linux-kernel - Re: [PATCH] Mention Intel Atom in Kconfig.cpu

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Message-ID: <20081013133051.GL12131@one.firstfloor.org>
Date:	Mon, 13 Oct 2008 15:30:51 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	Andi Kleen <andi@...stfloor.org>,
	Phil Endecott <phil_wueww_endecott@...zphil.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Mention Intel Atom in Kconfig.cpu

On Mon, Oct 13, 2008 at 09:18:48AM -0400, Arjan van de Ven wrote:
> On Mon, 13 Oct 2008 14:28:06 +0200
> Andi Kleen <andi@...stfloor.org> wrote:
> 
> > "Phil Endecott" <phil_wueww_endecott@...zphil.org> writes:
> > 
> > > Am I right in thinking that CONFIG_MCORE2 is the correct choice for
> > > an Intel Atom? 
> > 
> > No, Atom is completely different from a Core2.
> > 
> > Right now 586 or 686 is a reasonable choice.
> 
> actually 586 is completely wrong.

It is nearest in scheduling at least. You'll lose CMOV, but that's
not a big loss.

> Core2 instruction set with tune=generic is still the best to set.

Not sure that is true. These option are mostly for the compiler.

-Andi

-- 
ak@...ux.intel.com
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