Re: [PATCH v3 00/14] iommu/amd: Add Generic IO Page Table Framework Support

[Suravee Suthikulpanit]

Hi Joerg,

Do you have any update on this series?

Thanks,
Suravee

On 11/2/20 10:16 AM, Suravee Suthikulpanit wrote:
> Joerg,
>
> You mentioned to remind you to pull this in to linux-next.
>
> Thanks,
> Suravee
>
> 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.
> >
> > Thanks,
> > Suravee
> >
> > Change from V2 (https://lore.kernel.org/lkml/835c0d46-ed96-9fbe-856a-777dcffac967@xxxxxxx/T/#t)
> >    - 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 into
> >      NULL pointer bug when calling free_io_pgtable_ops if not defined.
> >
> > Change from V1 (https://lkml.org/lkml/2020/9/23/251)
> >    - 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
> >      io_pgtable_ops
> >    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