#unconditional
IORING_FEAT_SINGLE_MMAP
IORING_FEAT_NODROP
IORING_FEAT_SUBMIT_STABLE
IORING_FEAT_RW_CUR_POS
IORING_FEAT_CUR_PERSONALITY
IORING_FEAT_FAST_POLL
IORING_FEAT_POLL_32BITS
IORING_FEAT_SQPOLL_NONFIXED
IORING_FEAT_EXT_ARG
IORING_FEAT_NATIVE_WORKERS
IORING_FEAT_RSRC_TAGS
IORING_FEAT_CQE_SKIP
IORING_FEAT_LINKED_FILE
IORING_FEAT_REG_REG_RING