[PATCH v10 00/13] iommu: Shared Virtual Addressing for SMMUv3 (PT sharing part)

[Jean-Philippe Brucker]

This is version 10 of the page table sharing support for Arm SMMUv3.
Patch 1 still needs an Ack from mm maintainers. However patches 4-11 do
not depend on it, and could get merged for v5.10 regardless.

v10:
* Fix patches 3, 8, 9 and 10 following Eric's review.

v9 resend: https://lore.kernel.org/linux-iommu/20200817171558.325917-1-jean-philippe@linaro.org/
* Rebased onto v5.9-rc1. Moved to drivers/iommu/arm/arm-smmu-v3/ as a
  result.

v9: https://lore.kernel.org/linux-iommu/20200723145724.3014766-1-jean-philippe@linaro.org/
* Moved most of the SVA code to arm-smmu-v3-sva.c. 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 a bug when replacing a private ASID.

v8: https://lore.kernel.org/linux-iommu/20200618155125.1548969-1-jean-philippe@linaro.org/
* Split SVA series into three parts: page table sharing, I/O page
  faults, and additional features (DVM, VHE and HTTU).

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                        |   1 +
 drivers/iommu/arm/arm-smmu-v3/Makefile        |   5 +-
 arch/arm64/include/asm/mmu.h                  |   3 +
 arch/arm64/include/asm/mmu_context.h          |  11 +-
 drivers/iommu/arm/arm-smmu-v3/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 ++-
 .../iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c   | 488 ++++++++++
 drivers/iommu/arm/arm-smmu-v3/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                 |  86 ++
 MAINTAINERS                                   |   3 +-
 20 files changed, 1731 insertions(+), 735 deletions(-)
 create mode 100644 drivers/iommu/arm/arm-smmu-v3/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/arm-smmu-v3/arm-smmu-v3-sva.c
 create mode 100644 drivers/iommu/iommu-sva-lib.c

-- 
2.28.0