Hi Robert, kernel test robot noticed the following build errors: [auto build test ERROR on 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0] url: https://github.com/intel-lab-lkp/linux/commits/Robert-Richter/cxl-hdm-Moving-HDM-specific-code-to-core-hdm-c/20240629-045739 base: 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0 patch link: https://lore.kernel.org/r/20240627224615.854162-6-rrichter%40amd.com patch subject: [PATCH 5/5] cxl/acpi: Enable address translation for Zen4 platforms config: loongarch-allmodconfig compiler: loongarch64-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): 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 | Closes: https://lore.kernel.org/oe-kbuild-all/202406291547.ZClwWxgs-lkp@intel.com/ All error/warnings (new ones prefixed by >>): drivers/cxl/acpi.c: In function 'is_amd_zen4': >> drivers/cxl/acpi.c:545:43: error: implicit declaration of function 'boot_cpu_has'; did you mean 'boot_cpu_data'? [-Werror=implicit-function-declaration] 545 | return (IS_ENABLED(CONFIG_X86) && boot_cpu_has(X86_FEATURE_ZEN4)); | ^~~~~~~~~~~~ | boot_cpu_data >> drivers/cxl/acpi.c:545:56: error: 'X86_FEATURE_ZEN4' undeclared (first use in this function); did you mean 'X86_FEATURE_ANY'? 545 | return (IS_ENABLED(CONFIG_X86) && boot_cpu_has(X86_FEATURE_ZEN4)); | ^~~~~~~~~~~~~~~~ | X86_FEATURE_ANY drivers/cxl/acpi.c:545:56: note: each undeclared identifier is reported only once for each function it appears in >> drivers/cxl/acpi.c:546:1: warning: control reaches end of non-void function [-Wreturn-type] 546 | } | ^ cc1: some warnings being treated as errors vim +545 drivers/cxl/acpi.c 542 543 static bool is_amd_zen4(void) 544 { > 545 return (IS_ENABLED(CONFIG_X86) && boot_cpu_has(X86_FEATURE_ZEN4)); > 546 } 547 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki