Re: [Q] Implementation of spin_lock on i386: why "rep;nop" ?

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Dave Jones (davej@suse.de)
Mon, 17 Sep 2001 18:22:33 +0200 (CEST)

On Mon, 17 Sep 2001, Jean-Marc Saffroy wrote:

> What is the intent behind this "rep;nop" ? Does it really rely on an
> undocumented behaviour ?

Its used to stop Pentium 4's from cooking themselves.
See the P4 manuals for more info.

regards,

Dave.

-- | Dave Jones. http://www.suse.de/~davej | SuSE Labs

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