Hi Alex, Thank you for the patch! Yet something to improve: [auto build test ERROR on tip/locking/core] [also build test ERROR on arm/for-next linus/master tip/x86/core v5.6 next-20200404] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Alex-Kogan/Add-NUMA-awareness-to-qspinlock/20200405-045543 base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git f1e67e355c2aafeddf1eac31335709236996d2fe config: i386-alldefconfig (attached as .config) compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0 reproduce: # save the attached .config to linux build tree make ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot All errors (new ones prefixed by >>): arch/x86/kernel/alternative.c: In function 'alternative_instructions': >> arch/x86/kernel/alternative.c:742:2: error: implicit declaration of function 'cna_configure_spin_lock_slowpath' [-Werror=implicit-function-declaration] cna_configure_spin_lock_slowpath(); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/cna_configure_spin_lock_slowpath +742 arch/x86/kernel/alternative.c 741 > 742 cna_configure_spin_lock_slowpath(); 743 744 apply_paravirt(__parainstructions, __parainstructions_end); 745 746 restart_nmi(); 747 alternatives_patched = 1; 748 } 749 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org