Re: SMP code and uniprocessor

Bill Hawes (whawes@transmeta.com)
Sun, 02 Aug 1998 14:44:27 -0700


John Fulmer wrote:

> Forgive me if this is an RTFM (which I have), but is it safe yet to
> leave the SMP=1 uncommented out when compiling on a uniprocessor
> machine?
>
> A few revisions ago (2.1.105 maybe?) I found it very unsafe. I haven't
> seen anything mentioned lately about it one way or the other. Anything
> definative?

It's safe for most machines, though every now and then an SMP kernel breaks
on UP. Supposedly there's a performance penalty, though.

A few systems/motherboards won't work with an SMP kernel.

Regards,
Bill

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