Hi Kevin, kernel test robot noticed the following build errors:
[auto build test ERROR on 6de23f81a5e08be8fbf5e8d7e9febc72a5b5f27f] url: https://github.com/intel-lab-lkp/linux/commits/Kevin-Brodsky/mm-Introduce-kpkeys/20260228-020115 base: 6de23f81a5e08be8fbf5e8d7e9febc72a5b5f27f patch link: https://lore.kernel.org/r/20260227175518.3728055-24-kevin.brodsky%40arm.com patch subject: [PATCH v6 23/30] arm64: kpkeys: Ensure the linear map can be modified config: arm64-allnoconfig (https://download.01.org/0day-ci/archive/20260228/[email protected]/config) compiler: aarch64-linux-gcc (GCC) 15.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260228/[email protected]/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All errors (new ones prefixed by >>): arch/arm64/mm/mmu.c: In function 'force_pte_mapping': >> arch/arm64/mm/mmu.c:768:17: error: implicit declaration of function >> 'arm64_supports_kpkeys_hardened_pgtables' [-Wimplicit-function-declaration] 768 | arm64_supports_kpkeys_hardened_pgtables(); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -- arch/arm64/mm/pageattr.c: In function 'can_set_direct_map': >> arch/arm64/mm/pageattr.c:100:17: error: implicit declaration of function >> 'arm64_supports_kpkeys_hardened_pgtables' [-Wimplicit-function-declaration] 100 | arm64_supports_kpkeys_hardened_pgtables(); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/arm64_supports_kpkeys_hardened_pgtables +768 arch/arm64/mm/mmu.c 757 758 static inline bool force_pte_mapping(void) 759 { 760 const bool bbml2 = system_capabilities_finalized() ? 761 system_supports_bbml2_noabort() : cpu_supports_bbml2_noabort(); 762 763 if (debug_pagealloc_enabled()) 764 return true; 765 if (bbml2) 766 return false; 767 return rodata_full || arm64_kfence_can_set_direct_map() || is_realm_world() || > 768 arm64_supports_kpkeys_hardened_pgtables(); 769 } 770 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
