Re: [Qemu-devel] [RFC 0/2] GET_EMULATED_CPUID support with "allow-emulation" option

[Alexander Graf]

On 05.06.14 18:44, Paolo Bonzini wrote:
> Il 05/06/2014 18:40, Alexander Graf ha scritto:
> >   kvm_set_cpuid(cpuid);
> >
> > but enabling all experimental features inside KVM just because we want
> > one or two of them is very counter-intuitive. Imagine we'd introduce
> > emulation support for AVX. Suddenly allow-emulation (which I'd need for
> > Mac OS X 10.5) would enable AVX as well which I really don't want 
> > enabled.
>
> Only if you were using "-cpu somethingThatHasAVX", though, no?

Yes. The same argument goes the other way around. I want to use AVX 
emulation, do "allow-emulation" and suddenly I get MONITOR/MWAIT emulation.


Alex