[PATCH 0/3] Add GPU page fault query interface

[Alex Deucher <alexander.deucher@amd.com>]

This patch set adds support for an application to query GPU
page faults.  It's useful for debugging and there are
vulkan extensions that could make use of this.  Preliminary
user space code which uses this can be found here:
https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23238
https://gitlab.freedesktop.org/mesa/drm/-/merge_requests/298

Note, that I made a small change to the vmhub definition to
decouple it from how the kernel tracks vmhubs so that we have
a consistent user view even if we decide to add more vmhubs
like we recently did for gfx 9.4.3.

I've also pushed the changed to:
https://gitlab.freedesktop.org/agd5f/linux/-/commits/gpu_fault_info_ioctl


Alex Deucher (3):
  drm/amdgpu: add cached GPU fault structure to vm struct
  drm/amdgpu: cache gpuvm fault information for gmc7+
  drm/amdgpu: add new INFO ioctl query for the last GPU page fault

 drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c |  3 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 16 +++++++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c  | 45 +++++++++++++++++++++++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h  | 31 +++++++++++++++--
 drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c  |  3 ++
 drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c  |  3 ++
 drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c   |  3 ++
 drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c   |  3 ++
 drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c   | 11 +++---
 include/uapi/drm/amdgpu_drm.h           | 16 +++++++++
 10 files changed, 126 insertions(+), 8 deletions(-)

-- 
2.40.1