[PATCH v4 0/4] Add GPU page fault query interface
Christian König
ckoenig.leichtzumerken at gmail.com
Mon Oct 2 10:22:25 UTC 2023
Am 28.09.23 um 22:06 schrieb Alex Deucher:
> 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
>
> Open question, currently we just expose the raw GPU fault status
> register value for each GPU so UMDs need GPU specific knowlege to decode
> it, although it's largely the same across generations. One option would be to
> translate to a generic GPU independent fault status. Opinions?
Lot of work for not much gain. I think we should stick with this for now.
Reviewed-by: Christian König <christian.koenig at amd.com>
>
> v2:
> - Fix spelling typos noted by Guchun
> v3:
> - Add locking in IOCTL query
> - Only update cache if fault status is valid
> v4:
> - Rebase and resend
>
> Alex Deucher (4):
> 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
> drm/amdgpu: refine fault cache updates
>
> drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 3 +-
> drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 20 ++++++++++
> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 50 +++++++++++++++++++++++++
> 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, 135 insertions(+), 8 deletions(-)
>
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