2 files changed, 49 insertions, 0 deletions

diff --git a/xen/include/xen/event.h b/xen/include/xen/event.h
index 6f6016285d..30c59c9979 100644
--- a/xen/include/xen/event.h
+++ b/xen/include/xen/event.h
@@ -102,4 +102,49 @@ void notify_via_xen_event_channel(struct domain *ld, int lport);
         smp_mb(); /* set blocked status /then/ caller does his work */  \
     } while ( 0 )
 
+void evtchn_check_pollers(struct domain *d, unsigned int port);
+
+void evtchn_2l_init(struct domain *d);
+
+/*
+ * Low-level event channel port ops.
+ */
+struct evtchn_port_ops {
+    void (*set_pending)(struct vcpu *v, struct evtchn *evtchn);
+    void (*clear_pending)(struct domain *d, struct evtchn *evtchn);
+    void (*unmask)(struct domain *d, struct evtchn *evtchn);
+    bool_t (*is_pending)(struct domain *d, const struct evtchn *evtchn);
+    bool_t (*is_masked)(struct domain *d, const struct evtchn *evtchn);
+};
+
+static inline void evtchn_port_set_pending(struct vcpu *v,
+                                           struct evtchn *evtchn)
+{
+    v->domain->evtchn_port_ops->set_pending(v, evtchn);
+}
+
+static inline void evtchn_port_clear_pending(struct domain *d,
+                                             struct evtchn *evtchn)
+{
+    d->evtchn_port_ops->clear_pending(d, evtchn);
+}
+
+static inline void evtchn_port_unmask(struct domain *d,
+                                      struct evtchn *evtchn)
+{
+    d->evtchn_port_ops->unmask(d, evtchn);
+}
+
+static inline bool_t evtchn_port_is_pending(struct domain *d,
+                                            const struct evtchn *evtchn)
+{
+    return d->evtchn_port_ops->is_pending(d, evtchn);
+}
+
+static inline bool_t evtchn_port_is_masked(struct domain *d,
+                                           const struct evtchn *evtchn)
+{
+    return d->evtchn_port_ops->is_masked(d, evtchn);
+}
+
 #endif /* __XEN_EVENT_H__ */
diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h
index 2e83f08dd9..7c9eca38d2 100644
--- a/xen/include/xen/sched.h
+++ b/xen/include/xen/sched.h
@@ -66,6 +66,7 @@ struct evtchn
     u8  state;             /* ECS_* */
     u8  xen_consumer;      /* Consumer in Xen, if any? (0 = send to guest) */
     u16 notify_vcpu_id;    /* VCPU for local delivery notification */
+    u32 port;
     union {
         struct {
             domid_t remote_domid;
@@ -238,6 +239,8 @@ struct mem_event_per_domain
     struct mem_event_domain access;
 };
 
+struct evtchn_port_ops;
+
 struct domain
 {
     domid_t          domain_id;
@@ -271,6 +274,7 @@ struct domain
     /* Event channel information. */
     struct evtchn   *evtchn[NR_EVTCHN_BUCKETS];
     spinlock_t       event_lock;
+    const struct evtchn_port_ops *evtchn_port_ops;
 
     struct grant_table *grant_table;