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SubjectRe: [PATCH 2/4] x86/cpu: Describe hybrid CPUs in cpuinfo_x86
Hi Ricardo,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on tip/x86/core]
[also build test ERROR on tip/master driver-core/driver-core-testing linus/master v5.9-rc7 next-20201002]
[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/Ricardo-Neri/drivers-core-Introduce-CPU-type-sysfs-interface/20201003-091754
base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 238c91115cd05c71447ea071624a4c9fe661f970
config: x86_64-randconfig-a012-20201002 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project bcd05599d0e53977a963799d6ee4f6e0bc21331b)
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
# install x86_64 cross compiling tool for clang build
# apt-get install binutils-x86-64-linux-gnu
# https://github.com/0day-ci/linux/commit/ffe255e2342693ca1a8d96d052c903824595fde8
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Ricardo-Neri/drivers-core-Introduce-CPU-type-sysfs-interface/20201003-091754
git checkout ffe255e2342693ca1a8d96d052c903824595fde8
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64

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:934:17: error: use of undeclared identifier 'X86_FEATURE_HYBRID_CPU'
if (cpu_has(c, X86_FEATURE_HYBRID_CPU))
^
>> arch/x86/kernel/cpu/common.c:934:17: error: use of undeclared identifier 'X86_FEATURE_HYBRID_CPU'
>> arch/x86/kernel/cpu/common.c:934:17: error: use of undeclared identifier 'X86_FEATURE_HYBRID_CPU'
>> arch/x86/kernel/cpu/common.c:934:17: error: use of undeclared identifier 'X86_FEATURE_HYBRID_CPU'
>> arch/x86/kernel/cpu/common.c:934:17: error: use of undeclared identifier 'X86_FEATURE_HYBRID_CPU'
>> arch/x86/kernel/cpu/common.c:934:17: error: use of undeclared identifier 'X86_FEATURE_HYBRID_CPU'
>> arch/x86/kernel/cpu/common.c:934:17: error: use of undeclared identifier 'X86_FEATURE_HYBRID_CPU'
>> arch/x86/kernel/cpu/common.c:934:17: error: use of undeclared identifier 'X86_FEATURE_HYBRID_CPU'
>> arch/x86/kernel/cpu/common.c:934:17: error: use of undeclared identifier 'X86_FEATURE_HYBRID_CPU'
>> arch/x86/kernel/cpu/common.c:934:17: error: use of undeclared identifier 'X86_FEATURE_HYBRID_CPU'
>> arch/x86/kernel/cpu/common.c:934:17: error: use of undeclared identifier 'X86_FEATURE_HYBRID_CPU'
>> arch/x86/kernel/cpu/common.c:934:17: error: use of undeclared identifier 'X86_FEATURE_HYBRID_CPU'
>> arch/x86/kernel/cpu/common.c:934:17: error: use of undeclared identifier 'X86_FEATURE_HYBRID_CPU'
>> arch/x86/kernel/cpu/common.c:934:17: error: use of undeclared identifier 'X86_FEATURE_HYBRID_CPU'
>> arch/x86/kernel/cpu/common.c:934:17: error: use of undeclared identifier 'X86_FEATURE_HYBRID_CPU'
>> arch/x86/kernel/cpu/common.c:934:17: error: use of undeclared identifier 'X86_FEATURE_HYBRID_CPU'
>> arch/x86/kernel/cpu/common.c:934:17: error: use of undeclared identifier 'X86_FEATURE_HYBRID_CPU'
>> arch/x86/kernel/cpu/common.c:934:17: error: use of undeclared identifier 'X86_FEATURE_HYBRID_CPU'
>> arch/x86/kernel/cpu/common.c:934:17: error: use of undeclared identifier 'X86_FEATURE_HYBRID_CPU'
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.

vim +/X86_FEATURE_HYBRID_CPU +934 arch/x86/kernel/cpu/common.c

896
897 void get_cpu_cap(struct cpuinfo_x86 *c)
898 {
899 u32 eax, ebx, ecx, edx;
900
901 /* Intel-defined flags: level 0x00000001 */
902 if (c->cpuid_level >= 0x00000001) {
903 cpuid(0x00000001, &eax, &ebx, &ecx, &edx);
904
905 c->x86_capability[CPUID_1_ECX] = ecx;
906 c->x86_capability[CPUID_1_EDX] = edx;
907 }
908
909 /* Thermal and Power Management Leaf: level 0x00000006 (eax) */
910 if (c->cpuid_level >= 0x00000006)
911 c->x86_capability[CPUID_6_EAX] = cpuid_eax(0x00000006);
912
913 /* Additional Intel-defined flags: level 0x00000007 */
914 if (c->cpuid_level >= 0x00000007) {
915 cpuid_count(0x00000007, 0, &eax, &ebx, &ecx, &edx);
916 c->x86_capability[CPUID_7_0_EBX] = ebx;
917 c->x86_capability[CPUID_7_ECX] = ecx;
918 c->x86_capability[CPUID_7_EDX] = edx;
919
920 /* Check valid sub-leaf index before accessing it */
921 if (eax >= 1) {
922 cpuid_count(0x00000007, 1, &eax, &ebx, &ecx, &edx);
923 c->x86_capability[CPUID_7_1_EAX] = eax;
924 }
925 }
926
927 /* Extended state features: level 0x0000000d */
928 if (c->cpuid_level >= 0x0000000d) {
929 cpuid_count(0x0000000d, 1, &eax, &ebx, &ecx, &edx);
930
931 c->x86_capability[CPUID_D_1_EAX] = eax;
932 }
933
> 934 if (cpu_has(c, X86_FEATURE_HYBRID_CPU))
935 c->x86_cpu_type = cpuid_eax(0x0000001a);
936
937 /* AMD-defined flags: level 0x80000001 */
938 eax = cpuid_eax(0x80000000);
939 c->extended_cpuid_level = eax;
940
941 if ((eax & 0xffff0000) == 0x80000000) {
942 if (eax >= 0x80000001) {
943 cpuid(0x80000001, &eax, &ebx, &ecx, &edx);
944
945 c->x86_capability[CPUID_8000_0001_ECX] = ecx;
946 c->x86_capability[CPUID_8000_0001_EDX] = edx;
947 }
948 }
949
950 if (c->extended_cpuid_level >= 0x80000007) {
951 cpuid(0x80000007, &eax, &ebx, &ecx, &edx);
952
953 c->x86_capability[CPUID_8000_0007_EBX] = ebx;
954 c->x86_power = edx;
955 }
956
957 if (c->extended_cpuid_level >= 0x80000008) {
958 cpuid(0x80000008, &eax, &ebx, &ecx, &edx);
959 c->x86_capability[CPUID_8000_0008_EBX] = ebx;
960 }
961
962 if (c->extended_cpuid_level >= 0x8000000a)
963 c->x86_capability[CPUID_8000_000A_EDX] = cpuid_edx(0x8000000a);
964
965 init_scattered_cpuid_features(c);
966 init_speculation_control(c);
967
968 /*
969 * Clear/Set all flags overridden by options, after probe.
970 * This needs to happen each time we re-probe, which may happen
971 * several times during CPU initialization.
972 */
973 apply_forced_caps(c);
974 }
975

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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