kvm: Publicize kvm_irqchip_release_virq

This allows to drop routes created by kvm_irqchip_add_irq/msi_route
again.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NAvi Kivity <avi@redhat.com>

kvm-all.c

@@ -955,7 +955,7 @@ int kvm_irqchip_commit_routes(KVMState *s)
     return kvm_vm_ioctl(s, KVM_SET_GSI_ROUTING, s->irq_routes);
 }
 
-static void kvm_irqchip_release_virq(KVMState *s, int virq)
+void kvm_irqchip_release_virq(KVMState *s, int virq)
 {
     struct kvm_irq_routing_entry *e;
     int i;

kvm-stub.c

@@ -136,3 +136,7 @@ int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg)
 {
     return -ENOSYS;
 }
+
+void kvm_irqchip_release_virq(KVMState *s, int virq)
+{
+}

kvm.h

@@ -215,4 +215,5 @@ int kvm_set_ioeventfd_mmio(int fd, uint32_t adr, uint32_t val, bool assign,
 int kvm_set_ioeventfd_pio_word(int fd, uint16_t adr, uint16_t val, bool assign);
 
 int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg);
+void kvm_irqchip_release_virq(KVMState *s, int virq);
 #endif