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SubjectRe: i686 quirk for AMD Geode
On Thu, 12 Nov 2009 13:18:05 +0100
Pavel Machek <> wrote:

> Hi!
> > > > The Geode NX (which no one has mentioned yet) is an Athlon
> > > > derived chip.
> > >
> > > *As far as I know* K6 didn't have NOPL, whereas K7 does.
> >
> > Which would be mroe indication that the Geode LX may in fact be a K6
> > based CPU design. The Geode NX is very clearly an Athlon (K7) and
> > AMD has never even tried to hide that. They have never said what
> > the LX is based on, other than it isn't based on the GX
> > (fortunately, that thing was a buggy piece of crap).
> Interesting...geode gx being buggy? I know pentium was famous for the
> fdiv bug, but never heard of geode gx problems...

1.4 is my favorite. The branch prediction logic can send the
instruction pointer off to la-la land.

While at olpc, we had a sad discussion about what the *real* impact of
the workaround was...

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