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Submit is not a syscall. io_uring_enter is the only syscall that is used while running a ring. That one may submit, wait or both at the same time. Strictly spea
by yxhuvud 6y ago
Submit is not a syscall. io_uring_enter is the only syscall that is used while running a ring. That one may submit, wait or both at the same time. Strictly speaking it isn't necessary but to avoid it you require elevated privileges.
- frevib 6y agoFrom Linux 5.10 you only need CAP_SYS_NICE to perform SQPOLL: https://git.kernel.dk/cgit/linux-block/commit/?h=io_uring-files_struct&id=03a54c18518d196693217aa9f683369eacb01daf https://git.kernel.dk/cgit/linux-block/commit/?h=io_uring-fi...
- yxhuvud 6y agoYes, hence "elevated" and not "root". It is still higher than default, right?