FM / parameters

/sys/module/libahci/parameters

Name	Size	Mode	Actions
ahci_em_messages	4096	0444	edit dl rm
devslp_idle_timeout	4096	0644	edit dl rm
ignore_sss	4096	0444	edit dl rm
skip_host_reset	4096	0444	edit dl rm

Edit: /sys/module/libahci/parameters/ahci_em_messages (4096B)