On Thu, Jan 26, 2017 at 11:08:48AM +0530, Amit Kumar wrote:

Hi,
For last several days when I build arm64/defconfig even against
next-20170125, I
get the following error.
arch/arm64/crypto/crc32-arm64.c:1:0: error: unknown feature modifier
?crc?
 /*
  ^
make[1]: *** [arch/arm64/crypto/crc32-arm64.o] Error 1
make: *** [arch/arm64/crypto] Error 2

Have you tried asking on the linux arm mailing list?