linux-kernel - RE: [PATCH] x86: limit mwait

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Message-ID: <1449F58C868D8D4E9C72945771150BDFD967EA@SAUSEXMB1.amd.com>
Date:	Thu, 5 Apr 2007 09:46:10 -0500
From:	"Langsdorf, Mark" <mark.langsdorf@....com>
To:	"Andi Kleen" <ak@...e.de>,
	"Herrmann3, Andreas" <Andreas.Herrmann3@....com>
cc:	linux-kernel@...r.kernel.org
Subject: RE: [PATCH] x86: limit mwait_idle to Intel CPUs

> > Commit 991528d7348667924176f3e29addea0675298944
> > introduced mwait_idle which is supposed to work
> > for Intel CPUs starting with Core Duo.
> > 
> > AMD Fam10 processors won't enter C1 on mwait.
> 
> Unfortunate. Will this be fixed?

Fam10 processors were not designed to enter C1 on mwait.
That feature will not be added for Fam10 processors.
 
-Mark Langsdorf
Operating Systems Research Center
AMD, Inc.


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