Enlightened VMCS is enabled by writing to a field in VP assist page and these require virtual APIC.
Signed-off-by: Vitaly Kuznetsov <vkuzn...@redhat.com> --- target/i386/kvm.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/target/i386/kvm.c b/target/i386/kvm.c index af45241adb..9edf76e473 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -1083,7 +1083,7 @@ static int hv_report_missing_dep(X86CPU *cpu, const char *name, return 1; } - if (cpu->hyperv_all) { + if (cpu->hyperv_all && strcmp(name, "hv-evmcs")) { fprintf(stderr, "Hyper-V %s (requested by 'hv-all' cpu flag) " "requires %s (is not supported by kernel)\n", kvm_hyperv_properties[i].desc, kvm_hyperv_properties[j].desc); @@ -1183,6 +1183,9 @@ static int hyperv_handle_properties(CPUState *cs, if (cpu->hyperv_synic && !cpu->hyperv_synic_kvm_only && !cpu->hyperv_vpindex) r |= hv_report_missing_dep(cpu, "hv-synic", "hv-vpindex"); + if (cpu->hyperv_evmcs && !cpu->hyperv_vapic) { + r |= hv_report_missing_dep(cpu, "hv-evmcs", "hv-vapic"); + } /* Not exposed by KVM but needed to make CPU hotplug in Windows work */ env->features[FEAT_HYPERV_EDX] |= HV_CPU_DYNAMIC_PARTITIONING_AVAILABLE; -- 2.20.1