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: i386-randconfig-a005-20201014 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): # 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 make W=1 ARCH=i386 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/kernel/asm-offsets_32.c:6, from arch/x86/kernel/asm-offsets.c:27: 1090 | static inline enum efi_secureboot_mode efi_get_secureboot_mode(void) | ^~~~~~~~~~~~~~~~~~~~~~~ include/linux/efi.h: In function 'efi_get_secureboot_mode': 1092 | return efi_secureboot_mode_disabled; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ | efi_secureboot_mode include/linux/efi.h:1092:9: note: each undeclared identifier is reported only once for each function it appears in include/linux/efi.h:1092:9: warning: 'return' with a value, in function returning void [-Wreturn-type] include/linux/efi.h:1090:40: note: declared here 1090 | static inline enum efi_secureboot_mode efi_get_secureboot_mode(void) | ^~~~~~~~~~~~~~~~~~~~~~~ make[2]: *** [scripts/Makefile.build:117: arch/x86/kernel/asm-offsets.s] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [Makefile:1202: prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:185: __sub-make] Error 2 make: Target 'prepare' not remade because of errors. 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