Re: [PATCH 1/7] KVM: VMX: read idt_vectoring_info a bit earlier

[Paolo Bonzini]

On 17/02/21 15:57, Maxim Levitsky wrote:
> diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
> index b3e36dc3f164..e428d69e21c0 100644
> --- a/arch/x86/kvm/vmx/vmx.c
> +++ b/arch/x86/kvm/vmx/vmx.c
> @@ -6921,13 +6921,15 @@ static fastpath_t vmx_vcpu_run(struct kvm_vcpu *vcpu)
>  	if (unlikely((u16)vmx->exit_reason.basic == EXIT_REASON_MCE_DURING_VMENTRY))
>  		kvm_machine_check();
>  
> +	if (likely(!vmx->exit_reason.failed_vmentry))
> +		vmx->idt_vectoring_info = vmcs_read32(IDT_VECTORING_INFO_FIELD);
> +

Any reason for the if?

Paolo