FM / parameters

/sys/module/intel_idle/parameters

Name	Size	Mode	Actions
force_irq_on	4096	0444	edit dl rm
ibrs_off	4096	0444	edit dl rm
max_cstate	4096	0444	edit dl rm
no_acpi	4096	0444	edit dl rm
no_native	4096	0444	edit dl rm
states_off	4096	0444	edit dl rm
table	4096	0444	edit dl rm
use_acpi	4096	0444	edit dl rm

Edit: /sys/module/intel_idle/parameters/force_irq_on (4096B)