[PATCH v9 00/13] iommu: Shared Virtual Addressing for SMMUv3 (PT sharing part)

[Jean-Philippe Brucker]

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@linaro.org/
[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