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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 - [CI][BAT] Value[0/2] mismatch, (overwrite with wc) wrote [gtt] 7b87261d read [cpu] 8478d9e2"
href="https://bugs.freedesktop.org/show_bug.cgi?id=107435">bug 107435</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
</td>
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<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
</td>
</tr></table>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [CI][BAT] Value[0/2] mismatch, (overwrite with wc) wrote [gtt] 7b87261d read [cpu] 8478d9e2"
href="https://bugs.freedesktop.org/show_bug.cgi?id=107435#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [CI][BAT] Value[0/2] mismatch, (overwrite with wc) wrote [gtt] 7b87261d read [cpu] 8478d9e2"
href="https://bugs.freedesktop.org/show_bug.cgi?id=107435">bug 107435</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 21eb1850fa0bd0a9b729bf3708da78888433027f (HEAD -> drm-intel-next-queued,
drm-intel/for-linux-next, drm-intel/drm-intel-next-queued)
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date: Wed Aug 1 11:47:21 2018 +0100
drm/i95: Mark GGTT as incoherent for gen10+
The evidence suggests that we need to start treating writes via GGTT as
incoherent for gen10+, that is that they are internally buffered and not
immediately visible via a read along a different physical path.
Bugzilla: <a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI][BAT] igt@drv_selftest@live_objects - dmesg-fail - igt_partial_tiling failed with error -22"
href="show_bug.cgi?id=107398">https://bugs.freedesktop.org/show_bug.cgi?id=107398</a>
Bugzilla: <a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI][BAT] igt@drv_selftest@live_coherency - dmesg-fail - Value[0/7] mismatch, (overwrite with cpu) wrote [gtt] a3b52fe8 read [cpu] 5c4ad017 (inverse 5c4ad017), at offset 5dc"
href="show_bug.cgi?id=107400">https://bugs.freedesktop.org/show_bug.cgi?id=107400</a>
Bugzilla: <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [CI][BAT] Value[0/2] mismatch, (overwrite with wc) wrote [gtt] 7b87261d read [cpu] 8478d9e2"
href="show_bug.cgi?id=107435">https://bugs.freedesktop.org/show_bug.cgi?id=107435</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@linux.intel.com">mika.kuoppala@linux.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/20180801104721.4030-1-chris@chris-wilson.co.uk">https://patchwork.freedesktop.org/patch/msgid/20180801104721.4030-1-chris@chris-wilson.co.uk</a></pre>
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