all_end 1304 arch/x86/mm/init_64.c unsigned long all_end; all_end 1324 arch/x86/mm/init_64.c all_end = roundup((unsigned long)_brk_end, PMD_SIZE); all_end 1325 arch/x86/mm/init_64.c set_memory_nx(text_end, (all_end - text_end) >> PAGE_SHIFT);