Re: [RFC PATCH v5 089/104] KVM: TDX: Add a placeholder for handler of TDX hypercalls (TDG.VP.VMCALL)

[Paolo Bonzini]

On 4/7/22 06:15, Kai Huang wrote:
> >   
> > +static int handle_tdvmcall(struct kvm_vcpu *vcpu)
> > +{
> > +	struct vcpu_tdx *tdx = to_tdx(vcpu);
> > +
> > +	if (unlikely(tdx->tdvmcall.xmm_mask))
> > +		goto unsupported;
> Put a comment explaining this logic?

This only seems to be necessary for Hyper-V hypercalls, which however 
are not supported by this series in TDX guests (because the 
kvm_hv_hypercall still calls kvm_*_read, likewise for Xen).

So for now this conditional can be dropped.

Since