drm/amdgpu: add TOPDOWN flag to the whole vram

need to decrease visible vram usage by default.

Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: monk.liu <monk.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index 1a7708f365f3..0d524384ff79 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -132,6 +132,8 @@ static void amdgpu_ttm_placement_init(struct amdgpu_device *adev,
                 placements[c].fpfn = 0;
                 placements[c++].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED |
                         TTM_PL_FLAG_VRAM;
+                if (!(flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED))
+                        placements[c - 1].flags |= TTM_PL_FLAG_TOPDOWN;
         }
 
         if (domain & AMDGPU_GEM_DOMAIN_GTT) {