The patch is to make kvm_set_spte_hva() return int and caller can
check return value to determine flush tlb or not.
Signed-off-by: NLan Tianyu <Tianyu.Lan@microsoft.com>
Acked-by: NPaul Mackerras <paulus@ozlabs.org>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>