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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 - [BAT][ILK] igt@gem_ringfill@basic-default-hang - fail assert - __gem_execbuf(fd, execbuf) == 0"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102888">bug 102888</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Resolution</td>
<td>---
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<td>FIXED
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<td style="text-align:right;">Status</td>
<td>NEW
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<td>RESOLVED
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [BAT][ILK] igt@gem_ringfill@basic-default-hang - fail assert - __gem_execbuf(fd, execbuf) == 0"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102888#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [BAT][ILK] igt@gem_ringfill@basic-default-hang - fail assert - __gem_execbuf(fd, execbuf) == 0"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102888">bug 102888</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>Hmm, I think this may have been implicitly fixed by
Author: Mika Kuoppala <<a href="mailto:mika.kuoppala@linux.intel.com">mika.kuoppala@linux.intel.com</a>>
Date: Tue Sep 19 17:41:28 2017 +0300
drm/i915: Stop engines before reset
On kbl evidence indicates that even if the hardware happily
tells us to proceed with reset, it really isn't ready.
Resetting a freely running batchbuffer after we have ack for readiness,
still can cause a system hang.
We also have similar experiences on older gens. So now
attempt to stop engines before proceeding for reset, on all
gens where we have a gpu reset. This has shown to improve reset
reliability and reduce the risk of losing the machine.
v2: Add fixme for wa (Joonas)
Testcase: igt/prime_busy/hang-* # kbl
Cc: Joonas Lahtinen <<a href="mailto:joonas.lahtinen@linux.intel.com">joonas.lahtinen@linux.intel.com</a>>
Cc: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Cc: Ville Syrjälä <<a href="mailto:ville.syrjala@linux.intel.com">ville.syrjala@linux.intel.com</a>>
Signed-off-by: Mika Kuoppala <<a href="mailto:mika.kuoppala@intel.com">mika.kuoppala@intel.com</a>>
Acked-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Acked-by: Joonas Lahtinen <<a href="mailto:joonas.lahtinen@linux.intel.com">joonas.lahtinen@linux.intel.com</a>>
Link:
<a href="https://patchwork.freedesktop.org/patch/msgid/20170919144128.25506-1-mika.kuoppala@intel.com">https://patchwork.freedesktop.org/patch/msgid/20170919144128.25506-1-mika.kuoppala@intel.com</a>
Time will tell.</pre>
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