Hi Prakhar, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on arm64/for-next/core] [also build test WARNING on powerpc/next soc/for-next v5.7 next-20200605] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Prakhar-Srivastava/Adding-suppor... base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core config: arm64-randconfig-r012-20200607 (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project e429cffd4f228f70c1d9df0e5d77c08590dd9766) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): int arch_ima_add_kexec_buffer(struct kimage *image, unsigned long load_addr, ^ arch/arm64/kernel/machine_kexec_file.c:50:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int arch_ima_add_kexec_buffer(struct kimage *image, unsigned long load_addr, ^ static 1 warning generated. vim +/arch_ima_add_kexec_buffer +50 arch/arm64/kernel/machine_kexec_file.c 41 42 /** 43 * arch_ima_add_kexec_buffer - do arch-specific steps to add the IMA buffer 44 * 45 * Architectures should use this function to pass on the IMA buffer 46 * information to the next kernel. 47 * 48 * Return: 0 on success, negative errno on error. 49 */ 51 size_t size) 52 { 53 image->arch.ima_buffer_addr = load_addr; 54 image->arch.ima_buffer_size = size; 55 return 0; 56 } 57 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org