KFENCE_AREA_END
#define XKVRANGE_VC_SIZE round_up(KFENCE_AREA_END - MODULES_VADDR + 1, PGDIR_SIZE)
#define KASAN_SHADOW_START round_up(KFENCE_AREA_END, PGDIR_SIZE)
KFENCE_AREA_START, KFENCE_AREA_END,
mem_to_shadow((void *)KFENCE_AREA_END));