> > @@ -883,7 +884,7 @@ static gpa_t FNAME(gva_to_gpa)(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
> > */
> > static int FNAME(sync_spte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp, int i)
> > {
> > - bool host_writable;
> > + bool host_writable, is_refcounted;
> > gpa_t first_pte_gpa;
> > u64 *sptep, spte;
> > struct kvm_memory_slot *slot;
> > @@ -940,10 +941,12 @@ static int FNAME(sync_spte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp, int
> > sptep = &sp->spt[i];
> > spte = *sptep;
> > host_writable = spte & shadow_host_writable_mask;
> > + // TODO: is this correct?
> > + is_refcounted = spte & SPTE_MMU_PAGE_REFCOUNTED;
> > slot = kvm_vcpu_gfn_to_memslot(vcpu, gfn);
> > make_spte(vcpu, sp, slot, pte_access, gfn,
> > spte_to_pfn(spte), spte, true, false,
> > - host_writable, &spte);
> > + host_writable, is_refcounted, &spte);
>
> Could we restrict that a non-refcounted page shall not be used as shadow page?
Oh, sorry. It's not about shadow page. It's about guest page being
mapped as not refcounted. Silly me...
B.R.
Yu
