Date: Thu, 18 Mar 2004 22:42:30 +0100
From: Willy Tarreau <willy@w.ods.org>
To: Mark <mark@harddata.com>
Cc: lkml <linux-kernel@vger.kernel.org>
Subject: Re: Dual Athlon CPU detection..
Message-ID: <20040318214230.GE14537@alpha.home.local>
References: <4059FCB9.4070204@lbl.gov> <200403181352.34737.mark@harddata.com>
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On Thu, Mar 18, 2004 at 01:52:34PM -0700, Mark wrote:
> On March 18, 2004 12:47 pm, Thomas Davis <tadavis@lbl.gov> wrote:
> >
> > Is this a bad CPU, or a kernel bug?
> 
> AFAIK this information comes from the Bios. Some bioses don't verify that the 
> second CPU as being an MP. It's been known for some time. Some people were 
> using this to run 1 MP and 1 XP to save money on processors. However if you 
> were to update your bios, it might start checking both for being MPs. 
> Original bioses didn't even check for the first processor at one time but AMD 
> complained and the bioses were modified.

I can confirm this. I have two XP 1800 on my A7M266D, and the earlier bioses
reported different CPUs. Now after the bios upgrade, it simply reports that
they both are real MPs ! I even removed the fans once to be sure !

Cheers,
Willy

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