[Bug 64725] [snb regression] Hung GPU when resuming from suspend-to-disk on kernel 3.8

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=64725

--- Comment #3 from Chris Wilson <chris at chris-wilson.co.uk> ---
In v3.8, there are a few scary patches that tried to speed up resume, and in
particular started to diverge the suspend/hibernate paths - such as

commit 1abd02e2dd7e0bd577000301fb2fd47780637387
Author: Jesse Barnes <jbarnes at virtuousgeek.org>
Date:   Fri Nov 2 11:14:02 2012 -0700

    drm/i915: don't rewrite the GTT on resume v4

Equally there are quite a few new TLB invalidate w/a in v3.8 which might be
missed for the hibernate path. If you have time for a bisect, that would be
very useful. I've been successfully hibernating my own f18 SNB - but that has
been on 3.9 for some time.

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