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

[Felix Kuehling]

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

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2.7.4