On Tue, Feb 10, 2026 at 11:23:41AM +0800, Zhao Liu wrote:
Update qdev property interfaces (qdev_property_add_static() and qdev_class_add_property()) to accept and pass 'ObjectPropertyFlags'. This enables marking qdev properties with flags such as DEPRECATED or INTERNAL.
To facilitate this at the definition level, extend the boolean and uint8_t property macros (as the examples) to accept variable arguments (VA_ARGS). This allows callers to optionally specify flags in the property definition.
Example:
DEFINE_PROP_UINT8("version", IOAPICCommonState, version, IOAPIC_VER_DEF, .flags = OBJECT_PROPERTY_DEPRECATED),
In other places where we track deprecation in QEMU, we have not used a boolean flag. Instead we have used a "const char *deprecation_note" internally, which lets us provide a user facing message, to be printed out in the warn_report, informing them what to do instead (either the feature is entirely removed, or there is a better alternative). IMHO we should be following the same pattern for properties, as it is much more user friendly than just printing a totally generic message "XXXX is deprecated, stop using it" With regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|