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<b><a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [bsw] execlists causes machine lockups"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93467#c10">Comment # 10</a>
on <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [bsw] execlists causes machine lockups"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93467">bug 93467</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>A contributing factor here is that ACPI on this system does not declare a HPET.
Ouch. I can force enable the HPET by hardcoding its address and that is
sufficient to prevent the lockups.
Conversely, passing clocksource=tsc should be enough then to reproduce the NMI
lockup on any system.</pre>
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