Re: [Xen-devel] back/frontend drivers HelloWorld

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 23 Sep 2005, at 10:53, NAHieu wrote:

> > You bootstrap yourself via xenbus. You have a pre-agreed location in
> > the xenstore hieararchy where the frontend driver writes key-value
> > pairs containing the grant reference for the page containing the
> > message rings, and an event channel for async notifications.
> I imagine that we can get rid of event channel, and use xenstore to
> notify. That is certainly OK, but I doubt about its efficientcy. What
> do you think?
Very mad. It's easy to set up an inter-domain event channel betwene 
domains A and B:
 1. A executes something like evtchn = EVTCHNOP_alloc_unbound(B)
 2. A writes 'evtchn' into xenstore.
 3. B reads 'evtchn' from xenstore
 4. B executes something like EVTCHNOP_bind_interdomain(A,evtchn)

 -- Keir


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel