372 	vq->log_used = false;  in vhost_vq_reset()
1761 				  bool log_used,  in vq_log_used_access_ok()  argument
1769 	return !log_used || log_access_ok(log_base, log_addr,  in vq_log_used_access_ok()
1780 		vq_log_used_access_ok(vq, log_base, vq->log_used, vq->log_addr);  in vq_log_access_ok()
1925 	vq->log_used = !!(a.flags & (0x1 << VHOST_VRING_F_LOG));  in vhost_vring_set_addr()
2284 static int log_used(struct vhost_virtqueue *vq, u64 used_offset, u64 len)  in log_used()  function
2348 	if (unlikely(vq->log_used)) {  in vhost_update_used_flags()
2353 		log_used(vq, (used - (void __user *)vq->used),  in vhost_update_used_flags()
2365 	if (unlikely(vq->log_used)) {  in vhost_update_avail_event()
2371 		log_used(vq, (used - (void __user *)vq->used),  in vhost_update_avail_event()
2730 	if (unlikely(vq->log_used)) {  in __vhost_add_used_n()
2734 		log_used(vq, ((void __user *)used - (void __user *)vq->used),  in __vhost_add_used_n()
2772 	if (unlikely(vq->log_used)) {  in vhost_add_used_n()
2776 		log_used(vq, offsetof(struct vring_used, idx),  in vhost_add_used_n()