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<body><span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [snb] semaphores deadlock -- testing improved deadlock breaker"
href="https://bugs.freedesktop.org/show_bug.cgi?id=80709">bug 80709</a>
<br>
<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>NEEDINFO
</td>
<td>RESOLVED
</td>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
</td>
</tr></table>
<p>
<div>
<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [snb] semaphores deadlock -- testing improved deadlock breaker"
href="https://bugs.freedesktop.org/show_bug.cgi?id=80709#c8">Comment # 8</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [snb] semaphores deadlock -- testing improved deadlock breaker"
href="https://bugs.freedesktop.org/show_bug.cgi?id=80709">bug 80709</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>commit a0d036b074b4a5a933e37fcb9bdd6b3cc80a0387
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date: Sat Jul 19 12:40:42 2014 +0100
drm/i915: Reorder the semaphore deadlock check, again
commit 4be173813e57c7298103a83155c2391b5b167b4c
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date: Fri Jun 6 10:22:29 2014 +0100
drm/i915: Reorder semaphore deadlock check
did the majority of the work, but it missed one crucial detail:
The check for the unkickable deadlock on this ring must come after the
check whether the ring that we are waiting on has already passed its
target seqno.
Bugzilla: <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [snb] semaphores deadlock -- testing improved deadlock breaker"
href="show_bug.cgi?id=80709">https://bugs.freedesktop.org/show_bug.cgi?id=80709</a>
Tested-by: Stefan Huber <<a href="mailto:shuber@sthu.org">shuber@sthu.org</a>>
Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Cc: Mika Kuoppala <<a href="mailto:mika.kuoppala@intel.com">mika.kuoppala@intel.com</a>>
Cc: Jani Nikula <<a href="mailto:jani.nikula@intel.com">jani.nikula@intel.com</a>>
Cc: <a href="mailto:stable@vger.kernel.org">stable@vger.kernel.org</a>
Signed-off-by: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>></pre>
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