[PATCH v2 03/41] arch_init/ram_save: introduce constant for ram save version = 4

[Isaku Yamahata <yamahata@xxxxxxxxxxxxx>]

Introduce RAM_SAVE_VERSION_ID to represent version_id for ram save format.

Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
---
 arch_init.c |    2 +-
 arch_init.h |    2 ++
 vl.c        |    4 ++--
 3 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/arch_init.c b/arch_init.c
index bd4e61e..2a53f58 100644
--- a/arch_init.c
+++ b/arch_init.c
@@ -410,7 +410,7 @@ int ram_load(QEMUFile *f, void *opaque, int version_id)
     int flags;
     int error;
 
-    if (version_id < 4 || version_id > 4) {
+    if (version_id < 4 || version_id > RAM_SAVE_VERSION_ID) {
         return -EINVAL;
     }
 
diff --git a/arch_init.h b/arch_init.h
index 7cc3fa7..456637d 100644
--- a/arch_init.h
+++ b/arch_init.h
@@ -37,4 +37,6 @@ int xen_available(void);
 #define RAM_SAVE_FLAG_EOS      0x10
 #define RAM_SAVE_FLAG_CONTINUE 0x20
 
+#define RAM_SAVE_VERSION_ID     4 /* currently version 4 */
+
 #endif
diff --git a/vl.c b/vl.c
index 23ab3a3..62dc343 100644
--- a/vl.c
+++ b/vl.c
@@ -3436,8 +3436,8 @@ int main(int argc, char **argv, char **envp)
     default_drive(default_sdcard, snapshot, machine->use_scsi,
                   IF_SD, 0, SD_OPTS);
 
-    register_savevm_live(NULL, "ram", 0, 4, NULL, ram_save_live, NULL,
-                         ram_load, NULL);
+    register_savevm_live(NULL, "ram", 0, RAM_SAVE_VERSION_ID, NULL,
+                         ram_save_live, NULL, ram_load, NULL);
 
     if (nb_numa_nodes > 0) {
         int i;
-- 
1.7.1.1

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