Re: [RFC PATCH 3/4] KVM: TDX: Exit to userspace for GetTdVmCallInfo

[Xiaoyao Li]

On 6/11/2025 10:17 PM, Edgecombe, Rick P wrote:
> On Wed, 2025-06-11 at 10:37 +0800, Xiaoyao Li wrote:
> > > Maybe we can use a TDX specific opt-in interface instead of TDVMCALL
> > > specific
> > > interface.
> > > But not sure we should add it now or later.
> >
> > For simplicity, I prefer separate opt-in interfaces, it makes code simpler.
>
> What is the problem with using the existing exit opt-in interface?

It mixes up common KVM defined hypercall leafs (KVM_HC_*) with TDX 
specific TDVMCALL leafs. Surely it can work but it just doesn't look 
clean to me.