x86/kvm/hyper-v: Introduce nested_get_evmcs_version() helper
The upcoming KVM_GET_SUPPORTED_HV_CPUID ioctl will need to return
Enlightened VMCS version in HYPERV_CPUID_NESTED_FEATURES.EAX when
it was enabled.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 3cbe67a..0762e81 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -7047,6 +7047,12 @@ static int svm_unregister_enc_region(struct kvm *kvm,
return ret;
}
+static uint16_t nested_get_evmcs_version(struct kvm_vcpu *vcpu)
+{
+ /* Not supported */
+ return 0;
+}
+
static int nested_enable_evmcs(struct kvm_vcpu *vcpu,
uint16_t *vmcs_version)
{
@@ -7185,6 +7191,7 @@ static struct kvm_x86_ops svm_x86_ops __ro_after_init = {
.mem_enc_unreg_region = svm_unregister_enc_region,
.nested_enable_evmcs = nested_enable_evmcs,
+ .nested_get_evmcs_version = nested_get_evmcs_version,
};
static int __init svm_init(void)