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@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
