On Wed, Aug 16, 2023 at 09:18:40PM +0800, Michael Shavit wrote:
 

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.googlesource.com/c/linux/kernel/git/torvalds/linux/+/24770/9

Thanks,
Michael Shavit

Changes in v6:
- Undo removal of s1fmt and renaming of s1cdmax
- Unwind the loop in amr_smmu_write_ctx_desc_devices to NULL out the CD
  entries we succesfully wrote on failure.
- Add a comment clarifying the different usages of
  amr_smmu_write_ctx_desc_devices
- Grab the asid lock while writing the RID CD to prevent a race with
  SVA.
- Add the device to the devices list before writing the CD to the table
  and installing the CD table.

Though there's a thing in PATCH-6 that I couldn't fully understand
yet, SVA/ATS sanity works with the series. So,

Tested-by: Nicolin Chen <redacted>

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