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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [BAT][GDG] Failed assertion: gtt[1024*i] == ~i in igt@prime_vgem@basic-gtt"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102577#c5">Comment # 5</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [BAT][GDG] Failed assertion: gtt[1024*i] == ~i in igt@prime_vgem@basic-gtt"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102577">bug 102577</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=102577#c4">comment #4</a>)
<span class="quote">> For a similar issue within the kernel (i.e. not this test but others):
> commit c5ba5b24657e473b1c64b0a614b168a635a2c935
> Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
> Date: Thu Sep 7 19:45:20 2017 +0100
>
> drm/i915: Apply the GTT write flush for all !llc machines
>
> We also see the delayed GTT write issue on i915g/i915gm, so let's
> presume that it is a universal problem for all !llc machines, and that we
> just haven't yet noticed on g33, gen4 and gen5 machines.</span >
This does not seem to be sufficient...
<a href="https://intel-gfx-ci.01.org/cibuglog/index.html%3Faction_failures_history=-1&failures_test=igt@prime_vgem@basic-gtt&failures_machine=fi-gdg-551.html">https://intel-gfx-ci.01.org/cibuglog/index.html%3Faction_failures_history=-1&failures_test=igt@prime_vgem@basic-gtt&failures_machine=fi-gdg-551.html</a></pre>
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