Add support for sharing CPU page tables with the SMMUv3. Support for I/O page faults and additional features (DVM, VHE and HTTU) needed for SVA is available on my sva/current branch [2] and will be sent later. Since v8 [1]: * Moved the SVA code to arm-smmu-v3-sva.c under CONFIG_ARM_SMMU_V3_SVA. This required moving struct definitions and macros to arm-smmu-v3.h (patch 7), hence the new 700 insertions/deletions in the diffstat. * Updated patches 4 and 8 following review. * Fixed bug in patch 9 when replacing a private ASID. [1] https://lore.kernel.org/linux-iommu/20200618155125.1548969-1-jean-philippe@xxxxxxxxxx/ [2] https://jpbrucker.net/git/linux sva/current Fenghua Yu (1): mm: Define pasid in mm Jean-Philippe Brucker (12): iommu/ioasid: Add ioasid references iommu/sva: Add PASID helpers arm64: mm: Pin down ASIDs for sharing mm with devices iommu/io-pgtable-arm: Move some definitions to a header arm64: cpufeature: Export symbol read_sanitised_ftr_reg() iommu/arm-smmu-v3: Move definitions to a header iommu/arm-smmu-v3: Share process page tables iommu/arm-smmu-v3: Seize private ASID iommu/arm-smmu-v3: Check for SVA features iommu/arm-smmu-v3: Add SVA device feature iommu/arm-smmu-v3: Implement iommu_sva_bind/unbind() iommu/arm-smmu-v3: Hook up ATC invalidation to mm ops drivers/iommu/Kconfig | 17 + drivers/iommu/Makefile | 6 +- arch/arm64/include/asm/mmu.h | 3 + arch/arm64/include/asm/mmu_context.h | 11 +- drivers/iommu/arm-smmu-v3.h | 752 +++++++++++++++++++++++ drivers/iommu/io-pgtable-arm.h | 30 + drivers/iommu/iommu-sva-lib.h | 15 + include/linux/ioasid.h | 10 +- include/linux/mm_types.h | 4 + arch/arm64/kernel/cpufeature.c | 1 + arch/arm64/mm/context.c | 105 +++- drivers/iommu/arm-smmu-v3-sva.c | 487 +++++++++++++++ drivers/iommu/arm-smmu-v3.c | 860 ++++++--------------------- drivers/iommu/intel/iommu.c | 4 +- drivers/iommu/intel/svm.c | 6 +- drivers/iommu/io-pgtable-arm.c | 27 +- drivers/iommu/ioasid.c | 38 +- drivers/iommu/iommu-sva-lib.c | 85 +++ MAINTAINERS | 3 +- 19 files changed, 1729 insertions(+), 735 deletions(-) create mode 100644 drivers/iommu/arm-smmu-v3.h create mode 100644 drivers/iommu/io-pgtable-arm.h create mode 100644 drivers/iommu/iommu-sva-lib.h create mode 100644 drivers/iommu/arm-smmu-v3-sva.c create mode 100644 drivers/iommu/iommu-sva-lib.c -- 2.27.0
