[Intel-gfx] [PATCH] drm/i915: blitter ring workaround for gen6

[Ben Widawsky]

On Mon, 3 Oct 2011 09:41:28 +0200
Daniel Vetter <daniel at ffwll.ch> wrote:

> On Sun, Oct 02, 2011 at 06:27:12PM -0700, Ben Widawsky wrote:
> > Found this through doc inspection. I don't have a failing test case that this
> > fixes, but the docs specify we need to do it in addition to the A0 workaround.
> 
> Can you confirm that the A0 workaround is really needed in addition to
> this new work-around on production-hw? Because I have patches lying around
> to kill that mess (no need don't carry around workarounds that only apply
> to pre-production hw after hw bringup) and your patch seems to extend that
> A0 workaround to all chips.
> -Daniel

It appears it is needed assuming I can make the patch do something
useful. The docs are so terribly vague about what this actually fixes,
or how it should be implemented.

By the way, it's not all chips, again once I get this to do something
useful, I'll clean things up.

Ben