linux-kernel - Re: Choosing a HyperThreading/SMP/MultiCore kernel ?

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Message-Id: <200701130338.l0D3chOs026407@turing-police.cc.vt.edu>
Date:	Fri, 12 Jan 2007 22:38:43 -0500
From:	Valdis.Kletnieks@...edu
To:	lsorense@...lub.uwaterloo.ca (Lennart Sorensen)
Cc:	Sunil Naidu <akula2.shark@...il.com>, linux-kernel@...r.kernel.org
Subject: Re: Choosing a HyperThreading/SMP/MultiCore kernel ?

On Fri, 12 Jan 2007 10:03:49 EST, Lennart Sorensen said:
>
> I would expect any distribution should work on these (as long as the
> kernel they use isn't too old.).  Of course if it is a Mac, you need a
> distribution that supports their firmware (which is of course not a PC
> bios).  As long as you can boot it, any i386 or amd64 kernel with smp
> enabled should use all the processors present (well amd64 on the
> core2duo and on the p4 if it is em64t enabled).

amd64 will only work on a core2duo if it's a T7200 or higher - the
lower numbers are 32-bit-only chipsets.  I admit not knowing what
exact variant the Mac has.

> I believe the closest optimization for a Core2 is probably the Pentium M
> (certainly not the P4/netburst).  Not entirely sure though.

CONFIG_MCORE2=y

That's probably even closer :)  At least in 2.6.20-rc4-mm1.  

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