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

[Roger Pau Monné <roger.pau@xxxxxxxxxx>]

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.

Thanks, Roger.

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