KVM: ARM: VGIC: Optimize the vGIC vgic_update_irq_pending function.

When vgic_update_irq_pending with level-sensitive false, it is need to
deactivates an interrupt, and, it can go to out directly.
Here return a false value, because it will be not need to kick.

Signed-off-by: wanghaibin <wanghaibin.wang@huawei.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
index 3aaca49de325..5acf2c93f616 100644
--- a/virt/kvm/arm/vgic.c
+++ b/virt/kvm/arm/vgic.c
@@ -1646,6 +1646,9 @@ static bool vgic_update_irq_pending(struct kvm *kvm, int cpuid,
                 } else {
                         vgic_dist_irq_clear_pending(vcpu, irq_num);
                 }
+
+                ret = false;
+                goto out;
         }
 
         enabled = vgic_irq_is_enabled(vcpu, irq_num);