Re: [PATCH 03/15] KVM: SVM: Inject #UD on RDTSCP when it should be disabled in the guest

[Paolo Bonzini]

On 04/05/21 23:53, Sean Christopherson wrote:
> > Does the right thing happen here if the vCPU is in guest mode when
> > userspace decides to toggle the CPUID.80000001H:EDX.RDTSCP bit on or
> > off?
> I hate our terminology.  By "guest mode", do you mean running the vCPU, or do
> you specifically mean running in L2?

Guest mode should mean L2.

(I wonder if we should have a capability that says "KVM_SET_CPUID2 can 
only be called prior to KVM_RUN").

Paolo