LOONGSON_HIGHMEM_START 17 arch/mips/include/asm/mach-loongson64/mem.h #define LOONGSON_HIGHMEM_START 0x20000000 LOONGSON_HIGHMEM_START 19 arch/mips/include/asm/mach-loongson64/mem.h #define LOONGSON_HIGHMEM_START 0x90000000