Re: kernel + gcc 4.1 = several problems

From: Mikael Pettersson
Date: Tue Jan 02 2007 - 21:23:48 EST


On Tue, 2 Jan 2007 17:43:00 -0800 (PST), Linus Torvalds wrote:
> > The suggestions I've had so far which I have not yet tried:
> >
> > - Select a different x86 CPU in the config.
> > - Unfortunately the C3-2 flags seem to simply tell GCC
> > to schedule for ppro (like i686) and enabled MMX and SSE
> > - Probably useless
>
> Actually, try this one. Try using something that doesn't like "cmov".
> Maybe the C3-2 simply has some internal cmov bugginess.

That's a good suggestion. Earlier C3s didn't have cmov so it's
not entirely unlikely that cmov in C3-2 is broken in some cases.
Configuring for P5MMX or 486 should be good safe alternatives.

/Mikael
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