clear_pgds        224 arch/arm64/mm/kasan_init.c 	clear_pgds(KASAN_SHADOW_START, KASAN_SHADOW_END);
clear_pgds        332 arch/x86/mm/kasan_init_64.c 	clear_pgds(KASAN_SHADOW_START & PGDIR_MASK, KASAN_SHADOW_END);