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 X-Spam-Level: X-Spam-Status: No, score=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 836A3C433E0 for ; Fri, 15 Jan 2021 10:27:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3BB902313E for ; Fri, 15 Jan 2021 10:27:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727144AbhAOK1S (ORCPT ); Fri, 15 Jan 2021 05:27:18 -0500 Received: from forward2-smtp.messagingengine.com ([66.111.4.226]:55119 "EHLO forward2-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726652AbhAOK1S (ORCPT ); Fri, 15 Jan 2021 05:27:18 -0500 Received: from compute4.internal (compute4.nyi.internal [10.202.2.44]) by mailforward.nyi.internal (Postfix) with ESMTP id 2DAD019C3E4A; Fri, 15 Jan 2021 05:26:12 -0500 (EST) Received: from mailfrontend1 ([10.202.2.162]) by compute4.internal (MEProxy); Fri, 15 Jan 2021 05:26:12 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:content-type :date:from:message-id:mime-version:subject:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm1; bh=TngPgU Ut+a902GQCm+/7fts43p6Bjz7zAAtRIxCUb1c=; b=Wn9p5bVyLTzI0x+aVWz1Vy uXuIHsTFFcdTFdy+Aeu9ZOfZetciLxPXlDJDIyNkC1Zeiy1CrVXp8rn6iYy9dwBO CjFeW5UQe2BpNLOwuV8NzuJsk2J9TwAKnmSQCdz5972Q1sbmmvjuKeruRXBPRjTn cS9vlVHDLVYCrXChZbsjIiXl249/BDAH3Gurk7CxB8v9FPvuV21zsfbBGCcJqKK9 n20g3EG9TxLmGVg9jttlQ1zju6PhWd+vZQbexiknfj9yUe6e2VsMdATK6XP+s1On SmSVStCoUNPvSWQrQNcAlldyP5QrRhIsWxzqPG8K+N9asO2kvcf5klZtbmA6GOxA == X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduledrtddugddugeefucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucenucfjughrpefuvffhfffkgggtgfesthekredttd dtlfenucfhrhhomhepoehgrhgvghhkhheslhhinhhugihfohhunhgurghtihhonhdrohhr gheqnecuggftrfgrthhtvghrnhepleelledvgeefleeltdetgedugeffgffhudffudduke egfeelgeeigeekjefhleevnecuffhomhgrihhnpehkvghrnhgvlhdrohhrghenucfkphep keefrdekiedrjeegrdeigeenucevlhhushhtvghrufhiiigvpeefnecurfgrrhgrmhepmh grihhlfhhrohhmpehgrhgvgheskhhrohgrhhdrtghomh X-ME-Proxy: Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) by mail.messagingengine.com (Postfix) with ESMTPA id CDA1B24005C; Fri, 15 Jan 2021 05:26:11 -0500 (EST) Subject: FAILED: patch "[PATCH] iommu/vt-d: Fix ineffective devTLB invalidation for" failed to apply to 5.10-stable tree To: yi.l.liu@intel.com, baolu.lu@linux.intel.com, will@kernel.org Cc: From: Date: Fri, 15 Jan 2021 11:26:02 +0100 Message-ID: <161070636285136@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 7c29ada5e70083805bc3a68daa23441df421fbee Mon Sep 17 00:00:00 2001 From: Liu Yi L Date: Thu, 7 Jan 2021 00:03:57 +0800 Subject: [PATCH] iommu/vt-d: Fix ineffective devTLB invalidation for subdevices iommu_flush_dev_iotlb() is called to invalidate caches on a device but only loops over the devices which are fully-attached to the domain. For sub-devices, this is ineffective and can result in invalid caching entries left on the device. Fix the missing invalidation by adding a loop over the subdevices and ensuring that 'domain->has_iotlb_device' is updated when attaching to subdevices. Fixes: 67b8e02b5e76 ("iommu/vt-d: Aux-domain specific domain attach/detach") Signed-off-by: Liu Yi L Acked-by: Lu Baolu Link: https://lore.kernel.org/r/1609949037-25291-4-git-send-email-yi.l.liu@intel.com Signed-off-by: Will Deacon diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index d7720a836268..65cf06d70bf4 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -719,6 +719,8 @@ static int domain_update_device_node(struct dmar_domain *domain) return nid; } +static void domain_update_iotlb(struct dmar_domain *domain); + /* Some capabilities may be different across iommus */ static void domain_update_iommu_cap(struct dmar_domain *domain) { @@ -744,6 +746,8 @@ static void domain_update_iommu_cap(struct dmar_domain *domain) domain->domain.geometry.aperture_end = __DOMAIN_MAX_ADDR(domain->gaw - 1); else domain->domain.geometry.aperture_end = __DOMAIN_MAX_ADDR(domain->gaw); + + domain_update_iotlb(domain); } struct context_entry *iommu_context_addr(struct intel_iommu *iommu, u8 bus, @@ -1464,17 +1468,22 @@ static void domain_update_iotlb(struct dmar_domain *domain) assert_spin_locked(&device_domain_lock); - list_for_each_entry(info, &domain->devices, link) { - struct pci_dev *pdev; - - if (!info->dev || !dev_is_pci(info->dev)) - continue; - - pdev = to_pci_dev(info->dev); - if (pdev->ats_enabled) { + list_for_each_entry(info, &domain->devices, link) + if (info->ats_enabled) { has_iotlb_device = true; break; } + + if (!has_iotlb_device) { + struct subdev_domain_info *sinfo; + + list_for_each_entry(sinfo, &domain->subdevices, link_domain) { + info = get_domain_info(sinfo->pdev); + if (info && info->ats_enabled) { + has_iotlb_device = true; + break; + } + } } domain->has_iotlb_device = has_iotlb_device; @@ -1555,25 +1564,37 @@ static void iommu_disable_dev_iotlb(struct device_domain_info *info) #endif } +static void __iommu_flush_dev_iotlb(struct device_domain_info *info, + u64 addr, unsigned int mask) +{ + u16 sid, qdep; + + if (!info || !info->ats_enabled) + return; + + sid = info->bus << 8 | info->devfn; + qdep = info->ats_qdep; + qi_flush_dev_iotlb(info->iommu, sid, info->pfsid, + qdep, addr, mask); +} + static void iommu_flush_dev_iotlb(struct dmar_domain *domain, u64 addr, unsigned mask) { - u16 sid, qdep; unsigned long flags; struct device_domain_info *info; + struct subdev_domain_info *sinfo; if (!domain->has_iotlb_device) return; spin_lock_irqsave(&device_domain_lock, flags); - list_for_each_entry(info, &domain->devices, link) { - if (!info->ats_enabled) - continue; + list_for_each_entry(info, &domain->devices, link) + __iommu_flush_dev_iotlb(info, addr, mask); - sid = info->bus << 8 | info->devfn; - qdep = info->ats_qdep; - qi_flush_dev_iotlb(info->iommu, sid, info->pfsid, - qdep, addr, mask); + list_for_each_entry(sinfo, &domain->subdevices, link_domain) { + info = get_domain_info(sinfo->pdev); + __iommu_flush_dev_iotlb(info, addr, mask); } spin_unlock_irqrestore(&device_domain_lock, flags); }