arm: Disable maintenance interrupt on successful injection

[jailhouse.git] / hypervisor / arch / arm / irqchip.c

diff --git a/hypervisor/arch/arm/irqchip.c b/hypervisor/arch/arm/irqchip.c
index 7ace3544ef3aef4e2f9aa0e03a3aaa50246526ac..518739000065a56ed4a43f813dd2f7b63e688fd3 100644 (file)
--- a/hypervisor/arch/arm/irqchip.c
+++ b/hypervisor/arch/arm/irqchip.c
@@ -167,10 +167,14 @@ void irqchip_inject_pending(struct per_cpu *cpu_data)
 
        while (pending != NULL) {
                err = irqchip.inject_irq(cpu_data, pending);
-               if (err == -EBUSY)
-                       /* The list registers are full. */
-                       break;
-               else
+               if (err == -EBUSY) {
+                       /*
+                        * The list registers are full, trigger maintenance
+                        * interrupt and leave.
+                        */
+                       irqchip.enable_maint_irq(true);
+                       return;
+               } else {
                        /*
                         * Removal only changes the pointers, but does not
                         * deallocate anything.
@@ -180,9 +184,16 @@ void irqchip_inject_pending(struct per_cpu *cpu_data)
                         * after this removal, which isn't an issue.
                         */
                        irqchip_remove_pending(cpu_data, pending);
+               }
 
                pending = pending->next;
        }
+
+       /*
+        * The software interrupt queue is empty - turn off the maintenance
+        * interrupt.
+        */
+       irqchip.enable_maint_irq(false);
 }
 
 void irqchip_handle_irq(struct per_cpu *cpu_data)