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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [CI]gem_mmap_gtt/coherency failing assertion cpu[x] == i"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100587#c30">Comment # 30</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [CI]gem_mmap_gtt/coherency failing assertion cpu[x] == i"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100587">bug 100587</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>(In reply to Chris Wilson from <a href="show_bug.cgi?id=100587#c29">comment #29</a>)
<span class="quote">> Different test; hosts that don't show the coherency issue in the specific
> test for it => different bug.</span >
For example, our previous issue was that the indirect write via the GGTT was
being buffered, but in this case it's the WC writes that aren't immediately
visible. The first half of the loop (writing into GTT, reading via WC) works
without any sync.
Argh!</pre>
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