Re: CPU/cache detection wrong

Maciej W. Rozycki (macro@ds2.pg.gda.pl)
Tue, 1 Oct 2002 15:35:54 +0200 (MET DST)


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        +

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