Messages in this thread | | | Date | Fri, 28 Jul 2023 02:26:16 +0800 | Subject | [PATCH v1 0/7] Refactor the SMMU's CD table ownership | From | Michael Shavit <> |
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Hi all,
This series refactors stage 1 domains so that they describe a single CD entry. These entries are now inserted into a CD table that is owned by the arm_smmu_master instead of the domain. This is conceptually cleaner and unblocks other features, such as attaching domains with PASID (for unmanaged/dma domains).
This patch series was originally part of a larger patch series that implemented the set_dev_pasid callback for non-SVA domains but is now split into a distinct series.
This patch series is also available on gerrit with Jean's SMMU test engine patches cherry-picked on top for testing: https://linux-review.git.corp.google.com/c/linux/kernel/git/torvalds/linux/+/24729
Thanks, Michael Shavit
Changelog v1: * Replace s1_cfg with arm_smmu_ctx_desc_cfg representing the CD table * Assume that the CD table is owned by the SMMU master for most operations. This is forward-compatible with the nested patch series as these operations wouldn't be called when the installed CD table comes from nested domains. * Split off as a distinct patch series Split-off from: https://lore.kernel.org/all/20230621063825.268890-1-mshavit@google.com/
Michael Shavit (7): iommu/arm-smmu-v3: Move ctx_desc out of s1_cfg iommu/arm-smmu-v3: Replace s1_cfg with ctx_desc_cfg iommu/arm-smmu-v3: Encapsulate ctx_desc_cfg init in alloc_cd_tables iommu/arm-smmu-v3: move stall_enabled to the cd table iommu/arm-smmu-v3: Skip cd sync if CD table isn't active iommu/arm-smmu-v3: Refactor write_ctx_desc iommu/arm-smmu-v3: Move CD table to arm_smmu_master
.../iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 35 +++- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 167 ++++++++---------- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 39 ++-- 3 files changed, 123 insertions(+), 118 deletions(-)
base-commit: 0a8db05b571ad5b8d5c8774a004c0424260a90bd -- 2.41.0.585.gd2178a4bd4-goog
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