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<b><a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED --- - [HSW ULT bisected] Glbenchmark2.7.0 EgyptHDoffscreen performance reduce by 10%"
href="https://bugs.freedesktop.org/show_bug.cgi?id=67062#c12">Comment # 12</a>
on <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED --- - [HSW ULT bisected] Glbenchmark2.7.0 EgyptHDoffscreen performance reduce by 10%"
href="https://bugs.freedesktop.org/show_bug.cgi?id=67062">bug 67062</a>
from <span class="vcard"><a class="email" href="mailto:kenneth@whitecape.org" title="Kenneth Graunke <kenneth@whitecape.org>"> <span class="fn">Kenneth Graunke</span></a>
</span></b>
<pre>To clarify: Mesa currently doesn't set any MOCS overrides for LLC/eLLC. It
sets them to "Use the PTE values." (The recent MOCS additions only set L3
cacheability, which is different and separate.)
We're relying on the kernel to set everything to be LLC+eLLC WB-cacheable (or
WT cacheable where appropriate). In the future, we may try some heuristics to
play with ages, but it's hard to know what the right settings are, and there
are no concrete plans currently.</pre>
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