[PATCH] radeon/exa: Always use a scratch surface for UTS to vram

[Michel Dänzer]

On Mon, 2014-01-06 at 09:57 -0500, Alex Deucher wrote:
> If we don't, we may hit a buffer that crosses the
> visible vram boundary resulting in a sigbus when the
> CPU accesses the buffer beyond the PCI aperture.
> This will introduce an extra copy in certain cases.
> 
> This is based on Michel's patch from bug 44099 updated
> for all asic families.
> 
> Bug:
> https://bugs.freedesktop.org/show_bug.cgi?id=44099
> 
> Signed-off-by: Alex Deucher <alexander.deucher at amd.com>

Reviewed-by: Michel Dänzer <michel.daenzer at amd.com>


-- 
Earthling Michel Dänzer            |                  http://www.amd.com
Libre software enthusiast          |                Mesa and X developer