From: Jan Kiszka <jan.kis...@siemens.com>
Signed-off-by: Jan Kiszka <jan.kis...@siemens.com>
Signed-off-by: Avi Kivity <a...@redhat.com>
---
memory.c | 9 ++++++---
1 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/memory.c b/memory.c
index eae67be..19f1d36 100644
--- a/memory.c
+++ b/memory.c
@@ -1360,7 +1360,10 @@ void mtree_info(fprintf_function mon_printf, void *f)
g_free(ml2);
}
- QTAILQ_INIT(&ml_head);
- mon_printf(f, "I/O\n");
- mtree_print_mr(mon_printf, f, address_space_io.root, 0, 0, &ml_head);
+ if (address_space_io.root &&
+ !QTAILQ_EMPTY(&address_space_io.root->subregions)) {
+ QTAILQ_INIT(&ml_head);
+ mon_printf(f, "I/O\n");
+ mtree_print_mr(mon_printf, f, address_space_io.root, 0, 0, &ml_head);
+ }
}
--
1.7.6.3
