drm/amdgpu: be explicit about cpu vram access for driver BOs (v2)

For kernel driver BOs, be explicit about whether we need
vram access up front.  This avoids unecessary migrations and
avoids using visible vram for buffers were it's not needed.

v2: line wrap fixes

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 42d1a22c1199..6ff6ae945794 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -244,7 +244,8 @@ static int amdgpu_vram_scratch_init(struct amdgpu_device *adev)
 
         if (adev->vram_scratch.robj == NULL) {
                 r = amdgpu_bo_create(adev, AMDGPU_GPU_PAGE_SIZE,
-                                     PAGE_SIZE, true, AMDGPU_GEM_DOMAIN_VRAM, 0,
+                                     PAGE_SIZE, true, AMDGPU_GEM_DOMAIN_VRAM,
+                                     AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED,
                                      NULL, &adev->vram_scratch.robj);
                 if (r) {
                         return r;