KVM: s390: implement has_attr for FLIC

HAS_ATTR is useful for determining the supported attributes; let's
implement it.

Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index 84efc2ba6a90..4c2cdb2dcfc8 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -2074,6 +2074,22 @@ static int flic_set_attr(struct kvm_device *dev, struct kvm_device_attr *attr)
         return r;
 }
 
+static int flic_has_attr(struct kvm_device *dev,
+                             struct kvm_device_attr *attr)
+{
+        switch (attr->group) {
+        case KVM_DEV_FLIC_GET_ALL_IRQS:
+        case KVM_DEV_FLIC_ENQUEUE:
+        case KVM_DEV_FLIC_CLEAR_IRQS:
+        case KVM_DEV_FLIC_APF_ENABLE:
+        case KVM_DEV_FLIC_APF_DISABLE_WAIT:
+        case KVM_DEV_FLIC_ADAPTER_REGISTER:
+        case KVM_DEV_FLIC_ADAPTER_MODIFY:
+                return 0;
+        }
+        return -ENXIO;
+}
+
 static int flic_create(struct kvm_device *dev, u32 type)
 {
         if (!dev)
@@ -2095,6 +2111,7 @@ struct kvm_device_ops kvm_flic_ops = {
         .name = "kvm-flic",
         .get_attr = flic_get_attr,
         .set_attr = flic_set_attr,
+        .has_attr = flic_has_attr,
         .create = flic_create,
         .destroy = flic_destroy,
 };