mon Feb 11 09:09:13 2019 +0100 x86/shadow: adjust minimum allocation calculations A previously bad situation has become worse with the early setting of ->max_vcpus: The value returned by shadow_min_acceptable_pages() has further grown, and hence now holds back even more memory from use for the p2m. Make sh_min_allocation() account for all p2m memory needed for shadow_enable() to succeed during domain creation (at which point the domain has no memory at all allocated to it yet, and hence use of d->tot_pages is meaningless). Also make shadow_min_acceptable_pages() no longer needlessly add 1 to the vCPU count. Finally make the debugging printk() in shadow_alloc_p2m_page() a little more useful by logging some of the relevant domain settings. Reported-by: Roger Pau Monné Signed-off-by: Jan Beulich Reviewed-by: Roger Pau Monné Acked-by: George Dunlap Acked-by: Tim Deegan Release-acked-by: Juergen Gross --- xen/arch/x86/mm/shadow/common.c | 24 ++++++++++++++++-------- 1 file changed, 16 insertions(+), 8 deletions(-) diff --git a/xen/arch/x86/mm/shadow/common.c b/xen/arch/x86/mm/shadow/common.c index c49aeb5e60..07840ff727 100644 --- a/xen/arch/x86/mm/shadow/common.c +++ b/xen/arch/x86/mm/shadow/common.c @@ -966,7 +966,8 @@ const u8 sh_type_to_size[] = { 1 /* SH_type_oos_snapshot */ }; -/* Figure out the least acceptable quantity of shadow memory. +/* + * Figure out the least acceptable quantity of shadow memory. * The minimum memory requirement for always being able to free up a * chunk of memory is very small -- only three max-order chunks per * vcpu to hold the top level shadows and pages with Xen mappings in them. @@ -975,11 +976,11 @@ const u8 sh_type_to_size[] = { * instruction, we must be able to map a large number (about thirty) VAs * at the same time, which means that to guarantee progress, we must * allow for more than ninety allocated pages per vcpu. We round that - * up to 128 pages, or half a megabyte per vcpu, and add 1 more vcpu's - * worth to make sure we never return zero. */ + * up to 128 pages, or half a megabyte per vcpu. + */ static unsigned int shadow_min_acceptable_pages(const struct domain *d) { - return (d->max_vcpus + 1) * 128; + return d->max_vcpus * 128; } /* Dispatcher function: call the per-mode function that will unhook the @@ -1322,8 +1323,11 @@ shadow_alloc_p2m_page(struct domain *d) if ( !d->arch.paging.p2m_alloc_failed ) { d->arch.paging.p2m_alloc_failed = 1; - dprintk(XENLOG_ERR, "d%i failed to allocate from shadow pool\n", - d->domain_id); + dprintk(XENLOG_ERR, + "d%d failed to allocate from shadow pool (tot=%u p2m=%u min=%u)\n", + d->domain_id, d->arch.paging.shadow.total_pages, + d->arch.paging.shadow.p2m_pages, + shadow_min_acceptable_pages(d)); } paging_unlock(d); return NULL; @@ -1373,9 +1377,13 @@ static unsigned int sh_min_allocation(const struct domain *d) { /* * Don't allocate less than the minimum acceptable, plus one page per - * megabyte of RAM (for the p2m table). + * megabyte of RAM (for the p2m table, minimally enough for HVM's setting + * up of slot zero and an LAPIC page), plus one for HVM's 1-to-1 pagetable. */ - return shadow_min_acceptable_pages(d) + (d->tot_pages / 256); + return shadow_min_acceptable_pages(d) + + max(d->tot_pages / 256, + is_hvm_domain(d) ? CONFIG_PAGING_LEVELS + 2 : 0U) + + is_hvm_domain(d); } int shadow_set_allocation(struct domain *d, unsigned int pages, bool *preempted) -- generated by git-patchbot for /home/xen/git/xen.git#master --===============6233469139643964378== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============6233469139643964378==-- From xen-changelog-bounces@lists.xenproject.org Mon Feb 18 10:48:52 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 18 Feb 2019 10:48:52 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgTj-0005FG-VN; Mon, 18 Feb 2019 10:48:51 +0000 Received: from all-amaz-eas1.inumbo.com 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Mon, 18 Feb 2019 10:48:58 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgTp-0003A4-Sw for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:48:57 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gvgTp-0003fL-QZ for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:48:57 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 10:48:57 +0000 Subject: [Xen-changelog] [xen master] iommu: fix iommu_ops initialization X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: 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lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgU1-0005ID-8p for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:49:09 +0000 X-Inumbo-ID: d1435f78-336a-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id d1435f78-336a-11e9-bc90-bc764e045a96; Mon, 18 Feb 2019 10:49:08 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgU0-0003Ar-2p for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:49:08 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gvgU0-0003g8-0F for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:49:08 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 10:49:08 +0000 Subject: [Xen-changelog] [xen master] VMX: don't ignore P2M setup error X-BeenThere: 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From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 10:49:18 +0000 Subject: [Xen-changelog] [xen master] x86/hvm: block speculative out-of-bound accesses X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGYxNzhhMDBjMzAxNzNjMGIyNjhkOTkxNjBlMTlhZDI5OWIxODIzYTIKQXV0aG9yOiAg ICAgTm9yYmVydCBNYW50aGV5IDxubWFudGhleUBhbWF6b24uZGU+CkF1dGhvckRhdGU6IFR1ZSBG ZWIgMTIgMTU6MjA6MTUgMjAxOSArMDEwMApDb21taXQ6ICAgICBKYW4gQmV1bGljaCA8amJldWxp Y2hAc3VzZS5jb20+CkNvbW1pdERhdGU6IFR1ZSBGZWIgMTIgMTU6MjA6MTUgMjAxOSArMDEwMAoK ICAgIHg4Ni9odm06IGJsb2NrIHNwZWN1bGF0aXZlIG91dC1vZi1ib3VuZCBhY2Nlc3NlcwogICAg 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Mon, 18 Feb 2019 10:49:32 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgUO-0005Kv-8X; Mon, 18 Feb 2019 10:49:32 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgUM-0005Kk-Uk for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:49:30 +0000 X-Inumbo-ID: dd69652a-336a-11e9-9b7a-ab50722b4870 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id dd69652a-336a-11e9-9b7a-ab50722b4870; Mon, 18 Feb 2019 10:49:28 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gvgUK-0003B7-Es for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 10:49:28 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 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X2NhY2hlYXR0cjsKIH0gVkVSU18xLjE7CisKK1ZFUlNfMS4zIHsKKwlnbG9iYWw6CisJCXhlbmRl dmljZW1vZGVsX21vZGlmaWVkX21lbW9yeV9idWxrOworfSBWRVJTXzEuMjsKLS0KZ2VuZXJhdGVk IGJ5IGdpdC1wYXRjaGJvdCBmb3IgL2hvbWUveGVuL2dpdC94ZW4uZ2l0I21hc3RlcgoKX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5nZWxvZyBt YWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRwczovL2xp c3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= From xen-changelog-bounces@lists.xenproject.org Mon Feb 18 12:55:10 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 18 Feb 2019 12:55:10 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gviRx-0002Fp-6j; Mon, 18 Feb 2019 12:55:09 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gviRw-0002Fe-1t for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 12:55:08 +0000 X-Inumbo-ID: 697c77ee-337c-11e9-8247-e78eb97b17d0 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 697c77ee-337c-11e9-8247-e78eb97b17d0; Mon, 18 Feb 2019 12:55:05 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gviRs-0005gl-Rv for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 12:55:04 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gviRs-0001pc-PG for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 12:55:04 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 12:55:04 +0000 Subject: [Xen-changelog] [xen staging] dom0/pvh: align allocation and mapping order to start address X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============4569003862778023519==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============4569003862778023519== Content-Type: text/plain commit dc0b0b1f2d5792ecd9e26f2e65b36682f8ec2b27 Author: Roger Pau Monné AuthorDate: Mon Feb 18 13:42:51 2019 +0100 Commit: Jan Beulich CommitDate: Mon Feb 18 13:42:51 2019 +0100 dom0/pvh: align allocation and mapping order to start address The p2m and iommu mapping code always had the requirement that addresses and orders must be aligned when populating the p2m or the iommu page tables. PVH dom0 builder didn't take this requirement into account, and can call into the p2m/iommu mapping helpers with addresses and orders that are not aligned. Fix this by making sure the orders passed to the physmap population helpers are always aligned to the guest address to be populated. Signed-off-by: Roger Pau Monné Reviewed-by: Wei Liu Reviewed-by: Jan Beulich Release-acked-by: Juergen Gross --- xen/arch/x86/hvm/dom0_build.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/xen/arch/x86/hvm/dom0_build.c b/xen/arch/x86/hvm/dom0_build.c index 51cf490811..a571d15c13 100644 --- a/xen/arch/x86/hvm/dom0_build.c +++ b/xen/arch/x86/hvm/dom0_build.c @@ -152,6 +152,8 @@ static int __init pvh_populate_memory_range(struct domain *d, order = get_order_from_pages(end - start + 1); order = min(order ? order - 1 : 0, max_order); + /* The order allocated and populated must be aligned to the address. */ + order = min(order, start ? find_first_set_bit(start) : MAX_ORDER); page = alloc_domheap_pages(d, order, dom0_memflags | MEMF_no_scrub); if ( page == NULL ) { -- generated by git-patchbot for /home/xen/git/xen.git#staging --===============4569003862778023519== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============4569003862778023519==-- From xen-changelog-bounces@lists.xenproject.org Mon Feb 18 12:55:17 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 18 Feb 2019 12:55:17 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gviS5-0002Hn-8f; Mon, 18 Feb 2019 12:55:17 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gviS4-0002HZ-E3 for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 12:55:16 +0000 X-Inumbo-ID: 6f8c6f45-337c-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 6f8c6f45-337c-11e9-bc90-bc764e045a96; Mon, 18 Feb 2019 12:55:15 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gviS3-0005hQ-1m for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 12:55:15 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gviS2-0001q9-VS for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 12:55:14 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 12:55:14 +0000 Subject: [Xen-changelog] [xen staging] x86/pvh: reorder PVH dom0 iommu initialization X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0664473821921678864==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============0664473821921678864== Content-Type: text/plain commit 036c6cbddca28be5a526da045bb379fedfad8255 Author: Roger Pau Monné AuthorDate: Mon Feb 18 13:43:50 2019 +0100 Commit: Jan Beulich CommitDate: Mon Feb 18 13:43:50 2019 +0100 x86/pvh: reorder PVH dom0 iommu initialization So that the iommu is initialized before populating the p2m, and entries added get the corresponding iommu page table entries if required. This requires splitting the current pvh_setup_p2m into two different functions. One that crafts dom0 physmap and sets the paging allocation, and another one that actually populates the p2m with RAM regions. Note that this allows to remove the special casing done for the low 1MB in hwdom_iommu_map. Signed-off-by: Roger Pau Monné Reviewed-by: Jan Beulich Release-acked-by: Juergen Gross --- xen/arch/x86/hvm/dom0_build.c | 35 +++++++++++++++++++++++------------ xen/drivers/passthrough/x86/iommu.c | 7 +------ 2 files changed, 24 insertions(+), 18 deletions(-) diff --git a/xen/arch/x86/hvm/dom0_build.c b/xen/arch/x86/hvm/dom0_build.c index a571d15c13..aa599f09ef 100644 --- a/xen/arch/x86/hvm/dom0_build.c +++ b/xen/arch/x86/hvm/dom0_build.c @@ -409,14 +409,10 @@ static __init void pvh_setup_e820(struct domain *d, unsigned long nr_pages) ASSERT(cur_pages == nr_pages); } -static int __init pvh_setup_p2m(struct domain *d) +static void __init pvh_init_p2m(struct domain *d) { - struct vcpu *v = d->vcpu[0]; unsigned long nr_pages = dom0_compute_nr_pages(d, NULL, 0); - unsigned int i; - int rc; bool preempted; -#define MB1_PAGES PFN_DOWN(MB(1)) pvh_setup_e820(d, nr_pages); do { @@ -425,6 +421,14 @@ static int __init pvh_setup_p2m(struct domain *d) &preempted); process_pending_softirqs(); } while ( preempted ); +} + +static int __init pvh_populate_p2m(struct domain *d) +{ + struct vcpu *v = d->vcpu[0]; + unsigned int i; + int rc; +#define MB1_PAGES PFN_DOWN(MB(1)) /* * Memory below 1MB is identity mapped initially. RAM regions are @@ -1134,13 +1138,6 @@ int __init dom0_construct_pvh(struct domain *d, const module_t *image, printk(XENLOG_INFO "*** Building a PVH Dom%d ***\n", d->domain_id); - rc = pvh_setup_p2m(d); - if ( rc ) - { - printk("Failed to setup Dom0 physical memory map\n"); - return rc; - } - /* * NB: MMCFG initialization needs to be performed before iommu * initialization so the iommu code can fetch the MMCFG regions used by the @@ -1148,8 +1145,22 @@ int __init dom0_construct_pvh(struct domain *d, const module_t *image, */ pvh_setup_mmcfg(d); + /* + * Craft dom0 physical memory map and set the paging allocation. This must + * be done before the iommu initializion, since iommu initialization code + * will likely add mappings required by devices to the p2m (ie: RMRRs). + */ + pvh_init_p2m(d); + iommu_hwdom_init(d); + rc = pvh_populate_p2m(d); + if ( rc ) + { + printk("Failed to setup Dom0 physical memory map\n"); + return rc; + } + rc = pvh_load_kernel(d, image, image_headroom, initrd, bootstrap_map(image), cmdline, &entry, &start_info); if ( rc ) diff --git a/xen/drivers/passthrough/x86/iommu.c b/xen/drivers/passthrough/x86/iommu.c index a88ef9b189..42b1a1bbc3 100644 --- a/xen/drivers/passthrough/x86/iommu.c +++ b/xen/drivers/passthrough/x86/iommu.c @@ -151,12 +151,7 @@ static bool __hwdom_init hwdom_iommu_map(const struct domain *d, * inclusive mapping additionally maps in every pfn up to 4GB except those * that fall in unusable ranges for PV Dom0. */ - if ( (pfn > max_pfn && !mfn_valid(mfn)) || xen_in_range(pfn) || - /* - * Ignore any address below 1MB, that's already identity mapped by the - * Dom0 builder for HVM. - */ - (!d->domain_id && is_hvm_domain(d) && pfn < PFN_DOWN(MB(1))) ) + if ( (pfn > max_pfn && !mfn_valid(mfn)) || xen_in_range(pfn) ) return false; switch ( type = page_get_ram_type(mfn) ) -- generated by git-patchbot for /home/xen/git/xen.git#staging --===============0664473821921678864== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============0664473821921678864==-- From xen-changelog-bounces@lists.xenproject.org Mon Feb 18 12:55:29 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 18 Feb 2019 12:55:29 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gviSH-0002Nf-AS; Mon, 18 Feb 2019 12:55:29 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gviSG-0002NV-LS for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 12:55:28 +0000 X-Inumbo-ID: 7599d15c-337c-11e9-9c8a-e7818f837cbb Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 7599d15c-337c-11e9-9c8a-e7818f837cbb; Mon, 18 Feb 2019 12:55:25 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gviSD-0005hY-7V for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 12:55:25 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gviSD-0001r1-4w for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 12:55:25 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 12:55:25 +0000 Subject: [Xen-changelog] [xen staging] amd/npt/shadow: replace assert that prevents creating 2M/1G MMIO entries X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============2833632519990210683==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============2833632519990210683== Content-Type: text/plain commit 6fa1755644d0e63793007c8d911b4b520ca95301 Author: Roger Pau Monné AuthorDate: Mon Feb 18 13:44:24 2019 +0100 Commit: Jan Beulich CommitDate: Mon Feb 18 13:44:24 2019 +0100 amd/npt/shadow: replace assert that prevents creating 2M/1G MMIO entries The assert was originally added to make sure that higher order regions (> PAGE_ORDER_4K) could not be used to bypass the mmio_ro_ranges check performed by p2m_type_to_flags. This however is already checked in set_mmio_p2m_entry, which makes sure that higher order mappings don't overlap with mmio_ro_ranges, thus allowing the creation of high order MMIO mappings safely. Replace the assert to allow 2M/1G entries to be created for MMIO regions and add some extra asserts as a replacement to make sure there's no overlapping with MMIO read-only ranges. Note that 1G MMIO entries will not be created unless mmio_order is changed to allow it. Signed-off-by: Roger Pau Monné Reviewed-by: Jan Beulich Acked-by: George Dunlap Release-acked-by: Juergen Gross --- xen/arch/x86/mm/p2m-pt.c | 23 +++++++++++++++++++---- 1 file changed, 19 insertions(+), 4 deletions(-) diff --git a/xen/arch/x86/mm/p2m-pt.c b/xen/arch/x86/mm/p2m-pt.c index 12f92cf1f0..52eaa24b18 100644 --- a/xen/arch/x86/mm/p2m-pt.c +++ b/xen/arch/x86/mm/p2m-pt.c @@ -479,6 +479,23 @@ int p2m_pt_handle_deferred_changes(uint64_t gpa) return rc; } +/* Checks only applicable to entries with order > PAGE_ORDER_4K */ +static void check_entry(mfn_t mfn, p2m_type_t new, p2m_type_t old, + unsigned int order) +{ + ASSERT(order > PAGE_ORDER_4K); + ASSERT(old != p2m_ioreq_server); + if ( new == p2m_mmio_direct ) + ASSERT(!mfn_eq(mfn, INVALID_MFN) && + !rangeset_overlaps_range(mmio_ro_ranges, mfn_x(mfn), + mfn_x(mfn) + (1ul << order))); + else if ( p2m_allows_invalid_mfn(new) || new == p2m_invalid || + new == p2m_mmio_dm ) + ASSERT(mfn_valid(mfn) || mfn_eq(mfn, INVALID_MFN)); + else + ASSERT(mfn_valid(mfn)); +} + /* Returns: 0 for success, -errno for failure */ static int p2m_pt_set_entry(struct p2m_domain *p2m, gfn_t gfn_, mfn_t mfn, @@ -575,8 +592,7 @@ p2m_pt_set_entry(struct p2m_domain *p2m, gfn_t gfn_, mfn_t mfn, } } - ASSERT(p2m_flags_to_type(flags) != p2m_ioreq_server); - ASSERT(!mfn_valid(mfn) || p2mt != p2m_mmio_direct); + check_entry(mfn, p2mt, p2m_flags_to_type(flags), page_order); l3e_content = mfn_valid(mfn) || p2m_allows_invalid_mfn(p2mt) ? p2m_l3e_from_pfn(mfn_x(mfn), p2m_type_to_flags(p2m, p2mt, mfn, 2)) @@ -667,8 +683,7 @@ p2m_pt_set_entry(struct p2m_domain *p2m, gfn_t gfn_, mfn_t mfn, } } - ASSERT(p2m_flags_to_type(flags) != p2m_ioreq_server); - ASSERT(!mfn_valid(mfn) || p2mt != p2m_mmio_direct); + check_entry(mfn, p2mt, p2m_flags_to_type(flags), page_order); l2e_content = mfn_valid(mfn) || p2m_allows_invalid_mfn(p2mt) ? p2m_l2e_from_pfn(mfn_x(mfn), p2m_type_to_flags(p2m, p2mt, mfn, 1)) -- generated by git-patchbot for /home/xen/git/xen.git#staging --===============2833632519990210683== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============2833632519990210683==-- From xen-changelog-bounces@lists.xenproject.org Mon Feb 18 12:55:37 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 18 Feb 2019 12:55:37 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gviSP-0002PJ-CE; Mon, 18 Feb 2019 12:55:37 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gviSO-0002P3-CL for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 12:55:36 +0000 X-Inumbo-ID: 7baa0662-337c-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 7baa0662-337c-11e9-bc90-bc764e045a96; Mon, 18 Feb 2019 12:55:35 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gviSN-0005hg-DA for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 12:55:35 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gviSN-0001sz-Aj for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 12:55:35 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 12:55:35 +0000 Subject: [Xen-changelog] [xen staging] pvh/dom0: warn when dom0_mem is not set X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0443669579393681913==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============0443669579393681913== Content-Type: text/plain commit fbaa0e58f39ae23263ad0935d88a7e61e0dd9ef1 Author: Roger Pau Monné AuthorDate: Mon Feb 18 13:44:53 2019 +0100 Commit: Jan Beulich CommitDate: Mon Feb 18 13:44:53 2019 +0100 pvh/dom0: warn when dom0_mem is not set There have been several reports of the dom0 builder running out of memory when building a PVH dom0 without having specified a dom0_mem value. Print a warning message if dom0_mem is not set when booting in PVH mode. This is a temporary workaround until accounting for internal memory required by Xen (ie: paging structures) is improved. Signed-off-by: Roger Pau Monné Acked-by: Jan Beulich Reviewed-by: Wei Liu Release-acked-by: Juergen Gross --- xen/arch/x86/dom0_build.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/xen/arch/x86/dom0_build.c b/xen/arch/x86/dom0_build.c index 2b4d9e9ea6..6ebe36766b 100644 --- a/xen/arch/x86/dom0_build.c +++ b/xen/arch/x86/dom0_build.c @@ -378,8 +378,18 @@ unsigned long __init dom0_compute_nr_pages( * maximum of 128MB. */ if ( !nr_pages ) + { nr_pages = avail - (pv_shim ? pv_shim_mem(avail) : min(avail / 16, 128UL << (20 - PAGE_SHIFT))); + if ( is_hvm_domain(d) && !need_paging ) + /* + * Temporary workaround message until internal (paging) memory + * accounting required to build a pvh dom0 is improved. + */ + printk("WARNING: PVH dom0 without dom0_mem set is still unstable. " + "If you get crashes during boot, try adding a dom0_mem parameter\n"); + } + /* Clamp according to min/max limits and available memory. */ nr_pages = max(nr_pages, min_pages); -- generated by git-patchbot for /home/xen/git/xen.git#staging --===============0443669579393681913== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============0443669579393681913==-- From xen-changelog-bounces@lists.xenproject.org Mon Feb 18 12:55:48 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 18 Feb 2019 12:55:48 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gviSa-0002R4-E0; Mon, 18 Feb 2019 12:55:48 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gviSZ-0002Qu-C6 for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 12:55:47 +0000 X-Inumbo-ID: 81c452ae-337c-11e9-94d3-0789402fff1a Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 81c452ae-337c-11e9-94d3-0789402fff1a; Mon, 18 Feb 2019 12:55:45 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gviSX-0005ho-JC for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 12:55:45 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gviSX-0001tf-Gh for xen-changelog@lists.xenproject.org; Mon, 18 Feb 2019 12:55:45 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 18 Feb 2019 12:55:45 +0000 Subject: [Xen-changelog] [xen staging] altp2m: Prevent deadlocks when a domain performs altp2m operations on itself X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDI5ZDI4YjI5MTkwYmEwOWQ1M2FlN2U0NzUxMDhkZWY4NGUxNmUzNjMKQXV0aG9yOiAg ICAgR2VvcmdlIER1bmxhcCA8Z2VvcmdlLmR1bmxhcEBjaXRyaXguY29tPgpBdXRob3JEYXRlOiBN b24gRmViIDE4IDEzOjQ1OjI0IDIwMTkgKzAxMDAKQ29tbWl0OiAgICAgSmFuIEJldWxpY2ggPGpi ZXVsaWNoQHN1c2UuY29tPgpDb21taXREYXRlOiBNb24gRmViIDE4IDEzOjQ1OjI0IDIwMTkgKzAx MDAKCiAgICBhbHRwMm06IFByZXZlbnQgZGVhZGxvY2tzIHdoZW4gYSBkb21haW4gcGVyZm9ybXMg YWx0cDJtIG9wZXJhdGlvbnMgb24gaXRzZWxmCiAgICAKICAgIGRvbWFpbl9wYXVzZV9leGNlcHRf 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Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gw2sh-0003jT-Qu; Tue, 19 Feb 2019 10:44:07 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gw2sg-0003jN-HS for xen-changelog@lists.xenproject.org; Tue, 19 Feb 2019 10:44:06 +0000 X-Inumbo-ID: 46fc766b-3433-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 46fc766b-3433-11e9-bc90-bc764e045a96; Tue, 19 Feb 2019 10:44:05 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gw2se-0001h6-Sb for xen-changelog@lists.xenproject.org; Tue, 19 Feb 2019 10:44:04 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gw2se-0008NB-PL for xen-changelog@lists.xenproject.org; Tue, 19 Feb 2019 10:44:04 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Tue, 19 Feb 2019 10:44:04 +0000 Subject: [Xen-changelog] [xen staging] vpci: reduce verboseness of BAR write warnings X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============5069457920654901281==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============5069457920654901281== Content-Type: text/plain commit 1bcd0b43a16b7a48ec9afce3887c6c841b687abb Author: Roger Pau Monne AuthorDate: Mon Feb 18 17:24:28 2019 +0100 Commit: Wei Liu CommitDate: Tue Feb 19 10:34:58 2019 +0000 vpci: reduce verboseness of BAR write warnings Avoid printing a warning message when writing to a BAR register with memory decoding enabled if the value written is the same as the current one. No functional change. Signed-off-by: Roger Pau Monné Reviewed-by: Jan Beulich Release-acked-by: Juergen Gross --- xen/drivers/vpci/header.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) diff --git a/xen/drivers/vpci/header.c b/xen/drivers/vpci/header.c index 106e8af8b2..efb6ca90e3 100644 --- a/xen/drivers/vpci/header.c +++ b/xen/drivers/vpci/header.c @@ -362,16 +362,6 @@ static void bar_write(const struct pci_dev *pdev, unsigned int reg, uint8_t slot = PCI_SLOT(pdev->devfn), func = PCI_FUNC(pdev->devfn); bool hi = false; - if ( pci_conf_read16(pdev->seg, pdev->bus, slot, func, PCI_COMMAND) & - PCI_COMMAND_MEMORY ) - { - gprintk(XENLOG_WARNING, - "%04x:%02x:%02x.%u: ignored BAR %lu write with memory decoding enabled\n", - pdev->seg, pdev->bus, slot, func, - bar - pdev->vpci->header.bars); - return; - } - if ( bar->type == VPCI_BAR_MEM64_HI ) { ASSERT(reg > PCI_BASE_ADDRESS_0); @@ -381,6 +371,19 @@ static void bar_write(const struct pci_dev *pdev, unsigned int reg, else val &= PCI_BASE_ADDRESS_MEM_MASK; + if ( pci_conf_read16(pdev->seg, pdev->bus, slot, func, PCI_COMMAND) & + PCI_COMMAND_MEMORY ) + { + /* If the value written is the current one avoid printing a warning. */ + if ( val != (uint32_t)(bar->addr >> (hi ? 32 : 0)) ) + gprintk(XENLOG_WARNING, + "%04x:%02x:%02x.%u: ignored BAR %lu write with memory decoding enabled\n", + pdev->seg, pdev->bus, slot, func, + bar - pdev->vpci->header.bars + hi); + return; + } + + /* * Update the cached address, so that when memory decoding is enabled * Xen can map the BAR into the guest p2m. -- generated by git-patchbot for /home/xen/git/xen.git#staging --===============5069457920654901281== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============5069457920654901281==-- From xen-changelog-bounces@lists.xenproject.org Wed Feb 20 11:35:20 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Wed, 20 Feb 2019 11:35:20 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gwQ9l-00088b-NG; Wed, 20 Feb 2019 11:35:17 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gwQ9k-00088U-FJ for xen-changelog@lists.xenproject.org; Wed, 20 Feb 2019 11:35:16 +0000 X-Inumbo-ID: 9784bdec-3503-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 9784bdec-3503-11e9-bc90-bc764e045a96; Wed, 20 Feb 2019 11:35:15 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gwQ7c-0008H1-He for xen-changelog@lists.xenproject.org; Wed, 20 Feb 2019 11:33:04 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gwQ7c-0007zB-Eq for xen-changelog@lists.xenproject.org; Wed, 20 Feb 2019 11:33:04 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 20 Feb 2019 11:33:04 +0000 Subject: [Xen-changelog] [xen staging] libs/gnttab: add missing FreeBSD functions X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============3096505129637645935==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============3096505129637645935== Content-Type: text/plain commit 1e12872d29cc36c61894e347dd3409d7d206699d Author: Roger Pau Monne AuthorDate: Tue Feb 19 16:26:08 2019 +0100 Commit: Wei Liu CommitDate: Wed Feb 20 11:27:48 2019 +0000 libs/gnttab: add missing FreeBSD functions The FreeBSD implementation is missing the following functions: osdep_gnttab_dmabuf_exp_from_refs osdep_gnttab_dmabuf_exp_wait_released osdep_gnttab_dmabuf_imp_to_refs osdep_gnttab_dmabuf_imp_release Which all deal with dmabufs, that only exists on Linux. Implement them using abort, since such functions should never be called on FreeBSD. FTR, I realized those functions where missing when attempting to use pygrub: Traceback (most recent call last): File "/usr/local/lib/xen/bin/pygrub", line 19, in import xen.lowlevel.xc ImportError: /usr/local/lib/libxengnttab.so.1: Undefined symbol "osdep_gnttab_dmabuf_exp_from_refs" Fixes: ee8105 ("libgnttab: Add support for Linux dma-buf") Signed-off-by: Roger Pau Monné Acked-by: Wei Liu Release-acked-by: Juergen Gross Reviewed-by: Oleksandr Andrushchenko --- tools/libs/gnttab/freebsd.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/tools/libs/gnttab/freebsd.c b/tools/libs/gnttab/freebsd.c index 5c12fe9b0b..886b588303 100644 --- a/tools/libs/gnttab/freebsd.c +++ b/tools/libs/gnttab/freebsd.c @@ -308,6 +308,35 @@ int osdep_gntshr_unshare(xengntshr_handle *xgs, } /* + * The functions below are Linux-isms that will likely never be implemented + * on FreeBSD unless FreeBSD also implements something akin to Linux dmabuf. + */ +int osdep_gnttab_dmabuf_exp_from_refs(xengnttab_handle *xgt, uint32_t domid, + uint32_t flags, uint32_t count, + const uint32_t *refs, + uint32_t *dmabuf_fd) +{ + abort(); +} + +int osdep_gnttab_dmabuf_exp_wait_released(xengnttab_handle *xgt, + uint32_t fd, uint32_t wait_to_ms) +{ + abort(); +} + +int osdep_gnttab_dmabuf_imp_to_refs(xengnttab_handle *xgt, uint32_t domid, + uint32_t fd, uint32_t count, uint32_t *refs) +{ + abort(); +} + +int osdep_gnttab_dmabuf_imp_release(xengnttab_handle *xgt, uint32_t fd) +{ + abort(); +} + +/* * Local variables: * mode: C * c-file-style: "BSD" -- generated by git-patchbot for /home/xen/git/xen.git#staging --===============3096505129637645935== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============3096505129637645935==-- From xen-changelog-bounces@lists.xenproject.org Wed Feb 20 13:55:09 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Wed, 20 Feb 2019 13:55:09 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gwSL5-000432-NL; Wed, 20 Feb 2019 13:55:07 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gwSL4-00042x-KV for xen-changelog@lists.xenproject.org; Wed, 20 Feb 2019 13:55:06 +0000 X-Inumbo-ID: 1fd344db-3517-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 1fd344db-3517-11e9-bc90-bc764e045a96; Wed, 20 Feb 2019 13:55:04 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gwSL2-0004EP-FB for xen-changelog@lists.xenproject.org; Wed, 20 Feb 2019 13:55:04 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gwSL2-0001O9-Ce for xen-changelog@lists.xenproject.org; Wed, 20 Feb 2019 13:55:04 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 20 Feb 2019 13:55:04 +0000 Subject: [Xen-changelog] [xen staging] x86/vpmu: Improve documentation and parsing for vpmu= X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDNjNTU1Mjk1NGM1YzYzODYwY2NjMDFjNmJjNGY5YzA3N2JjMjYwNzIKQXV0aG9yOiAg 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lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gwUSh-0000A9-KK; Wed, 20 Feb 2019 16:11:07 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gwUSg-0000A4-KL for xen-changelog@lists.xenproject.org; Wed, 20 Feb 2019 16:11:06 +0000 X-Inumbo-ID: 1fb1fe72-352a-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 1fb1fe72-352a-11e9-bc90-bc764e045a96; Wed, 20 Feb 2019 16:11:05 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gwUSe-0007Tv-M5 for xen-changelog@lists.xenproject.org; Wed, 20 Feb 2019 16:11:04 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gwUSe-0001Dx-JB for xen-changelog@lists.xenproject.org; Wed, 20 Feb 2019 16:11:04 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 20 Feb 2019 16:11:04 +0000 Subject: [Xen-changelog] [xen staging] x86/pmtimer: fix hvm_acpi_sleep_button behavior X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGIyMmM5MDBjNDRhMmRiOGRiMWM1M2UyNjllMTUyMjA2ZTU1YzI3M2YKQXV0aG9yOiAg ICAgVmFyYWQgR2F1dGFtIDx2cmRAYW1hem9uLmRlPgpBdXRob3JEYXRlOiBXZWQgRmViIDIwIDE3 OjA2OjI1IDIwMTkgKzAxMDAKQ29tbWl0OiAgICAgSmFuIEJldWxpY2ggPGpiZXVsaWNoQHN1c2Uu Y29tPgpDb21taXREYXRlOiBXZWQgRmViIDIwIDE3OjA2OjI1IDIwMTkgKzAxMDAKCiAgICB4ODYv cG10aW1lcjogZml4IGh2bV9hY3BpX3NsZWVwX2J1dHRvbiBiZWhhdmlvcgogICAgCiAgICBDb21t 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xen-changelog@lists.xenproject.org; Wed, 20 Feb 2019 16:11:15 +0000 X-Inumbo-ID: 25c4d4ba-352a-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 25c4d4ba-352a-11e9-bc90-bc764e045a96; Wed, 20 Feb 2019 16:11:15 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gwUSo-0007U3-SL for xen-changelog@lists.xenproject.org; Wed, 20 Feb 2019 16:11:14 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gwUSo-0001EQ-Pl for xen-changelog@lists.xenproject.org; Wed, 20 Feb 2019 16:11:14 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Wed, 20 Feb 2019 16:11:14 +0000 Subject: [Xen-changelog] [xen staging] x86/shadow: don't pass wrong L4 MFN to guest_walk_tables() X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IGRiMmFmMjNkMTUwNzc2MDVmMjg2ZDhlZjg2YzhmNWQ5YzFiODMwMmEKQXV0aG9yOiAg ICAgSmFuIEJldWxpY2ggPGpiZXVsaWNoQHN1c2UuY29tPgpBdXRob3JEYXRlOiBXZWQgRmViIDIw IDE3OjA3OjE3IDIwMTkgKzAxMDAKQ29tbWl0OiAgICAgSmFuIEJldWxpY2ggPGpiZXVsaWNoQHN1 c2UuY29tPgpDb21taXREYXRlOiBXZWQgRmViIDIwIDE3OjA3OjE3IDIwMTkgKzAxMDAKCiAgICB4 ODYvc2hhZG93OiBkb24ndCBwYXNzIHdyb25nIEw0IE1GTiB0byBndWVzdF93YWxrX3RhYmxlcygp CiAgICAKICAgIDY0LWJpdCBQViBndWVzdCB1c2VyIG1vZGUgcnVucyBvbiBhIGRpZmZlcmVudCBM NCB0YWJsZS4gTWFrZSBzdXJlCiAgICAtIHRoZSBhY2Nlc3NlZCBiaXQgZ2V0cyBzZXQgaW4gdGhl IGNvcnJlY3QgdGFibGUgKGFuZCBpbiBsb2ctZGlydHkKICAgICAgbW9kZSB0aGUgY29ycmVjdCBw 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aHR0cHM6Ly9saXN0cy54ZW5wcm9qZWN0Lm9yZy94ZW4tY2hhbmdlbG9n From xen-changelog-bounces@lists.xenproject.org Fri Feb 22 14:44:09 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Fri, 22 Feb 2019 14:44:09 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gxC3b-0007NA-Is; Fri, 22 Feb 2019 14:44:07 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gxC3a-0007N5-7h for xen-changelog@lists.xenproject.org; Fri, 22 Feb 2019 14:44:06 +0000 X-Inumbo-ID: 4d57f8d9-36b0-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 4d57f8d9-36b0-11e9-bc90-bc764e045a96; Fri, 22 Feb 2019 14:44:05 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gxC3Y-00010f-W4 for xen-changelog@lists.xenproject.org; Fri, 22 Feb 2019 14:44:04 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gxC3Y-0006Pi-TX for xen-changelog@lists.xenproject.org; Fri, 22 Feb 2019 14:44:04 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 22 Feb 2019 14:44:04 +0000 Subject: [Xen-changelog] [xen staging] x86: Improve the efficiency of domain_relinquish_resources() X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDBkZmZmZTAxZDU2ODFlZGU2YTUwYzZiNTcxMzEzMjBkOWY0YTMzNjEKQXV0aG9yOiAg 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([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gxC3j-00010n-5l for xen-changelog@lists.xenproject.org; Fri, 22 Feb 2019 14:44:15 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gxC3j-0006QQ-3M for xen-changelog@lists.xenproject.org; Fri, 22 Feb 2019 14:44:15 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Fri, 22 Feb 2019 14:44:15 +0000 Subject: [Xen-changelog] [xen staging] x86/altp2m: Rework #VE enable/disable paths X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" 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for xen-changelog@lists.xenproject.org; Mon, 25 Feb 2019 22:33:24 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 25 Feb 2019 22:33:24 +0000 Subject: [Xen-changelog] [xen staging] xen/arm: domain_build: Panic message should end with a newline X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDFjODU4OTI4MDA5YzUxMTc4YTljNmNhYzllNDIzNDNlZTgxZGZlMzcKQXV0aG9yOiAg ICAgSnVsaWVuIEdyYWxsIDxqdWxpZW4uZ3JhbGxAYXJtLmNvbT4KQXV0aG9yRGF0ZTogTW9uIEZl YiAxOCAxMDoyMTowNiAyMDE5ICswMDAwCkNvbW1pdDogICAgIFN0ZWZhbm8gU3RhYmVsbGluaSA8 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+0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gyOqC-00076v-Bo for xen-changelog@lists.xenproject.org; Mon, 25 Feb 2019 22:35:16 +0000 X-Inumbo-ID: 9e816984-394d-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 9e816984-394d-11e9-bc90-bc764e045a96; Mon, 25 Feb 2019 22:35:14 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gyOo4-0002cQ-DH for xen-changelog@lists.xenproject.org; Mon, 25 Feb 2019 22:33:04 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gyOo4-0003S6-AD for xen-changelog@lists.xenproject.org; Mon, 25 Feb 2019 22:33:04 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 25 Feb 2019 22:33:04 +0000 Subject: [Xen-changelog] [xen staging] xen/arm: psci: Populate arm_smccc_res on PSCI_FEATURES call X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDgzYmE2NGMzZWJmMGU4ZDM4MzRlM2U1Yjc5YWNiMmNlYjJjZDliYmEKQXV0aG9yOiAg ICAgSnVsaWVuIEdyYWxsIDxqdWxpZW4uZ3JhbGxAYXJtLmNvbT4KQXV0aG9yRGF0ZTogTW9uIEZl YiAxOCAwOTo0MjoyNyAyMDE5ICswMDAwCkNvbW1pdDogICAgIFN0ZWZhbm8gU3RhYmVsbGluaSA8 c3N0YWJlbGxpbmlAa2VybmVsLm9yZz4KQ29tbWl0RGF0ZTogTW9uIEZlYiAyNSAxNDoyNzoyNiAy MDE5IC0wODAwCgogICAgeGVuL2FybTogcHNjaTogUG9wdWxhdGUgYXJtX3NtY2NjX3JlcyBvbiBQ U0NJX0ZFQVRVUkVTIGNhbGwKICAgIAogICAgQ29tbWl0IDBiYzZhNjhkYTUgInhlbi9hcm06IFJl 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xen-changelog@lists.xenproject.org; Mon, 25 Feb 2019 22:35:26 +0000 X-Inumbo-ID: a49a3d74-394d-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id a49a3d74-394d-11e9-bc90-bc764e045a96; Mon, 25 Feb 2019 22:35:25 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gyOoE-0002cW-JD for xen-changelog@lists.xenproject.org; Mon, 25 Feb 2019 22:33:14 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gyOoE-0003Sc-Gd for xen-changelog@lists.xenproject.org; Mon, 25 Feb 2019 22:33:14 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Mon, 25 Feb 2019 22:33:14 +0000 Subject: [Xen-changelog] [xen staging] xen/arm: domain_build: Require the property "cpus" when building a domU X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 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from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 94e5f4dc-39df-11e9-bde9-e78f06c2db66; Tue, 26 Feb 2019 16:00:05 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gyf9I-0000gS-RW for xen-changelog@lists.xenproject.org; Tue, 26 Feb 2019 16:00:04 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gyf9I-0003Gb-Ng for xen-changelog@lists.xenproject.org; Tue, 26 Feb 2019 16:00:04 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Tue, 26 Feb 2019 16:00:04 +0000 Subject: [Xen-changelog] [xen staging] viridian: fix the HvFlushVirtualAddress/List hypercall implementation X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , 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ICAgICAgICBzaWduZWQgaW50IGNyMF9wZyk7CiB1bnNpZ25lZCBsb25nIGh2bV9jcjRfZ3Vlc3Rf dmFsaWRfYml0cyhjb25zdCBzdHJ1Y3QgZG9tYWluICpkLCBib29sIHJlc3RvcmUpOwogCitib29s IGh2bV9mbHVzaF92Y3B1X3RsYihib29sICgqZmx1c2hfdmNwdSkodm9pZCAqY3R4dCwgc3RydWN0 IHZjcHUgKnYpLAorICAgICAgICAgICAgICAgICAgICAgICAgdm9pZCAqY3R4dCk7CiAKICNpZmRl ZiBDT05GSUdfSFZNCiAKLS0KZ2VuZXJhdGVkIGJ5IGdpdC1wYXRjaGJvdCBmb3IgL2hvbWUveGVu L2dpdC94ZW4uZ2l0I3N0YWdpbmcKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fClhlbi1jaGFuZ2Vsb2cgbWFpbGluZyBsaXN0Clhlbi1jaGFuZ2Vsb2dAbGlz dHMueGVucHJvamVjdC5vcmcKaHR0cHM6Ly9saXN0cy54ZW5wcm9qZWN0Lm9yZy94ZW4tY2hhbmdl bG9n From xen-changelog-bounces@lists.xenproject.org Tue Feb 26 16:00:18 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Tue, 26 Feb 2019 16:00:18 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gyf9W-0005Cg-RL; Tue, 26 Feb 2019 16:00:18 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gyf9V-0005CV-G2 for xen-changelog@lists.xenproject.org; Tue, 26 Feb 2019 16:00:17 +0000 X-Inumbo-ID: 9af431e0-39df-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 9af431e0-39df-11e9-bc90-bc764e045a96; Tue, 26 Feb 2019 16:00:15 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gyf9T-0000lW-1L for xen-changelog@lists.xenproject.org; Tue, 26 Feb 2019 16:00:15 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gyf9S-0003Hr-V0 for xen-changelog@lists.xenproject.org; Tue, 26 Feb 2019 16:00:14 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Tue, 26 Feb 2019 16:00:14 +0000 Subject: [Xen-changelog] [xen staging] x86/shadow: don't use 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dHBzOi8vbGlzdHMueGVucHJvamVjdC5vcmcveGVuLWNoYW5nZWxvZw== From xen-changelog-bounces@lists.xenproject.org Tue Feb 26 16:00:27 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Tue, 26 Feb 2019 16:00:27 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gyf9f-0005MN-TX; Tue, 26 Feb 2019 16:00:27 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gyf9e-0005MC-RA for xen-changelog@lists.xenproject.org; Tue, 26 Feb 2019 16:00:26 +0000 X-Inumbo-ID: a10326db-39df-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id a10326db-39df-11e9-bc90-bc764e045a96; Tue, 26 Feb 2019 16:00:25 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gyf9d-0000li-7I for xen-changelog@lists.xenproject.org; Tue, 26 Feb 2019 16:00:25 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gyf9d-0003Ik-4d for xen-changelog@lists.xenproject.org; Tue, 26 Feb 2019 16:00:25 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Tue, 26 Feb 2019 16:00:25 +0000 Subject: [Xen-changelog] [xen staging] evtchn: block speculative out-of-bound accesses X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDQ0M2QzYWI2ZGFlZTliZjc3ZWMxY2IyZWE3ZTI1MmZiMGNlNjE2YTgKQXV0aG9yOiAg 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lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gyf9p-0005NB-5S for xen-changelog@lists.xenproject.org; Tue, 26 Feb 2019 16:00:37 +0000 X-Inumbo-ID: a7175240-39df-11e9-9052-83559d3963b5 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id a7175240-39df-11e9-9052-83559d3963b5; Tue, 26 Feb 2019 16:00:35 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gyf9n-0000lq-DF for xen-changelog@lists.xenproject.org; Tue, 26 Feb 2019 16:00:35 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gyf9n-0003Jo-AW for xen-changelog@lists.xenproject.org; Tue, 26 Feb 2019 16:00:35 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Tue, 26 Feb 2019 16:00:35 +0000 Subject: [Xen-changelog] [xen staging] x86/vioapic: block speculative out-of-bound accesses X-BeenThere: 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aGFuZ2Vsb2c= From xen-changelog-bounces@lists.xenproject.org Thu Feb 28 11:55:13 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 28 Feb 2019 11:55:13 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gzKHO-0002xm-UY; Thu, 28 Feb 2019 11:55:10 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gzKHN-0002xh-QR for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 11:55:09 +0000 X-Inumbo-ID: afcdd7d0-3b4f-11e9-9d3c-03a2a03626f4 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id afcdd7d0-3b4f-11e9-9d3c-03a2a03626f4; Thu, 28 Feb 2019 11:55:05 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gzKHI-0006z1-P9 for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 11:55:04 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gzKHI-0000ne-Li for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 11:55:04 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 28 Feb 2019 11:55:04 +0000 Subject: [Xen-changelog] [xen staging] x86/vmx: Fix security issue when a guest balloons out the #VE info page X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDBlYzliNGVmMzE0OGUwNTJiZDhhZGY4MzgwMGQ3ZDY4MTU3MWY0OWUKQXV0aG9yOiAg 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LQpnZW5lcmF0ZWQgYnkgZ2l0LXBhdGNoYm90IGZvciAvaG9tZS94ZW4vZ2l0L3hlbi5naXQjc3Rh Z2luZwoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVu LWNoYW5nZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9y ZwpodHRwczovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= From xen-changelog-bounces@lists.xenproject.org Thu Feb 28 11:55:17 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 28 Feb 2019 11:55:17 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gzKHV-0002yK-03; Thu, 28 Feb 2019 11:55:16 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gzKHU-0002yC-Bb for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 11:55:16 +0000 X-Inumbo-ID: b5dfafdc-3b4f-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id b5dfafdc-3b4f-11e9-bc90-bc764e045a96; Thu, 28 Feb 2019 11:55:15 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gzKHS-0006zX-V9 for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 11:55:14 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gzKHS-0000oC-Sc for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 11:55:14 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 28 Feb 2019 11:55:14 +0000 Subject: [Xen-changelog] [xen staging] x86/vmx: Properly flush the TLB when an altp2m is modified X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; 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2019 11:55:25 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gzKHd-0006zj-4Z for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 11:55:25 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gzKHd-0000oo-1y for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 11:55:25 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 28 Feb 2019 11:55:25 +0000 Subject: [Xen-changelog] [xen staging] tools/ocaml: Dup2 /dev/null to stdin in daemonize() X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: 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patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 28 Feb 2019 11:55:35 +0000 Subject: [Xen-changelog] [xen staging] x86/hvm: Increase the triple fault log message level to XENLOG_ERR X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" Y29tbWl0IDFjOGNhMTg1ZTNjNmUwMDMzOTg0NzFlZGQ5ZGJhYzBjZDExODEzN2MKQXV0aG9yOiAg ICAgQW5kcmV3IENvb3BlciA8YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT4KQXV0aG9yRGF0ZTog VGh1IEZlYiAyOCAxMDo0ODoxNiAyMDE5ICswMDAwCkNvbW1pdDogICAgIEFuZHJldyBDb29wZXIg PGFuZHJldy5jb29wZXIzQGNpdHJpeC5jb20+CkNvbW1pdERhdGU6IFRodSBGZWIgMjggMTE6MTY6 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(Exim 4.89) (envelope-from ) id 1gzMEH-0000jd-VC for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 14:00:05 +0000 X-Inumbo-ID: 2620d551-3b61-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 2620d551-3b61-11e9-bc90-bc764e045a96; Thu, 28 Feb 2019 14:00:05 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gzMEG-00014r-P9 for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 14:00:04 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gzMEG-00021N-MO for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 14:00:04 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 28 Feb 2019 14:00:04 +0000 Subject: [Xen-changelog] [xen staging] x86/altp2m: Fix build with !CONFIG_HVM X-BeenThere: xen-changelog@lists.xenproject.org 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(envelope-from ) id 1gzMES-0000qG-9U for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 14:00:16 +0000 X-Inumbo-ID: 2c349ed7-3b61-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 2c349ed7-3b61-11e9-bc90-bc764e045a96; Thu, 28 Feb 2019 14:00:15 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gzMEQ-00015e-Uy for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 14:00:14 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gzMEQ-00022h-SI for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 14:00:14 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 28 Feb 2019 14:00:14 +0000 Subject: [Xen-changelog] [xen staging] x86/nmi: correctly check MSB of P6 performance counter MSR in watchdog X-BeenThere: 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by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gzPj4-0007eP-II for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 17:44:06 +0000 X-Inumbo-ID: 7141ae0c-3b80-11e9-bc90-bc764e045a96 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 7141ae0c-3b80-11e9-bc90-bc764e045a96; Thu, 28 Feb 2019 17:44:05 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gzPj3-0005wV-6a for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 17:44:05 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gzPj3-0005VJ-3w for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 17:44:05 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 28 Feb 2019 17:44:05 +0000 Subject: [Xen-changelog] [xen staging] x86/p2m: pass the p2m to write_p2m_entry handlers X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============2217723985182003677==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============2217723985182003677== Content-Type: text/plain commit 9b94b18064ccedc90c04d1e0ea13b7ca88081e67 Author: Roger Pau Monne AuthorDate: Wed Feb 27 12:09:01 2019 +0100 Commit: George Dunlap CommitDate: Thu Feb 28 17:35:20 2019 +0000 x86/p2m: pass the p2m to write_p2m_entry handlers Current callers pass the p2m to paging_write_p2m_entry, but the implementation specific handlers of the write_p2m_entry hook instead of a p2m get a domain struct due to the handling done in paging_write_p2m_entry. Change the code so that the implementations of write_p2m_entry take a p2m instead of a domain. This is a non-functional change, but will be used by follow up patches. Signed-off-by: Roger Pau Monné Reviewed-by: Wei Liu Reviewed-by: George Dunlap --- xen/arch/x86/mm/hap/hap.c | 3 ++- xen/arch/x86/mm/paging.c | 2 +- xen/arch/x86/mm/shadow/common.c | 4 +++- xen/arch/x86/mm/shadow/none.c | 2 +- xen/arch/x86/mm/shadow/private.h | 2 +- xen/include/asm-x86/paging.h | 3 ++- 6 files changed, 10 insertions(+), 6 deletions(-) diff --git a/xen/arch/x86/mm/hap/hap.c b/xen/arch/x86/mm/hap/hap.c index 3d651b94c3..28fe48d158 100644 --- a/xen/arch/x86/mm/hap/hap.c +++ b/xen/arch/x86/mm/hap/hap.c @@ -709,9 +709,10 @@ static void hap_update_paging_modes(struct vcpu *v) } static void -hap_write_p2m_entry(struct domain *d, unsigned long gfn, l1_pgentry_t *p, +hap_write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, l1_pgentry_t *p, l1_pgentry_t new, unsigned int level) { + struct domain *d = p2m->domain; uint32_t old_flags; bool_t flush_nestedp2m = 0; diff --git a/xen/arch/x86/mm/paging.c b/xen/arch/x86/mm/paging.c index d5836eb688..e6ed3006fe 100644 --- a/xen/arch/x86/mm/paging.c +++ b/xen/arch/x86/mm/paging.c @@ -941,7 +941,7 @@ void paging_write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, if ( v->domain != d ) v = d->vcpu ? d->vcpu[0] : NULL; if ( likely(v && paging_mode_enabled(d) && paging_get_hostmode(v) != NULL) ) - paging_get_hostmode(v)->write_p2m_entry(d, gfn, p, new, level); + paging_get_hostmode(v)->write_p2m_entry(p2m, gfn, p, new, level); else safe_write_pte(p, new); } diff --git a/xen/arch/x86/mm/shadow/common.c b/xen/arch/x86/mm/shadow/common.c index 07840ff727..6c67ef4996 100644 --- a/xen/arch/x86/mm/shadow/common.c +++ b/xen/arch/x86/mm/shadow/common.c @@ -3177,10 +3177,12 @@ static void sh_unshadow_for_p2m_change(struct domain *d, unsigned long gfn, } void -shadow_write_p2m_entry(struct domain *d, unsigned long gfn, +shadow_write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, l1_pgentry_t *p, l1_pgentry_t new, unsigned int level) { + struct domain *d = p2m->domain; + paging_lock(d); /* If there are any shadows, update them. But if shadow_teardown() diff --git a/xen/arch/x86/mm/shadow/none.c b/xen/arch/x86/mm/shadow/none.c index 4de645a433..316002771d 100644 --- a/xen/arch/x86/mm/shadow/none.c +++ b/xen/arch/x86/mm/shadow/none.c @@ -60,7 +60,7 @@ static void _update_paging_modes(struct vcpu *v) ASSERT_UNREACHABLE(); } -static void _write_p2m_entry(struct domain *d, unsigned long gfn, +static void _write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, l1_pgentry_t *p, l1_pgentry_t new, unsigned int level) { diff --git a/xen/arch/x86/mm/shadow/private.h b/xen/arch/x86/mm/shadow/private.h index e8ed7ac714..0aaed1edfc 100644 --- a/xen/arch/x86/mm/shadow/private.h +++ b/xen/arch/x86/mm/shadow/private.h @@ -372,7 +372,7 @@ extern int sh_remove_write_access(struct domain *d, mfn_t readonly_mfn, unsigned long fault_addr); /* Functions that atomically write PT/P2M entries and update state */ -void shadow_write_p2m_entry(struct domain *d, unsigned long gfn, +void shadow_write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, l1_pgentry_t *p, l1_pgentry_t new, unsigned int level); diff --git a/xen/include/asm-x86/paging.h b/xen/include/asm-x86/paging.h index fdcc22844b..7ec09d7b11 100644 --- a/xen/include/asm-x86/paging.h +++ b/xen/include/asm-x86/paging.h @@ -124,7 +124,8 @@ struct paging_mode { void (*update_cr3 )(struct vcpu *v, int do_locking, bool noflush); void (*update_paging_modes )(struct vcpu *v); - void (*write_p2m_entry )(struct domain *d, unsigned long gfn, + void (*write_p2m_entry )(struct p2m_domain *p2m, + unsigned long gfn, l1_pgentry_t *p, l1_pgentry_t new, unsigned int level); -- generated by git-patchbot for /home/xen/git/xen.git#staging --===============2217723985182003677== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============2217723985182003677==-- From xen-changelog-bounces@lists.xenproject.org Thu Feb 28 17:44:20 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 28 Feb 2019 17:44:20 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gzPjI-0007hE-Rn; Thu, 28 Feb 2019 17:44:20 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gzPjH-0007gx-46 for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 17:44:19 +0000 X-Inumbo-ID: 775fea92-3b80-11e9-8bbb-3305dc7b1f8f Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 775fea92-3b80-11e9-8bbb-3305dc7b1f8f; Thu, 28 Feb 2019 17:44:15 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gzPjD-0005wh-FI for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 17:44:15 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gzPjD-0005W0-CF for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 17:44:15 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 28 Feb 2019 17:44:15 +0000 Subject: [Xen-changelog] [xen staging] x86/mm: split p2m ioreq server pages special handling into helper X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============8322573619316479686==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============8322573619316479686== Content-Type: text/plain commit c7a4c088ad1c8d9440d494589239f48e2ca52d7f Author: Roger Pau Monne AuthorDate: Wed Feb 27 12:09:02 2019 +0100 Commit: George Dunlap CommitDate: Thu Feb 28 17:35:21 2019 +0000 x86/mm: split p2m ioreq server pages special handling into helper So that it can be shared by both ept, npt and shadow code, instead of duplicating it. No change in functionality intended. Signed-off-by: Roger Pau Monné Reviewed-by: Paul Durrant Reviewed-by: George Dunlap Reviewed-by: Kevin Tian --- xen/arch/x86/mm/hap/hap.c | 3 +++ xen/arch/x86/mm/p2m-ept.c | 55 ++++++++++++++--------------------------- xen/arch/x86/mm/p2m-pt.c | 24 ------------------ xen/arch/x86/mm/shadow/common.c | 3 +++ xen/include/asm-x86/p2m.h | 32 ++++++++++++++++++++++++ 5 files changed, 56 insertions(+), 61 deletions(-) diff --git a/xen/arch/x86/mm/hap/hap.c b/xen/arch/x86/mm/hap/hap.c index 28fe48d158..2db7f2c04a 100644 --- a/xen/arch/x86/mm/hap/hap.c +++ b/xen/arch/x86/mm/hap/hap.c @@ -735,6 +735,9 @@ hap_write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, l1_pgentry_t *p, && perms_strictly_increased(old_flags, l1e_get_flags(new)) ); } + p2m_entry_modify(p2m, p2m_flags_to_type(l1e_get_flags(new)), + p2m_flags_to_type(old_flags), level); + safe_write_pte(p, new); if ( old_flags & _PAGE_PRESENT ) flush_tlb_mask(d->dirty_cpumask); diff --git a/xen/arch/x86/mm/p2m-ept.c b/xen/arch/x86/mm/p2m-ept.c index bb562607f7..0ece6608cb 100644 --- a/xen/arch/x86/mm/p2m-ept.c +++ b/xen/arch/x86/mm/p2m-ept.c @@ -46,7 +46,8 @@ static inline bool_t is_epte_valid(ept_entry_t *e) } /* returns : 0 for success, -errno otherwise */ -static int atomic_write_ept_entry(ept_entry_t *entryptr, ept_entry_t new, +static int atomic_write_ept_entry(struct p2m_domain *p2m, + ept_entry_t *entryptr, ept_entry_t new, int level) { int rc; @@ -89,6 +90,8 @@ static int atomic_write_ept_entry(ept_entry_t *entryptr, ept_entry_t new, if ( unlikely(p2m_is_foreign(entryptr->sa_p2mt)) && check_foreign ) oldmfn = entryptr->mfn; + p2m_entry_modify(p2m, new.sa_p2mt, entryptr->sa_p2mt, level); + write_atomic(&entryptr->epte, new.epte); if ( unlikely(oldmfn != mfn_x(INVALID_MFN)) ) @@ -390,7 +393,8 @@ static int ept_next_level(struct p2m_domain *p2m, bool_t read_only, * present entries in the given page table, optionally marking the entries * also for their subtrees needing P2M type re-calculation. */ -static bool_t ept_invalidate_emt(mfn_t mfn, bool_t recalc, int level) +static bool_t ept_invalidate_emt(struct p2m_domain *p2m, mfn_t mfn, + bool_t recalc, int level) { int rc; ept_entry_t *epte = map_domain_page(mfn); @@ -408,7 +412,7 @@ static bool_t ept_invalidate_emt(mfn_t mfn, bool_t recalc, int level) e.emt = MTRR_NUM_TYPES; if ( recalc ) e.recalc = 1; - rc = atomic_write_ept_entry(&epte[i], e, level); + rc = atomic_write_ept_entry(p2m, &epte[i], e, level); ASSERT(rc == 0); changed = 1; } @@ -459,7 +463,7 @@ static int ept_invalidate_emt_range(struct p2m_domain *p2m, rc = -ENOMEM; goto out; } - wrc = atomic_write_ept_entry(&table[index], split_ept_entry, i); + wrc = atomic_write_ept_entry(p2m, &table[index], split_ept_entry, i); ASSERT(wrc == 0); for ( ; i > target; --i ) @@ -479,7 +483,7 @@ static int ept_invalidate_emt_range(struct p2m_domain *p2m, { e.emt = MTRR_NUM_TYPES; e.recalc = 1; - wrc = atomic_write_ept_entry(&table[index], e, target); + wrc = atomic_write_ept_entry(p2m, &table[index], e, target); ASSERT(wrc == 0); rc = 1; } @@ -549,17 +553,11 @@ static int resolve_misconfig(struct p2m_domain *p2m, unsigned long gfn) nt = p2m_recalc_type(e.recalc, e.sa_p2mt, p2m, gfn + i); if ( nt != e.sa_p2mt ) { - if ( e.sa_p2mt == p2m_ioreq_server ) - { - ASSERT(p2m->ioreq.entry_count > 0); - p2m->ioreq.entry_count--; - } - e.sa_p2mt = nt; ept_p2m_type_to_flags(p2m, &e, e.sa_p2mt, e.access); } e.recalc = 0; - wrc = atomic_write_ept_entry(&epte[i], e, level); + wrc = atomic_write_ept_entry(p2m, &epte[i], e, level); ASSERT(wrc == 0); } } @@ -595,7 +593,7 @@ static int resolve_misconfig(struct p2m_domain *p2m, unsigned long gfn) { if ( ept_split_super_page(p2m, &e, level, level - 1) ) { - wrc = atomic_write_ept_entry(&epte[i], e, level); + wrc = atomic_write_ept_entry(p2m, &epte[i], e, level); ASSERT(wrc == 0); unmap_domain_page(epte); mfn = e.mfn; @@ -610,7 +608,7 @@ static int resolve_misconfig(struct p2m_domain *p2m, unsigned long gfn) e.recalc = 0; if ( recalc && p2m_is_changeable(e.sa_p2mt) ) ept_p2m_type_to_flags(p2m, &e, e.sa_p2mt, e.access); - wrc = atomic_write_ept_entry(&epte[i], e, level); + wrc = atomic_write_ept_entry(p2m, &epte[i], e, level); ASSERT(wrc == 0); } @@ -621,11 +619,11 @@ static int resolve_misconfig(struct p2m_domain *p2m, unsigned long gfn) if ( e.emt == MTRR_NUM_TYPES ) { ASSERT(is_epte_present(&e)); - ept_invalidate_emt(_mfn(e.mfn), e.recalc, level); + ept_invalidate_emt(p2m, _mfn(e.mfn), e.recalc, level); smp_wmb(); e.emt = 0; e.recalc = 0; - wrc = atomic_write_ept_entry(&epte[i], e, level); + wrc = atomic_write_ept_entry(p2m, &epte[i], e, level); ASSERT(wrc == 0); unmap_domain_page(epte); rc = 1; @@ -786,7 +784,7 @@ ept_set_entry(struct p2m_domain *p2m, gfn_t gfn_, mfn_t mfn, /* now install the newly split ept sub-tree */ /* NB: please make sure domian is paused and no in-fly VT-d DMA. */ - rc = atomic_write_ept_entry(ept_entry, split_ept_entry, i); + rc = atomic_write_ept_entry(p2m, ept_entry, split_ept_entry, i); ASSERT(rc == 0); /* then move to the level we want to make real changes */ @@ -833,24 +831,7 @@ ept_set_entry(struct p2m_domain *p2m, gfn_t gfn_, mfn_t mfn, new_entry.suppress_ve = is_epte_valid(&old_entry) ? old_entry.suppress_ve : 1; - /* - * p2m_ioreq_server is only used for 4K pages, so the - * count is only done on ept page table entries. - */ - if ( p2mt == p2m_ioreq_server ) - { - ASSERT(i == 0); - p2m->ioreq.entry_count++; - } - - if ( ept_entry->sa_p2mt == p2m_ioreq_server ) - { - ASSERT(i == 0); - ASSERT(p2m->ioreq.entry_count > 0); - p2m->ioreq.entry_count--; - } - - rc = atomic_write_ept_entry(ept_entry, new_entry, target); + rc = atomic_write_ept_entry(p2m, ept_entry, new_entry, target); if ( unlikely(rc) ) old_entry.epte = 0; else @@ -1070,7 +1051,7 @@ static void ept_change_entry_type_global(struct p2m_domain *p2m, if ( !mfn ) return; - if ( ept_invalidate_emt(_mfn(mfn), 1, p2m->ept.wl) ) + if ( ept_invalidate_emt(p2m, _mfn(mfn), 1, p2m->ept.wl) ) ept_sync_domain(p2m); } @@ -1128,7 +1109,7 @@ static void ept_memory_type_changed(struct p2m_domain *p2m) if ( !mfn ) return; - if ( ept_invalidate_emt(_mfn(mfn), 0, p2m->ept.wl) ) + if ( ept_invalidate_emt(p2m, _mfn(mfn), 0, p2m->ept.wl) ) ept_sync_domain(p2m); } diff --git a/xen/arch/x86/mm/p2m-pt.c b/xen/arch/x86/mm/p2m-pt.c index 52eaa24b18..04e9d81cf6 100644 --- a/xen/arch/x86/mm/p2m-pt.c +++ b/xen/arch/x86/mm/p2m-pt.c @@ -436,13 +436,6 @@ static int do_recalc(struct p2m_domain *p2m, unsigned long gfn) flags |= _PAGE_PSE; } - if ( ot == p2m_ioreq_server ) - { - ASSERT(p2m->ioreq.entry_count > 0); - ASSERT(level == 0); - p2m->ioreq.entry_count--; - } - e = l1e_from_pfn(mfn, flags); p2m_add_iommu_flags(&e, level, (nt == p2m_ram_rw) @@ -616,8 +609,6 @@ p2m_pt_set_entry(struct p2m_domain *p2m, gfn_t gfn_, mfn_t mfn, if ( page_order == PAGE_ORDER_4K ) { - p2m_type_t p2mt_old; - rc = p2m_next_level(p2m, &table, &gfn_remainder, gfn, L2_PAGETABLE_SHIFT - PAGE_SHIFT, L2_PAGETABLE_ENTRIES, 1, 1); @@ -641,21 +632,6 @@ p2m_pt_set_entry(struct p2m_domain *p2m, gfn_t gfn_, mfn_t mfn, if ( entry_content.l1 != 0 ) p2m_add_iommu_flags(&entry_content, 0, iommu_pte_flags); - p2mt_old = p2m_flags_to_type(l1e_get_flags(*p2m_entry)); - - /* - * p2m_ioreq_server is only used for 4K pages, so - * the count is only done for level 1 entries. - */ - if ( p2mt == p2m_ioreq_server ) - p2m->ioreq.entry_count++; - - if ( p2mt_old == p2m_ioreq_server ) - { - ASSERT(p2m->ioreq.entry_count > 0); - p2m->ioreq.entry_count--; - } - /* level 1 entry */ p2m->write_p2m_entry(p2m, gfn, p2m_entry, entry_content, 1); /* NB: paging_write_p2m_entry() handles tlb flushes properly */ diff --git a/xen/arch/x86/mm/shadow/common.c b/xen/arch/x86/mm/shadow/common.c index 6c67ef4996..de7abf7150 100644 --- a/xen/arch/x86/mm/shadow/common.c +++ b/xen/arch/x86/mm/shadow/common.c @@ -3190,6 +3190,9 @@ shadow_write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, if ( likely(d->arch.paging.shadow.total_pages != 0) ) sh_unshadow_for_p2m_change(d, gfn, p, new, level); + p2m_entry_modify(p2m, p2m_flags_to_type(l1e_get_flags(new)), + p2m_flags_to_type(l1e_get_flags(*p)), level); + /* Update the entry with new content */ safe_write_pte(p, new); diff --git a/xen/include/asm-x86/p2m.h b/xen/include/asm-x86/p2m.h index 2095076556..834d49d2d4 100644 --- a/xen/include/asm-x86/p2m.h +++ b/xen/include/asm-x86/p2m.h @@ -932,6 +932,38 @@ int p2m_set_ioreq_server(struct domain *d, unsigned int flags, struct hvm_ioreq_server *p2m_get_ioreq_server(struct domain *d, unsigned int *flags); +static inline void p2m_entry_modify(struct p2m_domain *p2m, p2m_type_t nt, + p2m_type_t ot, unsigned int level) +{ + if ( level != 1 || nt == ot ) + return; + + switch ( nt ) + { + case p2m_ioreq_server: + /* + * p2m_ioreq_server is only used for 4K pages, so + * the count is only done for level 1 entries. + */ + p2m->ioreq.entry_count++; + break; + + default: + break; + } + + switch ( ot ) + { + case p2m_ioreq_server: + ASSERT(p2m->ioreq.entry_count > 0); + p2m->ioreq.entry_count--; + break; + + default: + break; + } +} + #endif /* _XEN_ASM_X86_P2M_H */ /* -- generated by git-patchbot for /home/xen/git/xen.git#staging --===============8322573619316479686== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============8322573619316479686==-- From xen-changelog-bounces@lists.xenproject.org Thu Feb 28 17:44:31 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 28 Feb 2019 17:44:31 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gzPjS-0007jN-Td; Thu, 28 Feb 2019 17:44:30 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gzPjQ-0007j0-Rf for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 17:44:28 +0000 X-Inumbo-ID: 7d727f9e-3b80-11e9-b009-8b2a96ab4b44 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 7d727f9e-3b80-11e9-b009-8b2a96ab4b44; Thu, 28 Feb 2019 17:44:25 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gzPjN-0005xU-Ll for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 17:44:25 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gzPjN-0005WX-JA for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 17:44:25 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 28 Feb 2019 17:44:25 +0000 Subject: [Xen-changelog] [xen staging] p2m: change write_p2m_entry to return an error code X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============7727523015714127422==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============7727523015714127422== Content-Type: text/plain commit 0d0f4d78e5d1e9ecc57e53253437a4d4b09f9d20 Author: Roger Pau Monne AuthorDate: Wed Feb 27 12:09:03 2019 +0100 Commit: George Dunlap CommitDate: Thu Feb 28 17:35:22 2019 +0000 p2m: change write_p2m_entry to return an error code This is in preparation for also changing p2m_entry_modify to return an error code. No functional change intended. Signed-off-by: Roger Pau Monné Reviewed-by: Wei Liu Reviewed-by: George Dunlap --- xen/arch/x86/mm/hap/hap.c | 4 ++- xen/arch/x86/mm/hap/nested_hap.c | 4 ++- xen/arch/x86/mm/p2m-pt.c | 77 ++++++++++++++++++++++++++++++++-------- xen/arch/x86/mm/paging.c | 12 ++++--- xen/arch/x86/mm/shadow/common.c | 4 ++- xen/arch/x86/mm/shadow/none.c | 7 ++-- xen/arch/x86/mm/shadow/private.h | 6 ++-- xen/include/asm-x86/p2m.h | 4 +-- xen/include/asm-x86/paging.h | 8 ++--- 9 files changed, 92 insertions(+), 34 deletions(-) diff --git a/xen/arch/x86/mm/hap/hap.c b/xen/arch/x86/mm/hap/hap.c index 2db7f2c04a..fdf77c59a5 100644 --- a/xen/arch/x86/mm/hap/hap.c +++ b/xen/arch/x86/mm/hap/hap.c @@ -708,7 +708,7 @@ static void hap_update_paging_modes(struct vcpu *v) put_gfn(d, cr3_gfn); } -static void +static int hap_write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, l1_pgentry_t *p, l1_pgentry_t new, unsigned int level) { @@ -746,6 +746,8 @@ hap_write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, l1_pgentry_t *p, if ( flush_nestedp2m ) p2m_flush_nestedp2m(d); + + return 0; } static unsigned long hap_gva_to_gfn_real_mode( diff --git a/xen/arch/x86/mm/hap/nested_hap.c b/xen/arch/x86/mm/hap/nested_hap.c index d2a07a5c79..abe5958a52 100644 --- a/xen/arch/x86/mm/hap/nested_hap.c +++ b/xen/arch/x86/mm/hap/nested_hap.c @@ -71,7 +71,7 @@ /* NESTED VIRT P2M FUNCTIONS */ /********************************************/ -void +int nestedp2m_write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, l1_pgentry_t *p, l1_pgentry_t new, unsigned int level) { @@ -87,6 +87,8 @@ nestedp2m_write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, flush_tlb_mask(p2m->dirty_cpumask); paging_unlock(d); + + return 0; } /********************************************/ diff --git a/xen/arch/x86/mm/p2m-pt.c b/xen/arch/x86/mm/p2m-pt.c index 04e9d81cf6..4a531fdf9d 100644 --- a/xen/arch/x86/mm/p2m-pt.c +++ b/xen/arch/x86/mm/p2m-pt.c @@ -184,6 +184,8 @@ p2m_next_level(struct p2m_domain *p2m, void **table, l1_pgentry_t *p2m_entry, new_entry; void *next; unsigned int flags; + int rc; + mfn_t mfn; if ( !(p2m_entry = p2m_find_entry(*table, gfn_remainder, gfn, shift, max)) ) @@ -194,7 +196,7 @@ p2m_next_level(struct p2m_domain *p2m, void **table, /* PoD/paging: Not present doesn't imply empty. */ if ( !flags ) { - mfn_t mfn = p2m_alloc_ptp(p2m, level); + mfn = p2m_alloc_ptp(p2m, level); if ( mfn_eq(mfn, INVALID_MFN) ) return -ENOMEM; @@ -202,13 +204,14 @@ p2m_next_level(struct p2m_domain *p2m, void **table, new_entry = l1e_from_mfn(mfn, P2M_BASE_FLAGS | _PAGE_RW); p2m_add_iommu_flags(&new_entry, level, IOMMUF_readable|IOMMUF_writable); - p2m->write_p2m_entry(p2m, gfn, p2m_entry, new_entry, level + 1); + rc = p2m->write_p2m_entry(p2m, gfn, p2m_entry, new_entry, level + 1); + if ( rc ) + goto error; } else if ( flags & _PAGE_PSE ) { /* Split superpages pages into smaller ones. */ unsigned long pfn = l1e_get_pfn(*p2m_entry); - mfn_t mfn; l1_pgentry_t *l1_entry; unsigned int i; @@ -250,14 +253,23 @@ p2m_next_level(struct p2m_domain *p2m, void **table, { new_entry = l1e_from_pfn(pfn | (i << ((level - 1) * PAGETABLE_ORDER)), flags); - p2m->write_p2m_entry(p2m, gfn, l1_entry + i, new_entry, level); + rc = p2m->write_p2m_entry(p2m, gfn, l1_entry + i, new_entry, level); + if ( rc ) + { + unmap_domain_page(l1_entry); + goto error; + } } unmap_domain_page(l1_entry); new_entry = l1e_from_mfn(mfn, P2M_BASE_FLAGS | _PAGE_RW); - p2m_add_iommu_flags(&new_entry, level, IOMMUF_readable|IOMMUF_writable); - p2m->write_p2m_entry(p2m, gfn, p2m_entry, new_entry, level + 1); + p2m_add_iommu_flags(&new_entry, level, + IOMMUF_readable|IOMMUF_writable); + rc = p2m->write_p2m_entry(p2m, gfn, p2m_entry, new_entry, + level + 1); + if ( rc ) + goto error; } else ASSERT(flags & _PAGE_PRESENT); @@ -268,6 +280,12 @@ p2m_next_level(struct p2m_domain *p2m, void **table, *table = next; return 0; + + error: + ASSERT(rc && mfn_valid(mfn)); + ASSERT_UNREACHABLE(); + p2m_free_ptp(p2m, mfn_to_page(mfn)); + return rc; } /* @@ -321,7 +339,12 @@ static int p2m_pt_set_recalc_range(struct p2m_domain *p2m, if ( (l1e_get_flags(e) & _PAGE_PRESENT) && !needs_recalc(l1, e) ) { set_recalc(l1, e); - p2m->write_p2m_entry(p2m, first_gfn, pent, e, level); + err = p2m->write_p2m_entry(p2m, first_gfn, pent, e, level); + if ( err ) + { + ASSERT_UNREACHABLE(); + goto out; + } } first_gfn += 1UL << (i * PAGETABLE_ORDER); } @@ -392,14 +415,24 @@ static int do_recalc(struct p2m_domain *p2m, unsigned long gfn) !needs_recalc(l1, ent) ) { set_recalc(l1, ent); - p2m->write_p2m_entry(p2m, gfn - remainder, &ptab[i], - ent, level); + err = p2m->write_p2m_entry(p2m, gfn - remainder, &ptab[i], + ent, level); + if ( err ) + { + ASSERT_UNREACHABLE(); + goto out; + } } remainder -= 1UL << ((level - 1) * PAGETABLE_ORDER); } smp_wmb(); clear_recalc(l1, e); - p2m->write_p2m_entry(p2m, gfn, pent, e, level + 1); + err = p2m->write_p2m_entry(p2m, gfn, pent, e, level + 1); + if ( err ) + { + ASSERT_UNREACHABLE(); + goto out; + } } unmap_domain_page((void *)((unsigned long)pent & PAGE_MASK)); } @@ -444,7 +477,8 @@ static int do_recalc(struct p2m_domain *p2m, unsigned long gfn) } else clear_recalc(l1, e); - p2m->write_p2m_entry(p2m, gfn, pent, e, level + 1); + err = p2m->write_p2m_entry(p2m, gfn, pent, e, level + 1); + ASSERT(!err); } out: @@ -595,8 +629,10 @@ p2m_pt_set_entry(struct p2m_domain *p2m, gfn_t gfn_, mfn_t mfn, if ( entry_content.l1 != 0 ) p2m_add_iommu_flags(&entry_content, 0, iommu_pte_flags); - p2m->write_p2m_entry(p2m, gfn, p2m_entry, entry_content, 3); + rc = p2m->write_p2m_entry(p2m, gfn, p2m_entry, entry_content, 3); /* NB: paging_write_p2m_entry() handles tlb flushes properly */ + if ( rc ) + goto out; } else { @@ -633,8 +669,10 @@ p2m_pt_set_entry(struct p2m_domain *p2m, gfn_t gfn_, mfn_t mfn, p2m_add_iommu_flags(&entry_content, 0, iommu_pte_flags); /* level 1 entry */ - p2m->write_p2m_entry(p2m, gfn, p2m_entry, entry_content, 1); + rc = p2m->write_p2m_entry(p2m, gfn, p2m_entry, entry_content, 1); /* NB: paging_write_p2m_entry() handles tlb flushes properly */ + if ( rc ) + goto out; } else if ( page_order == PAGE_ORDER_2M ) { @@ -669,8 +707,10 @@ p2m_pt_set_entry(struct p2m_domain *p2m, gfn_t gfn_, mfn_t mfn, if ( entry_content.l1 != 0 ) p2m_add_iommu_flags(&entry_content, 0, iommu_pte_flags); - p2m->write_p2m_entry(p2m, gfn, p2m_entry, entry_content, 2); + rc = p2m->write_p2m_entry(p2m, gfn, p2m_entry, entry_content, 2); /* NB: paging_write_p2m_entry() handles tlb flushes properly */ + if ( rc ) + goto out; } /* Track the highest gfn for which we have ever had a valid mapping */ @@ -894,8 +934,15 @@ static void p2m_pt_change_entry_type_global(struct p2m_domain *p2m, if ( (l1e_get_flags(e) & _PAGE_PRESENT) && !needs_recalc(l1, e) ) { + int rc; + set_recalc(l1, e); - p2m->write_p2m_entry(p2m, gfn, &tab[i], e, 4); + rc = p2m->write_p2m_entry(p2m, gfn, &tab[i], e, 4); + if ( rc ) + { + ASSERT_UNREACHABLE(); + break; + } ++changed; } gfn += 1UL << (L4_PAGETABLE_SHIFT - PAGE_SHIFT); diff --git a/xen/arch/x86/mm/paging.c b/xen/arch/x86/mm/paging.c index e6ed3006fe..21db3eceb6 100644 --- a/xen/arch/x86/mm/paging.c +++ b/xen/arch/x86/mm/paging.c @@ -932,18 +932,22 @@ void paging_update_nestedmode(struct vcpu *v) } #endif -void paging_write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, - l1_pgentry_t *p, l1_pgentry_t new, - unsigned int level) +int paging_write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, + l1_pgentry_t *p, l1_pgentry_t new, + unsigned int level) { struct domain *d = p2m->domain; struct vcpu *v = current; + int rc = 0; + if ( v->domain != d ) v = d->vcpu ? d->vcpu[0] : NULL; if ( likely(v && paging_mode_enabled(d) && paging_get_hostmode(v) != NULL) ) - paging_get_hostmode(v)->write_p2m_entry(p2m, gfn, p, new, level); + rc = paging_get_hostmode(v)->write_p2m_entry(p2m, gfn, p, new, level); else safe_write_pte(p, new); + + return rc; } int paging_set_allocation(struct domain *d, unsigned int pages, bool *preempted) diff --git a/xen/arch/x86/mm/shadow/common.c b/xen/arch/x86/mm/shadow/common.c index de7abf7150..c818112360 100644 --- a/xen/arch/x86/mm/shadow/common.c +++ b/xen/arch/x86/mm/shadow/common.c @@ -3176,7 +3176,7 @@ static void sh_unshadow_for_p2m_change(struct domain *d, unsigned long gfn, } } -void +int shadow_write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, l1_pgentry_t *p, l1_pgentry_t new, unsigned int level) @@ -3211,6 +3211,8 @@ shadow_write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, #endif paging_unlock(d); + + return 0; } /**************************************************************************/ diff --git a/xen/arch/x86/mm/shadow/none.c b/xen/arch/x86/mm/shadow/none.c index 316002771d..a70888bd98 100644 --- a/xen/arch/x86/mm/shadow/none.c +++ b/xen/arch/x86/mm/shadow/none.c @@ -60,11 +60,12 @@ static void _update_paging_modes(struct vcpu *v) ASSERT_UNREACHABLE(); } -static void _write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, - l1_pgentry_t *p, l1_pgentry_t new, - unsigned int level) +static int _write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, + l1_pgentry_t *p, l1_pgentry_t new, + unsigned int level) { ASSERT_UNREACHABLE(); + return -EOPNOTSUPP; } static const struct paging_mode sh_paging_none = { diff --git a/xen/arch/x86/mm/shadow/private.h b/xen/arch/x86/mm/shadow/private.h index 0aaed1edfc..580ef3e29e 100644 --- a/xen/arch/x86/mm/shadow/private.h +++ b/xen/arch/x86/mm/shadow/private.h @@ -372,9 +372,9 @@ extern int sh_remove_write_access(struct domain *d, mfn_t readonly_mfn, unsigned long fault_addr); /* Functions that atomically write PT/P2M entries and update state */ -void shadow_write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, - l1_pgentry_t *p, l1_pgentry_t new, - unsigned int level); +int shadow_write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, + l1_pgentry_t *p, l1_pgentry_t new, + unsigned int level); /* Update all the things that are derived from the guest's CR0/CR3/CR4. * Called to initialize paging structures if the paging mode diff --git a/xen/include/asm-x86/p2m.h b/xen/include/asm-x86/p2m.h index 834d49d2d4..f4ec2becbd 100644 --- a/xen/include/asm-x86/p2m.h +++ b/xen/include/asm-x86/p2m.h @@ -265,7 +265,7 @@ struct p2m_domain { unsigned long last_gfn); void (*memory_type_changed)(struct p2m_domain *p2m); - void (*write_p2m_entry)(struct p2m_domain *p2m, + int (*write_p2m_entry)(struct p2m_domain *p2m, unsigned long gfn, l1_pgentry_t *p, l1_pgentry_t new, unsigned int level); long (*audit_p2m)(struct p2m_domain *p2m); @@ -837,7 +837,7 @@ void p2m_flush_nestedp2m(struct domain *d); /* Flushes the np2m specified by np2m_base (if it exists) */ void np2m_flush_base(struct vcpu *v, unsigned long np2m_base); -void nestedp2m_write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, +int nestedp2m_write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, l1_pgentry_t *p, l1_pgentry_t new, unsigned int level); /* diff --git a/xen/include/asm-x86/paging.h b/xen/include/asm-x86/paging.h index 7ec09d7b11..18a7eaeca4 100644 --- a/xen/include/asm-x86/paging.h +++ b/xen/include/asm-x86/paging.h @@ -124,7 +124,7 @@ struct paging_mode { void (*update_cr3 )(struct vcpu *v, int do_locking, bool noflush); void (*update_paging_modes )(struct vcpu *v); - void (*write_p2m_entry )(struct p2m_domain *p2m, + int (*write_p2m_entry )(struct p2m_domain *p2m, unsigned long gfn, l1_pgentry_t *p, l1_pgentry_t new, unsigned int level); @@ -340,9 +340,9 @@ static inline void safe_write_pte(l1_pgentry_t *p, l1_pgentry_t new) * we are writing. */ struct p2m_domain; -void paging_write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, - l1_pgentry_t *p, l1_pgentry_t new, - unsigned int level); +int paging_write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, + l1_pgentry_t *p, l1_pgentry_t new, + unsigned int level); /* * Called from the guest to indicate that the a process is being -- generated by git-patchbot for /home/xen/git/xen.git#staging --===============7727523015714127422== Content-Type: text/plain; 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Thu, 28 Feb 2019 17:44:36 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gzPjX-0005xe-SN for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 17:44:35 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gzPjX-0005X1-PS for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 17:44:35 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 28 Feb 2019 17:44:35 +0000 Subject: [Xen-changelog] [xen staging] x86/mm: handle foreign mappings in p2m_entry_modify X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============2102938460119135871==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============2102938460119135871== Content-Type: text/plain commit ce0224bf96a1a1f82391e27b34b5d21d12a757a5 Author: Roger Pau Monne AuthorDate: Wed Feb 27 12:09:04 2019 +0100 Commit: George Dunlap CommitDate: Thu Feb 28 17:36:14 2019 +0000 x86/mm: handle foreign mappings in p2m_entry_modify So that the specific handling can be removed from atomic_write_ept_entry and be shared with npt and shadow code. This commit also removes the check that prevent non-ept PVH dom0 from mapping foreign pages. Signed-off-by: Roger Pau Monné Reviewed-by: Kevin Tian Reviewed-by: Wei Liu Reviewed-by: George Dunlap --- xen/arch/x86/mm/hap/hap.c | 11 +++++++-- xen/arch/x86/mm/p2m-ept.c | 55 ++++------------------------------------- xen/arch/x86/mm/p2m-pt.c | 7 ------ xen/arch/x86/mm/shadow/common.c | 11 +++++++-- xen/include/asm-x86/p2m.h | 34 ++++++++++++++++++++++--- 5 files changed, 53 insertions(+), 65 deletions(-) diff --git a/xen/arch/x86/mm/hap/hap.c b/xen/arch/x86/mm/hap/hap.c index fdf77c59a5..412a442b6a 100644 --- a/xen/arch/x86/mm/hap/hap.c +++ b/xen/arch/x86/mm/hap/hap.c @@ -715,6 +715,7 @@ hap_write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, l1_pgentry_t *p, struct domain *d = p2m->domain; uint32_t old_flags; bool_t flush_nestedp2m = 0; + int rc; /* We know always use the host p2m here, regardless if the vcpu * is in host or guest mode. The vcpu can be in guest mode by @@ -735,8 +736,14 @@ hap_write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, l1_pgentry_t *p, && perms_strictly_increased(old_flags, l1e_get_flags(new)) ); } - p2m_entry_modify(p2m, p2m_flags_to_type(l1e_get_flags(new)), - p2m_flags_to_type(old_flags), level); + rc = p2m_entry_modify(p2m, p2m_flags_to_type(l1e_get_flags(new)), + p2m_flags_to_type(old_flags), l1e_get_mfn(new), + l1e_get_mfn(*p), level); + if ( rc ) + { + paging_unlock(d); + return rc; + } safe_write_pte(p, new); if ( old_flags & _PAGE_PRESENT ) diff --git a/xen/arch/x86/mm/p2m-ept.c b/xen/arch/x86/mm/p2m-ept.c index 0ece6608cb..e3044bee2e 100644 --- a/xen/arch/x86/mm/p2m-ept.c +++ b/xen/arch/x86/mm/p2m-ept.c @@ -50,60 +50,15 @@ static int atomic_write_ept_entry(struct p2m_domain *p2m, ept_entry_t *entryptr, ept_entry_t new, int level) { - int rc; - unsigned long oldmfn = mfn_x(INVALID_MFN); - bool_t check_foreign = (new.mfn != entryptr->mfn || - new.sa_p2mt != entryptr->sa_p2mt); - - if ( level ) - { - ASSERT(!is_epte_superpage(&new) || !p2m_is_foreign(new.sa_p2mt)); - write_atomic(&entryptr->epte, new.epte); - return 0; - } - - if ( unlikely(p2m_is_foreign(new.sa_p2mt)) ) - { - rc = -EINVAL; - if ( !is_epte_present(&new) ) - goto out; - - if ( check_foreign ) - { - struct domain *fdom; - - if ( !mfn_valid(_mfn(new.mfn)) ) - goto out; - - rc = -ESRCH; - fdom = page_get_owner(mfn_to_page(_mfn(new.mfn))); - if ( fdom == NULL ) - goto out; + int rc = p2m_entry_modify(p2m, new.sa_p2mt, entryptr->sa_p2mt, + _mfn(new.mfn), _mfn(entryptr->mfn), level); - /* get refcount on the page */ - rc = -EBUSY; - if ( !get_page(mfn_to_page(_mfn(new.mfn)), fdom) ) - goto out; - } - } - - if ( unlikely(p2m_is_foreign(entryptr->sa_p2mt)) && check_foreign ) - oldmfn = entryptr->mfn; - - p2m_entry_modify(p2m, new.sa_p2mt, entryptr->sa_p2mt, level); + if ( rc ) + return rc; write_atomic(&entryptr->epte, new.epte); - if ( unlikely(oldmfn != mfn_x(INVALID_MFN)) ) - put_page(mfn_to_page(_mfn(oldmfn))); - - rc = 0; - - out: - if ( rc ) - gdprintk(XENLOG_ERR, "epte o:%"PRIx64" n:%"PRIx64" rc:%d\n", - entryptr->epte, new.epte, rc); - return rc; + return 0; } static void ept_p2m_type_to_flags(struct p2m_domain *p2m, ept_entry_t *entry, diff --git a/xen/arch/x86/mm/p2m-pt.c b/xen/arch/x86/mm/p2m-pt.c index 4a531fdf9d..e62bafcfb7 100644 --- a/xen/arch/x86/mm/p2m-pt.c +++ b/xen/arch/x86/mm/p2m-pt.c @@ -574,13 +574,6 @@ p2m_pt_set_entry(struct p2m_domain *p2m, gfn_t gfn_, mfn_t mfn, __trace_var(TRC_MEM_SET_P2M_ENTRY, 0, sizeof(t), &t); } - if ( unlikely(p2m_is_foreign(p2mt)) ) - { - /* hvm fixme: foreign types are only supported on ept at present */ - gdprintk(XENLOG_WARNING, "Unimplemented foreign p2m type.\n"); - return -EINVAL; - } - /* Carry out any eventually pending earlier changes first. */ rc = do_recalc(p2m, gfn); if ( rc < 0 ) diff --git a/xen/arch/x86/mm/shadow/common.c b/xen/arch/x86/mm/shadow/common.c index c818112360..025071a163 100644 --- a/xen/arch/x86/mm/shadow/common.c +++ b/xen/arch/x86/mm/shadow/common.c @@ -3182,6 +3182,7 @@ shadow_write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, unsigned int level) { struct domain *d = p2m->domain; + int rc; paging_lock(d); @@ -3190,8 +3191,14 @@ shadow_write_p2m_entry(struct p2m_domain *p2m, unsigned long gfn, if ( likely(d->arch.paging.shadow.total_pages != 0) ) sh_unshadow_for_p2m_change(d, gfn, p, new, level); - p2m_entry_modify(p2m, p2m_flags_to_type(l1e_get_flags(new)), - p2m_flags_to_type(l1e_get_flags(*p)), level); + rc = p2m_entry_modify(p2m, p2m_flags_to_type(l1e_get_flags(new)), + p2m_flags_to_type(l1e_get_flags(*p)), + l1e_get_mfn(new), l1e_get_mfn(*p), level); + if ( rc ) + { + paging_unlock(d); + return rc; + } /* Update the entry with new content */ safe_write_pte(p, new); diff --git a/xen/include/asm-x86/p2m.h b/xen/include/asm-x86/p2m.h index f4ec2becbd..2801a8ccca 100644 --- a/xen/include/asm-x86/p2m.h +++ b/xen/include/asm-x86/p2m.h @@ -932,11 +932,14 @@ int p2m_set_ioreq_server(struct domain *d, unsigned int flags, struct hvm_ioreq_server *p2m_get_ioreq_server(struct domain *d, unsigned int *flags); -static inline void p2m_entry_modify(struct p2m_domain *p2m, p2m_type_t nt, - p2m_type_t ot, unsigned int level) +static inline int p2m_entry_modify(struct p2m_domain *p2m, p2m_type_t nt, + p2m_type_t ot, mfn_t nfn, mfn_t ofn, + unsigned int level) { - if ( level != 1 || nt == ot ) - return; + BUG_ON(level > 1 && (nt == p2m_ioreq_server || nt == p2m_map_foreign)); + + if ( level != 1 || (nt == ot && mfn_eq(nfn, ofn)) ) + return 0; switch ( nt ) { @@ -948,6 +951,18 @@ static inline void p2m_entry_modify(struct p2m_domain *p2m, p2m_type_t nt, p2m->ioreq.entry_count++; break; + case p2m_map_foreign: + if ( !mfn_valid(nfn) ) + { + ASSERT_UNREACHABLE(); + return -EINVAL; + } + + if ( !page_get_owner_and_reference(mfn_to_page(nfn)) ) + return -EBUSY; + + break; + default: break; } @@ -959,9 +974,20 @@ static inline void p2m_entry_modify(struct p2m_domain *p2m, p2m_type_t nt, p2m->ioreq.entry_count--; break; + case p2m_map_foreign: + if ( !mfn_valid(ofn) ) + { + ASSERT_UNREACHABLE(); + return -EINVAL; + } + put_page(mfn_to_page(ofn)); + break; + default: break; } + + return 0; } #endif /* _XEN_ASM_X86_P2M_H */ -- generated by git-patchbot for /home/xen/git/xen.git#staging --===============2102938460119135871== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============2102938460119135871==-- From xen-changelog-bounces@lists.xenproject.org Thu Feb 28 17:44:51 2019 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 28 Feb 2019 17:44:51 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gzPjn-0008AN-3r; Thu, 28 Feb 2019 17:44:51 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gzPjm-0008AD-85 for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 17:44:50 +0000 X-Inumbo-ID: 8996f548-3b80-11e9-b8f8-93817fdc8ec6 Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 8996f548-3b80-11e9-b8f8-93817fdc8ec6; Thu, 28 Feb 2019 17:44:46 +0000 (UTC) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1gzPji-0005xr-1w for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 17:44:46 +0000 Received: from xen by xenbits.xenproject.org with local (Exim 4.89) (envelope-from ) id 1gzPjh-0005Xb-Vk for xen-changelog@lists.xenproject.org; Thu, 28 Feb 2019 17:44:45 +0000 From: patchbot@xen.org To: xen-changelog@lists.xenproject.org Message-Id: Date: Thu, 28 Feb 2019 17:44:45 +0000 Subject: [Xen-changelog] [xen staging] npt/shadow: allow getting foreign page table entries X-BeenThere: xen-changelog@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Change log for Mercurial \(receive only\)" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Reply-To: xen-devel@lists.xenproject.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============4867303822996938644==" Errors-To: xen-changelog-bounces@lists.xenproject.org Sender: "Xen-changelog" --===============4867303822996938644== Content-Type: text/plain commit b50acc560b09ef7c7274011a95dff7121563f3f2 Author: Roger Pau Monne AuthorDate: Wed Feb 27 12:09:05 2019 +0100 Commit: George Dunlap CommitDate: Thu Feb 28 17:36:43 2019 +0000 npt/shadow: allow getting foreign page table entries Current npt and shadow code to get an entry will always return INVALID_MFN for foreign entries. Allow to return the entry mfn for foreign entries, like it's done for grant table entries. Signed-off-by: Roger Pau Monné Reviewed-by: Jan Beulich Reviewed-by: Wei Liu Acked-by: George Dunlap --- xen/arch/x86/mm/p2m-pt.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/xen/arch/x86/mm/p2m-pt.c b/xen/arch/x86/mm/p2m-pt.c index e62bafcfb7..cafc9f299b 100644 --- a/xen/arch/x86/mm/p2m-pt.c +++ b/xen/arch/x86/mm/p2m-pt.c @@ -903,8 +903,8 @@ pod_retry_l1: *t = p2m_recalc_type(recalc || _needs_recalc(flags), l1t, p2m, gfn); unmap_domain_page(l1e); - ASSERT(mfn_valid(mfn) || !p2m_is_ram(*t) || p2m_is_paging(*t)); - return (p2m_is_valid(*t) || p2m_is_grant(*t)) ? mfn : INVALID_MFN; + ASSERT(mfn_valid(mfn) || !p2m_is_any_ram(*t) || p2m_is_paging(*t)); + return (p2m_is_valid(*t) || p2m_is_any_ram(*t)) ? mfn : INVALID_MFN; } static void p2m_pt_change_entry_type_global(struct p2m_domain *p2m, -- generated by git-patchbot for /home/xen/git/xen.git#staging --===============4867303822996938644== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWNoYW5n ZWxvZyBtYWlsaW5nIGxpc3QKWGVuLWNoYW5nZWxvZ0BsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRw czovL2xpc3RzLnhlbnByb2plY3Qub3JnL3hlbi1jaGFuZ2Vsb2c= --===============4867303822996938644==--