arch/x86/events/amd/uncore.c:601:10: sparse: sparse: incorrect type in initializer (different address spaces)
From: kernel test robot
Date: Fri Mar 01 2024 - 20:32:57 EST
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: d17468c6f1f49e6259698f6401b8d7a5b90eac68
commit: 07888daa056e809de0b6b234116b575c11f9f99d perf/x86/amd/uncore: Move discovery and registration
date: 5 months ago
config: x86_64-randconfig-r122-20240301 (https://download.01.org/0day-ci/archive/20240302/202403020941.UCnNA0rh-lkp@xxxxxxxxx/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/20240302/202403020941.UCnNA0rh-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202403020941.UCnNA0rh-lkp@xxxxxxxxx/
sparse warnings: (new ones prefixed by >>)
vim +601 arch/x86/events/amd/uncore.c
582
583 static
584 void amd_uncore_df_ctx_scan(struct amd_uncore *uncore, unsigned int cpu)
585 {
586 union cpuid_0x80000022_ebx ebx;
587 union amd_uncore_info info;
588
589 if (!boot_cpu_has(X86_FEATURE_PERFCTR_NB))
590 return;
591
592 info.split.aux_data = 0;
593 info.split.num_pmcs = NUM_COUNTERS_NB;
594 info.split.cid = topology_die_id(cpu);
595
596 if (pmu_version >= 2) {
597 ebx.full = cpuid_ebx(EXT_PERFMON_DEBUG_FEATURES);
598 info.split.num_pmcs = ebx.split.num_df_pmc;
599 }
600
> 601 *per_cpu_ptr(uncore->info, cpu) = info;
602 }
603
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