diff options
| -rw-r--r-- | target/i386/kvm.c | 43 |
1 files changed, 34 insertions, 9 deletions
diff --git a/target/i386/kvm.c b/target/i386/kvm.c index b35623ae24..6c49954e68 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -632,11 +632,6 @@ static int hyperv_handle_properties(CPUState *cs) X86CPU *cpu = X86_CPU(cs); CPUX86State *env = &cpu->env; - if (cpu->hyperv_time && - kvm_check_extension(cs->kvm_state, KVM_CAP_HYPERV_TIME) <= 0) { - cpu->hyperv_time = false; - } - if (cpu->hyperv_relaxed_timing) { env->features[FEAT_HYPERV_EAX] |= HV_HYPERCALL_AVAILABLE; } @@ -645,6 +640,12 @@ static int hyperv_handle_properties(CPUState *cs) env->features[FEAT_HYPERV_EAX] |= HV_APIC_ACCESS_AVAILABLE; } if (cpu->hyperv_time) { + if (kvm_check_extension(cs->kvm_state, KVM_CAP_HYPERV_TIME) <= 0) { + fprintf(stderr, "Hyper-V clocksources " + "(requested by 'hv-time' cpu flag) " + "are not supported by kernel\n"); + return -ENOSYS; + } env->features[FEAT_HYPERV_EAX] |= HV_HYPERCALL_AVAILABLE; env->features[FEAT_HYPERV_EAX] |= HV_TIME_REF_COUNT_AVAILABLE; env->features[FEAT_HYPERV_EAX] |= HV_REFERENCE_TSC_AVAILABLE; @@ -659,17 +660,41 @@ static int hyperv_handle_properties(CPUState *cs) env->features[FEAT_HYPERV_EAX] |= HV_ACCESS_FREQUENCY_MSRS; env->features[FEAT_HYPERV_EDX] |= HV_FREQUENCY_MSRS_AVAILABLE; } - if (cpu->hyperv_crash && has_msr_hv_crash) { + if (cpu->hyperv_crash) { + if (!has_msr_hv_crash) { + fprintf(stderr, "Hyper-V crash MSRs " + "(requested by 'hv-crash' cpu flag) " + "are not supported by kernel\n"); + return -ENOSYS; + } env->features[FEAT_HYPERV_EDX] |= HV_GUEST_CRASH_MSR_AVAILABLE; } env->features[FEAT_HYPERV_EDX] |= HV_CPU_DYNAMIC_PARTITIONING_AVAILABLE; - if (cpu->hyperv_reset && has_msr_hv_reset) { + if (cpu->hyperv_reset) { + if (!has_msr_hv_reset) { + fprintf(stderr, "Hyper-V reset MSR " + "(requested by 'hv-reset' cpu flag) " + "is not supported by kernel\n"); + return -ENOSYS; + } env->features[FEAT_HYPERV_EAX] |= HV_RESET_AVAILABLE; } - if (cpu->hyperv_vpindex && has_msr_hv_vpindex) { + if (cpu->hyperv_vpindex) { + if (!has_msr_hv_vpindex) { + fprintf(stderr, "Hyper-V VP_INDEX MSR " + "(requested by 'hv-vpindex' cpu flag) " + "is not supported by kernel\n"); + return -ENOSYS; + } env->features[FEAT_HYPERV_EAX] |= HV_VP_INDEX_AVAILABLE; } - if (cpu->hyperv_runtime && has_msr_hv_runtime) { + if (cpu->hyperv_runtime) { + if (!has_msr_hv_runtime) { + fprintf(stderr, "Hyper-V VP_RUNTIME MSR " + "(requested by 'hv-runtime' cpu flag) " + "is not supported by kernel\n"); + return -ENOSYS; + } env->features[FEAT_HYPERV_EAX] |= HV_VP_RUNTIME_AVAILABLE; } if (cpu->hyperv_synic) { |