drm/amdgpu: Protect the amdgpu_bo_list list with a mutex v2

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Protect the struct amdgpu_bo_list with a mutex. This is used during command
submission in order to avoid buffer object corruption as recorded in
the link below.

v2 (chk): Keep the mutex looked for the whole CS to avoid using the
	  list from multiple CS threads at the same time.

Suggested-by: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <Alexander.Deucher@amd.com>
Cc: Andrey Grodzovsky <Andrey.Grodzovsky@amd.com>
Cc: Vitaly Prosyak <Vitaly.Prosyak@amd.com>
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2048
Signed-off-by: Luben Tuikov <luben.tuikov@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Tested-by: Luben Tuikov <luben.tuikov@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Luben Tuikov 2022-07-20 15:04:18 -04:00 • committed by Alex Deucher

parent 4528c18605

commit 5df79aeb6e

3 changed files with 19 additions and 4 deletions

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3

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

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4

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

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16

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

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