hat we can defer the actual updating of the fence register until we first need to access the object through the GTT, i.e. we can eliminate the stall on set_tiling. This is important as the userspace bo cache does not track the tiling status of active buffers which generate frequent stalls on gen3 when enabling tiling for an already bound buffer. Signed-off-by: Chris Wilson Reviewed-by: Daniel Vetter Ù