KVM: use rcu access function for irq routing
irq routing is rcu protected. Use the proper access functions.
Found by sparse
virt/kvm/irqchip.c:233:13: warning: incorrect type in assignment (different address spaces)
virt/kvm/irqchip.c:233:13: expected struct kvm_irq_routing_table *old
virt/kvm/irqchip.c:233:13: got struct kvm_irq_routing_table [noderef] <asn:4>*irq_routing
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/virt/kvm/irqchip.c b/virt/kvm/irqchip.c
index 31e40c9..b1286c4 100644
--- a/virt/kvm/irqchip.c
+++ b/virt/kvm/irqchip.c
@@ -230,7 +230,7 @@
}
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);