__ARCH_HAS_4LEVEL_HACK  595 include/asm-generic/tlb.h #ifndef __ARCH_HAS_4LEVEL_HACK
__ARCH_HAS_4LEVEL_HACK 1864 include/linux/mm.h #if defined(CONFIG_MMU) && !defined(__ARCH_HAS_4LEVEL_HACK)
__ARCH_HAS_4LEVEL_HACK 4114 mm/memory.c    #ifndef __ARCH_HAS_4LEVEL_HACK