[Intel-gfx] [git pull] i915 fixes

[Eric Anholt]

On Fri, 11 Feb 2011 09:58:03 +0000, Chris Wilson <chris at chris-wilson.co.uk> wrote:
> Dave, a few more days have passed and we have a fresh batch of
> regression fixes.
> 
> The patch that is most notable is one for its absence:
> 
> commit 25ed6eb15ebc4472fb0e473666c0ef3bba87097f
> Author: Chris Wilson <chris at chris-wilson.co.uk>
> Date:   Wed Dec 22 11:37:09 2010 +0000
> 
>     agp/intel: Experiment with a 855GM GWB bit
> 
> is still sitting on drm-intel-staging just begging for someone with an
> 865g to give it the once over.

Tested-by: Eric Anholt <eric at anholt.net>

Tested on my 865G using openarena 5 times before and after, and x11perf
-aa24text 2 times before and after, with no stability or performance
change (and yes, it was stable).  I was concerned I wasn't getting good
enough coverage of the chipset flush path, so I also hacked the 2D
driver to upload the batch using bo_map; memcpy; bo_unmap instead of
bo_subdata, with no change.

before was ac66808814036b4c33dd98091b2176ae6157f1a8.
after was the cherry-pick on top of that.
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