[PATCH 0/8] Retry page fault handling for Vega10

[Felix Kuehling]

Thanks for the reviews. I rebased this on amd-staging-drm-next, retested
and submitted.

Christian, do you want to do some graphics PASID and VMFault work on top
of that? I think I'll be working on more KFD upstreaming this week and
maybe look at this subject again next week.

Regards,
  Felix


On 2017-09-12 07:05 PM, Felix Kuehling wrote:
> Rebased on adeucher/amd-staging-4.13 and tested on Vega10 (graphics)
> and Kaveri (KFD). Meaningful graphics tests with retry faults enabled
> will only be possible after PASID support is added to amdgpu_cs.
>
> The chash table was moved to drivers/gpu/drm/amd/lib for now but is
> ready to move to lib if needed. I have not got any feedback on LKLM
> and I don't want that to hold up the patch series.
>
> TODO:
> * Finish upstreaming KFD
> * Allocate PASIDs for graphics contexts
> * Setup VMID-PASID mapping during graphics command submission
> * Confirm that graphics page faults have the correct PASID in the IV
>
>
> Felix Kuehling (8):
>   drm/amdgpu: Fix error handling in amdgpu_vm_init
>   drm/amdgpu: Add PASID management
>   drm/radeon: Add PASID manager for KFD
>   drm/amdkfd: Separate doorbell allocation from PASID
>   drm/amdkfd: Use PASID manager from KGD
>   drm/amdgpu: Add prescreening stage in IH processing
>   drm/amd: Closed hash table with low overhead
>   drm/amdgpu: Track pending retry faults in IH and VM (v2)
>
>  drivers/gpu/drm/Kconfig                           |   3 +
>  drivers/gpu/drm/Makefile                          |   1 +
>  drivers/gpu/drm/amd/amdgpu/amdgpu.h               |   2 +
>  drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c |   2 +
>  drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c |   2 +
>  drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c            |  82 +++
>  drivers/gpu/drm/amd/amdgpu/amdgpu_ih.h            |  12 +
>  drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c           |   2 +-
>  drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c            |  84 ++-
>  drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h            |  21 +-
>  drivers/gpu/drm/amd/amdgpu/cik_ih.c               |  14 +
>  drivers/gpu/drm/amd/amdgpu/cz_ih.c                |  14 +
>  drivers/gpu/drm/amd/amdgpu/iceland_ih.c           |  14 +
>  drivers/gpu/drm/amd/amdgpu/si_ih.c                |  14 +
>  drivers/gpu/drm/amd/amdgpu/tonga_ih.c             |  14 +
>  drivers/gpu/drm/amd/amdgpu/vega10_ih.c            |  90 ++++
>  drivers/gpu/drm/amd/amdkfd/kfd_device.c           |   7 -
>  drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c         |  50 +-
>  drivers/gpu/drm/amd/amdkfd/kfd_module.c           |   6 -
>  drivers/gpu/drm/amd/amdkfd/kfd_pasid.c            |  90 ++--
>  drivers/gpu/drm/amd/amdkfd/kfd_priv.h             |  10 +-
>  drivers/gpu/drm/amd/amdkfd/kfd_process.c          |   6 +
>  drivers/gpu/drm/amd/include/kgd_kfd_interface.h   |   6 +
>  drivers/gpu/drm/amd/include/linux/chash.h         | 358 +++++++++++++
>  drivers/gpu/drm/amd/lib/Kconfig                   |  27 +
>  drivers/gpu/drm/amd/lib/Makefile                  |  11 +
>  drivers/gpu/drm/amd/lib/chash.c                   | 622 ++++++++++++++++++++++
>  drivers/gpu/drm/radeon/radeon_kfd.c               |  31 ++
>  28 files changed, 1504 insertions(+), 91 deletions(-)
>  create mode 100644 drivers/gpu/drm/amd/include/linux/chash.h
>  create mode 100644 drivers/gpu/drm/amd/lib/Kconfig
>  create mode 100644 drivers/gpu/drm/amd/lib/Makefile
>  create mode 100644 drivers/gpu/drm/amd/lib/chash.c
>