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Re: [Xen-devel] [PATCH] x86/HVM: Merge HVM and PVH hypercall tables

On 12/10/2015 11:53 AM, Boris Ostrovsky wrote:

Especially given that PVH dom0 is not booting for me, as I just found out:

(XEN) d0v0 EPT violation 0x1aa (-w-/r-x) gpa 0x000000c0008116 mfn 0xc0008 type 5
(XEN) d0v0 Walking EPT tables for GFN c0008:
(XEN) d0v0  epte 800000082bf50007
(XEN) d0v0  epte 800000082bf19007
(XEN) d0v0  epte 800000043c6f9007
(XEN) d0v0  epte 80500000c0008805
(XEN) d0v0  --- GLA 0xffffc90020008116
(XEN) domain_crash called from vmx.c:2816
(XEN) Domain 0 (vcpu#0) crashed on cpu#0:
(XEN) ----[ Xen-4.7-unstable  x86_64  debug=y  Tainted:    C ]----
(XEN) CPU:    0
(XEN) RIP:    0010:[<ffffffff816150dc>]
(XEN) RFLAGS: 0000000000010046   CONTEXT: hvm guest (d0v0)
(XEN) rax: 000000000000001d rbx: 0000000000000000 rcx: ffff88014700f9b8 (XEN) rdx: 00000000000000ff rsi: 0000000000000000 rdi: 0000000000000000 (XEN) rbp: ffff88014700fa18 rsp: ffff88014700f9e8 r8: ffff88014700f9c0 (XEN) r9: 000000000000001d r10: ffffffff8189c7f0 r11: 0000000000000000 (XEN) r12: ffffc90020008000 r13: ffffc90020008116 r14: 0000000000000002 (XEN) r15: 000000000000001d cr0: 0000000080050033 cr4: 00000000000406f0
(XEN) cr3: 0000000001c0e000   cr2: 0000000000000000
(XEN) ds: 0000   es: 0000   fs: 0000   gs: 0000   ss: 0000   cs: 0010
(XEN) Guest stack trace from rsp=ffff88014700f9e8:
(XEN)   Fault while accessing guest memory.
(XEN) Hardware Dom0 crashed: rebooting machine in 5 seconds.

We haven't been running regression tests for PVH dom0 so I don't know how long this has been broken.

This is broken by 9256f66c1606 ("x86/PCI: intercept all PV Dom0 MMCFG writes").


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