From 60d7cacac8f08d7832b9b4081f32b8e953867b55 Mon Sep 17 00:00:00 2001 From: Peter Xu Date: Tue, 27 Jun 2017 12:10:10 +0800 Subject: machine: export register_compat_prop() We have HW_COMPAT_*, however that's only bound to machines, not other things (like accelerators). Behind it, it was register_compat_prop() that played the trick. Let's export the function for further use outside HW_COMPAT_* magic. Meanwhile, move it to qdev-properties.c where seems more proper (since it'll be used not only in machine codes). Signed-off-by: Peter Xu Message-Id: <1498536619-14548-2-git-send-email-peterx@redhat.com> Reviewed-by: Eduardo Habkost Signed-off-by: Juan Quintela --- include/hw/qdev-properties.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'include/hw/qdev-properties.h') diff --git a/include/hw/qdev-properties.h b/include/hw/qdev-properties.h index 39bf4b292e..50ade839b7 100644 --- a/include/hw/qdev-properties.h +++ b/include/hw/qdev-properties.h @@ -209,6 +209,29 @@ void qdev_prop_set_globals(DeviceState *dev); void error_set_from_qdev_prop_error(Error **errp, int ret, DeviceState *dev, Property *prop, const char *value); +/** + * register_compat_prop: + * + * Register internal (not user-provided) global property, changing the + * default value of a given property in a device type. This can be used + * for enabling machine-type compatibility or for enabling + * accelerator-specific defaults in devices. + * + * The property values set using this function must be always valid and + * never report setter errors, as the property will have + * GlobalProperty::errp set to &error_abort. + * + * User-provided global properties should override internal global + * properties, so callers of this function should ensure that it is + * called before user-provided global properties are registered. + * + * @driver: Device type to be affected + * @property: Property whose default value is going to be changed + * @value: New default value for the property + */ +void register_compat_prop(const char *driver, const char *property, + const char *value); + /** * qdev_property_add_static: * @dev: Device to add the property to. -- cgit v1.2.3