[Bug 93467] [bsw] execlists causes machine lockups

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Thu Mar 10 16:14:57 UTC 2016


https://bugs.freedesktop.org/show_bug.cgi?id=93467

--- Comment #10 from Chris Wilson <chris at chris-wilson.co.uk> ---
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.

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