| Date | Thu, 12 Dec 2013 00:14:25 +0100 | From | Borislav Petkov <> | Subject | Re: 50 Watt idle power regression bisected to Linux-3.10 |
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On Wed, Dec 11, 2013 at 03:08:35PM -0800, H. Peter Anvin wrote: > So I would like to propose that we switch to using a percpu variable > which is a single cache line of nothing at all. It would only ever > be touched by MONITOR and for explicit wakeup. Hopefully that will > resolve this problem without the need for the CLFLUSH.
Yep, makes a lot of sense to me to have an exclusive (overloaded meaning here :-)) cacheline only for that. And, if it works, we'll save us the penalty from the CLFLUSH too, cool.
-- Regards/Gruss, Boris.
Sent from a fat crate under my desk. Formatting is fine. --
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