[RFC 2/2] hw/loongarch/virt: Define versioned virt machine

[Bibo Mao]

Add versioned virt machine started from QEMU 10.2

Signed-off-by: Bibo Mao <maob...@loongson.cn>
---
 hw/loongarch/virt.c | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c
index ed406e3410..afe5d02470 100644
--- a/hw/loongarch/virt.c
+++ b/hw/loongarch/virt.c
@@ -1371,9 +1371,41 @@ static void virt_class_init(ObjectClass *oc, const void 
*data)
                                           "The string may be up to 8 bytes in 
size");
 }
 
+#define DEFINE_VIRT_MACHINE_VERSION(latest, ...) \
+    static void MACHINE_VER_SYM(class_init, virt, __VA_ARGS__)( \
+        ObjectClass *oc, \
+        const void *data) \
+    { \
+        MachineClass *mc = MACHINE_CLASS(oc); \
+        MACHINE_VER_SYM(options, virt, __VA_ARGS__)(mc); \
+        mc->desc = "QEMU " MACHINE_VER_STR(__VA_ARGS__) " LoongArch Virtual 
Machine"; \
+        MACHINE_VER_DEPRECATION(__VA_ARGS__); \
+        if (latest) { \
+            mc->alias = "virt"; \
+        } \
+    } \
+    static const TypeInfo MACHINE_VER_SYM(info, virt, __VA_ARGS__) = \
+    { \
+        .name = MACHINE_VER_TYPE_NAME("virt", __VA_ARGS__), \
+        .parent = TYPE_LOONGARCH_VIRT_MACHINE, \
+        .class_init = MACHINE_VER_SYM(class_init, virt, __VA_ARGS__), \
+    }; \
+    static void MACHINE_VER_SYM(register, virt, __VA_ARGS__)(void) \
+    { \
+        MACHINE_VER_DELETION(__VA_ARGS__); \
+        type_register_static(&MACHINE_VER_SYM(info, virt, __VA_ARGS__)); \
+    } \
+    type_init(MACHINE_VER_SYM(register, virt, __VA_ARGS__));
+
+#define DEFINE_VIRT_MACHINE_AS_LATEST(major, minor) \
+    DEFINE_VIRT_MACHINE_VERSION(true, major, minor)
+#define DEFINE_VIRT_MACHINE(major, minor) \
+    DEFINE_VIRT_MACHINE_VERSION(false, major, minor)
+
 static const TypeInfo virt_machine_info = {
     .name           = TYPE_LOONGARCH_VIRT_MACHINE,
     .parent         = TYPE_MACHINE,
+    .abstract       = true,
     .instance_size  = sizeof(LoongArchVirtMachineState),
     .class_init     = virt_class_init,
     .instance_init  = virt_initfn,
@@ -1389,3 +1421,8 @@ static void machvirt_machine_init(void)
 }
 
 type_init(machvirt_machine_init);
+
+static void virt_machine_10_2_options(MachineClass *mc)
+{
+}
+DEFINE_VIRT_MACHINE_AS_LATEST(10, 2)
-- 
2.39.3