Messages in this thread | | | Date | Thu, 8 Feb 2024 00:11:36 +0800 | From | kernel test robot <> | Subject | arch/x86/kernel/cpu/intel.c:673:34: warning: variable 'l2' set but not used |
| |
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 6d280f4d760e3bcb4a8df302afebf085b65ec982 commit: 807e9bc8e2fe6b4907f9f77fd073f7ef5073af29 x86/CPU: Move cpu_detect_cache_sizes() into init_intel_cacheinfo() date: 6 years ago config: x86_64-randconfig-x051-20230705 (https://download.01.org/0day-ci/archive/20240208/202402080007.mX2pYVVF-lkp@intel.com/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240208/202402080007.mX2pYVVF-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202402080007.mX2pYVVF-lkp@intel.com/
All warnings (new ones prefixed by >>):
arch/x86/kernel/cpu/intel.c: In function 'init_intel': >> arch/x86/kernel/cpu/intel.c:673:34: warning: variable 'l2' set but not used [-Wunused-but-set-variable] 673 | unsigned int l1, l2; | ^~ arch/x86/kernel/cpu/intel.o: warning: objtool: init_intel_misc_features()+0x1d7: sibling call from callable instruction with modified stack frame arch/x86/kernel/cpu/intel.o: warning: objtool: init_intel_energy_perf()+0x9b: sibling call from callable instruction with modified stack frame arch/x86/kernel/cpu/intel.o: warning: objtool: detect_tme()+0x150: sibling call from callable instruction with modified stack frame arch/x86/kernel/cpu/intel.o: warning: objtool: early_init_intel()+0x583: sibling call from callable instruction with modified stack frame
vim +/l2 +673 arch/x86/kernel/cpu/intel.c
635 636 static void init_intel(struct cpuinfo_x86 *c) 637 { 638 early_init_intel(c); 639 640 intel_workarounds(c); 641 642 /* 643 * Detect the extended topology information if available. This 644 * will reinitialise the initial_apicid which will be used 645 * in init_intel_cacheinfo() 646 */ 647 detect_extended_topology(c); 648 649 if (!cpu_has(c, X86_FEATURE_XTOPOLOGY)) { 650 /* 651 * let's use the legacy cpuid vector 0x1 and 0x4 for topology 652 * detection. 653 */ 654 c->x86_max_cores = detect_num_cpu_cores(c); 655 #ifdef CONFIG_X86_32 656 detect_ht(c); 657 #endif 658 } 659 660 init_intel_cacheinfo(c); 661 662 if (c->cpuid_level > 9) { 663 unsigned eax = cpuid_eax(10); 664 /* Check for version and the number of counters */ 665 if ((eax & 0xff) && (((eax>>8) & 0xff) > 1)) 666 set_cpu_cap(c, X86_FEATURE_ARCH_PERFMON); 667 } 668 669 if (cpu_has(c, X86_FEATURE_XMM2)) 670 set_cpu_cap(c, X86_FEATURE_LFENCE_RDTSC); 671 672 if (boot_cpu_has(X86_FEATURE_DS)) { > 673 unsigned int l1, l2; 674 675 rdmsr(MSR_IA32_MISC_ENABLE, l1, l2); 676 if (!(l1 & (1<<11))) 677 set_cpu_cap(c, X86_FEATURE_BTS); 678 if (!(l1 & (1<<12))) 679 set_cpu_cap(c, X86_FEATURE_PEBS); 680 } 681 682 if (c->x86 == 6 && boot_cpu_has(X86_FEATURE_CLFLUSH) && 683 (c->x86_model == 29 || c->x86_model == 46 || c->x86_model == 47)) 684 set_cpu_bug(c, X86_BUG_CLFLUSH_MONITOR); 685 686 if (c->x86 == 6 && boot_cpu_has(X86_FEATURE_MWAIT) && 687 ((c->x86_model == INTEL_FAM6_ATOM_GOLDMONT))) 688 set_cpu_bug(c, X86_BUG_MONITOR); 689
-- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
| |