Hi Shuai, [FYI, it's a private test report for your RFC patch.] [auto build test ERROR on rafael-pm/linux-next] [also build test ERROR on linux/master helgaas-pci/next linus/master v5.15 next-20211112] [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/Shuai-Xue/ACPI-Move-sdei_init-an... base: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next config: ia64-buildonly-randconfig-r006-20211111 (attached as .config) compiler: ia64-linux-gcc (GCC) 11.2.0 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 # https://github.com/0day-ci/linux/commit/4e2f35c365f1f1e296556da6409ff6ee1... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Shuai-Xue/ACPI-Move-sdei_init-and-ghes_init-ahead/20211112-215451 git checkout 4e2f35c365f1f1e296556da6409ff6ee1f6e8ec5 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=ia64 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 >>): drivers/acpi/pci_root.c: In function 'acpi_pci_root_init': 949 | sdei_init(); | ^~~~~~~~~ | mem_init 950 | ghes_init(); | ^~~~~~~~~ | mem_init cc1: some warnings being treated as errors vim +949 drivers/acpi/pci_root.c 945 946 void __init acpi_pci_root_init(void) 947 { 948 acpi_hest_init(); --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org