KVM: Consolidate userspace memory capability reporting into common code

Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index e066eb1..eb70ca6 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1908,6 +1908,7 @@
 static long kvm_dev_ioctl_check_extension_generic(long arg)
 {
 	switch (arg) {
+	case KVM_CAP_USER_MEMORY:
 	case KVM_CAP_DESTROY_MEMORY_REGION_WORKS:
 		return 1;
 	default: