Re: [RFC PATCH v5 027/104] KVM: TDX: initialize VM with TDX specific parameters

[Paolo Bonzini]

On 4/6/22 04:06, Xiaoyao Li wrote:
> > Indeed, it would be easier to use the existing cpuid data in struct 
> > kvm_vcpu, because right now there is no way to ensure that they are 
> > consistent.
> >
> > Why is KVM_SET_CPUID2 not enough?  Are there any modifications done by 
> > KVM that affect the measurement?
>
> Then we get the situation that KVM_TDX_INIT_VM must be called after 1 
> vcpu is created. It seems illogical that it has chance to fail the VM 
> scope initialization after 1 vcpu is successfully created.

I see.  Yeah, it makes sense to have the CPUID in KVM_TDX_INIT_VM then.

Paolo