LOWMEM_LIMIT - Linux

Symbol: LOWMEM_LIMIT

arch/csky/include/asm/memory.h

#define VMALLOC_START (PAGE_OFFSET + LOWMEM_LIMIT + (PAGE_SIZE * 8))

arch/csky/kernel/setup.c

unsigned long lowmem_size = PFN_DOWN(LOWMEM_LIMIT - PHYS_OFFSET_OFFSET);

arch/csky/mm/cachev1.c

unlikely(start >= PAGE_OFFSET + LOWMEM_LIMIT)) {