[PATCH v8 00/12] iommu: Shared Virtual Addressing for SMMUv3 (PT sharing part)

[Jean-Philippe Brucker <jean-philippe@linaro.org>]

Since v7 [1], I split the series into three parts to ease review. This
first one adds page table sharing to the SMMUv3 driver. The second one
adds support for I/O page faults through PRI and Stall, and the last one
adds additional and optional features (DVM, VHE and HTTU). SVA needs the
three parts to work. No significant change apart from that, I just
addressed the previous comments.

I'd rather everything went through the IOMMU tree but I'm assuming patch
1 will also go through the x86 tree as part of [2]. It is definitely
required by patch 3 which is required by patch 11. I don't know how this
kind of conflict is usually resolved, but if it's a problem I could
further shrink the series to only patches 4-10 this cycle.

[1] https://lore.kernel.org/linux-iommu/20200519175502.2504091-1-jean-philippe@linaro.org/
[2] https://lore.kernel.org/linux-iommu/1592418233-17762-1-git-send-email-fenghua.yu@intel.com/

Fenghua Yu (1):
  mm: Define pasid in mm

Jean-Philippe Brucker (11):
  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: 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                |   7 +
 drivers/iommu/Makefile               |   1 +
 arch/arm64/include/asm/mmu.h         |   1 +
 arch/arm64/include/asm/mmu_context.h |  11 +-
 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              |  95 +++-
 drivers/iommu/arm-smmu-v3.c          | 702 ++++++++++++++++++++++++++-
 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 +-
 17 files changed, 977 insertions(+), 63 deletions(-)
 create mode 100644 drivers/iommu/io-pgtable-arm.h
 create mode 100644 drivers/iommu/iommu-sva-lib.h
 create mode 100644 drivers/iommu/iommu-sva-lib.c

-- 
2.27.0