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<body><span class="vcard"><a class="email" href="mailto:martin.peres@free.fr" title="Martin Peres <martin.peres@free.fr>"> <span class="fn">Martin Peres</span></a>
</span> changed
<a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [CI][DRMTIP] igt@gem_mmap_gtt@hang - fail - Timed out waiting for children"
href="https://bugs.freedesktop.org/show_bug.cgi?id=109677">bug 109677</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;">Resolution</td>
<td>FIXED
</td>
<td>---
</td>
</tr>
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<td style="text-align:right;">Status</td>
<td>RESOLVED
</td>
<td>REOPENED
</td>
</tr></table>
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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [CI][DRMTIP] igt@gem_mmap_gtt@hang - fail - Timed out waiting for children"
href="https://bugs.freedesktop.org/show_bug.cgi?id=109677#c5">Comment # 5</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [CI][DRMTIP] igt@gem_mmap_gtt@hang - fail - Timed out waiting for children"
href="https://bugs.freedesktop.org/show_bug.cgi?id=109677">bug 109677</a>
from <span class="vcard"><a class="email" href="mailto:martin.peres@free.fr" title="Martin Peres <martin.peres@free.fr>"> <span class="fn">Martin Peres</span></a>
</span></b>
<pre>(In reply to Chris Wilson from <a href="show_bug.cgi?id=109677#c4">comment #4</a>)
<span class="quote">> I am ignoring the icl as that is not interesting (just another clock
> drift)...
>
> commit 43a8f684b6d1e16c6ecf918332f9b35686bf7edd (HEAD ->
> drm-intel-next-queued, drm-intel/drm-intel-next-queued)
> Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
> Date: Thu Feb 21 10:29:19 2019 +0000
>
> drm/i915: Reorder struct_mutex-vs-reset_lock in i915_gem_fault()
>
> Annoyingly, struct_mutex was not entirely eliminated from the reset
> pathway; for reasons of its own, intel_display_resume() requires
> struct_mutex to prepare the planes it already captured. To avoid the
> immediate problem of a deadlock between the struct_mutex and the reset
> srcu, we have to acquire the reset_lock before struct_mutex in
> i915_gem_fault(). Now any wait underneath struct_mutex will result us in
> having to forcibly reset all inflight rendering, less than ideal, but
> better than a deadlock (and will do for the short term).
>
> 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>>
> Reviewed-by: Mika Kuoppala <<a href="mailto:mika.kuoppala@linux.intel.com">mika.kuoppala@linux.intel.com</a>>
> Link:
> <a href="https://patchwork.freedesktop.org/patch/msgid/20190221102924.13442-1">https://patchwork.freedesktop.org/patch/msgid/20190221102924.13442-1</a>-
> <a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>
>
> Was the bug that should have been reported!</span >
Thanks for fixing this! However, since this bug was ICL-specific I'm re-opening
it, and we know we need to investigate this timer wonkyness...</pre>
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