drm/amdgpu: add flag to delay VM updates

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
index 8edf104..b6fce90 100644
--- a/include/uapi/drm/amdgpu_drm.h
+++ b/include/uapi/drm/amdgpu_drm.h
@@ -313,6 +313,9 @@
 #define AMDGPU_VA_OP_MAP			1
 #define AMDGPU_VA_OP_UNMAP			2
 
+/* Delay the page table update till the next CS */
+#define AMDGPU_VM_DELAY_UPDATE		(1 << 0)
+
 /* Mapping flags */
 /* readable mapping */
 #define AMDGPU_VM_PAGE_READABLE		(1 << 1)