diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 0ac7a149e7f297de405d0d38910af12cbbb8ac7d..e4e8e9a745bfd21316c05963d4dc9561fbe073aa 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -763,6 +763,12 @@ int xen_irq_from_pirq(unsigned pirq)
 	return irq;
 }
 
+
+int xen_pirq_from_irq(unsigned irq)
+{
+	return pirq_from_irq(irq);
+}
+EXPORT_SYMBOL_GPL(xen_pirq_from_irq);
 int bind_evtchn_to_irq(unsigned int evtchn)
 {
 	int irq;
diff --git a/include/xen/events.h b/include/xen/events.h
index 932e54051d3eff41b70e6477b22d58f4cc2360c8..9af21e19545ae24d4350d3889259bf1868390206 100644
--- a/include/xen/events.h
+++ b/include/xen/events.h
@@ -95,6 +95,9 @@ int xen_destroy_irq(int irq);
 /* Return irq from pirq */
 int xen_irq_from_pirq(unsigned pirq);
 
+/* Return the pirq allocated to the irq. */
+int xen_pirq_from_irq(unsigned irq);
+
 /* Determine whether to ignore this IRQ if it is passed to a guest. */
 int xen_test_irq_shared(int irq);