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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT 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 78B0DC43219 for ; Fri, 3 May 2019 22:29:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 539E2206C1 for ; Fri, 3 May 2019 22:29:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726912AbfECW3h (ORCPT ); Fri, 3 May 2019 18:29:37 -0400 Received: from mga02.intel.com ([134.134.136.20]:7005 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726779AbfECW3f (ORCPT ); Fri, 3 May 2019 18:29:35 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 03 May 2019 15:29:33 -0700 X-ExtLoop1: 1 Received: from jacob-builder.jf.intel.com ([10.7.199.155]) by orsmga002.jf.intel.com with ESMTP; 03 May 2019 15:29:33 -0700 From: Jacob Pan To: iommu@lists.linux-foundation.org, LKML , Joerg Roedel , David Woodhouse , Eric Auger , Alex Williamson , Jean-Philippe Brucker Cc: "Yi Liu" , "Tian, Kevin" , Raj Ashok , "Christoph Hellwig" , "Lu Baolu" , Andriy Shevchenko , Jacob Pan Subject: [PATCH v3 07/16] iommu/vtd: Optimize tlb invalidation for vIOMMU Date: Fri, 3 May 2019 15:32:08 -0700 Message-Id: <1556922737-76313-8-git-send-email-jacob.jun.pan@linux.intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1556922737-76313-1-git-send-email-jacob.jun.pan@linux.intel.com> References: <1556922737-76313-1-git-send-email-jacob.jun.pan@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Jacob Pan --- drivers/iommu/intel-svm.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/intel-svm.c b/drivers/iommu/intel-svm.c index 8f87304..f5d1e1e 100644 --- a/drivers/iommu/intel-svm.c +++ b/drivers/iommu/intel-svm.c @@ -211,7 +211,9 @@ static void intel_mm_release(struct mmu_notifier *mn, struct mm_struct *mm) rcu_read_lock(); list_for_each_entry_rcu(sdev, &svm->devs, list) { intel_pasid_tear_down_entry(svm->iommu, sdev->dev, svm->pasid); - intel_flush_svm_range_dev(svm, sdev, 0, -1, 0, !svm->mm); + /* for emulated iommu, PASID cache invalidation implies IOTLB/DTLB */ + if (!cap_caching_mode(svm->iommu->cap)) + intel_flush_svm_range_dev(svm, sdev, 0, -1, 0, !svm->mm); } rcu_read_unlock(); -- 2.7.4