Messages in this thread | | | From | Denis Vlasenko <> | Subject | Re: x86-fix-cmpxchg.patch added to -mm tree | Date | Mon, 12 Sep 2005 10:23:20 +0300 |
| |
On Monday 12 September 2005 09:41, Jan Beulich wrote: > >>> Dave Jones <davej@redhat.com> 10.09.05 02:30:38 >>> > >On Fri, Sep 09, 2005 at 05:06:56PM -0700, Andrew Morton wrote: > > > > > - cmpxchg8b gets disabled when the minimum specified hardware > architectur > > > doesn't support it (like was already happening for the byte, > word, and > > > long ones). > > > > > > +config X86_CMPXCHG64 > > > + bool > > > + depends on !M386 && !M486 && !MCYRIXIII && !MGEODEGX1 > > > + default y > > > >This is wrong. All the Winchip/CyrixIII CPUs do indeed have cx8. > >Though cpuid will report that it's missing until We explicitly enable > >it in init_c3(). Whilst it's "disabled" however, the instruction does > >run perfectly fine. This was done because Win NT wouldn't boot if it > >found a non Intel CPU which had cx8 iirc.
Can this be added to comments in the right place?
> >I'm not familiar with the Geode enough to answer definitively. > >Alan seems to be the Geode-guru, and may still have datasheets for > that. > > Resubmitting adjusted patch (taking into account also Alan's later > response). -- vda - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |