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Subject: Re: StackPages errors (CALLTRACE)
To: jalvo@mbay.net (John Alvord)
Date: Fri, 5 Jul 2002 22:12:08 +0100 (BST)
Cc: thunder@ngforever.de (Thunder from the hill),
       exilion@yifan.net (Pablo Fischer), hahn@physics.mcmaster.ca (Mark Hahn),
       linux-kernel@vger.kernel.org
In-Reply-To: <83ubiu433pkcf41ev9ihl7mgo0tn1kokcc@4ax.com> from "John Alvord" at Jul 05, 2002 12:50:57 PM
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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
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> There has also been a patch on L-K which implments CMOV on prior-PPro
> processors. john

It has a hideous overhead. Just dont use cmov blindly in kernels. The kernel 
stuff will take care not to let the compiler stick cmov instructions into
a non ppro+ kernel
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