diff --git a/input.c b/input.c
index 6b5c2c3371..6968b31781 100644
--- a/input.c
+++ b/input.c
@@ -130,7 +130,7 @@ void qemu_remove_led_event_handler(QEMUPutLEDEntry *entry)
 
 void kbd_put_keycode(int keycode)
 {
-    if (!runstate_is_running()) {
+    if (!runstate_is_running() && !runstate_check(RUN_STATE_SUSPENDED)) {
         return;
     }
     if (qemu_put_kbd_event) {
@@ -154,7 +154,7 @@ void kbd_mouse_event(int dx, int dy, int dz, int buttons_state)
     void *mouse_event_opaque;
     int width, height;
 
-    if (!runstate_is_running()) {
+    if (!runstate_is_running() && !runstate_check(RUN_STATE_SUSPENDED)) {
         return;
     }
     if (QTAILQ_EMPTY(&mouse_handlers)) {
diff --git a/migration.c b/migration.c
index 94f7839e8b..f9e968ee2a 100644
--- a/migration.c
+++ b/migration.c
@@ -252,6 +252,7 @@ static void migrate_fd_put_ready(void *opaque)
         int old_vm_running = runstate_is_running();
 
         DPRINTF("done iterating\n");
+        qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER);
         vm_stop_force_state(RUN_STATE_FINISH_MIGRATE);
 
         if (qemu_savevm_state_complete(s->file) < 0) {
diff --git a/monitor.c b/monitor.c
index 8946a100c0..12a6fe25ad 100644
--- a/monitor.c
+++ b/monitor.c
@@ -89,8 +89,8 @@
  *              TODO lift the restriction
  * 'i'          32 bit integer
  * 'l'          target long (32 or 64 bit)
- * 'M'          just like 'l', except in user mode the value is
- *              multiplied by 2^20 (think Mebibyte)
+ * 'M'          Non-negative target long (32 or 64 bit), in user mode the
+ *              value is multiplied by 2^20 (think Mebibyte)
  * 'o'          octets (aka bytes)
  *              user mode accepts an optional T, t, G, g, M, m, K, k
  *              suffix, which multiplies the value by 2^40 for
@@ -3120,11 +3120,15 @@ static int64_t expr_unary(Monitor *mon)
         n = 0;
         break;
     default:
+        errno = 0;
 #if TARGET_PHYS_ADDR_BITS > 32
         n = strtoull(pch, &p, 0);
 #else
         n = strtoul(pch, &p, 0);
 #endif
+        if (errno == ERANGE) {
+            expr_error(mon, "number too large");
+        }
         if (pch == p) {
             expr_error(mon, "invalid char in expression");
         }
@@ -3618,6 +3622,10 @@ static const mon_cmd_t *monitor_parse_command(Monitor *mon,
                     monitor_printf(mon, "integer is for 32-bit values\n");
                     goto fail;
                 } else if (c == 'M') {
+                    if (val < 0) {
+                        monitor_printf(mon, "enter a positive value\n");
+                        goto fail;
+                    }
                     val <<= 20;
                 }
                 qdict_put(qdict, key, qint_from_int(val));
diff --git a/qapi-schema.json b/qapi-schema.json
index 4279259bc1..2ca7195d25 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -92,6 +92,8 @@
 #
 # @debug: QEMU is running on a debugger
 #
+# @finish-migrate: guest is paused to finish the migration process
+#
 # @inmigrate: guest is paused waiting for an incoming migration
 #
 # @internal-error: An internal error that prevents further guest execution
@@ -106,8 +108,6 @@
 #
 # @prelaunch: QEMU was started with -S and guest has not started
 #
-# @finish-migrate: guest is paused to finish the migration process
-#
 # @restore-vm: guest is paused to restore VM state
 #
 # @running: guest is actively running
@@ -116,12 +116,14 @@
 #
 # @shutdown: guest is shut down (and -no-shutdown is in use)
 #
+# @suspended: guest is suspended (ACPI S3)
+#
 # @watchdog: the watchdog action is configured to pause and has been triggered
 ##
 { 'enum': 'RunState',
   'data': [ 'debug', 'inmigrate', 'internal-error', 'io-error', 'paused',
             'postmigrate', 'prelaunch', 'finish-migrate', 'restore-vm',
-            'running', 'save-vm', 'shutdown', 'watchdog' ] }
+            'running', 'save-vm', 'shutdown', 'suspended', 'watchdog' ] }
 
 ##
 # @StatusInfo:
diff --git a/qmp.c b/qmp.c
index a182b5197e..fee9fb2a9d 100644
--- a/qmp.c
+++ b/qmp.c
@@ -151,6 +151,8 @@ void qmp_cont(Error **errp)
                runstate_check(RUN_STATE_SHUTDOWN)) {
         error_set(errp, QERR_RESET_REQUIRED);
         return;
+    } else if (runstate_check(RUN_STATE_SUSPENDED)) {
+        return;
     }
 
     bdrv_iterate(iostatus_bdrv_it, NULL);
diff --git a/vl.c b/vl.c
index ae91a8ab01..5e0080b98f 100644
--- a/vl.c
+++ b/vl.c
@@ -366,6 +366,11 @@ static const RunStateTransition runstate_transitions_def[] = {
     { RUN_STATE_SHUTDOWN, RUN_STATE_PAUSED },
     { RUN_STATE_SHUTDOWN, RUN_STATE_FINISH_MIGRATE },
 
+    { RUN_STATE_DEBUG, RUN_STATE_SUSPENDED },
+    { RUN_STATE_RUNNING, RUN_STATE_SUSPENDED },
+    { RUN_STATE_SUSPENDED, RUN_STATE_RUNNING },
+    { RUN_STATE_SUSPENDED, RUN_STATE_FINISH_MIGRATE },
+
     { RUN_STATE_WATCHDOG, RUN_STATE_RUNNING },
     { RUN_STATE_WATCHDOG, RUN_STATE_FINISH_MIGRATE },
 
@@ -1288,7 +1293,6 @@ static pid_t shutdown_pid;
 static int powerdown_requested;
 static int debug_requested;
 static int suspend_requested;
-static bool is_suspended;
 static NotifierList suspend_notifiers =
     NOTIFIER_LIST_INITIALIZER(suspend_notifiers);
 static NotifierList wakeup_notifiers =
@@ -1420,13 +1424,13 @@ static void qemu_system_suspend(void)
 {
     pause_all_vcpus();
     notifier_list_notify(&suspend_notifiers, NULL);
+    runstate_set(RUN_STATE_SUSPENDED);
     monitor_protocol_event(QEVENT_SUSPEND, NULL);
-    is_suspended = true;
 }
 
 void qemu_system_suspend_request(void)
 {
-    if (is_suspended) {
+    if (runstate_check(RUN_STATE_SUSPENDED)) {
         return;
     }
     suspend_requested = 1;
@@ -1441,17 +1445,17 @@ void qemu_register_suspend_notifier(Notifier *notifier)
 
 void qemu_system_wakeup_request(WakeupReason reason)
 {
-    if (!is_suspended) {
+    if (!runstate_check(RUN_STATE_SUSPENDED)) {
         return;
     }
     if (!(wakeup_reason_mask & (1 << reason))) {
         return;
     }
+    runstate_set(RUN_STATE_RUNNING);
     monitor_protocol_event(QEVENT_WAKEUP, NULL);
     notifier_list_notify(&wakeup_notifiers, &reason);
     reset_requested = 1;
     qemu_notify_event();
-    is_suspended = false;
 }
 
 void qemu_system_wakeup_enable(WakeupReason reason, bool enabled)