From xen-users-bounces@lists.xenproject.org Wed Feb 01 02:08:29 2023 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Wed, 01 Feb 2023 02:08:29 +0000 Received: from list by lists.xenproject.org with outflank-mailman.488011.755877 (Exim 4.92) (envelope-from ) id 1pN2XF-0007M8-2H; Wed, 01 Feb 2023 02:07:41 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 488011.755877; Wed, 01 Feb 2023 02:07:41 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pN2XE-0007Lx-TM; Wed, 01 Feb 2023 02:07:40 +0000 Received: by outflank-mailman (input) for mailman id 488011; Wed, 01 Feb 2023 02:07:40 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pN2XE-0007Lr-6A for xen-users@lists.xenproject.org; Wed, 01 Feb 2023 02:07:40 +0000 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by se1-gles-sth1.inumbo.com (Halon) with ESMTPS id 33327f5e-a1d5-11ed-933c-83870f6b2ba8; Wed, 01 Feb 2023 03:07:39 +0100 (CET) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 419B5B81FF1; Wed, 1 Feb 2023 02:07:37 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 332D3C433EF; Wed, 1 Feb 2023 02:07:35 +0000 (UTC) X-BeenThere: xen-users@lists.xenproject.org List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Precedence: list Sender: "Xen-users" X-Inumbo-ID: 33327f5e-a1d5-11ed-933c-83870f6b2ba8 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1675217256; bh=C5Gv5hG+YqgFJCJz4/H21mbWDcVd5OPyV1HO3OsAtsU=; h=Date:From:To:cc:Subject:In-Reply-To:References:From; b=pwvIQh5UbexJNFhNVfVn465EPocqoyf717A187Q8JdBVHUn7LboSzWIxVuu7Ak4yB 0JiYz8hHmMyleTlOu6Zbo1fm/t1hurV/KvM8FDk4Z9WvBNI5rm6UkaGYwOQmrveBut ZNBOZd+mDeSCjZLXkAc9n7tZt5fEqmLmgxErqkmC1v8b1mdC26NaQkTDxr6XDtBFt6 txJE0P9Vv/honRetWb0/PenHQNH88Ff7hBIli6F105futXXK15tSTrn2ML8F1iBmBO Nz2+1gXy8o/NFzv4lJ3249JVlTKN/cVTbLZUf/al8om4MO4/MiZKb47FfY2HbXk2+U iftfywiJ/EWnA== Date: Tue, 31 Jan 2023 18:07:33 -0800 (PST) From: Stefano Stabellini X-X-Sender: sstabellini@ubuntu-linux-20-04-desktop To: =?UTF-8?B?6JSh5Yqb5Yia?= cc: sstabellini , julien , xen-users , "bertrand.marquis" Subject: Re: [Bug] Bring up Dom0 on Arm board In-Reply-To: Message-ID: References: User-Agent: Alpine 2.22 (DEB 394 2020-01-19) MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="8323329-1079367408-1675217255=:132504" This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --8323329-1079367408-1675217255=:132504 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT On Tue, 31 Jan 2023, 蔡力刚 wrote: > Hi, > > > I think we have two problems here. > >  > > One problem, which is a known problem, is that sometimes the kernel can > > make firmware calls (as SMC calls) to initialize a device driver. This > > is what the "forward_smc" suggestion was meant to solve. > >  > > "forward_smc" is an effective workaround, but the proper solution would > > be to write a platform driver like zynqmp_eemi which check which SMC > > calls need to be forwarded and forward only those. > >  > > The second problem is that the kernel is making firmware calls using HVC > > as transport instead of SMC. This is uncommon. That is the reason why > > "forward_smc" didn't work. "forward_smc" only forward SMC calls, not HVC > > calls. > >  > > But if you had a platform driver like zynqmp_eemi, in theory the > > platform_smc() call in vsmccc_handle_call should have worked correctly > > for both SMC and HVC coming from Linux. > >  > > Just to see if we understood the problem correctly, the appended patch > > alone (no need for other changes) should work, if you pass > > forward_firmware=true to the Xen command line. > >  > >  > > diff --git a/xen/arch/arm/vsmc.c b/xen/arch/arm/vsmc.c > > index 7335276f3f..1d11634bff 100644 > > --- a/xen/arch/arm/vsmc.c > > +++ b/xen/arch/arm/vsmc.c > > @@ -8,6 +8,7 @@ > >   > >   > >  #include  > > +#include  > >  #include  > >  #include  > >  #include  > > @@ -26,6 +27,9 @@ > >  /* Number of functions currently supported by Standard Service Service Calls. */ > >  #define SSSC_SMCCC_FUNCTION_COUNT (3 + VPSCI_NR_FUNCS) > >   > > +static bool __read_mostly forward_fw = false; > > +boolean_param("forward_firmware", forward_fw); > > + > >  static bool fill_uid(struct cpu_user_regs *regs, xen_uuid_t uuid) > >  { > >      int n; > > @@ -224,6 +228,27 @@ static bool vsmccc_handle_call(struct cpu_user_regs *regs) > >      const union hsr hsr = { .bits = regs->hsr }; > >      uint32_t funcid = get_user_reg(regs, 0); > >   > > +    if ( forward_fw ) > > +    { > > +        struct arm_smccc_res res; > > + > > +        arm_smccc_1_1_smc(get_user_reg(regs, 0), > > +                          get_user_reg(regs, 1), > > +                          get_user_reg(regs, 2), > > +                          get_user_reg(regs, 3), > > +                          get_user_reg(regs, 4), > > +                          get_user_reg(regs, 5), > > +                          get_user_reg(regs, 6), > > +                          get_user_reg(regs, 7), > > +                          &res); > > + > > +        set_user_reg(regs, 0, res.a0); > > +        set_user_reg(regs, 1, res.a1); > > +        set_user_reg(regs, 2, res.a2); > > +        set_user_reg(regs, 3, res.a3); > > +        return true; > > +    } > > + > > I tried the change above, but still has a fault in kernel, log as below: > The change is to pass all HVC and SMC calls forward to firmware, > but what I have tried successfully is passing all HVC calls and not handling all SMC calls. I think you should try to find out which ones are the HVCs/SMCs that need to be forwarded and which ones that need to be handled as usual. Once you know that, you could write a platform driver like xen/arch/arm/platforms/xilinx-zynqmp.c that handles things appropriately. > I have not idea how to find out 0x1000a0 where comes from, do you have any suggestions? I would look at device tree to see within which range 0x1000a0 falls. > (XEN) d0v0 hsr.ec 0x17 > (XEN) d0v0 do_trap_smc trap.... > (XEN) traps.c:1987:d0v0 HSR=0x92000007 pc=0xffffffc01069b830 gva=0xffffffc0126e30a0 gpa=0x000000001000a0 > [    6.027388] Unhandled fault at 0xffffffc0126e30a0 > [    6.027415] Mem abort info: > [    6.027490]   ESR = 0x96000000 > [    6.027514]   EC = 0x25: DABT (current EL), IL = 32 bits > [    6.027537]   SET = 0, FnV = 0 > [    6.027554]   EA = 0, S1PTW = 0 > [    6.027571] Data abort info: > [    6.027589]   ISV = 0, ISS = 0x00000000 > [    6.027607]   CM = 0, WnR = 0 > [    6.027627] swapper pgtable: 4k pages, 39-bit VAs, pgdp=0000000019484000 > [    6.027652] [ffffffc0126e30a0] pgd=000000013ffff003, p4d=000000013ffff003, pud=000000013ffff003, pmd=0000000101d86003, pte=006800000010 > 0717 > [    6.027714] Internal error: ttbr address size fault: 96000000 [#1] SMP > [    6.027740] Modules linked in: > [    6.027766] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.10.66 #8 > [    6.027790] Hardware name: Rockchip RK3588 EVB7 LP4 V10 Board (DT) > [    6.027819] pstate: 60c00005 (nZCv daif +PAN +UAO -TCO BTYPE=--) > [    6.027850] pc : rockchip_gem_get_ddr_info+0x28/0x40 > [    6.027884] lr : rockchip_gem_get_ddr_info+0x1c/0x40 > [    6.027905] sp : ffffffc011e7bd60 > [    6.027923] x29: ffffffc011e7bd60 x28: 0000000000000000  > [    6.027952] x27: ffffffc011490438 x26: ffffffc0114f1070  > [    6.027981] x25: 0000000000000006 x24: ffffffc0115bf598  > [    6.028010] x23: 0000000000000000 x22: ffffffc011d56a40  > [    6.028039] x21: ffffffc011e34000 x20: 0000000000000000  > [    6.028067] x19: ffffffc011e34c30 x18: 0000000000000000  > [    6.028095] x17: 000000000000000e x16: 0000000000000007  > [    6.028124] x15: 000000000000000a x14: 0000000000000662  > [    6.028152] x13: ffffffffffffffff x12: ffffffffffffffff  > [    6.028181] x11: 0000000000000000 x10: ffffff8102730a1c  > [    6.028209] x9 : ffffffc010b26fe0 x8 : ffffffc011e7bd38  > [    6.028237] x7 : 0000000000000000 x6 : 0000000000000000  > [    6.028266] x5 : 0000000000000000 x4 : 0000000000000000  > [    6.028297] x3 : 0000000000000000 x2 : ffffffc011c99980  > [    6.028326] x1 : ffffffc011c99000 x0 : ffffffc0126e3000  > [    6.028355] Call trace: > [    6.028377]  rockchip_gem_get_ddr_info+0x28/0x40 > [    6.028404]  rockchip_drm_init+0x110/0x114 > [    6.028427]  do_one_initcall+0xa0/0x1e8 > [    6.028450]  kernel_init_freeable+0x2a4/0x2ac > [    6.028475]  kernel_init+0x20/0x11c > [    6.028496]  ret_from_fork+0x10/0x30 > [    6.028516]  > [    6.028516] PC: 0xffffffc01069b730: > [    6.028536] b730  aa0003f3 f9400400 f9402c14 f9412660 97eb302d f9412a60 97f7be94 f9412a60 > [    6.028598] b750  97ec26a5 f9401280 d2800003 f9407662 f940c661 97f81021 a94153f3 a8c27bfd > [    6.028657] b770  d50323bf d65f03c0 aa1e03e9 d503201f d503233f a9bd7bfd d2804c02 910003fd > [    6.028716] b790  f90013f5 aa0003f5 d0006b20 a90153f3 2a0103f4 f945f800 5281b801 97ec22a5 > [    6.028775] b7b0  b4000280 aa0003f3 51000682 32002c42 aa0003e1 11000442 aa1503e0 97ff3263 > [    6.028835] b7d0  f9400a60 52819a41 72a00201 f9401000 f9401800 b9003001 aa1303e0 a94153f3 > [    6.028894] b7f0  f94013f5 a8c37bfd d50323bf d65f03c0 92800173 17fffff9 d503245f aa1e03e9 > [    6.028952] b810  d503201f d503233f a9bf7bfd 910003fd 941230e8 b40000c0 d000afe1 91260022 > [    6.029011] b830  29540003 b9098020 b9000443 a8c17bfd d50323bf d65f03c0 d503245f aa1e03e9 > [    6.029070] b850  d503201f d503233f a9be7bfd aa0103e2 910003fd a90153f3 aa0103f4 aa0003f3 > [    6.029128] b870  f9407401 97ff34bd 35000080 aa1403e1 aa1303e0 97fffda7 a94153f3 a8c27bfd > [    6.029187] b890  d50323bf d65f03c0 d503245f aa1e03e9 d503201f d503233f a9be7bfd 910003fd > [    6.029255] b8b0  f9000bf3 aa0103f3 97ff34ec 350000a0 f9405660 f9004e7f aa1303e1 97fffd95 > [    6.029314] b8d0  f9400bf3 a8c27bfd d50323bf d65f03c0 d503245f aa1e03e9 d503201f d503233f > [    6.029372] b8f0  a9bc7bfd 910003fd a90153f3 2a0303f4 a9025bf5 12001c55 a90363f7 97ffff9b > > --8323329-1079367408-1675217255=:132504-- From xen-users-bounces@lists.xenproject.org Wed Feb 01 08:28:43 2023 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Wed, 01 Feb 2023 08:28:43 +0000 Received: from list by lists.xenproject.org with outflank-mailman.488176.756146 (Exim 4.92) (envelope-from ) id 1pN8T9-00025C-JH; Wed, 01 Feb 2023 08:27:51 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 488176.756146; Wed, 01 Feb 2023 08:27:51 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pN8T9-000254-Fh; Wed, 01 Feb 2023 08:27:51 +0000 Received: by outflank-mailman (input) for mailman id 488176; Wed, 01 Feb 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X-Alimail-AntiSpam:AC=CONTINUE;BC=0.07386725|-1;CH=green;DM=|CONTINUE|false|;DS=CONTINUE|ham_news_journal|0.0142196-0.00686411-0.978916;FP=0|0|0|0|0|-1|-1|-1;HT=ay29a033018047206;MF=cai_ligang@gmechina.com.cn;NM=1;PH=DW;RN=4;RT=4;SR=0;TI=W4_0.1.41_DEFAULT_210DE904_1675240060100_o7001c260r; Date: Wed, 01 Feb 2023 16:27:40 +0800 From: "=?UTF-8?B?6JSh5Yqb5Yia?=" To: "sstabellini" , "julien" , "xen-users" Cc: "bertrand.marquis" Reply-To: "=?UTF-8?B?6JSh5Yqb5Yia?=" Message-ID: Subject: =?UTF-8?B?UmU6IFtCdWddIEJyaW5nIHVwIERvbTAgb24gQXJtIGJvYXJk?= X-Mailer: [Alimail-Mailagent][W4_0.1.41][DEFAULT][Chrome] MIME-Version: 1.0 x-aliyun-mail-creator: W4_0.1.41_DEFAULT_M3LTW96aWxsYS81LjAgKFdpbmRvd3MgTlQgMTAuMDsgV2luNjQ7IHg2NCkgQXBwbGVXZWJLaXQvNTM3LjM2IChLSFRNTCwgbGlrZSBHZWNrbykgQ2hyb21lLzEwOS4wLjAuMCBTYWZhcmkvNTM3LjM2vN Content-Type: multipart/alternative; boundary="----=ALIBOUNDARY_117369_7fd30ca79700_63da227c_16ca881" ------=ALIBOUNDARY_117369_7fd30ca79700_63da227c_16ca881 Content-Type: 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Adk2VzEVCvlgMc4EQ9qPdv3BpyxRww== Date: Wed, 1 Feb 2023 16:27:46 +0000 Message-ID: Accept-Language: en-US, de-DE Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [172.16.0.71] Content-Type: multipart/alternative; boundary="_000_f2dee99949584b8aa8867c37268386f3emifraunhoferde_" MIME-Version: 1.0 --_000_f2dee99949584b8aa8867c37268386f3emifraunhoferde_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable I will give more information about my problem when trying to passthrough gp= io. On the Dom0 device tree I have added xen,passthrough to gpio@ff0a0000: gpio { compatible =3D "xlnx,zynqmp-gpio-modepin"; gpio-controller; #gpio-cells =3D <0x02>; phandle =3D <0x20>; }; gpio@ff0a0000 { #gpio-cells =3D < 0x02 >; #interrupt-cells =3D < 0x02 >; clocks =3D < 0x03 0x1f >; compatible =3D "xlnx,zynqmp-gpio-1.0"; emio-gpio-width =3D < 0x20 >; gpio-controller; gpio-mask-high =3D < 0x00 >; gpio-mask-low =3D < 0x5600 >; interrupt-controller; interrupt-parent =3D < 0x04 >; interrupts =3D < 0x00 0x10 0x04 >; phandle =3D < 0x14 >; power-domains =3D < 0x0c 0x2e >; reg =3D < 0x00 0xff0a0000 0x00 0x1000 >; status =3D "okay"; xen,passthrough; }; Then on the domU config file I put the following: name =3D "guest" # Rootfs and Image kernel =3D "Image" ramdisk =3D "rootfs.cpio.gz" extra =3D "console=3Dhvc0 rdinit=3D/sbin/init root=3D/dev/ram0" memory =3D 800 vcpus =3D 1 vif=3D[ 'bridge=3Dxenbr0' ] dtdev =3D [ '/axi/gpio@ff0a0000' ] # but I don't know if it = should be "/proc/device-tree/axi/gpio@ff0a0000" or if I should put this at = all since I already put xen, passthrough before device_tree =3D "partial_device_tree.dtb" And the partial device_tree.dtb: /dts-v1/; / { /* #*cells are here to keep DTC happy */ #address-cells =3D <2>; #size-cells =3D <2>; passthrough { compatible =3D "simple-bus"; ranges; #address-cells =3D <2>; #size-cells =3D <2>; gpio@ff0a0000 { #gpio-cells =3D < 0x02 >; #interrupt-cells =3D < 0x02 >; clocks =3D < 0x03 0x1f >; compatible =3D "xlnx,zynqmp-gp= io-1.0"; emio-gpio-width =3D < 0x20 >; gpio-controller; gpio-mask-high =3D < 0x00 >; gpio-mask-low =3D < 0x5600 >; interrupt-controller; interrupt-parent =3D < 0x04 >; interrupts =3D < 0x00 0x10 0x0= 4 >; phandle =3D < 0x14 >; power-domains =3D < 0x0c 0x2e = >; reg =3D < 0x00 0xff0a0000 0x00= 0x1000 >; status =3D "okay"; }; }; }; And when running "xl create -c guest.cfg" I get the following: Parsing config from guest.cfg libxl: error: libxl_create.c:1870:libxl__add_dtdevs: Domain 22:xc_assign_dt= device failed: -1 libxl: error: libxl_create.c:1934:domcreate_attach_devices: Domain 22:unabl= e to add none devices libxl: error: libxl_domain.c:1183:libxl__destroy_domid: Domain 22:Non-exist= ant domain libxl: error: libxl_domain.c:1137:domain_destroy_callback: Domain 22:Unable= to destroy guest libxl: error: libxl_domain.c:1064:domain_destroy_cb: Domain 22:Destruction = of domain failed (XEN) XEN_DOMCTL_assign_dt_device: assign "/axi/gpio@ff0a0000" to dom22 fai= led (-22) Since this error appears, if I take out the dtdev option in the guest.cfg f= ile, then DomU boots and when I am in DomU, if I run the following, I get: root@zcu104:~# ls /sys/class/gpio/ export gpiochip508 unexport root@zcu104:~# ls -l /sys/class/gpio/gpiochip508 lrwxrwxrwx 1 root root 0 Feb 1 16:18 /sys/class/gpio/gp= iochip508 -> ../../devices/platform/passthrough/passthrough:gpio/gpio/gpioc= hip508 root@zcu104:~# echo 416 > /sys/class/gpio/export [ 115.482333] export_store: invalid GPIO 416 -sh: echo: write error: Invalid argument So I am not able to access pin 416, that I was able to access without the p= assthrough. Hope someone can help me. >>Hello, >> >>I have problems on implementing passthrough of devices in the ZCU104. I h= ave tried to passthrough a gpio by configuring the device tree in dom0, or = changing what is in the domU config file at the moment of creation. Can som= eone >>tell me what should I change in the device tree, what to add in the = config file etc to be able to passthrough two gpios (for example 416 and 41= 7) to my Linux domU? An example on how to do this would be really really he= lpful >>For my domU I have an "Image" and a "rootfs.cpio.gz" that I created with = Yocto. If more information is needed please let me know. >> >>Regards, >>Maria --_000_f2dee99949584b8aa8867c37268386f3emifraunhoferde_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

I will give more information about my problem when t= rying to passthrough gpio.

 

On the Dom0 device tree I have added xen,passthrough= to gpio@ff0a0000:

        &nbs= p;      gpio {

        &nbs= p;            &= nbsp;        compatible =3D "xlnx,z= ynqmp-gpio-modepin";

        &nbs= p;             =         gpio-controller;

        &nbs= p;             =         #gpio-cells =3D <0x02>;

        &nbs= p;             =         phandle =3D <0x20>;

        &nbs= p;            &= nbsp;           &nbs= p;           };

 

gpio@ff0a0000 {

    = ;           #gpio-cells = =3D < 0x02 >;

    = ;           #interrupt-ce= lls =3D < 0x02 >;

    = ;           clocks =3D &l= t; 0x03 0x1f >;

    = ;           compatible = =3D "xlnx,zynqmp-gpio-1.0";

    = ;           emio-gpio-wid= th =3D < 0x20 >;

    = ;           gpio-controll= er;

    = ;           gpio-mask-hig= h =3D < 0x00 >;

    = ;           gpio-mask-low= =3D < 0x5600 >;

    = ;           interrupt-con= troller;

    = ;           interrupt-par= ent =3D < 0x04 >;

    = ;           interrupts = =3D < 0x00 0x10 0x04 >;

    = ;           phandle =3D &= lt; 0x14 >;

    = ;           power-domains= =3D < 0x0c 0x2e >;

    = ;           reg =3D < = 0x00 0xff0a0000 0x00 0x1000 >;

    = ;           status =3D &q= uot;okay";

    = ;           xen,passthrou= gh;

};

 

Then on the domU config file I put the following:

name =3D "guest&qu= ot;

# Rootfs and Image=

kerne= l =3D "Image"

ramdi= sk =3D "rootfs.cpio.gz"

extra =3D "console= =3Dhvc0 rdinit=3D/sbin/init root=3D/dev/ram0"

memory =3D 800

vcpus =3D 1<= /p>

vif=3D[ 'bridge=3Dxenbr= 0' ]

=  

dtdev =3D [ '/axi/gpio@= ff0a0000' ]           &nb= sp;    # but I don’t know if it should be “/proc= /device-tree/axi/gpio@ff0a0000” or if I should put this at all since = I already put xen, passthrough before

device_tree =3D "p= artial_device_tree.dtb"

 

And the partial device_tree.dtb:

/dts-v1/;

/ {

    /* #= *cells are here to keep DTC happy */

    #add= ress-cells =3D <2>;

    #siz= e-cells =3D <2>;

 

    pass= through {

    = ;    compatible =3D "simple-bus";

    = ;    ranges;

    = ;    #address-cells =3D <2>;

    = ;    #size-cells =3D <2>;

    = ;    gpio@ff0a0000 {

    = ;            &n= bsp;            = ;            &n= bsp;   #gpio-cells =3D < 0x02 >;

    = ;            &n= bsp;            = ;            &n= bsp;   #interrupt-cells =3D < 0x02 >;

    = ;            &n= bsp;            = ;            &n= bsp;   clocks =3D < 0x03 0x1f >;

    = ;            &n= bsp;            = ;            &n= bsp;   compatible =3D "xlnx,zynqmp-gpio-1.0";

    = ;            &n= bsp;            = ;            &n= bsp;   emio-gpio-width =3D < 0x20 >;

    = ;            &n= bsp;            = ;            &n= bsp;   gpio-controller;

    = ;            &n= bsp;            = ;            &n= bsp;   gpio-mask-high =3D < 0x00 >;

    = ;            &n= bsp;            = ;            &n= bsp;   gpio-mask-low =3D < 0x5600 >;

    = ;            &n= bsp;            = ;            &n= bsp;   interrupt-controller;

    = ;            &n= bsp;            = ;            &n= bsp;   interrupt-parent =3D < 0x04 >;

    = ;            &n= bsp;            = ;            &n= bsp;   interrupts =3D < 0x00 0x10 0x04 >;

    = ;            &n= bsp;            = ;            &n= bsp;   phandle =3D < 0x14 >;

    = ;            &n= bsp;            = ;            &n= bsp;   power-domains =3D < 0x0c 0x2e >;

    = ;            &n= bsp;            = ;            &n= bsp;   reg =3D < 0x00 0xff0a0000 0x00 0x1000 >;<= /p>

    = ;            &n= bsp;            = ;            &n= bsp;   status =3D "okay";

    = ;            &n= bsp;            = ; };

    };

};

And when running “xl create -c guest.cfg”= ; I get the following:

Parsing config from guest.cfg

libxl: error: libxl_create.c:1870:libxl__add_dtdevs:= Domain 22:xc_assign_dtdevice failed: -1

libxl: error: libxl_create.c:1934:domcreate_attach_d= evices: Domain 22:unable to add none devices

libxl: error: libxl_domain.c:1183:libxl__destroy_dom= id: Domain 22:Non-existant domain

libxl: error: libxl_domain.c:1137:domain_destroy_cal= lback: Domain 22:Unable to destroy guest

libxl: error: libxl_domain.c:1064:domain_destroy_cb:= Domain 22:Destruction of domain failed

(XEN) XEN_DOMCTL_assign_dt_device: assign "/axi= /gpio@ff0a0000" to dom22 failed (-22)

 

Since this error appears, if I take out the dtdev op= tion in the guest.cfg file, then DomU boots and when I am in DomU, if I run= the following, I get:

root@zcu104:~# ls /sys/= class/gpio/

export   = ;    gpiochip508  unexport

root@zcu104:~# ls -l /s= ys/class/gpio/gpiochip508

lrwxrwxrwx  &= nbsp; 1 root     root     &nbs= p;       0 Feb  1 16:18 /sys/class/gpio/= gpiochip508 -> ../../devices/platform/passthrough/passthrough:gpio/gpio/= gpiochip508

root@zcu104:~# echo 416= > /sys/class/gpio/export

[  115.482333] exp= ort_store: invalid GPIO 416

-sh: echo: write error:= Invalid argument

 

So I am not able to access pin 416, that I was able = to access without the passthrough. Hope someone can help me.

 

>>Hello,

>> 

>>I have problems on implementing passthrough = of devices in the ZCU104. I have tried to passthrough a gpio by configuring= the device tree in dom0, or changing what is in the domU config file at th= e moment of creation. Can someone >>tell me what should I change in the device tree, what to add in the config file= etc to be able to passthrough two gpios (for example 416 and 417) to my Li= nux domU? An example on how to do this would be really really helpful<= /o:p>

>>For my domU I have an “Image” an= d a “rootfs.cpio.gz” that I created with Yocto. If more informa= tion is needed please let me know.

>> 

>>Regards,

>>Maria

--_000_f2dee99949584b8aa8867c37268386f3emifraunhoferde_-- From xen-users-bounces@lists.xenproject.org Wed Feb 01 21:41:49 2023 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Wed, 01 Feb 2023 21:41:49 +0000 Received: from list by lists.xenproject.org with outflank-mailman.488437.756532 (Exim 4.92) (envelope-from ) id 1pNKqh-0006HW-VI; Wed, 01 Feb 2023 21:40:59 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 488437.756532; Wed, 01 Feb 2023 21:40:59 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pNKqh-0006HL-RR; Wed, 01 Feb 2023 21:40:59 +0000 Received: by outflank-mailman (input) for mailman id 488437; Wed, 01 Feb 2023 21:40:58 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pNKqg-0006HF-EJ for xen-users@lists.xenproject.org; Wed, 01 Feb 2023 21:40:58 +0000 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id 1a595dc7-a279-11ed-b63b-5f92e7d2e73a; Wed, 01 Feb 2023 22:40:55 +0100 (CET) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 297E7617B9; Wed, 1 Feb 2023 21:40:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C9CF8C433EF; Wed, 1 Feb 2023 21:40:51 +0000 (UTC) X-BeenThere: xen-users@lists.xenproject.org List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Precedence: list Sender: "Xen-users" X-Inumbo-ID: 1a595dc7-a279-11ed-b63b-5f92e7d2e73a DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1675287652; bh=STe+ABeIxRkB+OE6YkrnjwVlws1hp1o0kFZSoPJbWiQ=; h=Date:From:To:cc:Subject:In-Reply-To:References:From; b=o24f8pTA0uKHPUyq2ZfVTwscgJN30FtV1gzuNMuh09runMh611HDY9IbVMpFii+KU b6wuij7YNhDSD9KzufA5hF7DwgX6gwzfnGfJ64KkJlGDKhlSRRdY09RhpzpmpPPFdx agDHiW4vEpAXfHa1wjW4HRqGuIiCsHxs5rSfVzdzkxGY22upZGUG/vzIg2Wb7l6pk0 v0vmPML5sHwqvVbJu1afyIqcoFFHTRm9IXTB/YlvX7N779N1BqF6i+Grc6X2KtS+3f fvXnzVeFZLk0KSX3QzMwkq69NHTBrT8+wpgBVAz4BJJuXieDW8tqNxJKrUL8ekWLmg QXZlenN9VlxYw== Date: Wed, 1 Feb 2023 13:40:50 -0800 (PST) From: Stefano Stabellini X-X-Sender: sstabellini@ubuntu-linux-20-04-desktop To: =?UTF-8?B?6JSh5Yqb5Yia?= cc: sstabellini , julien , xen-users , "bertrand.marquis" Subject: Re: [Bug] Bring up Dom0 on Arm board In-Reply-To: Message-ID: References: User-Agent: Alpine 2.22 (DEB 394 2020-01-19) MIME-Version: 1.0 Content-Type: multipart/mixed; BOUNDARY="8323329-1164773426-1675287355=:132504" Content-ID: This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --8323329-1164773426-1675287355=:132504 Content-Type: text/plain; CHARSET=UTF-8 Content-Transfer-Encoding: 8BIT Content-ID: On Wed, 1 Feb 2023, 蔡力刚 wrote: > >> > I think we have two problems here. > >> >  > >> > One problem, which is a known problem, is that sometimes the kernel can > >> > make firmware calls (as SMC calls) to initialize a device driver. This > >> > is what the "forward_smc" suggestion was meant to solve. > >> >  > >> > "forward_smc" is an effective workaround, but the proper solution would > >> > be to write a platform driver like zynqmp_eemi which check which SMC > >> > calls need to be forwarded and forward only those. > >> >  > >> > The second problem is that the kernel is making firmware calls using HVC > >> > as transport instead of SMC. This is uncommon. That is the reason why > >> > "forward_smc" didn't work. "forward_smc" only forward SMC calls, not HVC > >> > calls. > >> >  > >> > But if you had a platform driver like zynqmp_eemi, in theory the > >> > platform_smc() call in vsmccc_handle_call should have worked correctly > >> > for both SMC and HVC coming from Linux. > >> >  > >> > Just to see if we understood the problem correctly, the appended patch > >> > alone (no need for other changes) should work, if you pass > >> > forward_firmware=true to the Xen command line. > >> >  > >> >  > >> > diff --git a/xen/arch/arm/vsmc.c b/xen/arch/arm/vsmc.c > >> > index 7335276f3f..1d11634bff 100644 > >> > --- a/xen/arch/arm/vsmc.c > >> > +++ b/xen/arch/arm/vsmc.c > >> > @@ -8,6 +8,7 @@ > >> >   > >> >   > >> >  #include  > >> > +#include  > >> >  #include  > >> >  #include  > >> >  #include  > >> > @@ -26,6 +27,9 @@ > >> >  /* Number of functions currently supported by Standard Service Service Calls. */ > >> >  #define SSSC_SMCCC_FUNCTION_COUNT (3 + VPSCI_NR_FUNCS) > >> >   > >> > +static bool __read_mostly forward_fw = false; > >> > +boolean_param("forward_firmware", forward_fw); > >> > + > >> >  static bool fill_uid(struct cpu_user_regs *regs, xen_uuid_t uuid) > >> >  { > >> >      int n; > >> > @@ -224,6 +228,27 @@ static bool vsmccc_handle_call(struct cpu_user_regs *regs) > >> >      const union hsr hsr = { .bits = regs->hsr }; > >> >      uint32_t funcid = get_user_reg(regs, 0); > >> >   > >> > +    if ( forward_fw ) > >> > +    { > >> > +        struct arm_smccc_res res; > >> > + > >> > +        arm_smccc_1_1_smc(get_user_reg(regs, 0), > >> > +                          get_user_reg(regs, 1), > >> > +                          get_user_reg(regs, 2), > >> > +                          get_user_reg(regs, 3), > >> > +                          get_user_reg(regs, 4), > >> > +                          get_user_reg(regs, 5), > >> > +                          get_user_reg(regs, 6), > >> > +                          get_user_reg(regs, 7), > >> > +                          &res); > >> > + > >> > +        set_user_reg(regs, 0, res.a0); > >> > +        set_user_reg(regs, 1, res.a1); > >> > +        set_user_reg(regs, 2, res.a2); > >> > +        set_user_reg(regs, 3, res.a3); > >> > +        return true; > >> > +    } > >> > + > >>  > >> I tried the change above, but still has a fault in kernel, log as below: > >> The change is to pass all HVC and SMC calls forward to firmware, > >> but what I have tried successfully is passing all HVC calls and not handling all SMC calls. > >  > > I think you should try to find out which ones are the HVCs/SMCs that > > need to be forwarded and which ones that need to be handled as usual. > >  > > Once you know that, you could write a platform driver like > > xen/arch/arm/platforms/xilinx-zynqmp.c that handles things > > appropriately. > >  > >  > > > I have not idea how to find out 0x1000a0 where comes from, do you have any suggestions? > >  > > I would look at device tree to see within which range 0x1000a0 falls. > > What I'm confused about is what's the difference between HVC/SMC calls  > through xen forward to firmware and kernel HVC/SMC calls direct to firmware? > If it's the same, then there should be no fault. In theory with the last patch I sent you there should be no difference between the HVC/SMC calls direct to firmware and the ones forwarded to firmware by Xen. One thing you could try is to print out all the SMC/HVC calls that are done on native and compared them against the ones done on Xen to see if they match. One difference however is memory mapping. If something like address 0x1000a0 is nomapped in the guest, then a failure is expected, > I search the dtb and found a device may be related to 0x1000a0, content as below: > > sram@10f000 { >     compatible = "mmio-sram"; >     reg = <0x00 0x10f000 0x00 0x100>; >     #address-cells = <0x01>; >     #size-cells = <0x01>; >     ranges = <0x00 0x00 0x10f000 0x100>; > >     sram@0 { >         compatible = "arm,scmi-shmem"; >         reg = <0x00 0x100>; >         phandle = <0x38>; >     }; > }; What is the #address-cells and #size-cells of the parent node? If it is #address-cells = 2 and #size-cells = 2, then this region is 0x10f000-0x110000. We need the region just before it. It is possible that it exists but it is not described in device tree. In that case it is normal to get an error when trying to access it. --8323329-1164773426-1675287355=:132504-- From xen-users-bounces@lists.xenproject.org Mon Feb 06 08:51:01 2023 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Mon, 06 Feb 2023 08:51:01 +0000 Received: from list by lists.xenproject.org with outflank-mailman.490026.758627 (Exim 4.92) (envelope-from ) id 1pOxC8-0005gE-5U; Mon, 06 Feb 2023 08:49:48 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 490026.758627; Mon, 06 Feb 2023 08:49:48 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pOxC8-0005g6-1T; Mon, 06 Feb 2023 08:49:48 +0000 Received: by outflank-mailman (input) for mailman id 490026; Mon, 06 Feb 2023 08:49:46 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by 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bh=u/hxQ5bRqCUAQ+3mLrJ4+Y0EW8DHRqp3k9cI08p6Gf0=; b=Qs2vNm+DTruPOiW2juXOaNla8aycdfpG+NwQtKyFEFlHUK0lQ3oSnw5UvonmeYTQmS dJlhlUSGHIAUfNULYjOMwxV4GeuaG+ca1Ipu+4qJjvfft3/eUUH2wuDevEUB0G8wwYDf xbEvrFJVev9azvKeE4a8Dp9Cp9DKV/Lqp7gAXigrCvN/jKBswdb0Hu6I50XUe/LkSwhQ al521bVgUZH0fhtEQyiJr7NzJOyUaX22lH5OSXKjE/GO8lwMNmpfVqL13C0ezIs7cV49 mwq1yXUZZu8Zh7zU0sU99CfDN1nY01EVhldL8bzQF8w7YJRVikRgNNI2Wy3oGWvkh3+w dn0w== X-RZG-AUTH: ":PG0ReWCndfO3rCSML4AvNaDxJ7WJyilEI/NMX3IPsStZLbcZC9mNZx0oO9uVFQeS3s1LjmLRPhodyX90+y/7AtqkEA7/zZfur8PfNEE2tw==" X-Virus-Scanned: Debian amavisd-new at onlineschubla.de From: "Paul Leiber" In-Reply-To: <8d04ba98-6246-4030-9573-0951f97d0d6c.cai_ligang@gmechina.com.cn> Content-Type: multipart/mixed; boundary="----=_=-_OpenGroupware_org_NGMime-690-1675674582.211423-0------" References: <8d04ba98-6246-4030-9573-0951f97d0d6c.cai_ligang@gmechina.com.cn> Date: Mon, 06 Feb 2023 09:09:41 +0000 To: "xen-users" Message-ID: MIME-Version: 1.0 Subject: Re: [Bug] Error when running network-attach Content-Transfer-Encoding: 7bit ------=_=-_OpenGroupware_org_NGMime-690-1675674582.211423-0------ Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Content-Length: 7038 Hi,=C2=A0 you probably need to set up the bridge xenbr0 (default name) manually i= n Dom0. Please have a look at https://xenbits.xen.org/docs/unstable/man/xl-network-configuration.5.ht= ml#bridge and https://wiki.xenproject.org/wiki/Network=5FConfiguration=5FExamples=5F(= Xen=5F4.1%2B)=C2=A0 There seem to be other errors in your log which I can't diagnose. Paul =C2=A0 =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F= =5F=5F=5F=5F=5F=5F=5F=5F Von: =E8=94=A1=E5=8A=9B=E5=88=9A Gesendet: Montag, 6. Februar 2023 09:53 An: xen-users Betreff: [Bug] Error when running network-attach=20 Hi, When I try to add a network with xl network-attach command, the log show some errors: root@RK3588:/mnt#=C2=A0xl=C2=A0network-attach=C2=A00 libxl:=C2=A0error:=C2=A0libxl=5Fxshelp.c:201:libxl=5F=5Fxs=5Fread=5Fman= datory:=C2=A0xenstore=C2=A0read=C2=A0failed:=C2=A0`/libxl/0/type':=C2=A0= No=C2=A0such=C2=A0file=C2=A0or=C2=A0directory libxl:=C2=A0warning:=C2=A0libxl=5Fdom.c:52:libxl=5F=5Fdomain=5Ftype:=C2= =A0unable=C2=A0to=C2=A0get=C2=A0domain=C2=A0type=C2=A0for=C2=A0domid=3D= 0,=C2=A0assuming=C2=A0HVM [=C2=A0=C2=A0=C2=A050.081420]=C2=A0rockchip-thermal=C2=A0fec00000.tsadc= :=C2=A0Missing=C2=A0rockchip,grf=C2=A0property [=C2=A0=C2=A0=C2=A050.081631]=C2=A0rockchip-thermal=C2=A0fec00000.tsadc= :=C2=A0failed=C2=A0to=C2=A0register=C2=A0sensor=C2=A00:=C2=A0-517 [=C2=A0=C2=A0=C2=A050.081667]=C2=A0rockchip-thermal=C2=A0fec00000.tsadc= :=C2=A0failed=C2=A0to=C2=A0register=C2=A0sensor[0]=C2=A0:=C2=A0error=C2= =A0=3D=C2=A0-517 [=C2=A0=C2=A0=C2=A050.104335]=C2=A0rockchip-thermal=C2=A0fec00000.tsadc= :=C2=A0Missing=C2=A0rockchip,grf=C2=A0property [=C2=A0=C2=A0=C2=A050.104507]=C2=A0rockchip-thermal=C2=A0fec00000.tsadc= :=C2=A0failed=C2=A0to=C2=A0register=C2=A0sensor=C2=A00:=C2=A0-517 [=C2=A0=C2=A0=C2=A050.104544]=C2=A0rockchip-thermal=C2=A0fec00000.tsadc= :=C2=A0failed=C2=A0to=C2=A0register=C2=A0sensor[0]=C2=A0:=C2=A0error=C2= =A0=3D=C2=A0-517 (XEN)=C2=A0grant=5Ftable.c:1869:d0v1=C2=A0Expanding=C2=A0d0=C2=A0grant=C2= =A0table=C2=A0from=C2=A01=C2=A0to=C2=A02=C2=A0frames (XEN)=C2=A0grant=5Ftable.c:1869:d0v1=C2=A0Expanding=C2=A0d0=C2=A0grant=C2= =A0table=C2=A0from=C2=A02=C2=A0to=C2=A03=C2=A0frames (XEN)=C2=A0grant=5Ftable.c:1869:d0v1=C2=A0Expanding=C2=A0d0=C2=A0grant=C2= =A0table=C2=A0from=C2=A03=C2=A0to=C2=A04=C2=A0frames (XEN)=C2=A0grant=5Ftable.c:1869:d0v1=C2=A0Expanding=C2=A0d0=C2=A0grant=C2= =A0table=C2=A0from=C2=A04=C2=A0to=C2=A05=C2=A0frames [=C2=A0=C2=A0=C2=A050.155613]=C2=A0xen=5Fnetfront:=C2=A0backend=C2=A0su= pports=C2=A0XDP=C2=A0headroom [=C2=A0=C2=A0=C2=A050.189706]=C2=A0vif=C2=A0vif-0-0=C2=A0vif0.0:=C2=A0G= uest=C2=A0Rx=C2=A0ready libxl:=C2=A0error:=C2=A0libxl=5Fexec.c:117:libxl=5Freport=5Fchild=5Fexi= tstatus:=C2=A0/etc/xen/scripts/vif-bridge=C2=A0online=C2=A0[1044]=C2=A0= exited=C2=A0with=C2=A0error=C2=A0status=C2=A01 libxl:=C2=A0error:=C2=A0libxl=5Fdevice.c:1259:device=5Fhotplug=5Fchild=5F= death=5Fcb:=C2=A0script:=C2=A0Could=C2=A0not=C2=A0find=C2=A0bridge=C2=A0= device=C2=A0xenbr0 libxl:=C2=A0error:=C2=A0libxl=5Fdevice.c:1402:device=5Faddrm=5Faocomple= te:=C2=A0Unable=C2=A0to=C2=A0add=C2=A0vif=C2=A0with=C2=A0id=C2=A00 libxl=5Fdevice=5Fnic=5Fadd=C2=A0failed. root@RK3588:/mnt#=C2=A0(XEN)=C2=A0gnttab=5Fmark=5Fdirty=C2=A0not=C2=A0i= mplemented=C2=A0yet what does vif-bridge exited with error status 1 mean? "Could=C2=A0not=C2=A0find=C2=A0bridge=C2=A0device=C2=A0xenbr0", is that= means I have to create a xenbr0?How to create? I create a domu with the config below: kernel=C2=A0=3D=C2=A0"/media/sdcard0/domu-Image" memory=C2=A0=3D=C2=A01024 name=C2=A0=3D=C2=A0"guest1" vcpus=C2=A0=3D=C2=A02 serial=3D"pty" vif=C2=A0=3D=C2=A0[''] disk=C2=A0=3D=C2=A0[=C2=A0'phy:/dev/mmcblk2p2,xvda,w'=C2=A0] extra=C2=A0=3D=C2=A0'console=3Dhvc0=C2=A0root=3D/dev/xvda=C2=A0rw=C2=A0= clk=5Fignore=5Funused' There also has the same error log above, and domu bring up failed. If delete vif option. domu can bring up. and using network-attach creat= e a network. The network can work, dom0 and domu can ping each other successfully. But the network type seems is NAT, How can I set up a bridged=C2=A0netw= orking ? Best regards Cailigang =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F= =5F=5F=5F=5F=5F=5F=5F=5F Von: =E8=94=A1=E5=8A=9B=E5=88=9A Gesendet: Montag, 6. Februar 2023 09:53 An: xen-users Betreff: [Bug] Error when running network-attach=20 Hi, When I try to add a network with xl network-attach command, the log show some errors: root@RK3588:/mnt# xl network-attach 0 libxl: error: libxl=5Fxshelp.c:201:libxl=5F=5Fxs=5Fread=5Fmandatory: xe= nstore read failed: `/libxl/0/type': No such file or directory libxl: warning: libxl=5Fdom.c:52:libxl=5F=5Fdomain=5Ftype: unable to ge= t domain type for domid=3D0, assuming HVM [ 50.081420] rockchip-thermal fec00000.tsadc: Missing rockchip,grf prop= erty [ 50.081631] rockchip-thermal fec00000.tsadc: failed to register sensor= 0: -517 [ 50.081667] rockchip-thermal fec00000.tsadc: failed to register sensor= [0] : error =3D -517 [ 50.104335] rockchip-thermal fec00000.tsadc: Missing rockchip,grf prop= erty [ 50.104507] rockchip-thermal fec00000.tsadc: failed to register sensor= 0: -517 [ 50.104544] rockchip-thermal fec00000.tsadc: failed to register sensor= [0] : error =3D -517 (XEN) grant=5Ftable.c:1869:d0v1 Expanding d0 grant table from 1 to 2 fr= ames (XEN) grant=5Ftable.c:1869:d0v1 Expanding d0 grant table from 2 to 3 fr= ames (XEN) grant=5Ftable.c:1869:d0v1 Expanding d0 grant table from 3 to 4 fr= ames (XEN) grant=5Ftable.c:1869:d0v1 Expanding d0 grant table from 4 to 5 fr= ames [ 50.155613] xen=5Fnetfront: backend supports XDP headroom [ 50.189706] vif vif-0-0 vif0.0: Guest Rx ready libxl: error: libxl=5Fexec.c:117:libxl=5Freport=5Fchild=5Fexitstatus: /= etc/xen/scripts/vif-bridge online [1044] exited with error status 1 libxl: error: libxl=5Fdevice.c:1259:device=5Fhotplug=5Fchild=5Fdeath=5F= cb: script: Could not find bridge device xenbr0 libxl: error: libxl=5Fdevice.c:1402:device=5Faddrm=5Faocomplete: Unable= to add vif with id 0 libxl=5Fdevice=5Fnic=5Fadd failed. root@RK3588:/mnt# (XEN) gnttab=5Fmark=5Fdirty not implemented yet what does vif-bridge exited with error status 1 mean? "Could not find bridge device xenbr0", is that means I have to create a= xenbr0?How to create? I create a domu with the config below: kernel =3D "/media/sdcard0/domu-Image" memory =3D 1024 name =3D "guest1" vcpus =3D 2 serial=3D"pty" vif =3D [''] disk =3D [ 'phy:/dev/mmcblk2p2,xvda,w' ] extra =3D 'console=3Dhvc0 root=3D/dev/xvda rw clk=5Fignore=5Funused' There also has the same error log above, and domu bring up failed. If delete vif option. domu can bring up. and using network-attach creat= e a network. The network can work, dom0 and domu can ping each other successfully. But the network type seems is NAT, How can I set up a bridged networkin= g ? Best regards Cailigang ------=_=-_OpenGroupware_org_NGMime-690-1675674582.211423-0-------- From xen-users-bounces@lists.xenproject.org Thu Feb 09 06:37:00 2023 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 09 Feb 2023 06:37:00 +0000 Received: from list by lists.xenproject.org with outflank-mailman.492159.761590 (Exim 4.92) (envelope-from ) id 1pQ0XK-0006JM-TW; Thu, 09 Feb 2023 06:36:02 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 492159.761590; Thu, 09 Feb 2023 06:36:02 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pQ0XK-0006JB-Oq; Thu, 09 Feb 2023 06:36:02 +0000 Received: by outflank-mailman (input) for mailman id 492159; Thu, 09 Feb 2023 06:36:02 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pQ0XJ-0006J5-Un for xen-users@lists.xenproject.org; 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Date: Fri, 10 Feb 2023 14:45:07 +0800 From: "=?UTF-8?B?6JSh5Yqb5Yia?=" To: "xen-users" Reply-To: "=?UTF-8?B?6JSh5Yqb5Yia?=" Message-ID: <1955a2ea-6de4-4491-bc0f-0929b6ab23c6.cai_ligang@gmechina.com.cn> Subject: =?UTF-8?B?W1hlbi11c2Vyc10gWGVuIEFSTSBwYXNzdGhyb3VnaCBldGhlcm5ldCB0byBEb211?= X-Mailer: [Alimail-Mailagent][W4_0.1.41][DEFAULT][Chrome] MIME-Version: 1.0 x-aliyun-mail-creator: W4_0.1.41_DEFAULT_M3LTW96aWxsYS81LjAgKFdpbmRvd3MgTlQgMTAuMDsgV2luNjQ7IHg2NCkgQXBwbGVXZWJLaXQvNTM3LjM2IChLSFRNTCwgbGlrZSBHZWNrbykgQ2hyb21lLzEwOS4wLjAuMCBTYWZhcmkvNTM3LjM2vN Content-Type: multipart/mixed; boundary="----=ALIBOUNDARY_114028_7fb994e9a700_63e5e7f3_132412" This is a multi-part message in MIME format. ------=ALIBOUNDARY_114028_7fb994e9a700_63e5e7f3_132412 Content-Type: multipart/alternative; boundary="----=ALIBOUNDARY_114028_7fb994e9a700_63e5e7f3_132413" ------=ALIBOUNDARY_114028_7fb994e9a700_63e5e7f3_132413 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: base64 SGksCkkgaGFkIGJyaW5nIHVwIGRvbTAgYW5kIGRvbXUgaW4gYSBhcm0gYm9hcmQuCk9uIG15IGJv YXJkLCB0aGVyZSBhcmUgdHdvIGV0aGVybmV0IGRlaXZjZXMsIEkgdHJ5IHRvIHBhc3N0aHJvdWdo IGEgZXRoZXJuZXQgdG8gZG9tdS4KSSB0cmllZCB0byBwYXNzdGhyb3VnaCBldGhlcm5ldCBhY2Nv cmRpbmcgdG8gdGhlIGZvbGxvd2luZyBtYW51YWxzOgpbMV0gaHR0cHM6Ly9ldmVudHMuc3RhdGlj LmxpbnV4Zm91bmQub3JnL3NpdGVzL2V2ZW50cy9maWxlcy9zbGlkZXMvdGFsa181LnBkZgpbMl0g aHR0cHM6Ly93aWtpLnhlbi5vcmcvaW1hZ2VzLzEvMTcvRGV2aWNlX3Bhc3N0aHJvdWdoX3hlbi5w ZGYKQnV0IEknbSBoYXZpbmcgc29tZSB0cm91YmxlIHRyeWluZy4KZG9tdS5jb25mIGFzIGJlbG93 OgprZXJuZWwgPSAiL21lZGlhL3NkY2FyZDAvZG9tdS1JbWFnZSIKbWVtb3J5ID0gMTAyNApuYW1l ID0gImd1ZXN0MSIKdmNwdXMgPSAyCnNlcmlhbD0icHR5IgpkaXNrID0gWyAncGh5Oi9kZXYvbW1j YmxrMnAyLHh2ZGEsdycgXQpkZXZpY2VfdHJlZSA9ICIvbWVkaWEvc2RjYXJkMC9kb211LmR0YiIg CmR0ZGV2ID0gWyAiL2V0aGVybmV0QGZlMWIwMDAwIiBdIAppcnFzID0gWyAyNTgsIDI1OSBdIApp b21lbSA9IFsgIjB4ZmUxYjAsMUAweDEwMDAwIiBdCmV4dHJhID0gJ2NvbnNvbGU9aHZjMCByb290 PS9kZXYveHZkYSBydyBjbGtfaWdub3JlX3VudXNlZCcKd2hlbiBicmluZyB1cCBkb211LCBmYWls ZWQgbWVzc2FnZSBiZWxvdzoKbGlieGw6IGVycm9yOiBsaWJ4bF9jcmVhdGUuYzoxMTA5OmxpYnhs X19kb21haW5fY29uZmlnX3NldGRlZmF1bHQ6IHBhc3N0aHJvdWdoIG5vdCBzdXBwb3J0ZWQgb24g dGhpcyBwbGF0Zm9ybQpBY2NvcmRpbmcgdG8gWzFdLCBJIGRlbGV0ZSB0aGUgZHRkZXYgb3B0aW9u LCBhbmQgZG9tdSBib290IHVwIGJ1dCBldGhlcm5ldCBmYWlsZWQgdG8gYnJpbmcgdXAuCkFjY29y ZGluZyB0byBtYW51YWxzLCBJdCBzZWVtcyBJIG5lZWQgdG8gYWRkIGNsb2NrIGludG8gZG9tdS5k dGIsIGFuZCBjaGFuZ2UgdGhlIGNsb2NrIHJlZyB0byB2aXJ0dWFsIHJlZyA/CkhvdyBjYW4gSSBj YWxjdWF0ZSB0aGUgdmlydHVhbCByZWc/CkNhbiBhbnlvbmUgZ2l2ZSBtZSBzb21lIGFkdmljZSBo b3cgdG8gcGFzc3Rocm91Z2ggdGhlIGV0aGVybmV0IGRldmljZSB0byBkb211PwpCZXN0IHJlZ2Fy ZHMKQ2FpbGlnYW5nCg== ------=ALIBOUNDARY_114028_7fb994e9a700_63e5e7f3_132413 Content-Type: text/html; 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It is not clear that any of the current patches solve > > the problem. > > > > I think there are two problems here: One, the virtual machine that > > creates xen uses QEMU and the UEFI bios is not able to communicate the > > resolution data to the system. Two, this kind of problem would be easily > > solved by virtualizing a more modern vga instead of the current cards > > (cirrus etc.) > > Actually, this might be a bug in Xen 4.16 that was not in Xen 4.14. > > On Debian 11 (bullseye/stable for Dom0) booting HVM with Tiano Core > UEFI works for me using vga = stdvga and videoram = 16: > > With Debian 11.x stable for dom0, the Xen version is 4.14 and the Qemu > version is a bit old, 5.2, but booting with ovmf/uefi works: > > I boot Debian 11.x (stable) in a Xen HVM using ovmf using vga = stdvga in the > xl.cfg and it seems to work in a VNC window. I can get 1920x1080 resolution > (with videoram = 16 in the xl.cfg), but this only works on Debian stable dom0 > with Xen version 4.14.x and Qemu version 5.1 (haven't checked if Debian > backported Qemu version 7.0 for Debian 11 also works). > > After login, use the gnome display settings and it gives the option of up > to 1920x1080 resolution with videoram = 16. I presume KDE, XFCE, MATE, etc. > also would allow this. > > It is true the Tiano Core UEFI boot configuration setup screen and the grub > screen resolution is low (I think only 800x600) at the beginning of booting. > > Here is my xl config for ovmf (UEFI booting with vga = stdvga, videoram = 16) > and a VNC display and Debian stable with Xen 4.14.x dom0 and Qemu 5.2 in > dom0 on Debian stable: > > --- domain configuration file --- > builder = 'hvm' > bios = 'ovmf' > memory = '6144' > vcpus = '4' > disk = ['/dev/linux/bullseye,,xvda,w'] > name = 'bullseye-hvm' > vif = [ 'mac=,type=vif,script=vif-route,ip=' ] > on_poweroff = 'destroy' > on_reboot = 'restart' > on_crash = 'restart' > boot = 'c' > acpi = '1' > apic = '1' > viridian = '1' > xen_platform_pci = '1' > serial = 'pty' > vga = 'stdvga' > videoram = '16' > sdl = '0' > vnc = '1' > vnclisten = '0.0.0.0' > vncdisplay = '1' > usb = '1' > usbdevice = 'tablet' > --- End of domain configuration file --- > > But the same configuration with Xen 4.16 and Qemu 7.1 in dom0 that is in Debian > unstable, and also in Fedora 36 with Xen 4.16 and Qemu 6.2 I think, I get a crash at > boot - it does show the Tiano Core configuration screen and grub screen at 800x600 > resolution but crashes soon after. When trying to boot Fedora 36 in a Xen HVM with > ovmf, I got this in the journal of dom0: > > xen-qemu-system-i386: relocate_memory 4096 pages from GFN bf000 to GFN c1000 failed: Invalid argument > > Also, with a good boot (using seabios) I get this in the journal of the guest, > but is missing from the boot that crashes: > > fedora kernel: BIOS-e820: [mem 0x00000000fc000000-0x00000000fcffffff] reserved > > The size of this missing entry is 4096 pages, which is probably what Qemu is trying to > relocate but cannot with ovmf/uefi boot because it is missing. 4096 pages is 16 MB, > which is probably the video shared memory. > > This is probably a bug/regression in Xen somewhere between Xen 4.14 and 4.16 > and I will try to bisect it when I have time. I am adding this information to complete the discussion of this problem I reported several months ago: I discovered the cause of the problems of ovmf/uefi booting with more recent Xen versions - it is not a bug in Xen, but the problem occurs because newer versions of ovmf do not have Xen support in the OvmfPkgX64 target from edk2 and the Xen support is only available from the Xen-specific OvmfXen target from edk2. The problem is discussed here on the Arch Linux forums: https://bbs.archlinux.org/viewtopic.php?pid=2012659#p2012659 The last version that had the Xen support in the OvmfPkgX64 target was edk2-stable202105, so for newer versions it is necessary to build and use the Xen-specific OVMF.fd firmware target to boot properly on Xen. After building using 'OvmfPkg/build.sh -p OvmfPkg/OvmfXen.dsc' as explained here: https://lore.kernel.org/all/20190813113119.14804-1-anthony.perard@citrix.com/ from the edk2 source at https://github.com/tianocore/edk2 and using the resulting OVMF.fd firmware target with Xen support to boot the Xen HVM guest, the guest works properly with versions of ovmf edk2-stable202108 and newer. Unfortunately distros such as Debian and Fedora don't provide the Xen specific target in their ovmf packages, so it is necessary to build it from source for ovmf versions of edk2-stable202108 and newer. From xen-users-bounces@lists.xenproject.org Tue Feb 14 18:04:31 2023 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Tue, 14 Feb 2023 18:04:31 +0000 Received: from list by lists.xenproject.org with outflank-mailman.495486.765865 (Exim 4.92) (envelope-from ) id 1pRzeS-00038q-5j; Tue, 14 Feb 2023 18:03:36 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 495486.765865; Tue, 14 Feb 2023 18:03:36 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pRzeS-00038h-2f; Tue, 14 Feb 2023 18:03:36 +0000 Received: by outflank-mailman (input) for mailman id 495486; Tue, 14 Feb 2023 18:03:34 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pRzeQ-0002pa-BV for xen-users@lists.xen.org; Tue, 14 Feb 2023 18:03:34 +0000 Received: from mail.xenproject.org (mail.xenproject.org [104.130.215.37]) by se1-gles-sth1.inumbo.com (Halon) with ESMTPS id e29bad6b-ac91-11ed-933c-83870f6b2ba8; Tue, 14 Feb 2023 19:03:32 +0100 (CET) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pRze8-00074n-P6; Tue, 14 Feb 2023 18:03:16 +0000 Received: from andrewcoop by xenbits.xenproject.org with local (Exim 4.92) (envelope-from ) id 1pRze8-0007sq-Ni; Tue, 14 Feb 2023 18:03:16 +0000 X-BeenThere: xen-users@lists.xenproject.org List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Precedence: list Sender: "Xen-users" X-Inumbo-ID: e29bad6b-ac91-11ed-933c-83870f6b2ba8 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=xen.org; s=20200302mail; h=Date:Message-Id:Subject:CC:From:To:MIME-Version: Content-Transfer-Encoding:Content-Type; bh=wOtcK6/0BSW7PzaouV1UXsUM6DO4roV3+RcOb5t2Yi8=; b=PXePhEeRJ19SZpuPldjuDayADI R9x62QaQAKgWTXEdyXoTyREMdEJk0ZRqjfbj+qiZT0+01Gb+b7MeWQpBCsveATfAjHH5II/ciZ5/W XBXbg+Fn7oX3clQYQyYvu9qTJ0omR5MLhkx5wj/+VGymvXv20GpAbsoTNVTkbOskY+zg=; Content-Type: multipart/mixed; boundary="=separator"; charset="utf-8" Content-Transfer-Encoding: binary MIME-Version: 1.0 X-Mailer: MIME-tools 5.509 (Entity 5.509) To: xen-announce@lists.xen.org, xen-devel@lists.xen.org, xen-users@lists.xen.org, oss-security@lists.openwall.com From: Xen.org security team CC: Xen.org security team Subject: Xen Security Advisory 426 v1 (CVE-2022-27672) - x86: Cross-Thread Return Address Predictions Message-Id: Date: Tue, 14 Feb 2023 18:03:16 +0000 --=separator Content-Type: text/plain; charset="utf-8" Content-Disposition: inline Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Xen Security Advisory CVE-2022-27672 / XSA-426 x86: Cross-Thread Return Address Predictions ISSUE DESCRIPTION ================= It has been discovered that on some AMD CPUs, the RAS (Return Address Stack, also called RAP - Return Address Predictor - in some AMD documentation, and RSB - Return Stack Buffer - in Intel terminology) is dynamically partitioned between non-idle threads. This allows an attacker to control speculative execution on the adjacent thread. For more details, see: https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1045 IMPACT ====== An attacker might be able to infer the contents of arbitrary host memory, including memory assigned to other guests. VULNERABLE SYSTEMS ================== Only AMD CPUs are known to be potentially vulnerable. CPUs from other hardware vendors are not believed to be impacted. Only the Zen1 and Zen2 microarchitectures are believed to be potentially vulnerable. Other microarchitectures are not believed to be vulnerable. Only configurations with SMT activate are potentially vulnerable. If SMT is disabled by the firmware, or at runtime with `smt=0` on Xen's command line, then the platform is not vulnerable. Xen 4.17 and later contains an optimisation, specifically: c/s afab477fba3b ("x86/spec-ctrl: Skip RSB overwriting when safe to do so") which in combination with disabling 32bit PV guests (either at compile time with CONFIG_PV32=n, or at runtime with `pv=no-32` on the command line) renders Xen vulnerable to attack from PV guests. Note: multiple downstreams are known to have backported this optimisation to older versions of Xen. Consult your software vendor documentation. MITIGATION ========== On otherwise-vulnerable configurations, the issue can be mitigated by booting Xen with `spec-ctrl=rsb`, which will override the aforementioned optimisation. Alternatively, SMT can be disabled either in the firmware, or by booting Xen with `smt=0`. Alternatively, if 32bit PV guests are only runtime disabled in Xen, this issue can also be mitigated by booting Xen with `pv=32` to enable support 32bit PV guests. It is not necessary for a 32bit PV guest to actually be running in order to mitigate the issue. RESOLUTION ========== Applying the attached patch resolves this issue. Note that patches for released versions are generally prepared to apply to the stable branches, and may not apply cleanly to the most recent release tarball. Downstreams are encouraged to update to the tip of the stable branch before applying these patches. xsa426.patch xen-unstable - Xen 4.17 $ sha256sum xsa426* 425b1d8931e02852afec9fe3d9f1d009f6d8a33c6387b2e8b3896f374732d470 xsa426.patch $ -----BEGIN PGP SIGNATURE----- iQFABAEBCAAqFiEEI+MiLBRfRHX6gGCng/4UyVfoK9kFAmPrzJoMHHBncEB4ZW4u b3JnAAoJEIP+FMlX6CvZiqsIALrisP3l7ImoKe49Bmb1blNYmUv6UjYGdVF9acc9 ++QYPLq4Mu+kJuIlgKnT21hj7BFczL4KSi8sVw/nLqU3x8R/ZJ6nxXLlCod6RqGw 4MYd6QmArx8a+hm3LC0288VEFVXFh0WTDA6PK15RkspiwcjsAZ4w7DA7cRk0FLP0 9KJMhSPOAj9wCDhvOckr7DnA+D6gOKjMH83NCL0rg6Xe8+Bv0qTVYe49FqAnbWwc 9RsYOKfRuZUci+Z+mALVRB97R7xvns5D9HnDvs55ADri506JWkxmdp1GvLtjezXV 3Zds6TOrr1i0RQGV9M6aouinrI+DQNrOFR8V6p98KYxAo+Y= =T8Uh -----END PGP SIGNATURE----- --=separator Content-Type: application/octet-stream; name="xsa426.patch" Content-Disposition: attachment; filename="xsa426.patch" Content-Transfer-Encoding: base64 RnJvbTogQW5kcmV3IENvb3BlciA8YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNv 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helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pSiJd-000698-LB for xen-users@lists.xen.org; Thu, 16 Feb 2023 17:45:05 +0000 Received: from mail.xenproject.org (mail.xenproject.org [104.130.215.37]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id a09a86c2-ae21-11ed-93b5-47a8fe42b414; Thu, 16 Feb 2023 18:45:00 +0100 (CET) Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pSiJN-0002Kh-7g; Thu, 16 Feb 2023 17:44:49 +0000 Received: from andrewcoop by xenbits.xenproject.org with local (Exim 4.92) (envelope-from ) id 1pSiJN-0000j3-5f; Thu, 16 Feb 2023 17:44:49 +0000 X-BeenThere: xen-users@lists.xenproject.org List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Precedence: list Sender: "Xen-users" X-Inumbo-ID: a09a86c2-ae21-11ed-93b5-47a8fe42b414 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=xen.org; s=20200302mail; h=Date:Message-Id:Subject:CC:From:To:MIME-Version: Content-Transfer-Encoding:Content-Type; bh=gVlMyknwYbBFxIAmk6bJKXG1nRp1hzFYvzTLkEeKQVY=; b=c86dFYsX4HBbPeHKMzANDywfKG o07r6j+cAueqldgLBeuGWLT6XrZIhDjGT+XE8UJHD2lDp2vAcQ1PQ7ws2f/8TiyWVbZAG1bFYnt+k KLrHet9v00P7NMlWarSEN0v9JR4m/uuKahWTI/Gl3WxuqAodVh4dD1YnsulpfO+RRjKE=; Content-Type: multipart/mixed; boundary="=separator"; charset="utf-8" Content-Transfer-Encoding: binary MIME-Version: 1.0 X-Mailer: MIME-tools 5.509 (Entity 5.509) To: xen-announce@lists.xen.org, xen-devel@lists.xen.org, xen-users@lists.xen.org, oss-security@lists.openwall.com From: Xen.org security team CC: Xen.org security team Subject: Xen Security Advisory 426 v2 (CVE-2022-27672) - x86: Cross-Thread Return Address Predictions Message-Id: Date: Thu, 16 Feb 2023 17:44:49 +0000 --=separator Content-Type: text/plain; charset="utf-8" Content-Disposition: inline Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Xen Security Advisory CVE-2022-27672 / XSA-426 version 2 x86: Cross-Thread Return Address Predictions UPDATES IN VERSION 2 ==================== Xen 4.16 is vulnerable too. The previous analysis of impacted versions was incorrect. The same patch is applicable to Xen 4.16, and the staging-4.16 branch has already had the backport applied. ISSUE DESCRIPTION ================= It has been discovered that on some AMD CPUs, the RAS (Return Address Stack, also called RAP - Return Address Predictor - in some AMD documentation, and RSB - Return Stack Buffer - in Intel terminology) is dynamically partitioned between non-idle threads. This allows an attacker to control speculative execution on the adjacent thread. For more details, see: https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1045 IMPACT ====== An attacker might be able to infer the contents of arbitrary host memory, including memory assigned to other guests. VULNERABLE SYSTEMS ================== Only AMD CPUs are known to be potentially vulnerable. CPUs from other hardware vendors are not believed to be impacted. Only the Zen1 and Zen2 microarchitectures are believed to be potentially vulnerable. Other microarchitectures are not believed to be vulnerable. Only configurations with SMT activate are potentially vulnerable. If SMT is disabled by the firmware, or at runtime with `smt=0` on Xen's command line, then the platform is not vulnerable. Xen 4.16 and later contains an optimisation, specifically: c/s afab477fba3b ("x86/spec-ctrl: Skip RSB overwriting when safe to do so") which in combination with disabling 32bit PV guests (either at compile time with CONFIG_PV32=n, or at runtime with `pv=no-32` on the command line) renders Xen vulnerable to attack from PV guests. Note: multiple downstreams are known to have backported this optimisation to older versions of Xen. Consult your software vendor documentation. MITIGATION ========== On otherwise-vulnerable configurations, the issue can be mitigated by booting Xen with `spec-ctrl=rsb`, which will override the aforementioned optimisation. Alternatively, SMT can be disabled either in the firmware, or by booting Xen with `smt=0`. Alternatively, if 32bit PV guests are only runtime disabled in Xen, this issue can also be mitigated by booting Xen with `pv=32` to enable support 32bit PV guests. It is not necessary for a 32bit PV guest to actually be running in order to mitigate the issue. RESOLUTION ========== Applying the attached patch resolves this issue. Note that patches for released versions are generally prepared to apply to the stable branches, and may not apply cleanly to the most recent release tarball. Downstreams are encouraged to update to the tip of the stable branch before applying these patches. xsa426.patch xen-unstable - Xen 4.16 $ sha256sum xsa426* 425b1d8931e02852afec9fe3d9f1d009f6d8a33c6387b2e8b3896f374732d470 xsa426.patch $ -----BEGIN PGP SIGNATURE----- iQFABAEBCAAqFiEEI+MiLBRfRHX6gGCng/4UyVfoK9kFAmPuawUMHHBncEB4ZW4u b3JnAAoJEIP+FMlX6CvZW1UIAJ6tjOwbjPJigbSVVfyr5FRnIIYjzVBqkhL5ufvc TQY6ZoPsEEkXzx+jJeVa3NveiegqNvIdK26exlp7n2NrrWCRWlrdGlp+/83TWfUA gwxBzERTVBmi67+9razBYKzxKAwXO2zOHsvgSB2aCX43K+e9SvlKMny8Wp9j0Z99 SRGxzZ8D4I7kKnMMpQIGvp/rt5+k+Q2oxXmNHnIsnCGshF+Y+zK7VwlSEpFYE1ga 78XWYULa1qOEbaj+xsPtf9mMIiWfViwKkX7ZT/EPFBbFxGHSK/aeiQmWdNcFGI3D 6L7vfJIo1Xsw26ozja+C+m3cFPhNSYJDRj92oCKmLPl8iII= =hFGs -----END PGP SIGNATURE----- --=separator Content-Type: application/octet-stream; name="xsa426.patch" Content-Disposition: attachment; filename="xsa426.patch" Content-Transfer-Encoding: base64 RnJvbTogQW5kcmV3IENvb3BlciA8YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNv 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"xen-users@lists.xenproject.org" Subject: XEN ARM dt passthrough Thread-Topic: XEN ARM dt passthrough Thread-Index: AdlF2KJTkriPBvyJQ0GiDGEJCTS4BA== Date: Tue, 21 Feb 2023 09:43:22 +0000 Message-ID: Accept-Language: nl-NL, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; x-ms-publictraffictype: Email x-ms-traffictypediagnostic: AM0PR04MB4786:EE_|VI1PR04MB6879:EE_ x-ms-office365-filtering-correlation-id: 606beeb2-f6ae-4a12-97e8-08db13f01256 x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: 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X-MS-Exchange-CrossTenant-Network-Message-Id: 606beeb2-f6ae-4a12-97e8-08db13f01256 X-MS-Exchange-CrossTenant-originalarrivaltime: 21 Feb 2023 09:43:22.3332 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: 7p9QU773aDpsVLM49oTEZaylIRcIJ+u3eljzbWb5A2df1J1Q7C6NmyV23O8bQrNlAZFRMjXZ9I7IOVpmXxzNFm5IX6PPN61vF/8j383TcSI= X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR04MB6879 Hi, I'm trying to follow this guide to passthrough a device tree device. https://xenbits.xen.org/docs/unstable/misc/arm/passthrough.txt The device doesn't have an IOMMU thus I've enabled=20 xen,force-assign-without-iommu In the guest dts but when I create the VM I get the following message. user@imx8mpnavq:~/guest$ sudo xl create domU_test Parsing config from domU_test libxl: error: libxl_create.c:1135:libxl__domain_config_setdefault: passthro= ugh not supported on this platform failed to free memory for the domain How do I enable the support for passthrough for my ARM based platform? Yours sincerely, Peter van der Perk From xen-users-bounces@lists.xenproject.org Wed Feb 22 20:46:46 2023 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Wed, 22 Feb 2023 20:46:46 +0000 Received: from list by lists.xenproject.org with outflank-mailman.499345.771071 (Exim 4.92) (envelope-from ) id 1pUvzb-0007xu-JC; Wed, 22 Feb 2023 20:45:35 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 499345.771071; Wed, 22 Feb 2023 20:45:35 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pUvzb-0007xj-Ex; Wed, 22 Feb 2023 20:45:35 +0000 Received: by outflank-mailman (input) for mailman id 499345; Wed, 22 Feb 2023 10:31:12 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pUmP2-0002wn-A7 for 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helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pVFel-000485-RL for xen-users@lists.xenproject.org; Thu, 23 Feb 2023 17:45:23 +0000 Received: from mail-pl1-x62b.google.com (mail-pl1-x62b.google.com [2607:f8b0:4864:20::62b]) by se1-gles-sth1.inumbo.com (Halon) with ESMTPS id d721b540-b3a1-11ed-88bb-e56d68cac8db; Thu, 23 Feb 2023 18:45:22 +0100 (CET) Received: by mail-pl1-x62b.google.com with SMTP id l15so15072703pls.1 for ; Thu, 23 Feb 2023 09:45:20 -0800 (PST) X-BeenThere: xen-users@lists.xenproject.org List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Precedence: list Sender: "Xen-users" X-Inumbo-ID: d721b540-b3a1-11ed-88bb-e56d68cac8db DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=leftsock.com; s=google; h=to:subject:message-id:date:from:in-reply-to:references:mime-version :from:to:cc:subject:date:message-id:reply-to; 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X-Google-Smtp-Source: AK7set+RvGPY07dCyH/uvq5syyB9jcKiE6wBR3kUYNL7L6gE8sogxKOjmtGSr+C0pBi8erbynk9LwjUU0N6SrZcwUAA= X-Received: by 2002:a17:90a:f82:b0:237:29b1:188f with SMTP id 2-20020a17090a0f8200b0023729b1188fmr616392pjz.8.1677174318462; Thu, 23 Feb 2023 09:45:18 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Kevin Wang Date: Thu, 23 Feb 2023 09:45:06 -0800 Message-ID: Subject: >NFS performance issue on Xen virtual machine To: xen-users@lists.xenproject.org Content-Type: multipart/alternative; boundary="0000000000007a8f4e05f561939a" --0000000000007a8f4e05f561939a Content-Type: text/plain; charset="UTF-8" > > > From: CamZie > > We are using NFS storage mount on our servers and we have noticed the > difference with the write performance > It has been decades since I've used NFS and have never used Xen with NFS, but I distinctly recall that CPU latency can be a huge problem with performance. The one instance I recall was that I ran 4 cpu-intensive processes on a 4-cpu nfs server, and the context switching time of the kernel caused all clients (dozens to hundreds) to become significantly (10x?) slower. Running just 1 cpu-intensive process still noticeably degraded the server's performance. I would suggest making sure that all the CPUs are idle, perhaps test with more cores? (i.e. more than 1) In general NFS is very very latency sensitive. TCP might help with throughput (reading one large file) as it's been known to help with far away (25 ms) servers, but for transactional cost (i.e. open/write/close/stat) lots of files, it shouldn't. - Kevin --0000000000007a8f4e05f561939a Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

From: CamZie <camzie@protonmail.com>

We are using NFS storage mount on our servers and we have noticed the diffe= rence with the write performance=C2=A0

= It has been decades since I've used NFS and have never used Xen with NF= S, but I distinctly recall that CPU latency can be a huge problem with perf= ormance.

The one instance I recall was that I ran = 4 cpu-intensive processes on a 4-cpu nfs server, and the context switching = time of the kernel caused all clients (dozens to hundreds) to become signif= icantly (10x?) slower. Running just 1 cpu-intensive process still noticeabl= y degraded the server's performance.

I would s= uggest making sure that all the CPUs are idle, perhaps test with more cores= ? (i.e. more than 1)

In general NFS is very very l= atency sensitive. TCP might help with throughput (reading one large file) a= s it's been known to help with far away (25 ms) servers, but for transa= ctional cost (i.e. open/write/close/stat) lots of files, it shouldn't.<= /div>

=C2=A0 =C2=A0- Kevin
--0000000000007a8f4e05f561939a-- From xen-users-bounces@lists.xenproject.org Thu Feb 23 18:12:44 2023 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Thu, 23 Feb 2023 18:12:44 +0000 Received: from list by lists.xenproject.org with outflank-mailman.500633.772110 (Exim 4.92) (envelope-from ) id 1pVG4j-0000mA-Ja; Thu, 23 Feb 2023 18:12:13 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 500633.772110; Thu, 23 Feb 2023 18:12:13 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pVG4j-0000m2-GI; Thu, 23 Feb 2023 18:12:13 +0000 Received: by outflank-mailman (input) for mailman id 500633; Thu, 23 Feb 2023 18:12:12 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pVG4i-0000lw-07 for xen-users@lists.xenproject.org; Thu, 23 Feb 2023 18:12:12 +0000 Received: from mail-pf1-x42c.google.com (mail-pf1-x42c.google.com [2607:f8b0:4864:20::42c]) by se1-gles-sth1.inumbo.com (Halon) with ESMTPS id 96f9f68f-b3a5-11ed-88bb-e56d68cac8db; Thu, 23 Feb 2023 19:12:11 +0100 (CET) Received: by mail-pf1-x42c.google.com with SMTP id b20so7033484pfo.6 for ; Thu, 23 Feb 2023 10:12:11 -0800 (PST) X-BeenThere: xen-users@lists.xenproject.org List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Precedence: list Sender: "Xen-users" X-Inumbo-ID: 96f9f68f-b3a5-11ed-88bb-e56d68cac8db DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=leftsock.com; s=google; h=to:subject:message-id:date:from:in-reply-to:references:mime-version :from:to:cc:subject:date:message-id:reply-to; bh=0xKn96vDdN93rYmgwpcAacb6DLuQgzY53WcGfvUIMFM=; b=P3GtpFA/LZz6QW8do+BeOfzOdivG6KqvZ/8O36tAA5PHlWpAXhV01ljEm792+kLqKi +D3eu0Bha0K/EnfuF2IfwvmpaYGC/5sei71RZbzeVSAAgKTEwv835MefuKkVdrCzRjZX t6vrq840MELTG0dcMBsC+HCFLYfa+IAhxsxpM= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:subject:message-id:date:from:in-reply-to:references:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=0xKn96vDdN93rYmgwpcAacb6DLuQgzY53WcGfvUIMFM=; b=2+5nowGsFFEZlYZXFt4XLgB+hd3CT4aGP30j0+H+6k2/KvgupygjhXNJxynkd4KME7 Il4mud7VTizdT8BEZodQ+Xe3xI2SDn5TjGGxiTK+ml6YB9dol3JdxSntsUnxPdLhTdVJ XnVSF0kBckCmsbQxLSHxk3khSSHp+IoTC2B/2p8zHWcdaAgrD0+xpZNBtmhU2l7JYY15 qgf50talwyYrJxABhh2dPaxMbTbES8PlkOC53yzRuNtfXW/4G5zRxMorNNUSvY9M9VJM FLazObKajRz91Br23wd6sBqPE3iezkq3c/HczEHRwFpZZ23h08D6f7L1wYDcEvHWh21m sNog== X-Gm-Message-State: AO0yUKVNUpww1pguxC0fAw2E0A2deuw5hJ8TTp1CuqtRZfQ5x1c4YbtZ UOHlbJIbm0HnrZQHxMEljbo5sYFCGz3iXDEqw8xKGzfEvFCJtg== X-Google-Smtp-Source: AK7set/vj8H4IOse3VcK5Fvtje0MZagw13rnxx2qeWO2KNfFhJEgZ9rXsr0TW1oWK1886I1RPlkWXQG2cBI8bfYHXeY= X-Received: by 2002:a63:3586:0:b0:4da:a1d0:3f3f with SMTP id c128-20020a633586000000b004daa1d03f3fmr1818441pga.5.1677175929010; Thu, 23 Feb 2023 10:12:09 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Kevin Wang Date: Thu, 23 Feb 2023 10:11:57 -0800 Message-ID: Subject: Fwd: The account has been deactivated To: xen-users@lists.xenproject.org Content-Type: multipart/alternative; boundary="00000000000079995c05f561f3d2" --00000000000079995c05f561f3d2 Content-Type: text/plain; charset="UTF-8" Can an admin please remove deshantm@xen.org from the xen-users@ mailing list? ---------- Forwarded message --------- From: Todd Deshane Date: Thu, Feb 23, 2023 at 9:46 AM Subject: The account has been deactivated The account todd.deshane@xen.org has been deactivated --00000000000079995c05f561f3d2 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Can an admin please remove deshantm@xen.org from the xen-users@ mailing list?
<= br>
-------= --- Forwarded message ---------
From: Todd Deshane <deshantm@xen.org>
Date: Thu, Feb 23, 2= 023 at 9:46 AM
Subject: The account has been deactivated

Th= e account todd.de= shane@xen.org has been deactivated
--00000000000079995c05f561f3d2-- From xen-users-bounces@lists.xenproject.org Sun Feb 26 10:36:26 2023 Return-path: Envelope-to: archives@lists.xen.org Delivery-date: Sun, 26 Feb 2023 10:36:26 +0000 Received: from list by lists.xenproject.org with outflank-mailman.501996.773801 (Exim 4.92) (envelope-from ) id 1pWENY-000055-Ov; Sun, 26 Feb 2023 10:35:40 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 501996.773801; Sun, 26 Feb 2023 10:35:40 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pWENY-0008WV-Lr; Sun, 26 Feb 2023 10:35:40 +0000 Received: by outflank-mailman (input) for mailman id 501996; Sun, 26 Feb 2023 10:35:39 +0000 Received: from mail.xenproject.org ([104.130.215.37]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pWENX-0008WP-9m for xen-users@lists.xenproject.org; Sun, 26 Feb 2023 10:35:39 +0000 Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pWENX-000484-1x; Sun, 26 Feb 2023 10:35:39 +0000 Received: from gw1.octic.net ([88.97.20.152] helo=[10.0.1.102]) by xenbits.xenproject.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.92) (envelope-from ) id 1pWENW-0000el-Tm; Sun, 26 Feb 2023 10:35:39 +0000 X-BeenThere: xen-users@lists.xenproject.org List-Id: Xen user discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-users-bounces@lists.xenproject.org Precedence: list Sender: "Xen-users" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=xen.org; s=20200302mail; h=Content-Transfer-Encoding:Content-Type:In-Reply-To:From: References:To:Subject:MIME-Version:Date:Message-ID; bh=l4OyCQC0NW8uK9VoFaZuayGS4vUmnOph0mCYksramSc=; b=s7HZgTPmnrvQABp5ujFOxfM9l3 MOTTKuPrTVrRIaSdvedLAP4sWS/DwRQrlASE3q/yWtF0P5kxw7fvtjvbn7MzhZfMtqD7QoWNgmx1e 0HB19KzKXpy0+bpbO31HfAw6k21a6t9srxPVQo4yTLyBX0LJWVcEiYwidVLRm+wvUFCc=; Message-ID: <9c4f1c91-0df2-35b2-9197-ee371a18e476@xen.org> Date: Sun, 26 Feb 2023 10:35:37 +0000 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.7.2 Subject: Re: XEN ARM dt passthrough To: Peter van der Perk , "xen-users@lists.xenproject.org" References: From: Julien Grall In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 21/02/2023 09:43, Peter van der Perk wrote: > Hi, Hello, > I'm trying to follow this guide to passthrough a device tree device. > https://xenbits.xen.org/docs/unstable/misc/arm/passthrough.txt > > The device doesn't have an IOMMU thus I've enabled > xen,force-assign-without-iommu > In the guest dts but when I create the VM I get the following message. The property xen,force-assign-without-iommu is to be used for dom0less domain. When a domain is created by xl... > > user@imx8mpnavq:~/guest$ sudo xl create domU_test > Parsing config from domU_test > libxl: error: libxl_create.c:1135:libxl__domain_config_setdefault: passthrough not supported on this platform ... you want to avoid specifying "dtdev" in the configuration file. Note that this device passthrough without an IOMMU only work with the device is not DMA-capable. If it is DMA-capable, then you will need to direct-map the domain and there will no isolation. Cheers, -- Julien Grall