Re: Shut up unhandled MSR warnings

From: Borislav Petkov
Date: Thu Nov 12 2015 - 07:16:56 EST

On Thu, Nov 12, 2015 at 11:59:58AM +0100, Borislav Petkov wrote:
> On Thu, Nov 12, 2015 at 11:33:33AM +0100, Paolo Bonzini wrote:
> > Yes, see guest_cpuid_has_* for an example of reading the CPUID values.
> >
> > But if it's defined for _all_ models starting at family 21, we can just
> > do it unconditionally.
> The thing is, those bits are Reserved again on the next family 22. Lemme
> take a look at guest_cpuid_has_* and see how ugly it gets.

Ok, I see there's guest_cpuid_is_amd() but I'd need also family and model.

How about adding also

guest_cpuid_family(), guest_cpuid_model(), guest_cpuid_stepping()? Those
could be quite useful in other contexts maybe.

Or, I can do a single function which simply returns CPUID_1_EAX of the
guest vcpu and caller can then pick stuff apart...



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