hw/i386: define _AS_LATEST() macros for machine types

Follow the other architecture targets by adding extra macros for
defining a versioned machine type as the latest. This reduces the
size of the changes when introducing new machine types at the start
of each release cycle.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-ID: <20240910163041.3764176-1-berrange@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Message-ID: <20241126103005.3794748-2-cohuck@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

hw/i386/pc_piix.c

@@ -446,7 +446,10 @@ static void pc_i440fx_init(MachineState *machine)
 }
 
 #define DEFINE_I440FX_MACHINE(major, minor) \
-    DEFINE_PC_VER_MACHINE(pc_i440fx, "pc-i440fx", pc_i440fx_init, major, minor);
+    DEFINE_PC_VER_MACHINE(pc_i440fx, "pc-i440fx", pc_i440fx_init, false, NULL, major, minor);
+
+#define DEFINE_I440FX_MACHINE_AS_LATEST(major, minor) \
+    DEFINE_PC_VER_MACHINE(pc_i440fx, "pc-i440fx", pc_i440fx_init, true, "pc", major, minor);
 
 static void pc_i440fx_machine_options(MachineClass *m)
 {
@@ -477,17 +480,13 @@ static void pc_i440fx_machine_options(MachineClass *m)
 static void pc_i440fx_machine_9_2_options(MachineClass *m)
 {
     pc_i440fx_machine_options(m);
-    m->alias = "pc";
-    m->is_default = true;
 }
 
-DEFINE_I440FX_MACHINE(9, 2);
+DEFINE_I440FX_MACHINE_AS_LATEST(9, 2);
 
 static void pc_i440fx_machine_9_1_options(MachineClass *m)
 {
     pc_i440fx_machine_9_2_options(m);
-    m->alias = NULL;
-    m->is_default = false;
     compat_props_add(m->compat_props, hw_compat_9_1, hw_compat_9_1_len);
     compat_props_add(m->compat_props, pc_compat_9_1, pc_compat_9_1_len);
 }

hw/i386/pc_q35.c

@@ -327,10 +327,13 @@ static void pc_q35_init(MachineState *machine)
 }
 
 #define DEFINE_Q35_MACHINE(major, minor) \
-    DEFINE_PC_VER_MACHINE(pc_q35, "pc-q35", pc_q35_init, major, minor);
+    DEFINE_PC_VER_MACHINE(pc_q35, "pc-q35", pc_q35_init, false, NULL, major, minor);
+
+#define DEFINE_Q35_MACHINE_AS_LATEST(major, minor) \
+    DEFINE_PC_VER_MACHINE(pc_q35, "pc-q35", pc_q35_init, false, "q35", major, minor);
 
 #define DEFINE_Q35_MACHINE_BUGFIX(major, minor, micro) \
-    DEFINE_PC_VER_MACHINE(pc_q35, "pc-q35", pc_q35_init, major, minor, micro);
+    DEFINE_PC_VER_MACHINE(pc_q35, "pc-q35", pc_q35_init, false, NULL, major, minor, micro);
 
 static void pc_q35_machine_options(MachineClass *m)
 {
@@ -359,15 +362,13 @@ static void pc_q35_machine_options(MachineClass *m)
 static void pc_q35_machine_9_2_options(MachineClass *m)
 {
     pc_q35_machine_options(m);
-    m->alias = "q35";
 }
 
-DEFINE_Q35_MACHINE(9, 2);
+DEFINE_Q35_MACHINE_AS_LATEST(9, 2);
 
 static void pc_q35_machine_9_1_options(MachineClass *m)
 {
     pc_q35_machine_9_2_options(m);
-    m->alias = NULL;
     compat_props_add(m->compat_props, hw_compat_9_1, hw_compat_9_1_len);
     compat_props_add(m->compat_props, pc_compat_9_1, pc_compat_9_1_len);
 }

include/hw/i386/pc.h

@@ -320,7 +320,7 @@ extern const size_t pc_compat_2_3_len;
     } \
     type_init(pc_machine_init_##suffix)
 
-#define DEFINE_PC_VER_MACHINE(namesym, namestr, initfn, ...) \
+#define DEFINE_PC_VER_MACHINE(namesym, namestr, initfn, isdefault, malias, ...) \
     static void MACHINE_VER_SYM(init, namesym, __VA_ARGS__)( \
         MachineState *machine) \
     { \
@@ -334,6 +334,8 @@ extern const size_t pc_compat_2_3_len;
         MACHINE_VER_SYM(options, namesym, __VA_ARGS__)(mc); \
         mc->init = MACHINE_VER_SYM(init, namesym, __VA_ARGS__); \
         MACHINE_VER_DEPRECATION(__VA_ARGS__); \
+        mc->is_default = isdefault; \
+        mc->alias = malias; \
     } \
     static const TypeInfo MACHINE_VER_SYM(info, namesym, __VA_ARGS__) = \
     { \