Re: [PATCH v2 3/5] KVM: x86: Use common 'enable_apicv' variable for both APICv and AVIC

[Paolo Bonzini]

On 26/05/21 17:52, Maxim Levitsky wrote:
> > I don't love the intermediate "avic" either, but there isn't a good alternative.
> > Forcing VMX to also use an intermediate doesn't make much sense, we'd be penalizing
> > ourselves in the form of unnecessary complexity just because AVIC needs to be
> > disabled by default for reasons KVM can't fix.
> This is also something we should eventually reconsider.
> These days, the AVIC works quite well and disables itself when needed.
> When do you think it will be the time to enable it by default?

We can probably enable it, but most guests won't use it because of x2apic.

Paolo