drm/amdgpu: add VM generation token

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Instead of using the VRAM lost counter add a 64bit token which indicates
if a context or job is still valid to use.

Should the VRAM be lost or the page tables need re-creation the token will
change indicating that userspace needs to act and re-create the contexts
and re-submit the work.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Luben Tuikov <luben.tuikov@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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This commit is contained in:

Christian König 2023-04-19 15:17:57 +02:00 • committed by Alex Deucher

parent 55bf196f60

commit f88e295e90

7 changed files with 37 additions and 7 deletions

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2

drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c

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4

drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c

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2

drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.h

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4

drivers/gpu/drm/amd/amdgpu/amdgpu_job.c

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drivers/gpu/drm/amd/amdgpu/amdgpu_job.h

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26

drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c

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4

drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h

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