This splits the preparation works of the iommu and the Intel iommu driver out from the iommufd pasid attach/replace series. [1] To support domain replacement, the definition of the set_dev_pasid op needs to be enhanced. Meanwhile, the existing set_dev_pasid callbacks should be extended as well to suit the new definition. This series first prepares the Intel iommu set_dev_pasid op for the new definition, adds the missing set_dev_pasid support for nested domain, makes ARM SMMUv3 set_dev_pasid op to suit the new definition, and in the end enhances the definition of set_dev_pasid op. The AMD set_dev_pasid callback is extended to fail if the caller tries to do domain replacement to meet the new definition of set_dev_pasid op. AMD iommu driver would support it later per Vasant [2]. [1] https://lore.kernel.org/linux-iommu/20240412081516.31168-1-yi.l.liu@xxxxxxxxx/ [2] https://lore.kernel.org/linux-iommu/fa9c4fc3-9365-465e-8926-b4d2d6361b9c@xxxxxxx/ v3: - Add Kevin and Jason's r-b to patch 01, 02, 04, 05 and 06 of v2 - Add back the patch 03 of v1 to make the pasid setup helpers do all the pasid entry modification, hence the set_dev_pasid path is really rollback-less, which is spotted by Baolu. - Rename prepare_domain_attach_device() (Baolu) - Use unsigned int instead of u32 for flags (Baolu) - Remove a stale comment in arm_smmu_set_pasid (Will) v2: https://lore.kernel.org/linux-iommu/20240912130427.10119-1-yi.l.liu@xxxxxxxxx/ - Make ARM SMMUv3 set_dev_pasid op support domain replacement (Jason) - Drop patch 03 of v1 (Kevin) - Multiple tweaks in VT-d driver (Kevin) v1: https://lore.kernel.org/linux-iommu/20240628085538.47049-1-yi.l.liu@xxxxxxxxx/ Regards, Yi Liu Jason Gunthorpe (1): iommu/arm-smmu-v3: Make set_dev_pasid() op support replace Lu Baolu (1): iommu/vt-d: Add set_dev_pasid callback for nested domain Yi Liu (7): iommu: Pass old domain to set_dev_pasid op iommu/vt-d: Move intel_drain_pasid_prq() into intel_pasid_tear_down_entry() iommu/vt-d: Let intel_pasid_tear_down_entry() return pasid entry iommu/vt-d: Make pasid setup helpers support modifying present pasid entry iommu/vt-d: Rename prepare_domain_attach_device() iommu/vt-d: Make intel_iommu_set_dev_pasid() to handle domain replacement iommu: Make set_dev_pasid op support domain replacement drivers/iommu/amd/amd_iommu.h | 3 +- drivers/iommu/amd/pasid.c | 6 +- .../iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 5 +- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 12 +- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 2 +- drivers/iommu/intel/iommu.c | 128 ++++++++++++------ drivers/iommu/intel/iommu.h | 7 +- drivers/iommu/intel/nested.c | 3 +- drivers/iommu/intel/pasid.c | 82 ++++++----- drivers/iommu/intel/pasid.h | 9 +- drivers/iommu/intel/svm.c | 6 +- drivers/iommu/iommu.c | 3 +- include/linux/iommu.h | 5 +- 13 files changed, 163 insertions(+), 108 deletions(-) -- 2.34.1
