kvm: mmu: Don't expose private memslots to L2
These private pages have special purposes in the virtualization of L1, but not in the virtualization of L2. In particular, L1's APIC access page should never be entered into L2's page tables, because this causes a great deal of confusion when the APIC virtualization hardware is being used to accelerate L2's accesses to its own APIC. Signed-off-by: NJim Mattson <jmattson@google.com> Signed-off-by: NKrish Sadhukhan <krish.sadhukhan@oracle.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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