migration: Change SaveStateEntry.instance_id into uint32_t
It was always used as 32bit, so define it as used to be clear.
Instead of using -1 as the auto-gen magic value, we switch to
UINT32_MAX. We also make sure that we don't auto-gen this value to
avoid overflowed instance IDs without being noticed.
Suggested-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
diff --git a/stubs/vmstate.c b/stubs/vmstate.c
index 6951d9f..cc4fe41 100644
--- a/stubs/vmstate.c
+++ b/stubs/vmstate.c
@@ -4,7 +4,7 @@
const VMStateDescription vmstate_dummy = {};
int vmstate_register_with_alias_id(VMStateIf *obj,
- int instance_id,
+ uint32_t instance_id,
const VMStateDescription *vmsd,
void *base, int alias_id,
int required_for_version,
