kvm: irqfd support

Add API to assign/deassign irqfd to kvm.
Add stub so that users do not have to use
ifdefs.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/kvm.h b/kvm.h
index c63e31404..65a4ee2ec 100644
--- a/kvm.h
+++ b/kvm.h
@@ -183,5 +183,15 @@ int kvm_set_ioeventfd_pio_word(int fd, uint16_t adr, uint16_t val, bool assign)
 }
 #endif
 
+#if defined(KVM_IRQFD) && defined(CONFIG_KVM)
+int kvm_set_irqfd(int gsi, int fd, bool assigned);
+#else
+static inline
+int kvm_set_irqfd(int gsi, int fd, bool assigned)
+{
+    return -ENOSYS;
+}
+#endif
+
 #endif
 #endif