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memory: Do not print empty PIO root

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Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Jan Kiszka 2011-09-27 15:00:38 +02:00 committed by Avi Kivity
parent 4b474ba7a1
commit 066318109f
1 changed files with 6 additions and 3 deletions

9
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);
}
}