diff --git a/libc/kernel/uapi/linux/vhost.h b/libc/kernel/uapi/linux/vhost.h
index a844ec8..53b01c4 100644
--- a/libc/kernel/uapi/linux/vhost.h
+++ b/libc/kernel/uapi/linux/vhost.h
@@ -63,4 +63,5 @@
 #define VHOST_VDPA_SET_VRING_ENABLE _IOW(VHOST_VIRTIO, 0x75, struct vhost_vring_state)
 #define VHOST_VDPA_GET_VRING_NUM _IOR(VHOST_VIRTIO, 0x76, __u16)
 #define VHOST_VDPA_SET_CONFIG_CALL _IOW(VHOST_VIRTIO, 0x77, int)
+#define VHOST_VDPA_GET_IOVA_RANGE _IOR(VHOST_VIRTIO, 0x78, struct vhost_vdpa_iova_range)
 #endif