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Date: Tue, 1 Oct 2002 16:15:25 +0100
From: Dave Jones <davej@codemonkey.org.uk>
To: "Maciej W. Rozycki" <macro@ds2.pg.gda.pl>
Cc: "David L. DeGeorge" <dld@degeorge.org>, linux-kernel@vger.kernel.org
Subject: Re: CPU/cache detection wrong
Message-ID: <20021001151525.GA32467@suse.de>
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On Tue, Oct 01, 2002 at 03:35:54PM +0200, Maciej W. Rozycki wrote:


 > > Some of the tualatins have an errata which makes L2 cache sizing
 > > impossible. They actually report they have 0K L2 cache. By checking
 > > the CPU model, we can guess we have at least 256K (which is where Linux
 > > got that number from in your case). But this however means the 512K
 > > models will report as 256K too.
 > > To work around it, boot with cachesize=512 and all will be good.
 > 
 >  Strange -- why not to default to 256K and override it with the value
 > obtained from a cache descriptor if != 0, then?

Because the cache descriptor IS zero. So we default to 256K.

		Dave

-- 
| Dave Jones.        http://www.codemonkey.org.uk
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