Hi, The guest pasid and aux-domain related code are dead code in current iommu subtree. As we have reached a consensus that all these features should be based on the new iommufd framework (which is under active development), the first part of this series removes and cleanups all the dead code.
The second part of this series refactors the iommu_domain by moving all domain specific ops from iommu_ops to a new iommu_domain_ops. This makes iommu_domain self-contained and represent the abstraction of an I/O translation table in the IOMMU subsystem. With different type of iommu_domain providing different set of ops, it's easier to support more types of I/O translation tables. Please help to review and comment. Best regards, baolu Change log: v1: https://lore.kernel.org/linux-iommu/20220124071103.2097118-1-baolu...@linux.intel.com/ v2: - https://lore.kernel.org/linux-iommu/20220208012559.1121729-1-baolu...@linux.intel.com/ - Remove apply_resv_region callback. - Remove domain argument from is_attach_deferred callback. - Convert all feasible instances of dev->bus->iommu_ops to dev_iommu_ops(). - Add the default_domain_ops (default iommu_domain_ops) in iommu_ops to avoid big churn in dozens of iommu drivers. - We discussed removing pgsize_bitmap in struct iommu_ops and initialize the domain field in domain_alloc(). Considering that domain_alloc() is being refactored, let's wait until the new domain_alloc() comes. - Various code/description refinement. - This version of series is available on github: https://github.com/LuBaolu/intel-iommu/commits/iommu-domain-ops-v2 v3: - https://lore.kernel.org/linux-iommu/20220214015538.2828933-1-baolu...@linux.intel.com/ - Remove ops check when dev_iommu_ops() is used. - This version of series is available on github: https://github.com/LuBaolu/intel-iommu/commits/iommu-domain-ops-v3 v4: - Remove WARN_ON() in dev_iommu_ops(); - Merge below two patches: iommu: Use right way to retrieve iommu_ops iommu: Use dev_iommu_ops() helper - This version of series is available on github: https://github.com/LuBaolu/intel-iommu/commits/iommu-domain-ops-v4 Lu Baolu (9): iommu/vt-d: Remove guest pasid related callbacks iommu: Remove guest pasid related interfaces and definitions iommu/vt-d: Remove aux-domain related callbacks iommu: Remove aux-domain related interfaces and iommu_ops iommu: Remove apply_resv_region drm/nouveau/device: Get right pgsize_bitmap of iommu_domain iommu: Use right way to retrieve iommu_ops iommu: Remove unused argument in is_attach_deferred iommu: Split struct iommu_ops include/linux/intel-iommu.h | 27 - include/linux/intel-svm.h | 12 - include/linux/iommu.h | 181 +++--- drivers/iommu/amd/amd_iommu.h | 3 +- drivers/iommu/intel/pasid.h | 4 - include/uapi/linux/iommu.h | 181 ------ .../drm/nouveau/nvkm/engine/device/tegra.c | 2 +- drivers/iommu/amd/iommu.c | 23 +- drivers/iommu/amd/iommu_v2.c | 2 +- drivers/iommu/apple-dart.c | 20 +- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 18 +- drivers/iommu/arm/arm-smmu/arm-smmu.c | 20 +- drivers/iommu/arm/arm-smmu/qcom_iommu.c | 18 +- drivers/iommu/exynos-iommu.c | 14 +- drivers/iommu/fsl_pamu_domain.c | 10 +- drivers/iommu/intel/debugfs.c | 3 +- drivers/iommu/intel/iommu.c | 540 +----------------- drivers/iommu/intel/pasid.c | 161 ------ drivers/iommu/intel/svm.c | 209 ------- drivers/iommu/iommu.c | 339 ++--------- drivers/iommu/ipmmu-vmsa.c | 18 +- drivers/iommu/msm_iommu.c | 30 +- drivers/iommu/mtk_iommu.c | 20 +- drivers/iommu/mtk_iommu_v1.c | 14 +- drivers/iommu/omap-iommu.c | 14 +- drivers/iommu/rockchip-iommu.c | 14 +- drivers/iommu/s390-iommu.c | 14 +- drivers/iommu/sprd-iommu.c | 18 +- drivers/iommu/sun50i-iommu.c | 18 +- drivers/iommu/tegra-gart.c | 18 +- drivers/iommu/tegra-smmu.c | 14 +- drivers/iommu/virtio-iommu.c | 14 +- 32 files changed, 305 insertions(+), 1688 deletions(-) -- 2.25.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
