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| author | Michel Dänzer <michel.daenzer@amd.com> | 2016-03-28 03:53:02 (GMT) |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-03-28 15:55:38 (GMT) |
| commit | 104ece975746d94b8276cd7f38d6b5c056d700b5 (patch) | |
| tree | 1d53b8183f2510bdd5b36f86d0955291e0a4719e /drivers/gpu/drm/amd/amdgpu | |
| parent | e1a575ada8d2a3c3f107fdd12ac9215f983a7c80 (diff) | |
| download | linux-104ece975746d94b8276cd7f38d6b5c056d700b5.tar.xz | |
drm/amdgpu: Don't move pinned BOs
The purpose of pinning is to prevent a buffer from moving.
Reviewed-by: Christian König <christian.koenig@amd.com>
Tested-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 6 |
2 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index 151a2d4..56d1458 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -608,6 +608,10 @@ int amdgpu_bo_fault_reserve_notify(struct ttm_buffer_object *bo) if ((offset + size) <= adev->mc.visible_vram_size) return 0; + /* Can't move a pinned BO to visible VRAM */ + if (abo->pin_count > 0) + return -EINVAL; + /* hurrah the memory is not visible ! */ amdgpu_ttm_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_VRAM); lpfn = adev->mc.visible_vram_size >> PAGE_SHIFT; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index 0f42b1a..9d3341d 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -384,9 +384,15 @@ static int amdgpu_bo_move(struct ttm_buffer_object *bo, struct ttm_mem_reg *new_mem) { struct amdgpu_device *adev; + struct amdgpu_bo *abo; struct ttm_mem_reg *old_mem = &bo->mem; int r; + /* Can't move a pinned BO */ + abo = container_of(bo, struct amdgpu_bo, tbo); + if (WARN_ON_ONCE(abo->pin_count > 0)) + return -EINVAL; + adev = amdgpu_get_adev(bo->bdev); if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) { amdgpu_move_null(bo, new_mem); |