tree:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git 
topic/ppc-kvm
head:   5af8497e01ed97410b2f19ca8320a3bcdcfe267b
commit: da467d188ec7dd17770d813226cd92329e9b5b3b [10/11] KVM: PPC: Add support 
for nestedv2 guests
config: powerpc-ppc64_defconfig 
(https://download.01.org/0day-ci/archive/20230913/202309130935.bj7eusw4-...@intel.com/config)
compiler: powerpc64-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): 
(https://download.01.org/0day-ci/archive/20230913/202309130935.bj7eusw4-...@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 <l...@intel.com>
| Closes: 
https://lore.kernel.org/oe-kbuild-all/202309130935.bj7eusw4-...@intel.com/

All errors (new ones prefixed by >>):

   arch/powerpc/kvm/book3s_hv_nestedv2.c: In function 
'gs_msg_ops_vcpu_refresh_info':
>> arch/powerpc/kvm/book3s_hv_nestedv2.c:465:29: error: variable 'amor' set but 
>> not used [-Werror=unused-but-set-variable]
     465 |                         u64 amor;
         |                             ^~~~
   cc1: all warnings being treated as errors


vim +/amor +465 arch/powerpc/kvm/book3s_hv_nestedv2.c

   361  
   362  static int gs_msg_ops_vcpu_refresh_info(struct kvmppc_gs_msg *gsm,
   363                                          struct kvmppc_gs_buff *gsb)
   364  {
   365          struct kvmppc_gs_parser gsp = { 0 };
   366          struct kvmhv_nestedv2_io *io;
   367          struct kvmppc_gs_bitmap *valids;
   368          struct kvm_vcpu *vcpu;
   369          struct kvmppc_gs_elem *gse;
   370          vector128 v;
   371          int rc, i;
   372          u16 iden;
   373  
   374          vcpu = gsm->data;
   375  
   376          rc = kvmppc_gse_parse(&gsp, gsb);
   377          if (rc < 0)
   378                  return rc;
   379  
   380          io = &vcpu->arch.nestedv2_io;
   381          valids = &io->valids;
   382  
   383          kvmppc_gsp_for_each(&gsp, iden, gse)
   384          {
   385                  switch (iden) {
   386                  case KVMPPC_GSID_DSCR:
   387                          vcpu->arch.dscr = kvmppc_gse_get_u64(gse);
   388                          break;
   389                  case KVMPPC_GSID_MMCRA:
   390                          vcpu->arch.mmcra = kvmppc_gse_get_u64(gse);
   391                          break;
   392                  case KVMPPC_GSID_HFSCR:
   393                          vcpu->arch.hfscr = kvmppc_gse_get_u64(gse);
   394                          break;
   395                  case KVMPPC_GSID_PURR:
   396                          vcpu->arch.purr = kvmppc_gse_get_u64(gse);
   397                          break;
   398                  case KVMPPC_GSID_SPURR:
   399                          vcpu->arch.spurr = kvmppc_gse_get_u64(gse);
   400                          break;
   401                  case KVMPPC_GSID_AMR:
   402                          vcpu->arch.amr = kvmppc_gse_get_u64(gse);
   403                          break;
   404                  case KVMPPC_GSID_UAMOR:
   405                          vcpu->arch.uamor = kvmppc_gse_get_u64(gse);
   406                          break;
   407                  case KVMPPC_GSID_SIAR:
   408                          vcpu->arch.siar = kvmppc_gse_get_u64(gse);
   409                          break;
   410                  case KVMPPC_GSID_SDAR:
   411                          vcpu->arch.sdar = kvmppc_gse_get_u64(gse);
   412                          break;
   413                  case KVMPPC_GSID_IAMR:
   414                          vcpu->arch.iamr = kvmppc_gse_get_u64(gse);
   415                          break;
   416                  case KVMPPC_GSID_DAWR0:
   417                          vcpu->arch.dawr0 = kvmppc_gse_get_u64(gse);
   418                          break;
   419                  case KVMPPC_GSID_DAWR1:
   420                          vcpu->arch.dawr1 = kvmppc_gse_get_u64(gse);
   421                          break;
   422                  case KVMPPC_GSID_DAWRX0:
   423                          vcpu->arch.dawrx0 = kvmppc_gse_get_u32(gse);
   424                          break;
   425                  case KVMPPC_GSID_DAWRX1:
   426                          vcpu->arch.dawrx1 = kvmppc_gse_get_u32(gse);
   427                          break;
   428                  case KVMPPC_GSID_CIABR:
   429                          vcpu->arch.ciabr = kvmppc_gse_get_u64(gse);
   430                          break;
   431                  case KVMPPC_GSID_WORT:
   432                          vcpu->arch.wort = kvmppc_gse_get_u32(gse);
   433                          break;
   434                  case KVMPPC_GSID_PPR:
   435                          vcpu->arch.ppr = kvmppc_gse_get_u64(gse);
   436                          break;
   437                  case KVMPPC_GSID_PSPB:
   438                          vcpu->arch.pspb = kvmppc_gse_get_u32(gse);
   439                          break;
   440                  case KVMPPC_GSID_TAR:
   441                          vcpu->arch.tar = kvmppc_gse_get_u64(gse);
   442                          break;
   443                  case KVMPPC_GSID_FSCR:
   444                          vcpu->arch.fscr = kvmppc_gse_get_u64(gse);
   445                          break;
   446                  case KVMPPC_GSID_EBBHR:
   447                          vcpu->arch.ebbhr = kvmppc_gse_get_u64(gse);
   448                          break;
   449                  case KVMPPC_GSID_EBBRR:
   450                          vcpu->arch.ebbrr = kvmppc_gse_get_u64(gse);
   451                          break;
   452                  case KVMPPC_GSID_BESCR:
   453                          vcpu->arch.bescr = kvmppc_gse_get_u64(gse);
   454                          break;
   455                  case KVMPPC_GSID_IC:
   456                          vcpu->arch.ic = kvmppc_gse_get_u64(gse);
   457                          break;
   458                  case KVMPPC_GSID_CTRL:
   459                          vcpu->arch.ctrl = kvmppc_gse_get_u64(gse);
   460                          break;
   461                  case KVMPPC_GSID_PIDR:
   462                          vcpu->arch.pid = kvmppc_gse_get_u32(gse);
   463                          break;
   464                  case KVMPPC_GSID_AMOR: {
 > 465                          u64 amor;
   466  
   467                          amor = kvmppc_gse_get_u64(gse);
   468                          break;
   469                  }
   470                  case KVMPPC_GSID_VRSAVE:
   471                          vcpu->arch.vrsave = kvmppc_gse_get_u32(gse);
   472                          break;
   473                  case KVMPPC_GSID_MMCR(0)... KVMPPC_GSID_MMCR(3):
   474                          i = iden - KVMPPC_GSID_MMCR(0);
   475                          vcpu->arch.mmcr[i] = kvmppc_gse_get_u64(gse);
   476                          break;
   477                  case KVMPPC_GSID_SIER(0)... KVMPPC_GSID_SIER(2):
   478                          i = iden - KVMPPC_GSID_SIER(0);
   479                          vcpu->arch.sier[i] = kvmppc_gse_get_u64(gse);
   480                          break;
   481                  case KVMPPC_GSID_PMC(0)... KVMPPC_GSID_PMC(5):
   482                          i = iden - KVMPPC_GSID_PMC(0);
   483                          vcpu->arch.pmc[i] = kvmppc_gse_get_u32(gse);
   484                          break;
   485                  case KVMPPC_GSID_GPR(0)... KVMPPC_GSID_GPR(31):
   486                          i = iden - KVMPPC_GSID_GPR(0);
   487                          vcpu->arch.regs.gpr[i] = 
kvmppc_gse_get_u64(gse);
   488                          break;
   489                  case KVMPPC_GSID_CR:
   490                          vcpu->arch.regs.ccr = kvmppc_gse_get_u32(gse);
   491                          break;
   492                  case KVMPPC_GSID_XER:
   493                          vcpu->arch.regs.xer = kvmppc_gse_get_u64(gse);
   494                          break;
   495                  case KVMPPC_GSID_CTR:
   496                          vcpu->arch.regs.ctr = kvmppc_gse_get_u64(gse);
   497                          break;
   498                  case KVMPPC_GSID_LR:
   499                          vcpu->arch.regs.link = kvmppc_gse_get_u64(gse);
   500                          break;
   501                  case KVMPPC_GSID_NIA:
   502                          vcpu->arch.regs.nip = kvmppc_gse_get_u64(gse);
   503                          break;
   504                  case KVMPPC_GSID_SRR0:
   505                          vcpu->arch.shregs.srr0 = 
kvmppc_gse_get_u64(gse);
   506                          break;
   507                  case KVMPPC_GSID_SRR1:
   508                          vcpu->arch.shregs.srr1 = 
kvmppc_gse_get_u64(gse);
   509                          break;
   510                  case KVMPPC_GSID_SPRG0:
   511                          vcpu->arch.shregs.sprg0 = 
kvmppc_gse_get_u64(gse);
   512                          break;
   513                  case KVMPPC_GSID_SPRG1:
   514                          vcpu->arch.shregs.sprg1 = 
kvmppc_gse_get_u64(gse);
   515                          break;
   516                  case KVMPPC_GSID_SPRG2:
   517                          vcpu->arch.shregs.sprg2 = 
kvmppc_gse_get_u64(gse);
   518                          break;
   519                  case KVMPPC_GSID_SPRG3:
   520                          vcpu->arch.shregs.sprg3 = 
kvmppc_gse_get_u64(gse);
   521                          break;
   522                  case KVMPPC_GSID_DAR:
   523                          vcpu->arch.shregs.dar = kvmppc_gse_get_u64(gse);
   524                          break;
   525                  case KVMPPC_GSID_DSISR:
   526                          vcpu->arch.shregs.dsisr = 
kvmppc_gse_get_u32(gse);
   527                          break;
   528                  case KVMPPC_GSID_MSR:
   529                          vcpu->arch.shregs.msr = kvmppc_gse_get_u64(gse);
   530                          break;
   531                  case KVMPPC_GSID_VTB:
   532                          vcpu->arch.vcore->vtb = kvmppc_gse_get_u64(gse);
   533                          break;
   534                  case KVMPPC_GSID_LPCR:
   535                          vcpu->arch.vcore->lpcr = 
kvmppc_gse_get_u64(gse);
   536                          break;
   537                  case KVMPPC_GSID_TB_OFFSET:
   538                          vcpu->arch.vcore->tb_offset = 
kvmppc_gse_get_u64(gse);
   539                          break;
   540                  case KVMPPC_GSID_FPSCR:
   541                          vcpu->arch.fp.fpscr = kvmppc_gse_get_u64(gse);
   542                          break;
   543                  case KVMPPC_GSID_VSRS(0)... KVMPPC_GSID_VSRS(31):
   544                          kvmppc_gse_get_vector128(gse, &v);
   545                          i = iden - KVMPPC_GSID_VSRS(0);
   546                          memcpy(&vcpu->arch.fp.fpr[i], &v,
   547                                 sizeof(vcpu->arch.fp.fpr[i]));
   548                          break;
   549  #ifdef CONFIG_VSX
   550                  case KVMPPC_GSID_VSCR:
   551                          vcpu->arch.vr.vscr.u[3] = 
kvmppc_gse_get_u32(gse);
   552                          break;
   553                  case KVMPPC_GSID_VSRS(32)... KVMPPC_GSID_VSRS(63):
   554                          i = iden - KVMPPC_GSID_VSRS(32);
   555                          kvmppc_gse_get_vector128(gse, 
&vcpu->arch.vr.vr[i]);
   556                          break;
   557  #endif
   558                  case KVMPPC_GSID_HDAR:
   559                          vcpu->arch.fault_dar = kvmppc_gse_get_u64(gse);
   560                          break;
   561                  case KVMPPC_GSID_HDSISR:
   562                          vcpu->arch.fault_dsisr = 
kvmppc_gse_get_u32(gse);
   563                          break;
   564                  case KVMPPC_GSID_ASDR:
   565                          vcpu->arch.fault_gpa = kvmppc_gse_get_u64(gse);
   566                          break;
   567                  case KVMPPC_GSID_HEIR:
   568                          vcpu->arch.emul_inst = kvmppc_gse_get_u64(gse);
   569                          break;
   570                  case KVMPPC_GSID_DEC_EXPIRY_TB: {
   571                          u64 dw;
   572  
   573                          dw = kvmppc_gse_get_u64(gse);
   574                          vcpu->arch.dec_expires =
   575                                  dw + vcpu->arch.vcore->tb_offset;
   576                          break;
   577                  }
   578                  case KVMPPC_GSID_LOGICAL_PVR:
   579                          vcpu->arch.vcore->arch_compat = 
kvmppc_gse_get_u32(gse);
   580                          break;
   581                  default:
   582                          continue;
   583                  }
   584                  kvmppc_gsbm_set(valids, iden);
   585          }
   586  
   587          return 0;
   588  }
   589  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

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