[Qemu-devel] [PATCH 4/5] vmstate: Use version_id when saving

[Eduardo Habkost]

This will allow fields to have version_id > vmsd->version_id, to allow
us to support loading data with higher version_id.

This patch alone is not useful by itself, but it will be useful when
introducing the max_version_id field to VMStateDescription.

Signed-off-by: Eduardo Habkost <ehabk...@redhat.com>
---
 savevm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/savevm.c b/savevm.c
index 16276e7..87773ad 100644
--- a/savevm.c
+++ b/savevm.c
@@ -1766,6 +1766,9 @@ void vmstate_save_state(QEMUFile *f, const 
VMStateDescription *vmsd,
             !field->field_exists(opaque, vmsd->version_id)) {
             continue;
         }
+        if (field->version_id > vmsd->version_id) {
+            continue;
+        }
 
         void *base_addr = opaque + field->offset;
         int i, n_elems = 1;
-- 
1.8.3.1