[PATCH v2 00/10] iommu/amd: Improve domain allocator and device attach code path

[Vasant Hegde <vasant.hegde@amd.com>]

This series aims to improve domain allocator and attach device code path.
  - Replace custom domain ID allocator with IDA allocator.
  - Improve protection domain data structure
  - Improve attach device code path and replace dev_data spinlock with mutex

This series is on top of iommu/next (Commit 72e7bac4135e) and a minor patch
to fix protection_domain_free() code path [1].

[1] https://lore.kernel.org/linux-iommu/23a7c339-a7ba-447e-a4fa-935250f771eb@amd.com/T/#m870159022b8e1141d6b9c6ef87c6ee6821d0428d

This is also available at github :
  https://github.com/AMDESE/linux-iommu/tree/iommu_rework_attach_dev_v2


Changes from v1 -> v2:
  - Rebased on top of iommu/next
  - Minor fixes.


V1 : https://lore.kernel.org/linux-iommu/20240828134317.6239-1-vasant.hegde@amd.com/T/#t

-Vasant


Vasant Hegde (10):
  iommu/amd: Use ida interface to manage protection domain ID
  iommu/amd: Remove protection_domain.dev_cnt variable
  iommu/amd: xarray to track protection_domain->iommu list
  iommu/amd: Remove unused amd_iommus variable
  iommu/amd: Do not detach devices in domain free path
  iommu/amd: Reduce domain lock scope in attach device path
  iommu/amd: Rearrange attach device code
  iommu/amd: Convert dev_data lock from spinlock to mutex
  iommu/amd: Reorder attach device code
  iommu/amd: Improve amd_iommu_release_device()

 drivers/iommu/amd/amd_iommu.h       |   2 +
 drivers/iommu/amd/amd_iommu_types.h |  20 +-
 drivers/iommu/amd/init.c            |  35 +--
 drivers/iommu/amd/iommu.c           | 349 +++++++++++++---------------
 4 files changed, 188 insertions(+), 218 deletions(-)

-- 
2.31.1