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Subject[ammarfaizi2-block:bp/bp/rc0+ 6/11] arch/x86/kernel/cpu/common.c:1415:10: error: 'x86_cap_flags' undeclared; did you mean 'x86_cap_flag'?
tree:   https://github.com/ammarfaizi2/linux-block bp/bp/rc0+
head: 2d784fc7295963360594f3de64446aa32841c694
commit: c3b9dcd01973935375ca9d0c67044bea7333d4ef [6/11] x86/cpu: Allow feature bit names from /proc/cpuinfo in clearcpuid=
config: i386-tinyconfig (https://download.01.org/0day-ci/archive/20220329/202203292206.ICsY2RKX-lkp@intel.com/config)
compiler: gcc-9 (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0
reproduce (this is a W=1 build):
# https://github.com/ammarfaizi2/linux-block/commit/c3b9dcd01973935375ca9d0c67044bea7333d4ef
git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
git fetch --no-tags ammarfaizi2-block bp/bp/rc0+
git checkout c3b9dcd01973935375ca9d0c67044bea7333d4ef
# save the config file to linux build tree
mkdir build_dir
make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash arch/x86/kernel/cpu/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

arch/x86/kernel/cpu/common.c: In function 'cpu_parse_early_param':
>> arch/x86/kernel/cpu/common.c:1415:10: error: 'x86_cap_flags' undeclared (first use in this function); did you mean 'x86_cap_flag'?
1415 | if (!x86_cap_flags[bit])
| ^~~~~~~~~~~~~
| x86_cap_flag
arch/x86/kernel/cpu/common.c:1415:10: note: each undeclared identifier is reported only once for each function it appears in


vim +1415 arch/x86/kernel/cpu/common.c

1385
1386 if (cmdline_find_option_bool(boot_command_line, "noxsave"))
1387 setup_clear_cpu_cap(X86_FEATURE_XSAVE);
1388
1389 if (cmdline_find_option_bool(boot_command_line, "noxsaveopt"))
1390 setup_clear_cpu_cap(X86_FEATURE_XSAVEOPT);
1391
1392 if (cmdline_find_option_bool(boot_command_line, "noxsaves"))
1393 setup_clear_cpu_cap(X86_FEATURE_XSAVES);
1394
1395 arglen = cmdline_find_option(boot_command_line, "clearcpuid", arg, sizeof(arg));
1396 if (arglen <= 0)
1397 return;
1398
1399 pr_info("Clearing CPUID bits:");
1400
1401 while (argptr) {
1402 bool found __maybe_unused = false;
1403 unsigned int bit;
1404
1405 opt = strsep(&argptr, ",");
1406
1407 /*
1408 * Handle naked numbers first for feature flags which don't
1409 * have names.
1410 */
1411 if (!kstrtouint(opt, 10, &bit)) {
1412 if (bit < NCAPINTS * 32) {
1413
1414 /* empty-string, i.e., ""-defined feature flags */
> 1415 if (!x86_cap_flags[bit])
1416 pr_cont(" " X86_CAP_FMT_NUM, x86_cap_flag_num(bit));
1417 else
1418 pr_cont(" " X86_CAP_FMT, x86_cap_flag(bit));
1419
1420 setup_clear_cpu_cap(bit);
1421 taint++;
1422 }
1423 /*
1424 * The assumption is that there are no feature names with only
1425 * numbers in the name thus go to the next argument.
1426 */
1427 continue;
1428 }
1429

--
0-DAY CI Kernel Test Service
https://01.org/lkp

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