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drm/amdgpu: stop evicting busy PDs/PTs

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Otherwise we won't be able to cleanly handle page faults.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2018-11-07 13:55:01 +01:00 • committed by Alex Deucher
parent 56753e73fb
commit 1bd4e4ca7b
1 changed files with 7 additions and 0 deletions
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7
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
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@ -1371,6 +1371,13 @@ static bool amdgpu_ttm_bo_eviction_valuable(struct ttm_buffer_object *bo,
struct dma_fence *f;
int i;
/* Don't evict VM page tables while they are busy, otherwise we can't
* cleanly handle page faults.
*/
if (bo->type == ttm_bo_type_kernel &&
!reservation_object_test_signaled_rcu(bo->resv, true))
return false;
/* If bo is a KFD BO, check if the bo belongs to the current process.
* If true, then return false as any KFD process needs all its BOs to
* be resident to run successfully