From: Wei Liu <wei.liu2@citrix.com>
To: xen-devel@lists.xen.org
Cc: david.vrabel@citrix.com, Wei Liu <wei.liu2@citrix.com>,
ian.campbell@citrix.com, jbeulich@suse.com,
konrad.wilk@oracle.com
Subject: [PATCH V2 05/13] xen: sync public headers
Date: Mon, 4 Feb 2013 17:23:46 +0000 [thread overview]
Message-ID: <1359998635-16866-6-git-send-email-wei.liu2@citrix.com> (raw)
In-Reply-To: <1359998635-16866-1-git-send-email-wei.liu2@citrix.com>
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
---
include/xen/interface/event_channel.h | 33 +++++++++++++++++++++++++++++++++
include/xen/interface/xen.h | 9 ++++++++-
2 files changed, 41 insertions(+), 1 deletion(-)
diff --git a/include/xen/interface/event_channel.h b/include/xen/interface/event_channel.h
index f494292..9d8b9e7 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; /* for evtchn_{pending,mask} */
+ uint32_t nr_vcpus; /* for l2sel_{mfns,mask} */
+ GUEST_HANDLE(ulong) evtchn_pending;
+ GUEST_HANDLE(ulong) evtchn_mask;
+ 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 {
+ 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..5220e33 100644
--- a/include/xen/interface/xen.h
+++ b/include/xen/interface/xen.h
@@ -283,9 +283,16 @@ 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)
+#if !defined(__XEN__) && !defined(__XEN_TOOLS__)
+#define NR_EVENT_CHANNELS NR_EVENT_CHANNELS_L2 /* for compatibility */
+#endif
struct vcpu_time_info {
/*
--
1.7.10.4
next prev parent reply other threads:[~2013-02-04 17:23 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-04 17:23 [PATCH V2] Implement 3-level event channel in Linux Wei Liu
2013-02-04 17:23 ` [PATCH V2 01/13] xen: add KERN_DEBUG in printk Wei Liu
2013-02-04 17:23 ` [PATCH V2 02/13] xen: fix output of xen_debug_interrupt Wei Liu
2013-02-04 17:23 ` [PATCH V2 03/13] xen: fix error handling path if xen_allocate_irq_dynamic fails Wei Liu
2013-02-04 17:23 ` [PATCH V2 04/13] xen: close evtchn port if binding to irq fails Wei Liu
2013-02-06 8:05 ` Jan Beulich
2013-02-04 17:23 ` Wei Liu [this message]
2013-02-04 17:23 ` [PATCH V2 06/13] xen: introduce test_and_set_mask Wei Liu
2013-02-04 17:23 ` [PATCH V2 07/13] xen: replace raw bit ops with functions Wei Liu
2013-02-04 17:23 ` [PATCH V2 08/13] xen: generalized event channel operations Wei Liu
2013-02-04 17:23 ` [PATCH V2 09/13] xen: dynamically allocate cpu_evtchn_mask Wei Liu
2013-02-04 17:23 ` [PATCH V2 10/13] xen: implement 3-level event channel routines Wei Liu
2013-02-04 17:23 ` [PATCH V2 11/13] xen: introduce xen_event_channel_register_3level Wei Liu
2013-02-04 17:23 ` [PATCH V2 12/13] xen: introduce xen_event_channel_register_nlevel Wei Liu
2013-02-04 17:23 ` [PATCH V2 13/13] xen: register 3-level event channel Wei Liu
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