Hi Chester, Thank you for the patch! Yet something to improve: [auto build test ERROR on arm64/for-next/core] [also build test ERROR on efi/next tip/x86/core v5.9 next-20201013] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Chester-Lin/add-ima_arch-support... base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core config: x86_64-randconfig-r003-20201014 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project e7fe3c6dfede8d5781bd000741c3dea7088307a4) 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 x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://github.com/0day-ci/linux/commit/d88d2474c8dbc487055a897d379568b92... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Chester-Lin/add-ima_arch-support-for-ARM64/20201014-184221 git checkout d88d2474c8dbc487055a897d379568b92bb3666e # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from arch/x86/mm/fault.c:19: static inline enum efi_secureboot_mode efi_get_secureboot_mode(void) ^ include/linux/efi.h:1090:20: note: forward declaration of 'enum efi_secureboot_mode' static inline enum efi_secureboot_mode efi_get_secureboot_mode(void) ^ return efi_secureboot_mode_disabled; ^ 2 errors generated. -- In file included from arch/x86/mm/ioremap.c:18: static inline enum efi_secureboot_mode efi_get_secureboot_mode(void) ^ include/linux/efi.h:1090:20: note: forward declaration of 'enum efi_secureboot_mode' static inline enum efi_secureboot_mode efi_get_secureboot_mode(void) ^ return efi_secureboot_mode_disabled; ^ arch/x86/mm/ioremap.c:737:17: warning: no previous prototype for function 'early_memremap_pgprot_adjust' [-Wmissing-prototypes] pgprot_t __init early_memremap_pgprot_adjust(resource_size_t phys_addr, ^ arch/x86/mm/ioremap.c:737:1: note: declare 'static' if the function is not intended to be used outside of this translation unit pgprot_t __init early_memremap_pgprot_adjust(resource_size_t phys_addr, ^ static 1 warning and 2 errors generated. vim +1090 include/linux/efi.h 1084 1085 #ifdef CONFIG_EFI 1086 extern bool efi_runtime_disabled(void); 1087 extern enum efi_secureboot_mode efi_get_secureboot_mode(void); 1088 #else 1089 static inline bool efi_runtime_disabled(void) { return true; } 1091 { 1093 } 1094 #endif 1095 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org