migration: Move check_migratable() into qdev.c

The function is only used once, and nothing else in migration knows
about objects.  Create the function vmstate_device_is_migratable() in
savem.c that really do the bit that is related with migration.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/migration/savevm.c b/migration/savevm.c
index b4f736f5f7..f5e81948e6 100644
--- a/migration/savevm.c
+++ b/migration/savevm.c
@@ -2317,3 +2317,13 @@ void vmstate_register_ram_global(MemoryRegion *mr)
 {
     vmstate_register_ram(mr, NULL);
 }
+
+bool vmstate_check_only_migratable(const VMStateDescription *vmsd)
+{
+    /* check needed if --only-migratable is specified */
+    if (!only_migratable) {
+        return true;
+    }
+
+    return !(vmsd && vmsd->unmigratable);
+}