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[PULL,v2,01/15] vmbus: Don't make QOM property registration conditional

Message ID 20210708195552.2730970-2-ehabkost@redhat.com
State New
Headers show
Series [PULL,v2,01/15] vmbus: Don't make QOM property registration conditional | expand

Commit Message

Eduardo Habkost July 8, 2021, 7:55 p.m. UTC 
Having properties registered conditionally makes QOM type
introspection difficult.  Instead of skipping registration of the
"instanceid" property, always register the property but validate
its value against the instance id required by the class.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Acked-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
Message-Id: <20201009200701.1830060-1-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
 hw/hyperv/vmbus.c | 20 +++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/hw/hyperv/vmbus.c b/hw/hyperv/vmbus.c
index 984caf898dc..c9887d5a7bc 100644
--- a/hw/hyperv/vmbus.c
+++ b/hw/hyperv/vmbus.c
@@ -2372,6 +2372,14 @@  static void vmbus_dev_realize(DeviceState *dev, Error **errp)
 
     assert(!qemu_uuid_is_null(&vdev->instanceid));
 
+    if (!qemu_uuid_is_null(&vdc->instanceid)) {
+        /* Class wants to only have a single instance with a fixed UUID */
+        if (!qemu_uuid_is_equal(&vdev->instanceid, &vdc->instanceid)) {
+            error_setg(&err, "instance id can't be changed");
+            goto error_out;
+        }
+    }
+
     /* Check for instance id collision for this class id */
     QTAILQ_FOREACH(child, &BUS(vmbus)->children, sibling) {
         VMBusDevice *child_dev = VMBUS_DEVICE(child->child);
@@ -2438,18 +2446,22 @@  static void vmbus_dev_unrealize(DeviceState *dev)
     free_channels(vdev);
 }
 
+static Property vmbus_dev_props[] = {
+    DEFINE_PROP_UUID("instanceid", VMBusDevice, instanceid),
+    DEFINE_PROP_END_OF_LIST()
+};
+
+
 static void vmbus_dev_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *kdev = DEVICE_CLASS(klass);
+    device_class_set_props(kdev, vmbus_dev_props);
     kdev->bus_type = TYPE_VMBUS;
     kdev->realize = vmbus_dev_realize;
     kdev->unrealize = vmbus_dev_unrealize;
     kdev->reset = vmbus_dev_reset;
 }
 
-static Property vmbus_dev_instanceid =
-                        DEFINE_PROP_UUID("instanceid", VMBusDevice, instanceid);
-
 static void vmbus_dev_instance_init(Object *obj)
 {
     VMBusDevice *vdev = VMBUS_DEVICE(obj);
@@ -2458,8 +2470,6 @@  static void vmbus_dev_instance_init(Object *obj)
     if (!qemu_uuid_is_null(&vdc->instanceid)) {
         /* Class wants to only have a single instance with a fixed UUID */
         vdev->instanceid = vdc->instanceid;
-    } else {
-        qdev_property_add_static(DEVICE(vdev), &vmbus_dev_instanceid);
     }
 }