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

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Date:	Thu, 5 Apr 2007 16:24:45 +0200
From:	Andi Kleen <ak@...e.de>
To:	"Andreas Herrmann" <andreas.herrmann3@....com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86: limit mwait_idle to Intel CPUs

On Thursday 05 April 2007 16:00:45 Andreas Herrmann wrote:
> 
> 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?

> This patch will enable default_idle for non-Intel
> CPUs even if mwait is supported.

It would be better to clear MONITOR/MWAIT in the AMD specific
CPU initialize code than add workarounds everywhere else.

-Andi
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