monitor: Accept input only byte-wise

This allows to suspend command interpretation and execution
synchronously, e.g. during migration.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

diff --git a/monitor.c b/monitor.c
index ebd0282..96f7876 100644 (file)
--- a/monitor.c
+++ b/monitor.c
@@ -3864,7 +3864,7 @@ static int monitor_can_read(void *opaque)
 {
     Monitor *mon = opaque;
 
-    return (mon->suspend_cnt == 0) ? 128 : 0;
+    return (mon->suspend_cnt == 0) ? 1 : 0;
 }
 
 typedef struct CmdArgs {