Commit f1adceaf authored Jan 25, 2019 by Vitaly Kuznetsov Committed by Paolo Bonzini Jan 25, 2019

x86/kvm/hyper-v: recommend using eVMCS only when it is enabled



We shouldn't probably be suggesting using Enlightened VMCS when it's not
enabled (not supported from guest's point of view). Hyper-V on KVM seems
to be fine either way but let's be consistent.

Fixes: 2bc39970 ("x86/kvm/hyper-v: Introduce KVM_GET_SUPPORTED_HV_CPUID")
Reviewed-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

parent 1998fd32

arch/x86/kvm/hyperv.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1850,6 +1850,7 @@ int kvm_vcpu_ioctl_get_hv_cpuid(struct kvm_vcpu vcpu, struct kvm_cpuid2 cpuid,
		ent->eax \|= HV_X64_RELAXED_TIMING_RECOMMENDED;
		ent->eax \|= HV_X64_CLUSTER_IPI_RECOMMENDED;
		ent->eax \|= HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED;
		if (evmcs_ver)
		ent->eax \|= HV_X64_ENLIGHTENED_VMCS_RECOMMENDED;

		/*

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