MAX_PTRS_PER_P4D 25 arch/x86/mm/kasan_init_64.c static p4d_t tmp_p4d_table[MAX_PTRS_PER_P4D] __initdata __aligned(PAGE_SIZE); MAX_PTRS_PER_P4D 21 include/linux/kasan.h extern p4d_t kasan_early_shadow_p4d[MAX_PTRS_PER_P4D]; MAX_PTRS_PER_P4D 37 mm/kasan/init.c p4d_t kasan_early_shadow_p4d[MAX_PTRS_PER_P4D] __page_aligned_bss;