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>

1 files changed, 3 insertions, 8 deletions

diff --git a/drivers/lguest/core.c b/drivers/lguest/core.c
index 508569c9571a..a6974e9b8ebf 100644
--- a/drivers/lguest/core.c
+++ b/drivers/lguest/core.c
@@ -209,10 +209,6 @@ int run_guest(struct lg_cpu *cpu, unsigned long __user *user)
                 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 @@ int run_guest(struct lg_cpu *cpu, unsigned long __user *user)
                         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();