Hi Coly, I love your patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v4.18-rc5 next-20180716] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Coly-Li/add-crc64-calculation-as-kernel-library/20180717-025930 config: i386-allyesconfig (attached as .config) compiler: gcc-7 (Debian 7.3.0-16) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=i386 All errors (new ones prefixed by >>): >> lib/gen_crc64table.c:21:10: fatal error: ../usr/include/asm/byteorder.h: No such file or directory #include "../usr/include/asm/byteorder.h" ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ compilation terminated. vim +21 lib/gen_crc64table.c > 21 #include "../usr/include/asm/byteorder.h" 22 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation