Re: [Xen-devel] [PATCH 18/22] vixen: Introduce ECS_PROXY for event channel proxying

[Anthony Liguori <anthony@xxxxxxxxxxxxx>]

On Sun, Jan 7, 2018 at 12:44 AM, Roger Pau Monné <roger.pau@xxxxxxxxxx> wrote:
> On Sat, Jan 06, 2018 at 02:54:33PM -0800, Anthony Liguori wrote:
>> From: Jan H. Schönherr <jschoenh@xxxxxxxxx>
>>
>> Previously, we would keep proxied event channels as ECS_INTERDOMAIN
>> channel around. This works for most things, but has the problem
>> that EVTCHNOP_status is broken, and that EVTCHNOP_close does not
>> mark an event channel as free.
>
> Why not use ECS_RESERVED for event channels that are forwarded to L0?
>
> You could easily see whether an event channel is forwarded or not just
> by checking if it's ECS_RESERVED, and then decide whether to forward
> the hypercall to L0 or handle it in vixen.

Jan?

Regards,

Anthony Liguori

>
> Thanks, Roger.
>
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