diff --git a/drivers/lguest/interrupts_and_traps.c b/drivers/lguest/interrupts_and_traps.c
index 6e99adb..9ea26ad 100644
--- a/drivers/lguest/interrupts_and_traps.c
+++ b/drivers/lguest/interrupts_and_traps.c
@@ -511,9 +511,9 @@
 
 	/* Remember the first interrupt is the timer interrupt. */
 	set_bit(0, cpu->irqs_pending);
-	/* If the Guest is actually stopped, we need to wake it up. */
-	if (cpu->halted)
-		wake_up_process(cpu->tsk);
+	/* Guest may be stopped or running on another CPU. */
+	if (!wake_up_process(cpu->tsk))
+		kick_process(cpu->tsk);
 	return HRTIMER_NORESTART;
 }
 
diff --git a/drivers/lguest/lguest_user.c b/drivers/lguest/lguest_user.c
index b8ee103..bcdcf34 100644
--- a/drivers/lguest/lguest_user.c
+++ b/drivers/lguest/lguest_user.c
@@ -24,8 +24,8 @@
 
 	if (on) {
 		cpu->break_out = 1;
-		/* Pop it out of the Guest (may be running on different CPU) */
-		wake_up_process(cpu->tsk);
+		if (!wake_up_process(cpu->tsk))
+			kick_process(cpu->tsk);
 		/* Wait for them to reset it */
 		return wait_event_interruptible(cpu->break_wq, !cpu->break_out);
 	} else {