object_set_properties_from_qdict() serves as the common entry point for
parsing and setting properties from qdict (and keyval).

This function is primarily utilized for external user configuration:

1. User Creatable Objects (via user_creatable_add_type()):
   - QMP: object-add
   - HMP: object_add
   - CLI: -object (qemu), --object (qemu-img * / qemu-io / qemu-nbd /
         qemu-storage-daemon)
  - Authz list files ("authz-list-file")

2. Device and Machine creation (keyval-based):
   - CLI: -machine / -device
   - QMP/HMP: device_add
   - Failover devices: virtio_net parses user's "qdict" in
    failover_add_primary().

3. Built-in default machine options (MachineClass::default_machine_opts):
   - These hardcoded defaults simulate CLI arguments and are parsed via
     sugar property way or keyval. Treating them as USER_SET is
     acceptable as they emulate user behavior.

There are a few internal corner cases where devices are created using an
internal qdict:
   - Xen USB (usbback_portid_add())
   - Intel HDA (intel_hda_and_codec_init())

Creating devices via internal qdict should be considered as legacy
technical debt and this should be refactored in future work. For these
cases, applying the USER_SET flag is a temporary and acceptable side
effect.

Therefor, update object_set_properties_from_qdict() to explicitly mark
properties as USER_SET.

Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
---
 qom/object_interfaces.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/qom/object_interfaces.c b/qom/object_interfaces.c
index 415cbee8c5cf..f0d5f9d84300 100644
--- a/qom/object_interfaces.c
+++ b/qom/object_interfaces.c
@@ -56,6 +56,11 @@ static void object_set_properties_from_qdict(Object *obj, const QDict *qdict,
         if (!object_property_set(obj, e->key, v, errp)) {
             goto out;
         }
+
+        if (!object_property_set_flags(obj, e->key,
+                                       OBJ_PROP_FLAG_USER_SET, errp)) {
+            goto out;
+        }
     }
     visit_check_struct(v, errp);
 out:
-- 
2.34.1