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Generally speaking, the event channel local/remote port is fixed for the lifetime of the associated domain object. The exception to this is a secondary XS_INTRODUCE (defined to re-bind to a new event channel) which pokes around at the domain object's internal state. We need to refactor the evtchn handling to support live update, so start by moving the relevant manipulation into Domain. No practical change. Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com> Reviewed-by: Edwin Török <edvin.torok@citrix.com> Acked-by: Christian Lindig <christian.lindig@citrix.com>