Re: [Xen-devel] [PATCH] Flag events caused by foreign domains

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

> On Thu, Dec 01, Andres Lagar-Cavilla wrote:
>
>> Add a new flag for mem events, as consumers might need to discriminate
>> foreign domain-caused from guest-caused events. The vcpu field of an
>> event is bogus from a consumer p.o.v. for foreign domain-caused events.
>
> How is this supposed to be used?
We're just OR'ing an extra flag on existing events. Toolstacks can ignore
it, or use it to handle foreign events differently, or whatever. No new
events are generated, timings don't change etc.

Is that your concern?
Andres
>
> If the toolstack is going to use this then I have to say that it cant
> delay events much because the ring will be filled up quickly with the
> result that no more events can be generated until the toolstack sends
> responses back to the hypervisor.
>
> Olaf
>



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