[Qemu-devel] [PATCH v3 01/13] machine: export register_compat_prop()

[Peter Xu <peterx@redhat.com>]

We have HW_COMPAT_*, however that's only binded 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.
Refactor it a bit to provide global_prop_list_add() for further
use (will use it in cases where we need a GlobalProperty list).

CC: Eduardo Habkost <ehabkost@redhat.com>
CC: Markus Armbruster <armbru@redhat.com>
CC: Marcel Apfelbaum <marcel@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
---
 accel.c                      |  1 +
 hw/core/machine.c            | 14 +-------------
 hw/core/qdev-properties.c    | 22 ++++++++++++++++++++++
 include/hw/qdev-properties.h |  5 +++++
 4 files changed, 29 insertions(+), 13 deletions(-)

diff --git a/accel.c b/accel.c
index 664bb88..62edd29 100644
--- a/accel.c
+++ b/accel.c
@@ -26,6 +26,7 @@
 #include "qemu/osdep.h"
 #include "sysemu/accel.h"
 #include "hw/boards.h"
+#include "hw/qdev-properties.h"
 #include "qemu-common.h"
 #include "sysemu/arch_init.h"
 #include "sysemu/sysemu.h"
diff --git a/hw/core/machine.c b/hw/core/machine.c
index 2e7e977..b4b3449 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -16,6 +16,7 @@
 #include "qapi-visit.h"
 #include "qapi/visitor.h"
 #include "hw/sysbus.h"
+#include "hw/qdev-properties.h"
 #include "sysemu/sysemu.h"
 #include "sysemu/numa.h"
 #include "qemu/error-report.h"
@@ -770,19 +771,6 @@ static void machine_class_finalize(ObjectClass *klass, void *data)
     g_free(mc->name);
 }
 
-static void register_compat_prop(const char *driver,
-                                 const char *property,
-                                 const char *value)
-{
-    GlobalProperty *p = g_new0(GlobalProperty, 1);
-    /* Machine compat_props must never cause errors: */
-    p->errp = &error_abort;
-    p->driver = driver;
-    p->property = property;
-    p->value = value;
-    qdev_prop_register_global(p);
-}
-
 static void machine_register_compat_for_subclass(ObjectClass *oc, void *opaque)
 {
     GlobalProperty *p = opaque;
diff --git a/hw/core/qdev-properties.c b/hw/core/qdev-properties.c
index 9f1a497..4b74382 100644
--- a/hw/core/qdev-properties.c
+++ b/hw/core/qdev-properties.c
@@ -1042,6 +1042,28 @@ void qdev_prop_set_ptr(DeviceState *dev, const char *name, void *value)
 
 static GList *global_props;
 
+GList *global_prop_list_add(GList *list, const char *driver,
+                            const char *property, const char *value)
+{
+    GlobalProperty *p = g_new0(GlobalProperty, 1);
+
+    /* These properties cannot fail the apply */
+    p->errp = &error_abort;
+    p->driver = driver;
+    p->property = property;
+    p->value = value;
+
+    return g_list_append(list, p);
+}
+
+void register_compat_prop(const char *driver,
+                          const char *property,
+                          const char *value)
+{
+    global_props = global_prop_list_add(global_props, driver,
+                                        property, value);
+}
+
 void qdev_prop_register_global(GlobalProperty *prop)
 {
     global_props = g_list_append(global_props, prop);
diff --git a/include/hw/qdev-properties.h b/include/hw/qdev-properties.h
index d206fc9..15ee6ba 100644
--- a/include/hw/qdev-properties.h
+++ b/include/hw/qdev-properties.h
@@ -201,6 +201,11 @@ 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);
 
+GList *global_prop_list_add(GList *list, const char *driver,
+                            const char *property, const char *value);
+void register_compat_prop(const char *driver, const char *property,
+                          const char *value);
+
 /**
  * qdev_property_add_static:
  * @dev: Device to add the property to.
-- 
2.7.4