[Bug 83677] [HSW] GPU hang on ctx load

[bugzilla-daemon at freedesktop.org]

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

--- Comment #31 from Simon Farnsworth <simon at farnz.org.uk> ---
(In reply to comment #29)
> Still scratching my head over that BUG(). I've splattered a few more into
> #requests, if you could be so kind as to see if that changes the oops.
> 
> Meanwhile, current theory is that maybe it is the CS programming around the
> ctx switch that is the significant change in the shotgun. Still thinking.

I'm now testing your new #requests branch, as of

commit cdd8594d0f84e06f99cdd1e5b823b844c4249f6b
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Thu Sep 18 14:27:36 2014 +0100

    Revert "drm/i915: Enable full PPGTT on gen7"

    This reverts commit 83255c23abe91da047dc71e52be62c42dd4c04a1.

I'll let you know the results on Monday.

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