kvm: Introduce kvm_irqchip_add/remove_irqfd

Add services to associate an eventfd file descriptor as input with an
IRQ line as output. Such a line can be an input pin of an in-kernel
irqchip or a virtual line returned by kvm_irqchip_add_route.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/kvm-stub.c b/kvm-stub.c
index ec351d9067..b4cf03fb7f 100644
--- a/kvm-stub.c
+++ b/kvm-stub.c
@@ -140,3 +140,13 @@ int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg)
 void kvm_irqchip_release_virq(KVMState *s, int virq)
 {
 }
+
+int kvm_irqchip_add_irqfd(KVMState *s, int fd, int virq)
+{
+    return -ENOSYS;
+}
+
+int kvm_irqchip_remove_irqfd(KVMState *s, int fd, int virq)
+{
+    return -ENOSYS;
+}