diff --git a/kvm.h b/kvm.h
index 4ccae8c..7857dbf 100644
--- a/kvm.h
+++ b/kvm.h
@@ -132,6 +132,7 @@
 void kvm_arch_init_irq_routing(KVMState *s);
 
 int kvm_irqchip_set_irq(KVMState *s, int irq, int level);
+int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg);
 
 void kvm_irqchip_add_route(KVMState *s, int gsi, int irqchip, int pin);
 int kvm_irqchip_commit_routes(KVMState *s);