[Intel-gfx] [PATCH 0/4] drm/i915: Gen2/3 C3 wakeup stuff

[Chris Wilson]

On Wed, May 28, 2014 at 12:46:12PM +0300, Ville Syrjälä wrote:
> On Wed, May 28, 2014 at 09:19:05AM +0100, Chris Wilson wrote:
> > The slow vblank delivery issue remains iirc though.
> 
> Yeah supposedly that's the case on gen3. This series does fix my 855
> though. Unfortunately I've not come across any gen3 machines that
> suffe from this. I tried it on Mika's gen3 which IIRC did support C3,
> but vblank interrupts got delivered in a timely fashion regardless of
> the AGPBUSY bit.

I do have an affected 915gm + pentium-IIIm (iirc), I think I tested the
patches at the time (to no avail), and will certainly do so once these
are upstream. Just takes a while as the CPU isn't even the bottleneck on
that machine!
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre