arch_init/ram_load: add error message for block length mismatch

Makes it easier to debug situations where the source and target have different ram blocks in a device and migration fails due to that, for instance a BAR size change on a PCI device. Signed-off-by: Alon Levy <[email protected]> Signed-off-by: Juan Quintela <[email protected]>
itfvck · Jun 27, 2013 · 87d2f82 · 87d2f82
1 parent 3e50873
commit 87d2f82
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/arch_init.c b/arch_init.c
@@ -808,6 +808,9 @@ static int ram_load(QEMUFile *f, void *opaque, int version_id)
                     QTAILQ_FOREACH(block, &ram_list.blocks, next) {
                         if (!strncmp(id, block->idstr, sizeof(id))) {
                             if (block->length != length) {
+                                fprintf(stderr, "Length mismatch: %s: %ld "
+                                        "in != " RAM_ADDR_FMT "\n", id, length,
+                                        block->length);
                                 ret =  -EINVAL;
                                 goto done;
                             }