Re: [Xen-devel] To use xcs or not?

[Jacob Gorm Hansen <jacobg@xxxxxxx>]

Anthony Liguori wrote:
> Jacob Gorm Hansen wrote:
>
> > Hmm from looking at the code in drivers/xen/evtchn/evtchn.c, it seems 
> > if I write to this device, I can unmask local event channels, but 
> > there is no notion of a target domain.
>
> Port's come in pairs.  117 is the remote  port number.  Typically, in 
> dom0 you would allocate the port pair (0, 117).  The 0 tells xc to 
> allocate an unused local port that's connected to the remote port.
> Local ports are always unique so there's no need to be domain specific.
I see. But that means there is no way to _send_ notifications from 
/dev/xen/evtchn? All I can do there is read incoming events?
Jacob


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