From e573f4fac04be1866b13b08a31627c7dad06538f Mon Sep 17 00:00:00 2001 From: "sos22@douglas.cl.cam.ac.uk" Date: Fri, 28 Jul 2006 14:05:02 +0100 Subject: [MINI-OS] Add evtchn_bind_interdomain to mini-os, allowing clients to bind to interdomain event channels. Signed-off-by: John D. Ramsdell Signed-off-by: Steven Smith --- extras/mini-os/events.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'extras/mini-os/events.c') diff --git a/extras/mini-os/events.c b/extras/mini-os/events.c index dfc1206c2e..57e835225d 100644 --- a/extras/mini-os/events.c +++ b/extras/mini-os/events.c @@ -161,3 +161,23 @@ int evtchn_alloc_unbound(domid_t pal, evtchn_handler_t handler, *port = bind_evtchn(op.u.alloc_unbound.port, handler, data); return err; } + +/* Connect to a port so as to allow the exchange of notifications with + the pal. Returns the result of the hypervisor call. */ + +int evtchn_bind_interdomain(domid_t pal, evtchn_port_t remote_port, + evtchn_handler_t handler, void *data, + evtchn_port_t *local_port) +{ + evtchn_op_t op; + op.cmd = EVTCHNOP_bind_interdomain; + op.u.bind_interdomain.remote_dom = pal; + op.u.bind_interdomain.remote_port = remote_port; + int err = HYPERVISOR_event_channel_op(&op); + if (err) + return err; + evtchn_port_t port = op.u.bind_interdomain.local_port; + clear_evtchn(port); /* Without, handler gets invoked now! */ + *local_port = bind_evtchn(port, handler, data); + return err; +} -- cgit v1.2.3