[Intel-gfx] [PATCH] drm/i915: Round-up GTT allocations for unfenced surfaces to the next tile row

[Daniel Vetter]

On Sat, Mar 26, 2011 at 08:52:31AM +0000, Chris Wilson wrote:
> However, I'm not sure if this truly prevents the corruption on i8xx with
> 2.14.0. Can somebody break out an old machine and test?

It won't (assuming I correctly diagnosed the problem): Corruptions happen
because i8xx uses copies of the scratch page in the lower-left corner.
Only extending the size of the allocation prevents that. What this patch
does though is preventing corruptions in the immediately following bo.
Dunno whether that's worth to fix given that people rather quickly
complain about visual corruptions, but seem to somewhat accept crashy i8xx
systems as a fact of life.
-Daniel
-- 
Daniel Vetter
Mail: daniel at ffwll.ch
Mobile: +41 (0)79 365 57 48