KVM: x86/mmu: fix parameters to kvm_flush_remote_tlbs_with_address

kvm_flush_remote_tlbs_with_address expects (start gfn, number of pages),
and not (start gfn, end gfn)

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20210810205251.424103-3-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/mmu/mmu.c

@@ -5703,13 +5703,17 @@ void kvm_zap_gfn_range(struct kvm *kvm, gfn_t gfn_start, gfn_t gfn_end)
 			}
 		}
 		if (flush)
-			kvm_flush_remote_tlbs_with_address(kvm, gfn_start, gfn_end);
+			kvm_flush_remote_tlbs_with_address(kvm, gfn_start,
+							   gfn_end - gfn_start);
 	}
 
 	if (is_tdp_mmu_enabled(kvm)) {
 		for (i = 0; i < KVM_ADDRESS_SPACE_NUM; i++)
 			flush = kvm_tdp_mmu_zap_gfn_range(kvm, i, gfn_start,
 							  gfn_end, flush);
+		if (flush)
+			kvm_flush_remote_tlbs_with_address(kvm, gfn_start,
+							   gfn_end - gfn_start);
 	}
 
 	if (flush)