[Bug 63921] [snb] GTT mapping fails after GPU hang

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=63921

--- Comment #34 from Chris Wilson <chris at chris-wilson.co.uk> ---
That patch shouldn't itself cause a lockup - so I wonder if the system would
have eventually locked up anyway if X didn't die first. But that the patch
eliminates the false SIGBUS and failed mmaps is a good sign! :)

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