cpu: Change parent type to Device

This finally makes the CPU class a subclass of the Device class,
allowing us to start using DeviceState properties on CPU subclasses.

It has no_user=1, as creating CPUs using -device doesn't work yet.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>

include/qom/cpu.h

@@ -20,7 +20,7 @@
 #ifndef QEMU_CPU_H
 #define QEMU_CPU_H
 
-#include "qom/object.h"
+#include "hw/qdev-core.h"
 #include "qemu/thread.h"
 
 /**
@@ -46,7 +46,7 @@ typedef struct CPUState CPUState;
  */
 typedef struct CPUClass {
     /*< private >*/
-    ObjectClass parent_class;
+    DeviceClass parent_class;
     /*< public >*/
 
     void (*reset)(CPUState *cpu);
@@ -66,7 +66,7 @@ struct kvm_run;
  */
 struct CPUState {
     /*< private >*/
-    Object parent_obj;
+    DeviceState parent_obj;
     /*< public >*/
 
     struct QemuThread *thread;

qom/cpu.c

@@ -36,14 +36,16 @@ static void cpu_common_reset(CPUState *cpu)
 
 static void cpu_class_init(ObjectClass *klass, void *data)
 {
+    DeviceClass *dc = DEVICE_CLASS(klass);
     CPUClass *k = CPU_CLASS(klass);
 
     k->reset = cpu_common_reset;
+    dc->no_user = 1;
 }
 
-static TypeInfo cpu_type_info = {
+static const TypeInfo cpu_type_info = {
     .name = TYPE_CPU,
-    .parent = TYPE_OBJECT,
+    .parent = TYPE_DEVICE,
     .instance_size = sizeof(CPUState),
     .abstract = true,
     .class_size = sizeof(CPUClass),