From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BAEA0C02181 for ; Fri, 24 Jan 2025 14:31:52 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.876799.1287150 (Exim 4.92) (envelope-from ) id 1tbKij-0007Oz-KR; Fri, 24 Jan 2025 14:31:41 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 876799.1287150; Fri, 24 Jan 2025 14:31:41 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1tbKij-0007Os-Hg; Fri, 24 Jan 2025 14:31:41 +0000 Received: by outflank-mailman (input) for mailman id 876799; Fri, 24 Jan 2025 14:31:39 +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 1tbKih-0007Oi-Oc for xen-devel@lists.xenproject.org; Fri, 24 Jan 2025 14:31:39 +0000 Received: from mail-pl1-x62a.google.com (mail-pl1-x62a.google.com [2607:f8b0:4864:20::62a]) by se1-gles-sth1.inumbo.com (Halon) with ESMTPS id eb707cd5-da5f-11ef-a0e5-8be0dac302b0; Fri, 24 Jan 2025 15:31:38 +0100 (CET) Received: by mail-pl1-x62a.google.com with SMTP id d9443c01a7336-218c8aca5f1so50835365ad.0 for ; Fri, 24 Jan 2025 06:31:38 -0800 (PST) Received: from localhost ([84.78.159.3]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-21da414130esm16801875ad.111.2025.01.24.06.31.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 24 Jan 2025 06:31:36 -0800 (PST) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: eb707cd5-da5f-11ef-a0e5-8be0dac302b0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=citrix.com; s=google; t=1737729097; x=1738333897; darn=lists.xenproject.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=tvsWvoZq6BRKZKu3jbGoZYBysZtTlW+vOvhDwSNRv+0=; b=Qofug35nImLf1drtS6lu6fFdeTh+3EWNDz7lHvkhX91NXSPme/d7DkCLGqmmw/NvHr q4TvoE/Tmc9YWiIJ7MgVtce5tfmEf6tdWLW+ZtTxNWEKFPNCKZLZ0RXwQubpBYADqYbB 3s1rTUkLELK4x6WgvdRHPXDM8Ca/u73A5fbkg= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1737729097; x=1738333897; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=tvsWvoZq6BRKZKu3jbGoZYBysZtTlW+vOvhDwSNRv+0=; b=W/7hJZ1OIRsvsdKYqmwkE8lmHLRqEHKGDlCIyNJSQxDjURwORMuFkjwZHxt4Y0uOJE cce+HEBkXmIsavz4Rb8do5uSz1aEl5BGT5A/bEHHZcInESHt2jcBlK/XulQ6jHfaQXoW s6oChoL9LmTC9numPBKyVLpR4qU8lHNhcd4LD6Xs0K256wS8kX8RLJVsoVYzQnHi/86Z TFOY8tEe8s0eo1Mw9GxA1tFaCp0detUTbcWvcLF+U7ockXxQZo2Yl0oz4ydbha680P05 HOQKiwxXw3kbv5yjZIfJeAgvR9oOVHHMSXvnT1UP26R1NbEiD66l2P7u0BOrgVtYVWXn Xauw== X-Gm-Message-State: AOJu0Yxse9BnbvWGcP1Gpw5EVu1X7Vre0j4CR89Xm2JVWmDB2oVbrKDL YrOqeCR/F8sqJ+mQqFVHi7U5JCJc2ETUWF47nGjD/WtxQS98ppqb7CDxTzIixLo= X-Gm-Gg: ASbGncuEWxJPOQEDR/8IZOWNPOm7CcWa3du11LlUhULi3S7IvoNHEBKLt+4Z+aMHlOC GPFlr+y5LFeRYPidwgNjMJnbm0lbez1yBCJdfsGZUqf1UdzNiJD1DxApeaHKO0eJkWXzCuuaywR 72HeyuZi/YvidclwXiIIlPBeW2LX2DL1D7OThkWaeHlmCWOavNQdSCG3Pgpd2ffMqDH9Bh8zMAz /430V1mB1FmLfaouXbf5Oe3Slyol430V1L4OMpc0bw5wWjgDDru2Ps3EfABFYhyHl/Qy47JulJY i49xhHTnUw== X-Google-Smtp-Source: AGHT+IHShirqn2nSv9AUkshTdIGi7nAT+R5X2yHOU2NiXaSlWOXkBWZXDPw6E15Hfla6KJ9stGjGVw== X-Received: by 2002:a17:902:d50e:b0:216:73f0:ef63 with SMTP id d9443c01a7336-21c3563c76cmr456757925ad.49.1737729097292; Fri, 24 Jan 2025 06:31:37 -0800 (PST) Date: Fri, 24 Jan 2025 15:31:30 +0100 From: Roger Pau =?utf-8?B?TW9ubsOp?= To: Elliott Mitchell Cc: xen-devel@lists.xenproject.org, Jan Beulich , Andrew Cooper Subject: Re: Serious AMD-Vi issue Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: On Thu, Jan 25, 2024 at 12:24:53PM -0800, Elliott Mitchell wrote: > Apparently this was first noticed with 4.14, but more recently I've been > able to reproduce the issue: > > https://bugs.debian.org/988477 > > The original observation features MD-RAID1 using a pair of Samsung > SATA-attached flash devices. The main line shows up in `xl dmesg`: > > (XEN) AMD-Vi: IO_PAGE_FAULT: DDDD:bb:dd.f d0 addr ffffff???????000 flags 0x8 I I think I've figured out the cause for those faults, and posted a fix here: https://lore.kernel.org/xen-devel/20250124120112.56678-1-roger.pau@citrix.com/ Fix is patch 5/5, but you likely want to take them all to avoid context conflicts. Can you give it a try and see if it fixes the fault messages, plus your issues with the disk devices? Regards, Roger.