Hi Suravee, [auto build test ERROR on tip/x86/core] [also build test ERROR on v4.13-rc1 next-20170721] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Suravee-Suthikulpanit/x86-amd-Refactor-topology-extension-related-code/20170724-024344 config: x86_64-randconfig-x007-201730 (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): arch/x86/kernel/cpu/amd.c: In function '__get_topoext': >> arch/x86/kernel/cpu/amd.c:309:19: error: lvalue required as left operand of >> assignment smp_num_siblings = ((ebx >> 8) & 0xff) + 1; ^ At top level: arch/x86/kernel/cpu/amd.c:302:13: warning: '__get_topoext' defined but not used [-Wunused-function] static void __get_topoext(struct cpuinfo_x86 *c) ^~~~~~~~~~~~~ vim +309 arch/x86/kernel/cpu/amd.c ^1da177e arch/i386/kernel/cpu/amd.c Linus Torvalds 2005-04-16 298 11fdd252 arch/x86/kernel/cpu/amd.c Yinghai Lu 2008-09-07 299 /* 1c2d1f62 arch/x86/kernel/cpu/amd.c Suravee Suthikulpanit 2017-07-21 300 * Get topology information via X86_FEATURE_TOPOEXT 4a376ec3 arch/x86/kernel/cpu/amd.c Andreas Herrmann 2009-09-03 301 */ 1c2d1f62 arch/x86/kernel/cpu/amd.c Suravee Suthikulpanit 2017-07-21 302 static void __get_topoext(struct cpuinfo_x86 *c) 4a376ec3 arch/x86/kernel/cpu/amd.c Andreas Herrmann 2009-09-03 303 { 79a8b9aa arch/x86/kernel/cpu/amd.c Borislav Petkov 2017-02-05 304 u32 eax, ebx, ecx, edx; 1c2d1f62 arch/x86/kernel/cpu/amd.c Suravee Suthikulpanit 2017-07-21 305 int cpu = smp_processor_id(); 6057b4d3 arch/x86/kernel/cpu/amd.c Andreas Herrmann 2010-09-30 306 79a8b9aa arch/x86/kernel/cpu/amd.c Borislav Petkov 2017-02-05 307 cpuid(0x8000001e, &eax, &ebx, &ecx, &edx); 79a8b9aa arch/x86/kernel/cpu/amd.c Borislav Petkov 2017-02-05 308 79a8b9aa arch/x86/kernel/cpu/amd.c Borislav Petkov 2017-02-05 @309 smp_num_siblings = ((ebx >> 8) & 0xff) + 1; 79a8b9aa arch/x86/kernel/cpu/amd.c Borislav Petkov 2017-02-05 310 79a8b9aa arch/x86/kernel/cpu/amd.c Borislav Petkov 2017-02-05 311 if (c->x86 == 0x15) 79a8b9aa arch/x86/kernel/cpu/amd.c Borislav Petkov 2017-02-05 312 c->cu_id = ebx & 0xff; b6a50cdd arch/x86/kernel/cpu/amd.c Yazen Ghannam 2016-11-08 313 08b25963 arch/x86/kernel/cpu/amd.c Yazen Ghannam 2017-02-05 314 if (c->x86 >= 0x17) { 08b25963 arch/x86/kernel/cpu/amd.c Yazen Ghannam 2017-02-05 315 c->cpu_core_id = ebx & 0xff; 08b25963 arch/x86/kernel/cpu/amd.c Yazen Ghannam 2017-02-05 316 08b25963 arch/x86/kernel/cpu/amd.c Yazen Ghannam 2017-02-05 317 if (smp_num_siblings > 1) 08b25963 arch/x86/kernel/cpu/amd.c Yazen Ghannam 2017-02-05 318 c->x86_max_cores /= smp_num_siblings; 08b25963 arch/x86/kernel/cpu/amd.c Yazen Ghannam 2017-02-05 319 } 08b25963 arch/x86/kernel/cpu/amd.c Yazen Ghannam 2017-02-05 320 b6a50cdd arch/x86/kernel/cpu/amd.c Yazen Ghannam 2016-11-08 321 /* b6a50cdd arch/x86/kernel/cpu/amd.c Yazen Ghannam 2016-11-08 322 * We may have multiple LLCs if L3 caches exist, so check if we b6a50cdd arch/x86/kernel/cpu/amd.c Yazen Ghannam 2016-11-08 323 * have an L3 cache by looking at the L3 cache CPUID leaf. b6a50cdd arch/x86/kernel/cpu/amd.c Yazen Ghannam 2016-11-08 324 */ b6a50cdd arch/x86/kernel/cpu/amd.c Yazen Ghannam 2016-11-08 325 if (cpuid_edx(0x80000006)) { b6a50cdd arch/x86/kernel/cpu/amd.c Yazen Ghannam 2016-11-08 326 if (c->x86 == 0x17) { b6a50cdd arch/x86/kernel/cpu/amd.c Yazen Ghannam 2016-11-08 327 /* b6a50cdd arch/x86/kernel/cpu/amd.c Yazen Ghannam 2016-11-08 328 * LLC is at the core complex level. b6a50cdd arch/x86/kernel/cpu/amd.c Yazen Ghannam 2016-11-08 329 * Core complex id is ApicId[3]. b6a50cdd arch/x86/kernel/cpu/amd.c Yazen Ghannam 2016-11-08 330 */ b6a50cdd arch/x86/kernel/cpu/amd.c Yazen Ghannam 2016-11-08 331 per_cpu(cpu_llc_id, cpu) = c->apicid >> 3; b6a50cdd arch/x86/kernel/cpu/amd.c Yazen Ghannam 2016-11-08 332 } else { b6a50cdd arch/x86/kernel/cpu/amd.c Yazen Ghannam 2016-11-08 333 /* LLC is at the node level. */ 1c2d1f62 arch/x86/kernel/cpu/amd.c Suravee Suthikulpanit 2017-07-21 334 u8 node_id = ecx & 0xff; 1c2d1f62 arch/x86/kernel/cpu/amd.c Suravee Suthikulpanit 2017-07-21 335 b6a50cdd arch/x86/kernel/cpu/amd.c Yazen Ghannam 2016-11-08 336 per_cpu(cpu_llc_id, cpu) = node_id; b6a50cdd arch/x86/kernel/cpu/amd.c Yazen Ghannam 2016-11-08 337 } b6a50cdd arch/x86/kernel/cpu/amd.c Yazen Ghannam 2016-11-08 338 } 1c2d1f62 arch/x86/kernel/cpu/amd.c Suravee Suthikulpanit 2017-07-21 339 } 1c2d1f62 arch/x86/kernel/cpu/amd.c Suravee Suthikulpanit 2017-07-21 340 :::::: The code at line 309 was first introduced by commit :::::: 79a8b9aa388b0620cc1d525d7c0f0d9a8a85e08e x86/CPU/AMD: Bring back Compute Unit ID :::::: TO: Borislav Petkov <b...@suse.de> :::::: CC: Ingo Molnar <mi...@kernel.org> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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