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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.html"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100144">bug 100144</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>---
</td>
<td>FIXED
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<td style="text-align:right;">Status</td>
<td>REOPENED
</td>
<td>RESOLVED
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<div>
<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [ILK][BAT] gem_exec_fence@await-hang-default.html"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100144#c8">Comment # 8</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [ILK][BAT] gem_exec_fence@await-hang-default.html"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100144">bug 100144</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 e6ba9992de6c63fe86c028b4876338e1cb7dac34
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date: Tue Apr 25 14:00:49 2017 +0100
drm/i915: Differentiate between sw write location into ring and last hw
read
We need to keep track of the last location we ask the hw to read up to
(RING_TAIL) separately from our last write location into the ring, so
that in the event of a GPU reset we do not tell the HW to proceed into
a partially written request (which can happen if that request is waiting
for an external signal before being executed).
v2: Refactor intel_ring_reset() (Mika)
Bugzilla: <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [ILK][BAT] gem_exec_fence@await-hang-default.html"
href="show_bug.cgi?id=100144">https://bugs.freedesktop.org/show_bug.cgi?id=100144</a>
Testcase: igt/gem_exec_fence/await-hang
Fixes: 821ed7df6e2a ("drm/i915: Update reset path to fix incomplete
requests")
Fixes: d55ac5bf97c6 ("drm/i915: Defer transfer onto execution timeline to
actual hw submission")
Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Cc: Tvrtko Ursulin <<a href="mailto:tvrtko.ursulin@intel.com">tvrtko.ursulin@intel.com</a>>
Cc: Mika Kuoppala <<a href="mailto:mika.kuoppala@intel.com">mika.kuoppala@intel.com</a>>
Link:
<a href="http://patchwork.freedesktop.org/patch/msgid/20170425130049.26147-1-chris@chris-wilson.co.uk">http://patchwork.freedesktop.org/patch/msgid/20170425130049.26147-1-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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