From mboxrd@z Thu Jan 1 00:00:00 1970 From: 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> Return-path: Sender: owner-linux-mm@kvack.org 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 List-Id: iommu@lists.linux-foundation.org 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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org