migration: Add support for modules

So we don't have to compile everything in, or have ifdefs

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

include/qemu/module.h

@@ -40,6 +40,7 @@ static void __attribute__((constructor)) do_qemu_init_ ## function(void)    \
 #endif
 
 typedef enum {
+    MODULE_INIT_MIGRATION,
     MODULE_INIT_BLOCK,
     MODULE_INIT_OPTS,
     MODULE_INIT_QOM,
@@ -59,6 +60,7 @@ typedef enum {
 #define libqos_init(function) module_init(function, MODULE_INIT_LIBQOS)
 #define fuzz_target_init(function) module_init(function, \
                                                MODULE_INIT_FUZZ_TARGET)
+#define migration_init(function) module_init(function, MODULE_INIT_MIGRATION)
 #define block_module_load_one(lib) module_load_one("block-", lib)
 #define ui_module_load_one(lib) module_load_one("ui-", lib)
 #define audio_module_load_one(lib) module_load_one("audio-", lib)

softmmu/vl.c

@@ -2858,6 +2858,7 @@ void qemu_init(int argc, char **argv, char **envp)
     qemu_init_exec_dir(argv[0]);
 
     module_call_init(MODULE_INIT_QOM);
+    module_call_init(MODULE_INIT_MIGRATION);
 
     qemu_add_opts(&qemu_drive_opts);
     qemu_add_drive_opts(&qemu_legacy_drive_opts);