[Intel-gfx] [PATCH] drm/i915: intel hw has only one gpu write domain

[Chris Wilson]

On Sun, 14 Mar 2010 12:18:15 +0100, Daniel Vetter <daniel.vetter at ffwll.ch> wrote:
> It therefore holds that all objects on the gpu_write_domain are
> in this single write domain. Drop an if checking for the write
> domain in process_flushing_list.
[snip]
> 
> The idea for this patch emerged from a discussion with Chris Wilson.
> 
> Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>

Indeed, I had been contemplating a very similar patch and had been trying
to concoct scenarios which might have multiple GPU write domains. I
suspect GPU memory that is not mappable by the CPU could conceivably be a
new domain, but I think will be possible without such a construct.

Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
-ickle

-- 
Chris Wilson, Intel Open Source Technology Centre