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177 lines
5.8 KiB
177 lines
5.8 KiB
1 month ago
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From 6bae9faff44415edf51bb7f919fc816f8fe3cd12 Mon Sep 17 00:00:00 2001
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From: Julia Suvorova <jusual@redhat.com>
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Date: Fri, 27 Sep 2024 12:47:41 +0200
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Subject: [PATCH 29/38] target/i386/kvm: Report which action failed in
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kvm_arch_put/get_registers
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RH-Author: Julia Suvorova <None>
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RH-MergeRequest: 287: kvm: Allow kvm_arch_get/put_registers to accept Error**
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RH-Jira: RHEL-20574
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RH-Acked-by: Juraj Marcin <None>
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RH-Acked-by: Peter Xu <peterx@redhat.com>
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RH-Commit: [2/2] 1e430500be009393846a19451472b3d1031c1283
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To help debug and triage future failure reports (akin to [1,2]) that
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may occur during kvm_arch_put/get_registers, the error path of each
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action is accompanied by unique error message.
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[1] https://issues.redhat.com/browse/RHEL-7558
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[2] https://issues.redhat.com/browse/RHEL-21761
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Signed-off-by: Julia Suvorova <jusual@redhat.com>
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Reviewed-by: Peter Xu <peterx@redhat.com>
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Link: https://lore.kernel.org/r/20240927104743.218468-3-jusual@redhat.com
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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(cherry picked from commit fc058618d1596d29e89016750a1aaf64c9fe8832)
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---
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target/i386/kvm/kvm.c | 23 +++++++++++++++++++++++
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1 file changed, 23 insertions(+)
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diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c
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index 423e6922d8..814f93da19 100644
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--- a/target/i386/kvm/kvm.c
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+++ b/target/i386/kvm/kvm.c
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@@ -5136,6 +5136,7 @@ int kvm_arch_put_registers(CPUState *cpu, int level, Error **errp)
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if (level >= KVM_PUT_RESET_STATE) {
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ret = kvm_put_msr_feature_control(x86_cpu);
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if (ret < 0) {
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+ error_setg_errno(errp, -ret, "Failed to set feature control MSR");
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return ret;
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}
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}
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@@ -5143,12 +5144,14 @@ int kvm_arch_put_registers(CPUState *cpu, int level, Error **errp)
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/* must be before kvm_put_nested_state so that EFER.SVME is set */
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ret = has_sregs2 ? kvm_put_sregs2(x86_cpu) : kvm_put_sregs(x86_cpu);
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if (ret < 0) {
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+ error_setg_errno(errp, -ret, "Failed to set special registers");
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return ret;
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}
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if (level >= KVM_PUT_RESET_STATE) {
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ret = kvm_put_nested_state(x86_cpu);
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if (ret < 0) {
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+ error_setg_errno(errp, -ret, "Failed to set nested state");
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return ret;
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}
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}
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@@ -5166,6 +5169,7 @@ int kvm_arch_put_registers(CPUState *cpu, int level, Error **errp)
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if (xen_mode == XEN_EMULATE && level == KVM_PUT_FULL_STATE) {
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ret = kvm_put_xen_state(cpu);
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if (ret < 0) {
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+ error_setg_errno(errp, -ret, "Failed to set Xen state");
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return ret;
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}
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}
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@@ -5173,37 +5177,45 @@ int kvm_arch_put_registers(CPUState *cpu, int level, Error **errp)
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ret = kvm_getput_regs(x86_cpu, 1);
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if (ret < 0) {
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+ error_setg_errno(errp, -ret, "Failed to set general purpose registers");
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return ret;
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}
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ret = kvm_put_xsave(x86_cpu);
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if (ret < 0) {
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+ error_setg_errno(errp, -ret, "Failed to set XSAVE");
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return ret;
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}
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ret = kvm_put_xcrs(x86_cpu);
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if (ret < 0) {
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+ error_setg_errno(errp, -ret, "Failed to set XCRs");
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return ret;
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}
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ret = kvm_put_msrs(x86_cpu, level);
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if (ret < 0) {
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+ error_setg_errno(errp, -ret, "Failed to set MSRs");
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return ret;
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}
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ret = kvm_put_vcpu_events(x86_cpu, level);
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if (ret < 0) {
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+ error_setg_errno(errp, -ret, "Failed to set vCPU events");
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return ret;
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}
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if (level >= KVM_PUT_RESET_STATE) {
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ret = kvm_put_mp_state(x86_cpu);
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if (ret < 0) {
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+ error_setg_errno(errp, -ret, "Failed to set MP state");
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return ret;
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}
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}
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ret = kvm_put_tscdeadline_msr(x86_cpu);
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if (ret < 0) {
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+ error_setg_errno(errp, -ret, "Failed to set TSC deadline MSR");
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return ret;
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}
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ret = kvm_put_debugregs(x86_cpu);
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if (ret < 0) {
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+ error_setg_errno(errp, -ret, "Failed to set debug registers");
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return ret;
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}
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return 0;
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@@ -5218,6 +5230,7 @@ int kvm_arch_get_registers(CPUState *cs, Error **errp)
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ret = kvm_get_vcpu_events(cpu);
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if (ret < 0) {
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+ error_setg_errno(errp, -ret, "Failed to get vCPU events");
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goto out;
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}
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/*
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@@ -5226,44 +5239,54 @@ int kvm_arch_get_registers(CPUState *cs, Error **errp)
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*/
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ret = kvm_get_mp_state(cpu);
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if (ret < 0) {
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+ error_setg_errno(errp, -ret, "Failed to get MP state");
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goto out;
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}
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ret = kvm_getput_regs(cpu, 0);
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if (ret < 0) {
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+ error_setg_errno(errp, -ret, "Failed to get general purpose registers");
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goto out;
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}
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ret = kvm_get_xsave(cpu);
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if (ret < 0) {
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+ error_setg_errno(errp, -ret, "Failed to get XSAVE");
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goto out;
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}
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ret = kvm_get_xcrs(cpu);
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if (ret < 0) {
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+ error_setg_errno(errp, -ret, "Failed to get XCRs");
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goto out;
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}
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ret = has_sregs2 ? kvm_get_sregs2(cpu) : kvm_get_sregs(cpu);
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if (ret < 0) {
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+ error_setg_errno(errp, -ret, "Failed to get special registers");
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goto out;
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}
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ret = kvm_get_msrs(cpu);
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if (ret < 0) {
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+ error_setg_errno(errp, -ret, "Failed to get MSRs");
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goto out;
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}
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ret = kvm_get_apic(cpu);
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if (ret < 0) {
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+ error_setg_errno(errp, -ret, "Failed to get APIC");
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goto out;
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}
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ret = kvm_get_debugregs(cpu);
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if (ret < 0) {
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+ error_setg_errno(errp, -ret, "Failed to get debug registers");
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goto out;
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}
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ret = kvm_get_nested_state(cpu);
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if (ret < 0) {
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+ error_setg_errno(errp, -ret, "Failed to get nested state");
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goto out;
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}
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#ifdef CONFIG_XEN_EMU
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if (xen_mode == XEN_EMULATE) {
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ret = kvm_get_xen_state(cs);
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if (ret < 0) {
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+ error_setg_errno(errp, -ret, "Failed to get Xen state");
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goto out;
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}
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}
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--
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2.39.3
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