错误：

　　arch/arm/mm/alignment.c: In function proc_alignment_write:

　　arch/arm/mm/alignment.c:119: error: read-only variable __r2 used as asm output

　　arch/arm/mm/alignment.c:119: error: read-only variable __r2 used as asm output

　　arch/arm/mm/alignment.c:119: error: read-only variable __r2 used as asm output

　　arch/arm/mm/alignment.c:119: error: read-only variable __r2 used as asm output

　　make[1]: *** [arch/arm/mm/alignment.o] 错误 1

　　make: *** [arch/arm/mm] 错误 2

　　解决办法：选择较低版本的交叉编译器，比如3.4.1。