lguest: remove obsolete LHREQ_BREAK call
We no longer need an efficient mechanism to force the Guest back into
host userspace, as each device is serviced without bothering the main
Guest process (aka. the Launcher).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
diff --git a/drivers/lguest/core.c b/drivers/lguest/core.c
index 508569c..a6974e9 100644
--- a/drivers/lguest/core.c
+++ b/drivers/lguest/core.c
@@ -209,10 +209,6 @@
if (signal_pending(current))
return -ERESTARTSYS;
- /* If Waker set break_out, return to Launcher. */
- if (cpu->break_out)
- return -EAGAIN;
-
/* Check if there are any interrupts which can be delivered now:
* if so, this sets up the hander to be executed when we next
* run the Guest. */
@@ -231,13 +227,12 @@
break;
/* If the Guest asked to be stopped, we sleep. The Guest's
- * clock timer or LHREQ_BREAK from the Waker will wake us. */
+ * clock timer will wake us. */
if (cpu->halted) {
set_current_state(TASK_INTERRUPTIBLE);
- /* Just before we sleep, make sure nothing snuck in
+ /* Just before we sleep, make sure no interrupt snuck in
* which we should be doing. */
- if (interrupt_pending(cpu, &more) < LGUEST_IRQS
- || cpu->break_out)
+ if (interrupt_pending(cpu, &more) < LGUEST_IRQS)
set_current_state(TASK_RUNNING);
else
schedule();
