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t=1727278680; 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=ObYTbRHSwpKo/lff7oF/ipPXIuM9J3H215MZU6dkM8M=; b=DH+yPJdtdGz86RHWrdS3x4Gmc+9lXJP99zPVyzv6kILaRqepVBBxFo4plpPk4sqUsAuhOM 09CyOMQnQ/Qb4montrsyLQE/KuMgqWArIh05mzfh15SphViVFQcy2yahd5Qju5pq2HG+XH ORB/im/OSFJkrtZmOSGtwhTJhyWhypw= X-MC-Unique: vniCtcX2OPKkisL1i03xag-1 From: Julia Suvorova To: qemu-devel@nongnu.org Cc: Paolo Bonzini , Peter Xu , Marcelo Tosatti , Peter Maydell , Song Gao , Alistair Francis , Daniel Henrique Barboza , Christian Borntraeger , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Julia Suvorova Subject: [PATCH 2/2] target/i386/kvm: Report which action failed in kvm_arch_put/get_registers Date: Wed, 25 Sep 2024 17:36:23 +0200 Message-ID: <20240925153625.183600-3-jusual@redhat.com> In-Reply-To: <20240925153625.183600-1-jusual@redhat.com> References: <20240925153625.183600-1-jusual@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; 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charset="utf-8" To help debug and triage future failure reports (akin to [1,2]) that may occur during kvm_arch_put/get_registers, the error path of each action is accompanied by unique error message. [1] https://issues.redhat.com/browse/RHEL-7558 [2] https://issues.redhat.com/browse/RHEL-21761 Signed-off-by: Julia Suvorova Reviewed-by: Peter Xu --- target/i386/kvm/kvm.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index 039ed08825..7cdc87f855 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -5133,6 +5133,7 @@ int kvm_arch_put_registers(CPUState *cpu, int level, = Error **errp) if (level >=3D KVM_PUT_RESET_STATE) { ret =3D kvm_put_msr_feature_control(x86_cpu); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to set feature control MS= R"); return ret; } } @@ -5140,12 +5141,14 @@ int kvm_arch_put_registers(CPUState *cpu, int level= , Error **errp) /* must be before kvm_put_nested_state so that EFER.SVME is set */ ret =3D has_sregs2 ? kvm_put_sregs2(x86_cpu) : kvm_put_sregs(x86_cpu); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to set special registers"); return ret; } =20 if (level >=3D KVM_PUT_RESET_STATE) { ret =3D kvm_put_nested_state(x86_cpu); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to set nested state"); return ret; } } @@ -5163,6 +5166,7 @@ int kvm_arch_put_registers(CPUState *cpu, int level, = Error **errp) if (xen_mode =3D=3D XEN_EMULATE && level =3D=3D KVM_PUT_FULL_STATE) { ret =3D kvm_put_xen_state(cpu); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to set Xen state"); return ret; } } @@ -5170,37 +5174,45 @@ int kvm_arch_put_registers(CPUState *cpu, int level= , Error **errp) =20 ret =3D kvm_getput_regs(x86_cpu, 1); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to set general purpose regist= ers"); return ret; } ret =3D kvm_put_xsave(x86_cpu); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to set XSAVE"); return ret; } ret =3D kvm_put_xcrs(x86_cpu); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to set XCRs"); return ret; } ret =3D kvm_put_msrs(x86_cpu, level); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to set MSRs"); return ret; } ret =3D kvm_put_vcpu_events(x86_cpu, level); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to set vCPU events"); return ret; } if (level >=3D KVM_PUT_RESET_STATE) { ret =3D kvm_put_mp_state(x86_cpu); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to set MP state"); return ret; } } =20 ret =3D kvm_put_tscdeadline_msr(x86_cpu); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to set TSC deadline MSR"); return ret; } ret =3D kvm_put_debugregs(x86_cpu); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to set debug registers"); return ret; } return 0; @@ -5215,6 +5227,7 @@ int kvm_arch_get_registers(CPUState *cs, Error **errp) =20 ret =3D kvm_get_vcpu_events(cpu); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to get vCPU events"); goto out; } /* @@ -5223,44 +5236,54 @@ int kvm_arch_get_registers(CPUState *cs, Error **er= rp) */ ret =3D kvm_get_mp_state(cpu); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to get MP state"); goto out; } ret =3D kvm_getput_regs(cpu, 0); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to get general purpose regist= ers"); goto out; } ret =3D kvm_get_xsave(cpu); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to get XSAVE"); goto out; } ret =3D kvm_get_xcrs(cpu); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to get XCRs"); goto out; } ret =3D has_sregs2 ? kvm_get_sregs2(cpu) : kvm_get_sregs(cpu); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to get special registers"); goto out; } ret =3D kvm_get_msrs(cpu); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to get MSRs"); goto out; } ret =3D kvm_get_apic(cpu); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to get APIC"); goto out; } ret =3D kvm_get_debugregs(cpu); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to get debug registers"); goto out; } ret =3D kvm_get_nested_state(cpu); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to get nested state"); goto out; } #ifdef CONFIG_XEN_EMU if (xen_mode =3D=3D XEN_EMULATE) { ret =3D kvm_get_xen_state(cs); if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to get Xen state"); goto out; } } --=20 2.45.0