On Fri, Mar 07, 2014 at 02:11:50PM -0800, H. Peter Anvin wrote:
> > > * Another option would be if we change the f/m/s of "qemu64" so that
> > > the test doesn't fire.
> > >
> > > What also makes me wonder is why is this thing even called qemu64?? AMD
> > > family 6 was 32-bit only CPUs so 64 is kinda wrong IMO. I mean, the
> > > kernel code is in "ifdef CONFIG_X86_32" block so "qemu64" is patently
> > > wrong naming.
> >
> > Additionally, fam:6 model:6 stepping 3 never existed in the real world
> > afaict.
> > I used to keep x86info's stepping db pretty up to date, and that only has
> > knowledge
> > of stepping 1 & 2.[*] Modelling qemu on something from the real world
> > might be
> > a better idea than inventing new special cases.
> >
> > > Oh, and the thing has CPUID_EXT2_LM which is also a WTH moment for me.
> > > Paolo, what's going on here?
> >
> > Yeah, this is a mess, there should be no family < 0xf with LM set.
> >
> For AMD, at least. Intel obviously have a bunch of chips with family ==
> 6 and LM.
Yeah, speaking solely about AMD here.
Dave
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