LOWMEM_LIMIT 51 arch/csky/kernel/setup.c else if (size < PFN_DOWN(LOWMEM_LIMIT - PHYS_OFFSET_OFFSET)) { LOWMEM_LIMIT 57 arch/csky/kernel/setup.c PFN_DOWN(LOWMEM_LIMIT - PHYS_OFFSET_OFFSET); LOWMEM_LIMIT 55 arch/csky/mm/cachev1.c unlikely(start >= PAGE_OFFSET + LOWMEM_LIMIT)) {