[Xen-devel] [RFC PATCH V2 2/8] xen: sync public headers

[Wei Liu <wei.liu2@xxxxxxxxxx>]

Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
---
 include/xen/interface/event_channel.h |   33 +++++++++++++++++++++++++++++++++
 include/xen/interface/xen.h           |    7 ++++++-
 2 files changed, 39 insertions(+), 1 deletion(-)

diff --git a/include/xen/interface/event_channel.h 
b/include/xen/interface/event_channel.h
index f494292..3a3ac83 100644
--- a/include/xen/interface/event_channel.h
+++ b/include/xen/interface/event_channel.h
@@ -190,6 +190,39 @@ struct evtchn_reset {
 };
 typedef struct evtchn_reset evtchn_reset_t;
 
+/*
+ * EVTCHNOP_register_nlevel: Register N-level event channel
+ * NOTES:
+ *  1. Currently only 3-level is supported.
+ *  2. Should fall back to 2-level if this call fails.
+ */
+#define EVTCHNOP_register_nlevel 11
+/* 64 bit guests need 8 pages for evtchn_pending and evtchn_mask for
+ * 256k event channels while 32 bit ones only need 1 page for 32k
+ * event channels. */
+#define EVTCHN_MAX_L3_PAGES 8
+struct evtchn_register_3level {
+       /* IN parameters. */
+       uint32_t nr_pages;
+       GUEST_HANDLE(ulong) evtchn_pending;
+       GUEST_HANDLE(ulong) evtchn_mask;
+       uint32_t nr_vcpus;
+       GUEST_HANDLE(ulong) l2sel_mfns;
+       GUEST_HANDLE(ulong) l2sel_offsets;
+};
+typedef struct evtchn_register_3level evtchn_register_3level_t;
+DEFINE_GUEST_HANDLE(evtchn_register_3level_t);
+
+struct evtchn_register_nlevel {
+       /* IN parameters. */
+       uint32_t level;
+       union {
+               GUEST_HANDLE(evtchn_register_3level_t) l3;
+       } u;
+};
+typedef struct evtchn_register_nlevel evtchn_register_nlevel_t;
+DEFINE_GUEST_HANDLE(evtchn_register_nlevel_t);
+
 struct evtchn_op {
        uint32_t cmd; /* EVTCHNOP_* */
        union {
diff --git a/include/xen/interface/xen.h b/include/xen/interface/xen.h
index a890804..7e51fb7 100644
--- a/include/xen/interface/xen.h
+++ b/include/xen/interface/xen.h
@@ -283,9 +283,14 @@ DEFINE_GUEST_HANDLE_STRUCT(multicall_entry);
 
 /*
  * Event channel endpoints per domain:
+ * 2-level:
  *  1024 if a long is 32 bits; 4096 if a long is 64 bits.
+ * 3-level:
+ *  32k if a long is 32 bits; 256k if a long is 64 bits.
  */
-#define NR_EVENT_CHANNELS (sizeof(unsigned long) * sizeof(unsigned long) * 64)
+#define NR_EVENT_CHANNELS_L2 (sizeof(unsigned long) * sizeof(unsigned long) * 
64)
+#define NR_EVENT_CHANNELS_L3 (NR_EVENT_CHANNELS_L2 * 64)
+#define NR_EVENT_CHANNELS NR_EVENT_CHANNELS_L2 /* for compatibility */
 
 struct vcpu_time_info {
        /*
-- 
1.7.10.4


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