ARCH_LOW_ADDRESS_LIMIT   94 arch/arm64/include/asm/processor.h #define ARCH_LOW_ADDRESS_LIMIT	(arm64_dma_phys_limit - 1)
ARCH_LOW_ADDRESS_LIMIT  334 arch/s390/include/asm/processor.h #define ARCH_LOW_ADDRESS_LIMIT	0x7fffffffUL
ARCH_LOW_ADDRESS_LIMIT  347 include/linux/memblock.h #define ARCH_LOW_ADDRESS_LIMIT  0xffffffffUL