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Derive the page role from the parent shadow page, since the only thing that changes is the level. This is in preparation for splitting huge pages during VM-ioctls which do not have access to the vCPU MMU context. No functional change intended. Reviewed-by: Peter Xu <peterx@redhat.com> Signed-off-by: David Matlack <dmatlack@google.com> Message-Id: <20220119230739.2234394-14-dmatlack@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>