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drm/amdgpu: validate shadow before restoring from it

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Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Roger.He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Roger.He
2017-04-21 13:08:43 +08:00
committed by Alex Deucher
parent 4a9ed1009b
commit 8252131639
3 changed files with 34 additions and 0 deletions
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21
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
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@@ -543,6 +543,27 @@ err:
return r;
}
int amdgpu_bo_validate(struct amdgpu_bo *bo)
{
uint32_t domain;
int r;
if (bo->pin_count)
return 0;
domain = bo->prefered_domains;
retry:
amdgpu_ttm_placement_from_domain(bo, domain);
r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
if (unlikely(r == -ENOMEM) && domain != bo->allowed_domains) {
domain = bo->allowed_domains;
goto retry;
}
return r;
}
int amdgpu_bo_restore_from_shadow(struct amdgpu_device *adev,
struct amdgpu_ring *ring,
struct amdgpu_bo *bo,