Hi Tony, I love your patch! Yet something to improve: [auto build test ERROR on linus/master] [cannot apply to v5.3-rc8 next-20190904] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Tony-W-Wang-oc/x86-mce-Add-Zhaoxin-MCE-support/20190909-190435 config: i386-randconfig-b002-201936 (attached as .config) compiler: gcc-7 (Debian 7.4.0-11) 7.4.0 reproduce: # save the attached .config to linux build tree make ARCH=i386 If you fix the issue, kindly add following tag Reported-by: kbuild test robot All errors (new ones prefixed by >>): >> arch/x86/kernel/cpu/mce/core.c:1780:6: error: redefinition of 'mce_zhaoxin_feature_init' void mce_zhaoxin_feature_init(struct cpuinfo_x86 *c) ^~~~~~~~~~~~~~~~~~~~~~~~ In file included from arch/x86/kernel/cpu/mce/core.c:50:0: arch/x86/include/asm/mce.h:356:20: note: previous definition of 'mce_zhaoxin_feature_init' was here static inline void mce_zhaoxin_feature_init(struct cpuinfo_x86 *c) { } ^~~~~~~~~~~~~~~~~~~~~~~~ vim +/mce_zhaoxin_feature_init +1780 arch/x86/kernel/cpu/mce/core.c 1779 > 1780 void mce_zhaoxin_feature_init(struct cpuinfo_x86 *c) 1781 { 1782 struct mce_bank *mce_banks = this_cpu_ptr(mce_banks_array); 1783 1784 /* 1785 * These CPUs bank8 SVAD error may be triggered unexpected when 1786 * bringup virtual machine. it is not hardware bug. Always disable 1787 * bank8 SVAD error by default. 1788 */ 1789 if ((c->x86 == 6 && c->x86_model == 0x19 && 1790 (c->x86_stepping > 3 && c->x86_stepping < 8)) || 1791 (c->x86 == 6 && c->x86_model == 0x1f) || 1792 (c->x86 == 7 && c->x86_model == 0x1b)) { 1793 if (this_cpu_read(mce_num_banks) > 8) 1794 mce_banks[8].ctl = 0; 1795 } 1796 1797 intel_init_cmci(); 1798 mce_adjust_timer = cmci_intel_adjust_timer; 1799 } 1800 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation