On Sun, Feb 12, 2017 at 05:20:01PM +0000, Chris Wilson wrote:
> The signal threads may be running concurrently with the GPU reset. The
> completion from the GPU run asynchronous with the reset and two threads
> may see different snapshots of the state, and the signaler may mark a
> request as complete as we try to reset it. We don't tolerate 2 different
> views of the same state and complain if we try to mark a request as
> failed if it is already complete. Disable the signal threads during
> reset to prevent this conflict (even though the conflict implies that
> the state we resetting to is invalid, we have already made our
> decision!).
> 
> References: https://bugs.freedesktop.org/show_bug.cgi?id=99671
> Signed-off-by: Chris Wilson <[email protected]>
> Cc: Mika Kuoppala <[email protected]>
> Cc: Tvrtko Ursulin <[email protected]>
Reviewed-by: Mika Kuoppala <[email protected]>
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre
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