Re: [PATCH v3 22/34] KVM: x86: Expose Hyper-V L2 TLB flush feature

[Maxim Levitsky]

On Thu, 2022-04-14 at 15:20 +0200, Vitaly Kuznetsov wrote:
> With both nSVM and nVMX implementations in place, KVM can now expose
> Hyper-V L2 TLB flush feature to userspace.
> 
> Signed-off-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
> ---
>  arch/x86/kvm/hyperv.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c
> index 68a0df4e3f66..1d6927538bc7 100644
> --- a/arch/x86/kvm/hyperv.c
> +++ b/arch/x86/kvm/hyperv.c
> @@ -2826,6 +2826,7 @@ int kvm_get_hv_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid2 *cpuid,
>  
>  		case HYPERV_CPUID_NESTED_FEATURES:
>  			ent->eax = evmcs_ver;
> +			ent->eax |= HV_X64_NESTED_DIRECT_FLUSH;
>  			ent->eax |= HV_X64_NESTED_MSR_BITMAP;
>  
>  			break;

Reviewed-by: Maxim Levitsky <mlevitsk@xxxxxxxxxx>

Best regards,
	Maxim Levitsky