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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 - [ILK] [BAT] gem_exec_fence@await-hang-default hangs on CI"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99733">bug 99733</a>
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<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>NEW
</td>
<td>RESOLVED
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<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
</td>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [ILK] [BAT] gem_exec_fence@await-hang-default hangs on CI"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99733#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [ILK] [BAT] gem_exec_fence@await-hang-default hangs on CI"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99733">bug 99733</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 fe3288b5da2c1286a7aac1fb1b2234caa752a81b
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date: Sun Feb 12 17:20:01 2017 +0000
drm/i915: Park the breadcrumbs signaler across a GPU reset
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!).
Bugzilla: <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [ILK] [BAT] gem_exec_fence@await-hang-default hangs on CI"
href="show_bug.cgi?id=99733">https://bugs.freedesktop.org/show_bug.cgi?id=99733</a>
References: <a class="bz_bug_link
bz_status_NEW "
title="NEW - [v4.10] GPU HANG: ecode 6:0:0xbd69ffff, in compiz [2609], reason: Ring hung, action: reset"
href="show_bug.cgi?id=99671">https://bugs.freedesktop.org/show_bug.cgi?id=99671</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: Tvrtko Ursulin <<a href="mailto:tvrtko.ursulin@intel.com">tvrtko.ursulin@intel.com</a>>
Link:
<a href="http://patchwork.freedesktop.org/patch/msgid/20170212172002.23072-4-chris@chris-wilson.co.uk">http://patchwork.freedesktop.org/patch/msgid/20170212172002.23072-4-chris@chris-wilson.co.uk</a>
Reviewed-by: Mika Kuoppala <<a href="mailto:mika.kuoppala@intel.com">mika.kuoppala@intel.com</a>></pre>
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