Hi Vaibhav, kernel test robot noticed the following build errors:
[auto build test ERROR on powerpc/topic/ppc-kvm] [also build test ERROR on kvm/queue kvm/next mst-vhost/linux-next linus/master v7.2-rc7 next-20260813] [cannot apply to kvm/linux-next] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Vaibhav-Jain/KVM-PPC-Book3S-HV-nestedv2-Don-t-drop-pending-doorbell-across-L2-entry/20260815-070415 base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git topic/ppc-kvm patch link: https://lore.kernel.org/r/20260803034426.44249-1-vaibhav%40linux.ibm.com patch subject: [PATCH] KVM: PPC: Book3S HV nestedv2: Don't drop pending doorbell across L2 entry config: powerpc-allmodconfig (https://download.01.org/0day-ci/archive/20260815/[email protected]/config) compiler: powerpc64-linux-gcc (GCC) 16.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260815/[email protected]/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 <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All errors (new ones prefixed by >>): arch/powerpc/kvm/book3s_hv.c: In function 'kvmhv_vcpu_entry_nestedv2': >> arch/powerpc/kvm/book3s_hv.c:4304:25: error: 'cpu' undeclared (first use in >> this function) 4304 | cpu->arch.doorbell_request = 0; | ^~~ arch/powerpc/kvm/book3s_hv.c:4304:25: note: each undeclared identifier is reported only once for each function it appears in vim +/cpu +4304 arch/powerpc/kvm/book3s_hv.c 4248 4249 static int kvmhv_vcpu_entry_nestedv2(struct kvm_vcpu *vcpu, u64 time_limit, 4250 unsigned long lpcr, u64 *tb) 4251 { 4252 struct kvmhv_nestedv2_io *io; 4253 unsigned long msr, i; 4254 int trap; 4255 long rc; 4256 4257 io = &vcpu->arch.nestedv2_io; 4258 4259 msr = mfmsr(); 4260 kvmppc_msr_hard_disable_set_facilities(vcpu, msr); 4261 if (lazy_irq_pending()) 4262 return 0; 4263 4264 if (vcpu->arch.doorbell_request) 4265 kvmppc_set_dpdes(vcpu, 1); 4266 4267 rc = kvmhv_nestedv2_flush_vcpu(vcpu, time_limit); 4268 if (rc < 0) 4269 return -EINVAL; 4270 4271 kvmppc_gse_put_u64(io->vcpu_run_input, KVMPPC_GSID_LPCR, lpcr); 4272 4273 accumulate_time(vcpu, &vcpu->arch.in_guest); 4274 rc = plpar_guest_run_vcpu(0, vcpu->kvm->arch.lpid, vcpu->vcpu_id, 4275 &trap, &i); 4276 4277 if (rc != H_SUCCESS) { 4278 pr_err("KVM Guest Run VCPU hcall failed\n"); 4279 if (rc == H_INVALID_ELEMENT_ID) 4280 pr_err("KVM: Guest Run VCPU invalid element id at %ld\n", i); 4281 else if (rc == H_INVALID_ELEMENT_SIZE) 4282 pr_err("KVM: Guest Run VCPU invalid element size at %ld\n", i); 4283 else if (rc == H_INVALID_ELEMENT_VALUE) 4284 pr_err("KVM: Guest Run VCPU invalid element value at %ld\n", i); 4285 return -EINVAL; 4286 } 4287 accumulate_time(vcpu, &vcpu->arch.guest_exit); 4288 4289 *tb = mftb(); 4290 kvmppc_gsm_reset(io->vcpu_message); 4291 kvmppc_gsm_reset(io->vcore_message); 4292 kvmppc_gsbm_zero(&io->valids); 4293 4294 rc = kvmhv_nestedv2_parse_output(vcpu); 4295 if (rc < 0) 4296 return -EINVAL; 4297 4298 /* Check if privileged door bell was requested and handled */ 4299 if (vcpu->arch.vcore->dpdes) { 4300 kvmhv_nestedv2_cached_reload(vcpu, KVMPPC_GSID_DPDES); 4301 if (vcpu->arch.vcore->dpdes) 4302 vcpu->arch.doorbell_request |= vcpu->arch.vcore->dpdes; 4303 else > 4304 cpu->arch.doorbell_request = 0; 4305 } else { 4306 vcpu->arch.doorbell_request = 0; 4307 } 4308 4309 timer_rearm_host_dec(*tb); 4310 4311 /* Record context switch and guest_run_time data */ 4312 if (kvmhv_get_l2_counters_status()) 4313 do_trace_nested_cs_time(vcpu); 4314 4315 return trap; 4316 } 4317 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
