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Thu, 29 Oct 2026 09:23:53 +0000 (UTC) Received: from laptop.redhat.corp (headnet04.pony-001.prod.iad2.dc.redhat.com [10.2.32.116]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id B971B3000723; Thu, 29 Oct 2026 09:23:48 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, peter.maydell@linaro.org, shaju.abraham@nutanix.com, khushit.shah@nutanix.com, richard.henderson@linaro.org, pbonzini@redhat.com, skolothumtho@nvidia.com, philmd@oss.qualcomm.com, 7746591750@163.com, maobibo@loongson.cn, harshpb@linux.ibm.com, amachhiw@linux.ibm.com, daniel.barboza@oss.qualcomm.com, milesg@linux.ibm.com, farman@linux.ibm.com, cohuck@redhat.com Cc: armbru@redhat.com, mbawa@redhat.com Subject: [PATCH for-11.2 7/9] target/kvm: Pass an Error handle to kvm_arch_init_vcpu Date: Thu, 29 Oct 2026 10:20:19 +0100 Message-ID: <20261029092307.281287-8-eric.auger@redhat.com> In-Reply-To: <20261029092307.281287-1-eric.auger@redhat.com> References: <20261029092307.281287-1-eric.auger@redhat.com> X-Archived-By: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 X-Mimecast-MFC-PROC-ID: MTVpDn8zqiDV9KGwR41kslHzVLA8yDpPXGoBK4SeCdM_1793265833 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit content-type: text/plain; charset="US-ASCII"; x-default=true Received-SPF: pass client-ip=170.10.133.124; envelope-from=eric.auger@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: 5 X-Spam_score: 0.5 X-Spam_bar: / X-Spam_report: (0.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_SBL_CSS=3.335, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-arm@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: qemu-arm-bounces+qemu-arm=archiver.kernel.org@nongnu.org X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_PASS, SPF_PASS autolearn=unavailable autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 The 2 callers of kvm_arch_init_vcpu(), namely kvm_rebind_vcpus() and kvm_init_vcpu() are passed an Error handle. So it is a pity not using it in kvm_arch_init_vcpu(). Also, in the future, the error handle could be passed to other functions called inside. Signed-off-by: Eric Auger --- include/system/kvm.h | 2 +- accel/kvm/kvm-all.c | 15 +++++++-------- target/arm/kvm.c | 26 +++++++++++++------------- target/i386/kvm/kvm.c | 22 ++++++++++++---------- target/loongarch/kvm/kvm.c | 27 +++++++++------------------ target/ppc/kvm.c | 10 +++++++--- target/riscv/kvm/kvm-cpu.c | 6 +++++- target/s390x/kvm/kvm.c | 2 +- 8 files changed, 55 insertions(+), 55 deletions(-) diff --git a/include/system/kvm.h b/include/system/kvm.h index d29624034c..26d55cc699 100644 --- a/include/system/kvm.h +++ b/include/system/kvm.h @@ -358,7 +358,7 @@ int kvm_arch_get_default_type(MachineState *ms); int kvm_arch_init(MachineState *ms, KVMState *s); int kvm_arch_pre_create_vcpu(CPUState *cpu, Error **errp); -int kvm_arch_init_vcpu(CPUState *cpu); +int kvm_arch_init_vcpu(CPUState *cpu, Error **errp); int kvm_arch_destroy_vcpu(CPUState *cpu); #ifdef TARGET_KVM_HAVE_RESET_PARKED_VCPU diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index db8fba53f3..ddc82f9775 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -504,11 +504,11 @@ static int kvm_rebind_vcpus(Error **errp) } } - ret = kvm_arch_init_vcpu(cpu); + ret = kvm_arch_init_vcpu(cpu, errp); if (ret < 0) { - error_setg_errno(errp, -ret, - "kvm_init_vcpu: kvm_arch_init_vcpu failed (%lu)", - vcpu_id); + error_prepend(errp, + "kvm_init_vcpu: kvm_arch_init_vcpu failed (%lu)", + vcpu_id); } close(cpu->kvm_vcpu_stats_fd); @@ -751,11 +751,10 @@ int kvm_init_vcpu(CPUState *cpu, Error **errp) } } - ret = kvm_arch_init_vcpu(cpu); + ret = kvm_arch_init_vcpu(cpu, errp); if (ret < 0) { - error_setg_errno(errp, -ret, - "kvm_init_vcpu: kvm_arch_init_vcpu failed (%lu)", - kvm_arch_vcpu_id(cpu)); + error_prepend(errp, "kvm_init_vcpu: kvm_arch_init_vcpu failed (%lu)", + kvm_arch_vcpu_id(cpu)); } cpu->kvm_vcpu_stats_fd = kvm_vcpu_ioctl(cpu, KVM_GET_STATS_FD, NULL); diff --git a/target/arm/kvm.c b/target/arm/kvm.c index d454346037..2d37c2bfb4 100644 --- a/target/arm/kvm.c +++ b/target/arm/kvm.c @@ -2015,17 +2015,16 @@ int kvm_arch_pre_create_vcpu(CPUState *cpu, Error **errp) return 0; } -int kvm_arch_init_vcpu(CPUState *cs) +int kvm_arch_init_vcpu(CPUState *cs, Error **errp) { int ret; uint64_t mpidr; ARMCPU *cpu = ARM_CPU(cs); CPUARMState *env = &cpu->env; - Error *local_err = NULL; uint64_t psciver; if (cpu->kvm_target == QEMU_KVM_ARM_TARGET_NONE) { - error_report("KVM is not supported for this guest CPU type"); + error_setg(errp, "KVM is not supported for this guest CPU type"); return -EINVAL; } @@ -2071,16 +2070,19 @@ int kvm_arch_init_vcpu(CPUState *cs) /* Do KVM_ARM_VCPU_INIT ioctl */ ret = kvm_arm_vcpu_init(cpu); if (ret) { + error_setg_errno(errp, -ret, "failed kvm_arm_vcpu_init"); return ret; } if (cpu_isar_feature(aa64_sve, cpu)) { ret = kvm_arm_sve_set_vls(cpu); if (ret) { + error_setg_errno(errp, -ret, "failed kvm_arm_sve_set_vls"); return ret; } ret = kvm_arm_vcpu_finalize(cpu, KVM_ARM_VCPU_SVE); if (ret) { + error_setg_errno(errp, -ret, "failed kvm_arm_vcpu_finalize"); return ret; } } @@ -2089,11 +2091,12 @@ int kvm_arch_init_vcpu(CPUState *cs) psciver = cpu->psci_version; ret = kvm_set_one_reg(cs, KVM_REG_ARM_PSCI_VERSION, &psciver); if (ret) { - error_report("KVM in this kernel does not support PSCI version %d.%d", - (int) PSCI_VERSION_MAJOR(psciver), - (int) PSCI_VERSION_MINOR(psciver)); - error_printf("Consider setting the kvm-psci-version property on the " - "migration source.\n"); + error_setg_errno(errp, -ret, + "KVM in this kernel does not support PSCI version %d.%d", + (int) PSCI_VERSION_MAJOR(psciver), + (int) PSCI_VERSION_MINOR(psciver)); + error_append_hint(errp, "Consider setting the kvm-psci-version property " + "on the migration source.\n"); return ret; } } @@ -2115,16 +2118,13 @@ int kvm_arch_init_vcpu(CPUState *cs) */ ret = kvm_get_one_reg(cs, ARM64_SYS_REG(ARM_CPU_ID_MPIDR), &mpidr); if (ret) { + error_setg_errno(errp, -ret, "failed retrieving MPIDR value"); return ret; } SET_IDREG(&cpu->isar, MPIDR, mpidr); cpu->mp_affinity = mpidr & ARM64_AFFINITY_MASK; - ret = kvm_arm_init_cpreg_list(cpu, &local_err); - if (ret < 0) { - error_report_err(local_err); - } - return ret; + return kvm_arm_init_cpreg_list(cpu, errp); } int kvm_arch_destroy_vcpu(CPUState *cs) diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index da922f72d7..474322b073 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -2218,7 +2218,7 @@ static void kvm_init_pmu_info(struct kvm_cpuid2 *cpuid, X86CPU *cpu) } } -int kvm_arch_init_vcpu(CPUState *cs) +int kvm_arch_init_vcpu(CPUState *cs, Error **errp) { struct { struct kvm_cpuid2 cpuid; @@ -2240,12 +2240,12 @@ int kvm_arch_init_vcpu(CPUState *cs) int kvm_base = KVM_CPUID_SIGNATURE; int max_nested_state_len; int r; - Error *local_err = NULL; if (current_machine->cgs) { r = x86_confidential_guest_check_features( X86_CONFIDENTIAL_GUEST(current_machine->cgs), cs); if (r < 0) { + error_setg(errp, "failed x86_confidential_guest_check_features (%d)", r); return r; } } @@ -2258,6 +2258,7 @@ int kvm_arch_init_vcpu(CPUState *cs) r = kvm_arch_set_tsc_khz(cs); if (r < 0) { + error_setg(errp, "failed setting tsc_khz (%d)", r); return r; } @@ -2285,14 +2286,14 @@ int kvm_arch_init_vcpu(CPUState *cs) * can still proceed and check/expand Hyper-V enlightenments here so legacy * behavior is preserved. */ - if (!kvm_hyperv_expand_features(cpu, &local_err)) { - error_report_err(local_err); + if (!kvm_hyperv_expand_features(cpu, errp)) { return -ENOSYS; } if (hyperv_enabled(cpu)) { r = hyperv_init_vcpu(cpu); if (r) { + error_setg_errno(errp, -r, "failed hyperv_init_vcpu"); return r; } @@ -2371,6 +2372,7 @@ int kvm_arch_init_vcpu(CPUState *cs) r = kvm_xen_init_vcpu(cs); if (r) { + error_setg_errno(errp, -r, "failed kvm_xen_init_vcpu"); return r; } @@ -2419,12 +2421,12 @@ int kvm_arch_init_vcpu(CPUState *cs) ret = kvm_get_mce_cap_supported(cs->kvm_state, &mcg_cap, &banks); if (ret < 0) { - fprintf(stderr, "kvm_get_mce_cap_supported: %s", strerror(-ret)); + error_setg_errno(errp, -ret, "failed kvm_get_mce_cap_supported"); return ret; } if (banks < (env->mcg_cap & MCG_CAP_BANKS_MASK)) { - error_report("kvm: Unsupported MCE bank count (QEMU = %d, KVM = %d)", + error_setg(errp, "kvm: Unsupported MCE bank count (QEMU = %d, KVM = %d)", (int)(env->mcg_cap & MCG_CAP_BANKS_MASK), banks); return -ENOTSUP; } @@ -2432,7 +2434,7 @@ int kvm_arch_init_vcpu(CPUState *cs) unsupported_caps = env->mcg_cap & ~(mcg_cap | MCG_CAP_BANKS_MASK); if (unsupported_caps) { if (unsupported_caps & MCG_LMCE_P) { - error_report("kvm: LMCE not supported"); + error_setg(errp, "kvm: LMCE not supported"); return -ENOTSUP; } warn_report("Unsupported MCG_CAP bits: 0x%" PRIx64, @@ -2442,7 +2444,7 @@ int kvm_arch_init_vcpu(CPUState *cs) env->mcg_cap &= mcg_cap | MCG_CAP_BANKS_MASK; ret = kvm_vcpu_ioctl(cs, KVM_X86_SETUP_MCE, &env->mcg_cap); if (ret < 0) { - fprintf(stderr, "KVM_X86_SETUP_MCE: %s", strerror(-ret)); + error_setg_errno(errp, -ret, "failed KVM_X86_SETUP_MCE"); return ret; } } @@ -2470,9 +2472,8 @@ int kvm_arch_init_vcpu(CPUState *cs) error_setg(&invtsc_mig_blocker, "State blocked by non-migratable CPU device" " (invtsc flag)"); - r = migrate_add_blocker(&invtsc_mig_blocker, &local_err); + r = migrate_add_blocker(&invtsc_mig_blocker, errp); if (r < 0) { - error_report_err(local_err); return r; } } @@ -2501,6 +2502,7 @@ int kvm_arch_init_vcpu(CPUState *cs) cpuid_data.cpuid.padding = 0; r = kvm_vcpu_ioctl(cs, KVM_SET_CPUID2, &cpuid_data); if (r) { + error_setg_errno(errp, -r, "failed KVM_SET_CPUID2"); goto fail; } kvm_init_xsave(env); diff --git a/target/loongarch/kvm/kvm.c b/target/loongarch/kvm/kvm.c index 7ca95181a1..db39267375 100644 --- a/target/loongarch/kvm/kvm.c +++ b/target/loongarch/kvm/kvm.c @@ -1320,11 +1320,10 @@ int kvm_arch_pre_create_vcpu(CPUState *cpu, Error **errp) return 0; } -int kvm_arch_init_vcpu(CPUState *cs) +int kvm_arch_init_vcpu(CPUState *cs, Error **errp) { uint64_t val; int ret; - Error *local_err = NULL; LoongArchCPU *cpu = LOONGARCH_CPU(cs); cpu->vmsentry = qemu_add_vm_change_state_handler( @@ -1334,51 +1333,43 @@ int kvm_arch_init_vcpu(CPUState *cs) brk_insn = val; } - ret = kvm_cpu_check_lsx(cs, &local_err); + ret = kvm_cpu_check_lsx(cs, errp); if (ret < 0) { - error_report_err(local_err); return ret; } - ret = kvm_cpu_check_lasx(cs, &local_err); + ret = kvm_cpu_check_lasx(cs, errp); if (ret < 0) { - error_report_err(local_err); return ret; } - ret = kvm_cpu_check_lbt(cs, &local_err); + ret = kvm_cpu_check_lbt(cs, errp); if (ret < 0) { - error_report_err(local_err); return ret; } - ret = kvm_cpu_check_pmu(cs, &local_err); + ret = kvm_cpu_check_pmu(cs, errp); if (ret < 0) { - error_report_err(local_err); return ret; } - ret = kvm_cpu_check_pv_features(cs, &local_err); + ret = kvm_cpu_check_pv_features(cs, errp); if (ret < 0) { - error_report_err(local_err); return ret; } - ret = kvm_cpu_check_ptw(cs, &local_err); + ret = kvm_cpu_check_ptw(cs, errp); if (ret < 0) { - error_report_err(local_err); return ret; } - ret = kvm_cpu_check_msgint(cs, &local_err); + ret = kvm_cpu_check_msgint(cs, errp); if (ret < 0) { - error_report_err(local_err); return ret; } - ret = kvm_cpu_check_misc_v1_1(cs, &local_err); + ret = kvm_cpu_check_misc_v1_1(cs, errp); if (ret < 0) { - error_report_err(local_err); return ret; } diff --git a/target/ppc/kvm.c b/target/ppc/kvm.c index 8e89a6c665..5d72cbd9fc 100644 --- a/target/ppc/kvm.c +++ b/target/ppc/kvm.c @@ -484,7 +484,7 @@ int kvm_arch_pre_create_vcpu(CPUState *cpu, Error **errp) return 0; } -int kvm_arch_init_vcpu(CPUState *cs) +int kvm_arch_init_vcpu(CPUState *cs, Error **errp) { PowerPCCPU *cpu = POWERPC_CPU(cs); CPUPPCState *cenv = &cpu->env; @@ -493,9 +493,10 @@ int kvm_arch_init_vcpu(CPUState *cs) /* Synchronize sregs with kvm */ ret = kvm_arch_sync_sregs(cpu); if (ret) { + error_setg_errno(errp, -ret, "Register sync failed"), if (ret == -EINVAL) { - error_report("Register sync failed... If you're using kvm-hv.ko," - " only \"-cpu host\" is possible"); + error_append_hint(errp, "If you're using kvm-hv.ko," + " only \"-cpu host\" is possible\n"); } return ret; } @@ -504,6 +505,9 @@ int kvm_arch_init_vcpu(CPUState *cs) case POWERPC_MMU_BOOKE206: /* This target supports access to KVM's guest TLB */ ret = kvm_booke206_tlb_init(cpu); + if (ret < 0) { + error_setg_errno(errp, -ret, "failed kvm_booke206_tlb_init"), + } break; case POWERPC_MMU_2_07: if (!cap_htm && !kvmppc_is_pr(cs->kvm_state)) { diff --git a/target/riscv/kvm/kvm-cpu.c b/target/riscv/kvm/kvm-cpu.c index 5a82a63b82..523b515f2a 100644 --- a/target/riscv/kvm/kvm-cpu.c +++ b/target/riscv/kvm/kvm-cpu.c @@ -1605,7 +1605,7 @@ int kvm_arch_pre_create_vcpu(CPUState *cpu, Error **errp) return 0; } -int kvm_arch_init_vcpu(CPUState *cs) +int kvm_arch_init_vcpu(CPUState *cs, Error **errp) { int ret = 0; RISCVCPU *cpu = RISCV_CPU(cs); @@ -1615,6 +1615,7 @@ int kvm_arch_init_vcpu(CPUState *cs) if (!object_dynamic_cast(OBJECT(cpu), TYPE_RISCV_CPU_HOST)) { ret = kvm_vcpu_set_machine_ids(cpu, cs); if (ret != 0) { + error_setg_errno(errp, -ret, "failed setting machine id"); return ret; } } @@ -1623,6 +1624,9 @@ int kvm_arch_init_vcpu(CPUState *cs) kvm_riscv_update_cpu_cfg_isa_ext(cpu, cs); ret = kvm_vcpu_enable_sbi_dbcn(cpu, cs); + if (ret < 0) { + error_setg_errno(errp, -ret, "failed kvm_vcpu_enable_sbi_dbcn"); + } return ret; } diff --git a/target/s390x/kvm/kvm.c b/target/s390x/kvm/kvm.c index dc67e84886..76dd1e67c0 100644 --- a/target/s390x/kvm/kvm.c +++ b/target/s390x/kvm/kvm.c @@ -403,7 +403,7 @@ int kvm_arch_pre_create_vcpu(CPUState *cpu, Error **errp) return 0; } -int kvm_arch_init_vcpu(CPUState *cs) +int kvm_arch_init_vcpu(CPUState *cs, Error **errp) { unsigned int max_cpus = MACHINE(qdev_get_machine())->smp.max_cpus; S390CPU *cpu = S390_CPU(cs); -- 2.53.0