From: "Maciej W. Rozycki" <macro@ds2.pg.gda.pl>
To: Dave Jones <davej@codemonkey.org.uk>
Cc: "David L. DeGeorge" <dld@degeorge.org>, linux-kernel@vger.kernel.org
Subject: Re: CPU/cache detection wrong
Date: Tue, 1 Oct 2002 15:35:54 +0200 (MET DST) [thread overview]
Message-ID: <Pine.GSO.3.96.1021001153347.13606C-100000@delta.ds2.pg.gda.pl> (raw)
In-Reply-To: <20021001111826.GA18583@suse.de>
On Tue, 1 Oct 2002, Dave Jones 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?
--
+ Maciej W. Rozycki, Technical University of Gdansk, Poland +
+--------------------------------------------------------------+
+ e-mail: macro@ds2.pg.gda.pl, PGP key available +
next prev parent reply other threads:[~2002-10-01 13:30 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-01 1:06 CPU/cache detection wrong David L. DeGeorge
2002-10-01 11:18 ` Dave Jones
2002-10-01 13:35 ` Maciej W. Rozycki [this message]
2002-10-01 15:15 ` Dave Jones
2002-10-01 16:03 ` Maciej W. Rozycki
2002-10-01 16:31 ` Dave Jones
-- strict thread matches above, loose matches on Subject: below --
2002-09-28 12:29 Alexander Hoogerhuis
2002-09-30 16:34 ` Alan Cox
2002-09-30 17:43 ` Alexander Hoogerhuis
2002-09-30 22:15 ` Dave Jones
2002-10-01 7:21 ` Alexander Hoogerhuis
2002-10-01 11:06 ` Dave Jones
2002-10-01 15:31 ` Alexander Hoogerhuis
2002-10-01 17:01 ` Vojtech Pavlik
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