b19482d7ce
As pwrite does not use the fence for its GTT access, and may even go through a secondary interface avoiding the main VMA, we cannot treat the write as automatically invalidated by the hardware and so we require ORIGIN_CPU frontbufer invalidate/flushes. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/20160818161718.27187-4-chris@chris-wilson.co.uk Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>