Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751577AbdLNBIy (ORCPT ); Wed, 13 Dec 2017 20:08:54 -0500 Received: from mga11.intel.com ([192.55.52.93]:12940 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751092AbdLNBIx (ORCPT ); Wed, 13 Dec 2017 20:08:53 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.45,399,1508828400"; d="scan'208";a="2612158" From: Lu Baolu To: Thomas Gleixner , Ingo Molnar , "H . Peter Anvin" , Alex Williamson , Joerg Roedel , David Woodhouse Cc: iommu@lists.linux-foundation.org, x86@kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Lu Baolu Subject: [PATCH 0/2] Kernel MMU notifier for IOTLB/DEVTLB management Date: Thu, 14 Dec 2017 09:02:44 +0800 Message-Id: <1513213366-22594-1-git-send-email-baolu.lu@linux.intel.com> X-Mailer: git-send-email 2.7.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 962 Lines: 25 Shared Virtual Memory (SVM) allows a kernel memory mapping to be shared between CPU and and a device which requested a supervisor PASID. Both devices and IOMMU units have TLBs that cache entries from CPU's page tables. We need to get a chance to flush them at the same time when we flush the CPU TLBs. These patches handle this by adding a kernel MMU notifier chain. The callbacks on this chain will be called whenever the CPU TLB is flushed for the kernel address space. Ashok Raj (1): iommu/vt-d: Register kernel MMU notifier to manage IOTLB/DEVTLB Huang Ying (1): mm: Add kernel MMU notifier to manage IOTLB/DEVTLB arch/x86/mm/tlb.c | 2 ++ drivers/iommu/intel-svm.c | 27 +++++++++++++++++++++++++-- include/linux/intel-iommu.h | 5 ++++- include/linux/mmu_notifier.h | 33 +++++++++++++++++++++++++++++++++ mm/mmu_notifier.c | 27 +++++++++++++++++++++++++++ 5 files changed, 91 insertions(+), 3 deletions(-) -- 2.7.4