[Intel-gfx] [PATCH] drm/i915: Use mmio flips harder

[Chris Wilson]

On Wed, Nov 26, 2014 at 05:25:32PM +0100, Daniel Vetter wrote:
> Somehow (i.e. purely experimental evidence from users out there in the
> wild) using CS flips seems to be implicated in hw context switch
> hangs.
> 
> I have no idea why, but let's just try this out.
> 
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=78960

> References: https://bugs.freedesktop.org/show_bug.cgi?id=83677

I tried using mmio flips exclusively on Simon's testcase (which is
perphaps the most brutal as it still dies with the oneline fix that
worked on the chromeboox).
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre