kqueue is not really a replacement for io_uring. That said, FreeBSD can make a POSIX AIO request signal completion to a kqueue, which is a similar model of asy

kqueue is not really a replacement for io_uring. That said, FreeBSD can make a POSIX AIO request signal completion to a kqueue, which is a similar model of async I/O. But as has been pointed out elsewhere, io_uring is also about making other syscalls asynchronous.