lkml.org 
[lkml]   [2005]   [Sep]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    SubjectRe: x86-fix-cmpxchg.patch added to -mm tree
    Date
    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/

    \
     
     \ /
      Last update: 2005-09-12 09:26    [W:0.030 / U:0.024 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site