[PATCH v1 00/20] iommu: Introduce and roll out test_dev domain op

[Nicolin Chen]

Add a new test_dev domain op for drivers to run a compatibility test prior
to the actual attachment at the driver level. Any incompatible attachment
will be rejected early, allowing the iommu core to postpone any concurrent
attachment during a device reset state.

This is a preparatory series for new iommu_dev_reset APIs:
https://lore.kernel.org/all/cover.1756682135.git.nicolinc@nvidia.com/

The change is a must to keep attach uAPI behavior consistent.

This is on github:
https://github.com/nicolinc/iommufd/tree/iommu_test_dev-v1

Nicolin Chen (20):
  iommu: Lock group->mutex in iommu_deferred_attach()
  iommu: Introduce a test_dev domain op and an internal helper
  iommu/arm-smmu-v3: Implement arm_smmu_domain_test_dev
  iommu/intel: Implement test_dev callbacks to domain ops
  iommu/amd: Implement test_dev callbacks to domain ops
  iommu/arm-smmu: Implement arm_smmu_test_dev
  iommu/qcom_iommu: Implement test_dev callbacks to domain ops
  iommu/riscv: Implement riscv_iommu_test_paging_domain
  iommu/mkt_iommu: Implement mtk_iommu_test_device
  iommu/apple-dart: Implement test_dev callbacks to domain ops
  iommu/ipmmu-vmsa: Implement ipmmu_domain_test_device
  iommu/sun50i-iommu: Implement sun50i_iommu_domain_test_device
  iommu/rockchip-iommu: Implement rk_iommu_identity_test_dev
  iommu/msm_iommu: Implement msm_iommu_domain_test_dev
  iommu/fsl_pamu_domain: Implement fsl_pamu_domain_test_device
  iommu/omap-iommu: Implement omap_iommu_domain_test_dev
  iommu/s390-iommu: Implement s390_iommu_domain_test_device
  iommufd/selftest: Implement mock_domain_nop_test
  iommu/virtio-iommu: Implement viommu_domain_test_dev
  iommu/tegra-smmu: Implement tegra_smmu_domain_test_dev

 drivers/iommu/amd/amd_iommu.h                 |   3 -
 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h   |   2 +
 include/linux/iommu.h                         |  17 ++-
 drivers/iommu/amd/iommu.c                     |  27 ++--
 drivers/iommu/amd/pasid.c                     |  29 ++--
 drivers/iommu/apple-dart.c                    |  50 +++++--
 .../arm/arm-smmu-v3/arm-smmu-v3-iommufd.c     |   6 +-
 .../iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c   |   4 +-
 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c   | 113 ++++++++++------
 drivers/iommu/arm/arm-smmu/arm-smmu.c         | 116 +++++++++-------
 drivers/iommu/arm/arm-smmu/qcom_iommu.c       |  46 +++++--
 drivers/iommu/fsl_pamu_domain.c               |  50 +++++--
 drivers/iommu/intel/iommu.c                   |  66 ++++++----
 drivers/iommu/intel/nested.c                  |  29 ++--
 drivers/iommu/intel/svm.c                     |  11 +-
 drivers/iommu/iommu.c                         | 124 +++++++++++++-----
 drivers/iommu/iommufd/selftest.c              |  45 +++++--
 drivers/iommu/ipmmu-vmsa.c                    |  38 ++++--
 drivers/iommu/msm_iommu.c                     |  31 ++++-
 drivers/iommu/mtk_iommu.c                     |  17 ++-
 drivers/iommu/omap-iommu.c                    |  41 +++---
 drivers/iommu/riscv/iommu.c                   |  16 ++-
 drivers/iommu/rockchip-iommu.c                |  18 ++-
 drivers/iommu/s390-iommu.c                    |  22 +++-
 drivers/iommu/sun50i-iommu.c                  |  16 ++-
 drivers/iommu/tegra-smmu.c                    |  23 ++--
 drivers/iommu/virtio-iommu.c                  |  16 ++-
 27 files changed, 671 insertions(+), 305 deletions(-)

-- 
2.43.0