From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists1p.gnu.org (lists1p.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D6BAEC982C3 for ; Wed, 16 Sep 2026 14:49:49 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists1p.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1x6qwg-0007TJ-K4; Wed, 16 Sep 2026 10:49:10 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1x6qwX-0007LG-3B for qemu-devel@nongnu.org; Wed, 16 Sep 2026 10:49:01 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1x6qwT-0006aO-3v for qemu-devel@nongnu.org; Wed, 16 Sep 2026 10:48:58 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1789570136; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Mp9Gt8hNuRwnR0Nv0BcxvQY9JAq4AGfT4zgsNY49Aq4=; b=gUEZ8Vdo+TUZfuykAabOFrRkVcxngcjjpWUjWAOedsog/25T5iy/rcWq1P4eDaFSVng2A3 a4V4vCfu+MRoK4N513RybsHOXz2xsFl7O7LiGISbKBEpu39lubnckXWhkYm2rbNsLKtyGv gwf4DJVoozyuRQR1nkGQsoH6E/NXfqg= Received: from mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-639-Zhm2K5kAOdGo1WweSdMt_g-1; Wed, 16 Sep 2026 10:48:52 -0400 X-MC-Unique: Zhm2K5kAOdGo1WweSdMt_g-1 X-Mimecast-MFC-AGG-ID: Zhm2K5kAOdGo1WweSdMt_g_1789570130 Received: from mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.17]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id CEDEE1801355; Wed, 16 Sep 2026 14:48:50 +0000 (UTC) Received: from laptop.redhat.corp (headnet04.pony-001.prod.iad2.dc.redhat.com [10.2.32.116]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 2646719560AB; Wed, 16 Sep 2026 14:48:45 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, kvmarm@lists.linux.dev, peter.maydell@linaro.org, shaju.abraham@nutanix.com, khushit.shah@nutanix.com, yangjinqian1@huawei.com, cohuck@redhat.com, richard.henderson@linaro.org, sebott@redhat.com, skolothumtho@nvidia.com, philmd@oss.qualcomm.com Cc: maz@kernel.org, oliver.upton@linux.dev, pbonzini@redhat.com, armbru@redhat.com, berrange@redhat.com, abologna@redhat.com, jdenemar@redhat.com Subject: [PATCH v9 15/26] target/arm/kvm: Pass an Error handle to kvm_arch_init_vcpu Date: Wed, 16 Sep 2026 16:45:38 +0200 Message-ID: <20260916144721.751810-16-eric.auger@redhat.com> In-Reply-To: <20260916144721.751810-1-eric.auger@redhat.com> References: <20260916144721.751810-1-eric.auger@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 Received-SPF: pass client-ip=170.10.129.124; envelope-from=eric.auger@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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_NONE=-0.0001, RCVD_IN_MSPIKE_H2=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org 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 some functions called within kvm_arch_init_vcpu() could get benefit from it, especially on ARM. This will happen in subsequent patches. Signed-off-by: Eric Auger --- include/system/kvm.h | 2 +- accel/kvm/kvm-all.c | 15 +++++++-------- target/arm/kvm.c | 14 +++++++++----- target/i386/kvm/kvm.c | 22 ++++++++++++---------- target/loongarch/kvm/kvm.c | 24 ++++++++---------------- target/ppc/kvm.c | 6 +++--- target/riscv/kvm/kvm-cpu.c | 3 ++- target/s390x/kvm/kvm.c | 2 +- 8 files changed, 43 insertions(+), 45 deletions(-) diff --git a/include/system/kvm.h b/include/system/kvm.h index 714b8c7b01..cd94eb0323 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 83cbd120a8..a66d1d8c66 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -492,11 +492,11 @@ 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); @@ -739,11 +739,10 @@ 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 cdc3779321..3ec2618cc1 100644 --- a/target/arm/kvm.c +++ b/target/arm/kvm.c @@ -2215,7 +2215,7 @@ 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; uint64_t mpidr; @@ -2224,7 +2224,7 @@ int kvm_arch_init_vcpu(CPUState *cs) 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; } @@ -2263,16 +2263,19 @@ int kvm_arch_init_vcpu(CPUState *cs) /* Do KVM_ARM_VCPU_INIT ioctl */ ret = kvm_arm_vcpu_init(cpu); if (ret) { + error_setg(errp, "failed kvm_arm_vcpu_init (%d)", ret); return ret; } if (cpu_isar_feature(aa64_sve, cpu)) { ret = kvm_arm_sve_set_vls(cpu); if (ret) { + error_setg(errp, "failed kvm_arm_sve_set_vls (%d)", ret); return ret; } ret = kvm_arm_vcpu_finalize(cpu, KVM_ARM_VCPU_SVE); if (ret) { + error_setg(errp, "failed kvm_arm_vcpu_finalize (%d)", ret); return ret; } } @@ -2281,11 +2284,11 @@ 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", + error_setg(errp, "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_append_hint(errp, "Consider setting the kvm-psci-version property " + "on the migration source.\n"); return ret; } } @@ -2307,6 +2310,7 @@ 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(errp, "failed retrieving PMIDR value"); return ret; } cpu->mp_affinity = mpidr & ARM64_AFFINITY_MASK; diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index 1eeadb99ad..41e99f6dcd 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(errp, "failed hyperv_init_vcpu (%d)", r); return r; } @@ -2371,6 +2372,7 @@ int kvm_arch_init_vcpu(CPUState *cs) r = kvm_xen_init_vcpu(cs); if (r) { + error_setg(errp, "failed kvm_xen_init_vcpu (%d)", r); 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(errp, "kvm_get_mce_cap_supported: %s", strerror(-ret)); 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(errp, "KVM_X86_SETUP_MCE: %s", strerror(-ret)); 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(errp, "KVM_SET_CPUID2 failed (%m)"); goto fail; } kvm_init_xsave(env); diff --git a/target/loongarch/kvm/kvm.c b/target/loongarch/kvm/kvm.c index 15082a01f8..9fca5f81f8 100644 --- a/target/loongarch/kvm/kvm.c +++ b/target/loongarch/kvm/kvm.c @@ -1239,11 +1239,10 @@ 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( @@ -1253,45 +1252,38 @@ 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; } diff --git a/target/ppc/kvm.c b/target/ppc/kvm.c index 8e89a6c665..d90e904f90 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; @@ -494,8 +494,8 @@ int kvm_arch_init_vcpu(CPUState *cs) ret = kvm_arch_sync_sregs(cpu); if (ret) { if (ret == -EINVAL) { - error_report("Register sync failed... If you're using kvm-hv.ko," - " only \"-cpu host\" is possible"); + error_setg(errp, "Register sync failed... If you're using kvm-hv.ko," + " only \"-cpu host\" is possible"); } return ret; } diff --git a/target/riscv/kvm/kvm-cpu.c b/target/riscv/kvm/kvm-cpu.c index 68e1501b21..d09048c522 100644 --- a/target/riscv/kvm/kvm-cpu.c +++ b/target/riscv/kvm/kvm-cpu.c @@ -1544,7 +1544,7 @@ 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); @@ -1554,6 +1554,7 @@ 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(errp, "failed setting machine id (%d)", ret); return ret; } } diff --git a/target/s390x/kvm/kvm.c b/target/s390x/kvm/kvm.c index b34a912714..19b9540bdd 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