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SubjectRe: [Fwd: CPU detection revamp (Request for comments)]
davej@suse.de wrote:
>
> On Fri, 10 Nov 2000, Brian Gerst wrote:
>
> > > features : fpu vme de pse tsc msr mce cx8 pge mmx syscall 3dnow
> >
> > The K6's don't support sysenter/sysexit.
>
> The K6 datasheets suggests otherwise.
> Some models seem to have sysenter/sysexit, whilst others have
> syscall/sysret. No model seems to have both.
>
> The datasheets are somewhat confusing, as it doesn't mention bit 10
> at all, just an oversized box for bit 11.

The Athlons support sysenter and syscall, but the K6's only support
syscall. The earlier version of syscall (bit 10) is undocumented by
AMD.

--

Brian Gerst
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