diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index ba9fb4a9762d69f754b1bb2c65047714c6633f2c..3a2cea6162832d838d0d45d1aefbe2a615771843 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -68,7 +68,7 @@ struct kvm_io_range {
 	struct kvm_io_device *dev;
 };
 
-#define NR_IOBUS_DEVS 300
+#define NR_IOBUS_DEVS 1000
 
 struct kvm_io_bus {
 	int                   dev_count;