> > + /*
> > + * If the TD isn't finalized/runnable, then userspace is initializing
> > + * the VM image via KVM_TDX_INIT_MEM_REGION. Increment the number of
> > + * pages that need to be mapped and initialized via TDH.MEM.PAGE.ADD.
> > + * KVM_TDX_FINALIZE_VM checks the counter to ensure all mapped pages
> > + * have been added to the image, to prevent running the TD with a
> > + * valid mapping in the mirror EPT, but not in the S-EPT.
> > + */
> > + if (unlikely(kvm_tdx->state != TD_STATE_RUNNABLE)) {
> > + if (KVM_BUG_ON(kvm->arch.pre_fault_allowed, kvm))
> > + return -EIO;
> > +
> > + atomic64_inc(&kvm_tdx->nr_premapped);
>
> Nit: the comment
>
> /* nr_premapped will be decreased when tdh_mem_page_add() is called. */
>
> is lost. I think we can somehow embed it to the big comment above?
Please ignore this. I saw the whole 'nr_premapped' eventually got removed
later in this series so don't bother :-)
