Re: [Xen-devel] [PATCH 0 of 2] Mem event ring management overhaul

["Andres Lagar-Cavilla" <andres@xxxxxxxxxxxxxxxx>]

> On Tue, Dec 06, Andres Lagar-Cavilla wrote:
>
>> If the request comes from the guest itself, and it requires
>> paging_populate (!= p2m_query), the event is guaranteed to be put in the
>> ring, and then the vcpu goes to sleep.
>>
>> Easy-peasy
>
> If everything were so easy. ;-)
>
> I will try to combine your patch with my paging waitqueue change.
> Perhaps your change should disallow paging if max_cpus is larger than
> RING_SIZE().
That sounds excellent. I can do those changes as well, if you don't want
to be burdened by that.

I think it's wise though, to suspend forward-motion on either "branch" of
ring management until we get a verdict. The fundamentals of each
philosophy have been exposed. Further code has a 50% of being throw-away.

Thanks
Andres
>
>
> Olaf
>



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