Re: Cyrix III processor and kernel boot problem

From: H. Peter Anvin (hpa@zytor.com)
Date: Sun Feb 09 2003 - 16:22:16 EST


Followup to: <1044631346.14350.17.camel@irongate.swansea.linux.org.uk>
By author: Alan Cox <alan@lxorguk.ukuu.org.uk>
In newsgroup: linux.dev.kernel
>
> On Fri, 2003-02-07 at 14:50, c1cc10 wrote:
> > I've found out that the Cyrix III has no CMOV instruction and that this
> > could be the problem.
>
> It is
>
> gcc told to build for i686 assumes that cmov is present. Much of the
> code advantage for i686 comes from cmov so it makes sense to do that
> I guess.
>

Yep. The other name for the option, -mach=pentiumpro, really is the
more proper name.

        -hpa

-- 
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!
"Unix gives you enough rope to shoot yourself in the foot."
Architectures needed: cris ia64 m68k mips64 ppc ppc64 s390 s390x sh v850 x86-64
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