Re: [PATCH RFC 3/3] x86: use mwait for trigger API

From: Arjan van de Ven
Date: Sat Aug 16 2008 - 13:46:05 EST


On Sat, 16 Aug 2008 09:34:26 -0700
Jeremy Fitzhardinge <jeremy@xxxxxxxx> wrote:

> If the cpu implements monitor/mwait, use it for the trigger API.
>
> TODO: work out if any mwait hints are going to be useful here.


monitor/mwait is rather really expensive.. are we really sure we want
to use this?
(from an Intel cpu perspective the answer is very likely no; but I don't
know what AMD does here)


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