io_getevents

read asynchronous I/O events from the completion queue

sys_io_getevents(aio_context_t ctx_id, long min_nr, long nr, struct io_event *events, struct __kernel_timespec *timeout)

register	value
`g1`	272, the syscall number
`o0`	aio_context_t ctx_id
`o1`	long min_nr
`o2`	long nr
`o3`	struct io_event *events
`o4`	struct __kernel_timespec *timeout
`o0`	the return value

Then run t 0x6d to enter the kernel.

Same syscall on other architectures