Hi Jing, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on f96be2deac9bca3ef5a2b0b66b71fcef8bad586d] url: https://github.com/0day-ci/linux/commits/Jing-Zhang/KVM-statistics-data-fd-based-binary-interface/20210403-064555 base: f96be2deac9bca3ef5a2b0b66b71fcef8bad586d config: i386-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot cocci warnings: (new ones prefixed by >>) >> arch/x86/kvm/x86.c:270:36-37: WARNING: Use ARRAY_SIZE arch/x86/kvm/x86.c:235:34-35: WARNING: Use ARRAY_SIZE vim +270 arch/x86/kvm/x86.c 267 268 struct _kvm_stats_header kvm_vcpu_stats_header = { 269 .name_size = KVM_STATS_NAME_LEN, > 270 .count = sizeof(kvm_vcpu_stats_desc) / sizeof(struct _kvm_stats_desc), 271 .desc_offset = sizeof(struct kvm_stats_header), 272 .data_offset = sizeof(struct kvm_stats_header) + 273 sizeof(kvm_vcpu_stats_desc), 274 }; 275 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org