Re: [PATCH v3 0/5] kvm: Make ioeventfd usable on s390.

Michael S. Tsirkin
2013-02-26T13:57:55Z

On Tue, Feb 26, 2013 at 02:48:38PM +0100, Christian Borntraeger wrote:
> On 26/02/13 14:41, Michael S. Tsirkin wrote:
> >> So...
> >> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
> >
> > So let's apply the patch for 3.9 and
>
> Give us 1 or 2 days testing for regression and then this can go for 3.9.
> The host changes can then be deferred to a later point in time.

Nod.

> > avoid caring about "old guests" much?
>
> Well caring about old guests is related to caring about malicious guests.
> Maybe we should make it explicit in the spec that the token can be wrong
> or omitted. Just to avoid that anybody starts to optimize things too
> aggressive.
>
> Ok?
>
> Christian

Absolutely, we can't trust the guest anyway. It's just an optimization
hint, must validate and if it fails do a linear lookup.

--
MST