KVM: use rcu access function for irq routing

[linux-2.6-block.git] / virt / kvm / irqchip.c

diff --git a/virt/kvm/irqchip.c b/virt/kvm/irqchip.c
index 31e40c9e81df41de6f8cadb076515677ac5cae9c..b1286c4e0712259fac5d66b9bbc3aaf388d3d3f9 100644 (file)
--- a/virt/kvm/irqchip.c
+++ b/virt/kvm/irqchip.c
@@ -230,7 +230,7 @@ int kvm_set_irq_routing(struct kvm *kvm,
        }
 
        mutex_lock(&kvm->irq_lock);
-       old = kvm->irq_routing;
+       old = rcu_dereference_protected(kvm->irq_routing, 1);
        rcu_assign_pointer(kvm->irq_routing, new);
        kvm_irq_routing_update(kvm);
        kvm_arch_irq_routing_update(kvm);