1 files changed, 29 insertions, 11 deletions

diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 0e0c28574af8..c3290bc186a0 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -84,17 +84,6 @@ static int irq_bindcount[NR_IRQS];
 /* Xen will never allocate port zero for any purpose. */
 #define VALID_EVTCHN(chn)       ((chn) != 0)
 
-/*
- * Force a proper event-channel callback from Xen after clearing the
- * callback mask. We do this in a very simple manner, by making a call
- * down into Xen. The pending flag will be checked by Xen on return.
- */
-void force_evtchn_callback(void)
-{
-        (void)HYPERVISOR_xen_version(0, NULL);
-}
-EXPORT_SYMBOL_GPL(force_evtchn_callback);
-
 static struct irq_chip xen_dynamic_chip;
 
 /* Constructor for packed IRQ information. */
@@ -175,6 +164,12 @@ static inline void set_evtchn(int port)
         sync_set_bit(port, &s->evtchn_pending[0]);
 }
 
+static inline int test_evtchn(int port)
+{
+        struct shared_info *s = HYPERVISOR_shared_info;
+        return sync_test_bit(port, &s->evtchn_pending[0]);
+}
+
 
 /**
  * notify_remote_via_irq - send event to remote end of event channel via irq
@@ -365,6 +360,10 @@ static void unbind_from_irq(unsigned int irq)
                         per_cpu(virq_to_irq, cpu_from_evtchn(evtchn))
                                 [index_from_irq(irq)] = -1;
                         break;
+                case IRQT_IPI:
+                        per_cpu(ipi_to_irq, cpu_from_evtchn(evtchn))
+                                [index_from_irq(irq)] = -1;
+                        break;
                 default:
                         break;
                 }
@@ -743,6 +742,25 @@ void xen_clear_irq_pending(int irq)
                 clear_evtchn(evtchn);
 }
 
+void xen_set_irq_pending(int irq)
+{
+        int evtchn = evtchn_from_irq(irq);
+
+        if (VALID_EVTCHN(evtchn))
+                set_evtchn(evtchn);
+}
+
+bool xen_test_irq_pending(int irq)
+{
+        int evtchn = evtchn_from_irq(irq);
+        bool ret = false;
+
+        if (VALID_EVTCHN(evtchn))
+                ret = test_evtchn(evtchn);
+
+        return ret;
+}
+
 /* Poll waiting for an irq to become pending.  In the usual case, the
    irq will be disabled so it won't deliver an interrupt. */
 void xen_poll_irq(int irq)