RE: [PATCH v1 7/8] KVM: x86: Expose PEBS feature to guest

[Kang, Luwei]

> > > > Expose PEBS feature to guest by IA32_MISC_ENABLE[bit12].
> > > > IA32_MISC_ENABLE[bit12] is Processor Event Based Sampling (PEBS)
> > > > Unavailable (RO) flag:
> > > > 1 = PEBS is not supported; 0 = PEBS is supported.
> > >
> > > Why does it make sense to expose this on SVM?
> >
> > Thanks for the review. This patch won't expose the pebs feature to SVM and return not supported.
> 
> AFAICT it exposes/emulates an Intel MSR on AMD, which is just weird.

I checked with the "AMD64 Architecture Programmer's Manual" and didn't found this register (IA32_MISC_ENABLE).
Will move this register to vmx.c in next version.

Thanks,
Luwei Kang