drm/amdgpu: implement workaround for sdma dcc corruption

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For unknown reasons, on gfx12 using multiple entities can causes
random corruption of BOs with DCC.
This workaround seems to prevent the issue until the root cause
is understood and fixed.

Link: https://gitlab.freedesktop.org/drm/amd/-/work_items/5663
Fixes: 3a6f6eeb3d ("drm/amdgpu: give ttm entities access to all the sdma scheds")
Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit cd647796ac)
Cc: stable@vger.kernel.org

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Pierre-Eric Pelloux-Prayer 2026-09-24 09:37:28 +02:00 • committed by Alex Deucher

parent 0e4101c11a

commit eaeac1498b

1 changed files with 7 additions and 1 deletions

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8

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

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