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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>
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<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [BAT] igt@* - Incomplete - GEM_BUG_ON(!dev_priv->gt.awake) - kernel BUG at drivers/gpu/drm/i915/intel_lrc.c:782!"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103410">bug 103410</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
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<td style="text-align:right;">Status</td>
<td>NEW
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<td>RESOLVED
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<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [BAT] igt@* - Incomplete - GEM_BUG_ON(!dev_priv->gt.awake) - kernel BUG at drivers/gpu/drm/i915/intel_lrc.c:782!"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103410#c8">Comment # 8</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [BAT] igt@* - Incomplete - GEM_BUG_ON(!dev_priv->gt.awake) - kernel BUG at drivers/gpu/drm/i915/intel_lrc.c:782!"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103410">bug 103410</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 4a118ecbe99c93cf9f9582e83a88d03f18d6cb84
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date: Mon Oct 23 22:32:36 2017 +0100
drm/i915: Filter out spurious execlists context-switch interrupts
Back in commit a4b2b01523a8 ("drm/i915: Don't mark an execlists
context-switch when idle") we noticed the presence of late
context-switch interrupts. We were able to filter those out by looking
at whether the ELSP remained active, but in commit beecec901790
("drm/i915/execlists: Preemption!") that became problematic as we now
anticipate receiving a context-switch event for preemption while ELSP
may be empty. To restore the spurious interrupt suppression, add a
counter for the expected number of pending context-switches and skip if
we do not need to handle this interrupt to make forward progress.</pre>
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