Hi Shawn, Thank you for the patch! Yet something to improve: [auto build test ERROR on powerpc/next] [also build test ERROR on v5.1 next-20190514] [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/Shawn-Landden/Add-simd-h-implementation/20190515-062235 base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next config: powerpc-mpc836x_mds_defconfig (attached as .config) compiler: powerpc-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree GCC_VERSION=7.2.0 make.cross ARCH=powerpc If you fix the issue, kindly add following tag Reported-by: kbuild test robot All errors (new ones prefixed by >>): >> arch/powerpc/kernel/process.c:194:13: error: 'interrupted_kernel_fpu_idle' defined but not used [-Werror=unused-function] static bool interrupted_kernel_fpu_idle(void) ^~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors vim +/interrupted_kernel_fpu_idle +194 arch/powerpc/kernel/process.c 193 > 194 static bool interrupted_kernel_fpu_idle(void) 195 { 196 return !kernel_fpu_disabled(); 197 } 198 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation