FM / format

/sys/devices/amd_l3/format

Name	Size	Mode	Actions
coreid	4096	0444	edit dl rm
enallcores	4096	0444	edit dl rm
enallslices	4096	0444	edit dl rm
event	4096	0444	edit dl rm
sliceid	4096	0444	edit dl rm
threadmask	4096	0444	edit dl rm
umask	4096	0444	edit dl rm

Edit: /sys/devices/amd_l3/format/enallcores (4096B)

cmd: