You mentioned to remind you to pull this in to linux-next.


On 10/4/20 8:45 AM, Suravee Suthikulpanit wrote:
The framework allows callable implementation of IO page table.
This allows AMD IOMMU driver to switch between different types
of AMD IOMMU page tables (e.g. v1 vs. v2).

This series refactors the current implementation of AMD IOMMU v1 page table
to adopt the framework. There should be no functional change.
Subsequent series will introduce support for the AMD IOMMU v2 page table.


Change from V2 
   - Patch 2/14: Introduce helper function io_pgtable_cfg_to_data.
   - Patch 13/14: Put back the struct iommu_flush_ops since patch v2 would run 
     NULL pointer bug when calling free_io_pgtable_ops if not defined.

Change from V1 (
   - Do not specify struct io_pgtable_cfg.coherent_walk, since it is
     not currently used. (per Robin)
   - Remove unused struct iommu_flush_ops.  (patch 2/13)
   - Move amd_iommu_setup_io_pgtable_ops to iommu.c instead of io_pgtable.c
     patch 13/13)

Suravee Suthikulpanit (14):
   iommu/amd: Re-define amd_iommu_domain_encode_pgtable as inline
   iommu/amd: Prepare for generic IO page table framework
   iommu/amd: Move pt_root to to struct amd_io_pgtable
   iommu/amd: Convert to using amd_io_pgtable
   iommu/amd: Declare functions as extern
   iommu/amd: Move IO page table related functions
   iommu/amd: Restructure code for freeing page table
   iommu/amd: Remove amd_iommu_domain_get_pgtable
   iommu/amd: Rename variables to be consistent with struct
   iommu/amd: Refactor fetch_pte to use struct amd_io_pgtable
   iommu/amd: Introduce iommu_v1_iova_to_phys
   iommu/amd: Introduce iommu_v1_map_page and iommu_v1_unmap_page
   iommu/amd: Introduce IOMMU flush callbacks
   iommu/amd: Adopt IO page table framework

  drivers/iommu/amd/Kconfig           |   1 +
  drivers/iommu/amd/Makefile          |   2 +-
  drivers/iommu/amd/amd_iommu.h       |  22 +
  drivers/iommu/amd/amd_iommu_types.h |  43 +-
  drivers/iommu/amd/io_pgtable.c      | 564 ++++++++++++++++++++++++
  drivers/iommu/amd/iommu.c           | 646 +++-------------------------
  drivers/iommu/io-pgtable.c          |   3 +
  include/linux/io-pgtable.h          |   2 +
  8 files changed, 691 insertions(+), 592 deletions(-)
  create mode 100644 drivers/iommu/amd/io_pgtable.c

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