[PATCH XEN v7 04/29] tools: Refactor /dev/xen/evtchn wrappers into libxenevtchn.

From: Ian Campbell <ian.campbell@citrix.com>
To: ian.jackson@eu.citrix.com, wei.liu2@citrix.com, xen-devel@lists.xen.org
Cc: Ian Campbell <ian.campbell@citrix.com>
Subject: [PATCH XEN v7 04/29] tools: Refactor /dev/xen/evtchn wrappers into libxenevtchn.
Date: Wed, 16 Dec 2015 12:31:11 +0000	[thread overview]
Message-ID: <1450269096-27598-5-git-send-email-ian.campbell@citrix.com> (raw)
In-Reply-To: <1450269096-27598-1-git-send-email-ian.campbell@citrix.com>

libxenevtchn will provide a stable API and ABI for accessing the
evtchn device.

The functions are moved into the xenevtchn namespace to make a clean
break from libxc and avoid ambiguity regarding which interfaces are
stable.

All in-tree users are updated to use the new names.

Upon request (via #define XC_WANT_COMPAT_EVTCHN_API) libxenctrl will
provide a compat API for the old names. This is used by qemu-xen for
the time being. qemu-xen-traditional is updated in lockstep.

This leaves a few event channel related functions which go via privcmd
(EVTCHNOP) rather than ioctls on the /dev/xen/evtchn device in
libxenctrl. Specifically:

 - xc_evtchn_alloc_unbound
 - xc_evtchn_reset
 - xc_evtchn_status

Note that xc_evtchn_alloc_unbound's functionality is also provided by
xenevtchn_bind_unbound_port() (née xc_evtchn_bind_unbound_port) and is
probably redundant.

These functions do not appear to be needed by qemu-dm, qemu-pv
(provision of device model to HVM guests and PV backends respectively)
or by libvchan suggesting they are not needed by non-toolstack uses of
event channels. QEMU does use these in hw/xenpv/xen_domainbuild.c but
that is a "toolstack use".

The new library uses a version script to ensure that only expected
symbols are exported and to version them such that ABI guarantees can
be kept in the future.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
---

Must be applied with:

 - "qemu-xen-traditional: Use libxenevtchn" and a corresponding
   QEMU_TAG update folded here.
 - "mini-os: Include libxenevtchn with libxc"" and a corresponding
   bump to MINIOS_UPSTREAM_REVISION folded in here.

v2: Update doc at same time
    Removed some stray compat thing
v3: Moved to tools/libs/evtchn
v4: typedef the xenevtchn_handle in xenguest.h instead of #include, to
    avoid leaking the libxenevtchn namespace into callers who may not
    want it. (And also to avoid adding lots of -I to places like
    stubdom builds)
v5: Handle NULL passed to _close()
v6: Properly port xen-access to new API (instead of a single function call)
v7: Added mk-headers-$(XEN_TARGET_ARCH) build dependency instead of
    open coding the recursion.
---
 .gitignore                                    |   1 +
 stubdom/Makefile                              |  17 +-
 tools/Makefile                                |   5 +-
 tools/Rules.mk                                |  14 +-
 tools/console/Makefile                        |   2 +
 tools/console/daemon/io.c                     |  43 ++--
 tools/libs/Makefile                           |   1 +
 tools/libs/evtchn/Makefile                    |  65 +++++++
 tools/libs/evtchn/core.c                      |  72 +++++++
 tools/libs/evtchn/freebsd.c                   | 138 +++++++++++++
 tools/libs/evtchn/include/xenevtchn.h         | 150 ++++++++++++++
 tools/libs/evtchn/libxenevtchn.map            |  14 ++
 tools/libs/evtchn/linux.c                     | 136 +++++++++++++
 tools/libs/evtchn/minios.c                    | 269 ++++++++++++++++++++++++++
 tools/libs/evtchn/netbsd.c                    | 147 ++++++++++++++
 tools/libs/evtchn/private.h                   |  25 +++
 tools/libs/evtchn/solaris.c                   | 135 +++++++++++++
 tools/libs/toollog/include/xentoollog.h       |  10 +
 tools/libs/toollog/xtl_core.c                 |  10 +
 tools/libs/toollog/xtl_logger_stdio.c         |  10 +
 tools/libvchan/Makefile                       |   6 +-
 tools/libvchan/init.c                         |  20 +-
 tools/libvchan/io.c                           |  12 +-
 tools/libvchan/libxenvchan.h                  |   3 +-
 tools/libxc/Makefile                          |   8 +-
 tools/libxc/include/xenctrl.h                 |  99 +---------
 tools/libxc/include/xenctrl_compat.h          |  48 +++++
 tools/libxc/include/xenguest.h                |  14 +-
 tools/libxc/xc_evtchn_compat.c                |  75 +++++++
 tools/libxc/xc_freebsd_osdep.c                | 101 ----------
 tools/libxc/xc_linux_osdep.c                  |  95 ---------
 tools/libxc/xc_minios.c                       | 221 ---------------------
 tools/libxc/xc_netbsd.c                       | 109 -----------
 tools/libxc/xc_private.c                      |  40 ----
 tools/libxc/xc_private.h                      |   7 -
 tools/libxc/xc_solaris.c                      |  97 ----------
 tools/libxc/xc_suspend.c                      |  18 +-
 tools/libxl/Makefile                          |   5 +-
 tools/libxl/libxl.c                           |   2 +-
 tools/libxl/libxl_dom_suspend.c               |   4 +-
 tools/libxl/libxl_event.c                     |  14 +-
 tools/libxl/libxl_internal.h                  |   5 +-
 tools/misc/Makefile                           |   7 +-
 tools/misc/xen-hptool.c                       |  13 +-
 tools/misc/xen-lowmemd.c                      |  15 +-
 tools/ocaml/libs/eventchn/Makefile            |   4 +-
 tools/ocaml/libs/eventchn/xeneventchn_stubs.c |  20 +-
 tools/python/setup.py                         |   7 +-
 tools/tests/xen-access/Makefile               |   3 +-
 tools/tests/xen-access/xen-access.c           |  21 +-
 tools/xcutils/Makefile                        |   4 +-
 tools/xenmon/Makefile                         |   2 +
 tools/xenmon/xenbaked.c                       |  13 +-
 tools/xenpaging/Makefile                      |   4 +-
 tools/xenpaging/xenpaging.c                   |  18 +-
 tools/xenpaging/xenpaging.h                   |   3 +-
 tools/xenstore/Makefile                       |   5 +-
 tools/xenstore/xenstored_core.c               |   6 +-
 tools/xenstore/xenstored_domain.c             |  25 +--
 tools/xentrace/Makefile                       |   5 +-
 tools/xentrace/xentrace.c                     |  13 +-
 61 files changed, 1530 insertions(+), 925 deletions(-)
 create mode 100644 tools/libs/evtchn/Makefile
 create mode 100644 tools/libs/evtchn/core.c
 create mode 100644 tools/libs/evtchn/freebsd.c
 create mode 100644 tools/libs/evtchn/include/xenevtchn.h
 create mode 100644 tools/libs/evtchn/libxenevtchn.map
 create mode 100644 tools/libs/evtchn/linux.c
 create mode 100644 tools/libs/evtchn/minios.c
 create mode 100644 tools/libs/evtchn/netbsd.c
 create mode 100644 tools/libs/evtchn/private.h
 create mode 100644 tools/libs/evtchn/solaris.c
 create mode 100644 tools/libxc/include/xenctrl_compat.h
 create mode 100644 tools/libxc/xc_evtchn_compat.c

diff --git a/.gitignore b/.gitignore
index a2c85e1..bf382e5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -59,6 +59,7 @@ stubdom/include
 stubdom/ioemu
 stubdom/xenstore
 stubdom/libxentoollog-*
+stubdom/libxenevtchn-*
 stubdom/libxc-*
 stubdom/lwip-*
 stubdom/mini-os-*
diff --git a/stubdom/Makefile b/stubdom/Makefile
index 9c77205..702d66b 100644
--- a/stubdom/Makefile
+++ b/stubdom/Makefile
@@ -319,6 +319,12 @@ mk-headers-$(XEN_TARGET_ARCH): $(IOEMU_LINKFARM_TARGET)
 	  ln -sf $(XEN_ROOT)/tools/libs/toollog/include/*.h . && \
 	  ln -sf $(XEN_ROOT)/tools/libs/toollog/*.c . && \
 	  ln -sf $(XEN_ROOT)/tools/libs/toollog/Makefile . )
+	mkdir -p libs-$(XEN_TARGET_ARCH)/evtchn/include
+	[ -h libs-$(XEN_TARGET_ARCH)/evtchn/Makefile ] || ( cd libs-$(XEN_TARGET_ARCH)/evtchn && \
+	  ln -sf $(XEN_ROOT)/tools/libs/evtchn/*.h . && \
+	  ln -sf $(XEN_ROOT)/tools/libs/evtchn/include/*.h include/ && \
+	  ln -sf $(XEN_ROOT)/tools/libs/evtchn/*.c . && \
+	  ln -sf $(XEN_ROOT)/tools/libs/evtchn/Makefile . )
 	mkdir -p libxc-$(XEN_TARGET_ARCH)
 	[ -h libxc-$(XEN_TARGET_ARCH)/Makefile ] || ( cd libxc-$(XEN_TARGET_ARCH) && \
 	  ln -sf $(XEN_ROOT)/tools/libxc/*.h . && \
@@ -351,12 +357,21 @@ libs-$(XEN_TARGET_ARCH)/toollog/libxentoollog.a: mk-headers-$(XEN_TARGET_ARCH) $
 	CPPFLAGS="$(TARGET_CPPFLAGS)" CFLAGS="$(TARGET_CFLAGS)" $(MAKE) DESTDIR= -C libs-$(XEN_TARGET_ARCH)/toollog
 
 #######
+# libxenevtchn
+#######
+
+.PHONY: libxenevtchn
+libxenevtchn: libs-$(XEN_TARGET_ARCH)/evtchn/libxenevtchn.a
+libs-$(XEN_TARGET_ARCH)/evtchn/libxenevtchn.a: mk-headers-$(XEN_TARGET_ARCH) $(NEWLIB_STAMPFILE)
+	CPPFLAGS="$(TARGET_CPPFLAGS)" CFLAGS="$(TARGET_CFLAGS)" $(MAKE) DESTDIR= -C libs-$(XEN_TARGET_ARCH)/evtchn
+
+#######
 # libxc
 #######
 
 .PHONY: libxc
 libxc: libxc-$(XEN_TARGET_ARCH)/libxenctrl.a libxc-$(XEN_TARGET_ARCH)/libxenguest.a
-libxc-$(XEN_TARGET_ARCH)/libxenctrl.a: mk-headers-$(XEN_TARGET_ARCH) libxentoollog cross-zlib
+libxc-$(XEN_TARGET_ARCH)/libxenctrl.a: mk-headers-$(XEN_TARGET_ARCH) libxentoollog libxenevtchn cross-zlib
 	CPPFLAGS="$(TARGET_CPPFLAGS)" CFLAGS="$(TARGET_CFLAGS)" $(MAKE) DESTDIR= CONFIG_LIBXC_MINIOS=y -C libxc-$(XEN_TARGET_ARCH)
 
  libxc-$(XEN_TARGET_ARCH)/libxenguest.a: libxc-$(XEN_TARGET_ARCH)/libxenctrl.a
diff --git a/tools/Makefile b/tools/Makefile
index 9f74ac7..99e016a 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -248,8 +248,10 @@ subdir-all-qemu-xen-dir: qemu-xen-dir-find
 		--libdir=$(LIBEXEC_LIB) \
 		--includedir=$(LIBEXEC_INC) \
 		--source-path=$$source \
-		--extra-cflags="-I$(XEN_ROOT)/tools/include \
+		--extra-cflags="-DXC_WANT_COMPAT_EVTCHN_API=1 \
+		-I$(XEN_ROOT)/tools/include \
 		-I$(XEN_ROOT)/tools/libs/toollog/include \
+		-I$(XEN_ROOT)/tools/libs/evtchn/include \
 		-I$(XEN_ROOT)/tools/libxc/include \
 		-I$(XEN_ROOT)/tools/xenstore/include \
 		-I$(XEN_ROOT)/tools/xenstore/compat/include \
@@ -257,6 +259,7 @@ subdir-all-qemu-xen-dir: qemu-xen-dir-find
 		--extra-ldflags="-L$(XEN_ROOT)/tools/libxc \
 		-L$(XEN_ROOT)/tools/xenstore \
 		-Wl,-rpath-link=$(XEN_ROOT)/tools/libs/toollog \
+		-Wl,-rpath-link=$(XEN_ROOT)/tools/libs/evtchn \
 		$(QEMU_UPSTREAM_RPATH)" \
 		--bindir=$(LIBEXEC_BIN) \
 		--datadir=$(SHAREDIR)/qemu-xen \
diff --git a/tools/Rules.mk b/tools/Rules.mk
index 7516ddd..75d02c4 100644
--- a/tools/Rules.mk
+++ b/tools/Rules.mk
@@ -11,6 +11,7 @@ INSTALL = $(XEN_ROOT)/tools/cross-install
 
 XEN_INCLUDE        = $(XEN_ROOT)/tools/include
 XEN_LIBXENTOOLLOG  = $(XEN_ROOT)/tools/libs/toollog
+XEN_LIBXENEVTCHN   = $(XEN_ROOT)/tools/libs/evtchn
 XEN_LIBXC          = $(XEN_ROOT)/tools/libxc
 XEN_XENLIGHT       = $(XEN_ROOT)/tools/libxl
 XEN_XENSTORE       = $(XEN_ROOT)/tools/xenstore
@@ -82,13 +83,18 @@ SHDEPS_libxentoollog =
 LDLIBS_libxentoollog = $(XEN_LIBXENTOOLLOG)/libxentoollog$(libextension)
 SHLIB_libxentoollog  = -Wl,-rpath-link=$(XEN_LIBXENTOOLLOG)
 
+CFLAGS_libxenevtchn = -I$(XEN_LIBXENEVTCHN)/include $(CFLAGS_xeninclude)
+SHDEPS_libxenevtchn =
+LDLIBS_libxenevtchn = $(XEN_LIBXENEVTCHN)/libxenevtchn$(libextension)
+SHLIB_libxenevtchn  = -Wl,-rpath-link=$(XEN_LIBXENEVTCHN)
+
 CFLAGS_libxenctrl = -I$(XEN_LIBXC)/include $(CFLAGS_libxentoollog) $(CFLAGS_xeninclude)
-SHDEPS_libxenctrl = $(SHLIB_libxentoollog) 
+SHDEPS_libxenctrl = $(SHLIB_libxentoollog) $(SHLIB_libxenevtchn)
 LDLIBS_libxenctrl = $(SHDEPS_libxenctrl) $(XEN_LIBXC)/libxenctrl$(libextension)
 SHLIB_libxenctrl  = $(SHDEPS_libxenctrl) -Wl,-rpath-link=$(XEN_LIBXC)
 
-CFLAGS_libxenguest = -I$(XEN_LIBXC)/include $(CFLAGS_xeninclude)
-SHDEPS_libxenguest =
+CFLAGS_libxenguest = -I$(XEN_LIBXC)/include $(CFLAGS_libxenevtchn) $(CFLAGS_xeninclude)
+SHDEPS_libxenguest = $(SHLIB_libxenevtchn)
 LDLIBS_libxenguest = $(SHDEPS_libxenguest) $(XEN_LIBXC)/libxenguest$(libextension)
 SHLIB_libxenguest  = $(SHDEPS_libxenguest) -Wl,-rpath-link=$(XEN_LIBXC)
 
@@ -103,7 +109,7 @@ LDLIBS_libxenstat  = $(SHDEPS_libxenstat) $(XEN_LIBXENSTAT)/libxenstat$(libexten
 SHLIB_libxenstat   = $(SHDEPS_libxenstat) -Wl,-rpath-link=$(XEN_LIBXENSTAT)
 
 CFLAGS_libxenvchan = -I$(XEN_LIBVCHAN)
-SHDEPS_libxenvchan = $(SHLIB_libxenctrl) $(SHLIB_libxenstore)
+SHDEPS_libxenvchan = $(SHLIB_libxenctrl) $(SHLIB_libxenstore) $(SHLIB_libxenevtchn)
 LDLIBS_libxenvchan = $(SHDEPS_libxenvchan) $(XEN_LIBVCHAN)/libxenvchan$(libextension)
 SHLIB_libxenvchan  = $(SHDEPS_libxenvchan) -Wl,-rpath-link=$(XEN_LIBVCHAN)
 
diff --git a/tools/console/Makefile b/tools/console/Makefile
index 77e8f29..4b3a492 100644
--- a/tools/console/Makefile
+++ b/tools/console/Makefile
@@ -3,8 +3,10 @@ include $(XEN_ROOT)/tools/Rules.mk
 
 CFLAGS  += -Werror
 
+CFLAGS  += $(CFLAGS_libxenevtchn)
 CFLAGS  += $(CFLAGS_libxenctrl)
 CFLAGS  += $(CFLAGS_libxenstore)
+LDLIBS += $(LDLIBS_libxenevtchn)
 LDLIBS += $(LDLIBS_libxenctrl)
 LDLIBS += $(LDLIBS_libxenstore)
 LDLIBS += $(SOCKET_LIBS)
diff --git a/tools/console/daemon/io.c b/tools/console/daemon/io.c
index cafc7b7..2f2e9c5 100644
--- a/tools/console/daemon/io.c
+++ b/tools/console/daemon/io.c
@@ -21,6 +21,7 @@
 
 #include "utils.h"
 #include "io.h"
+#include <xenevtchn.h>
 #include <xenstore.h>
 #include <xen/io/console.h>
 #include <xen/grant_table.h>
@@ -101,7 +102,7 @@ struct domain {
 	int ring_ref;
 	evtchn_port_or_error_t local_port;
 	evtchn_port_or_error_t remote_port;
-	xc_evtchn *xce_handle;
+	xenevtchn_handle *xce_handle;
 	int xce_pollfd_idx;
 	struct xencons_interface *interface;
 	int event_count;
@@ -185,7 +186,7 @@ static void buffer_append(struct domain *dom)
 
 	xen_mb();
 	intf->out_cons = cons;
-	xc_evtchn_notify(dom->xce_handle, dom->local_port);
+	xenevtchn_notify(dom->xce_handle, dom->local_port);
 
 	/* Get the data to the logfile as early as possible because if
 	 * no one is listening on the console pty then it will fill up
@@ -584,22 +585,22 @@ static int domain_create_ring(struct domain *dom)
 	dom->local_port = -1;
 	dom->remote_port = -1;
 	if (dom->xce_handle != NULL)
-		xc_evtchn_close(dom->xce_handle);
+		xenevtchn_close(dom->xce_handle);
 
 	/* Opening evtchn independently for each console is a bit
 	 * wasteful, but that's how the code is structured... */
-	dom->xce_handle = xc_evtchn_open(NULL, 0);
+	dom->xce_handle = xenevtchn_open(NULL, 0);
 	if (dom->xce_handle == NULL) {
 		err = errno;
 		goto out;
 	}
  
-	rc = xc_evtchn_bind_interdomain(dom->xce_handle,
+	rc = xenevtchn_bind_interdomain(dom->xce_handle,
 		dom->domid, remote_port);
 
 	if (rc == -1) {
 		err = errno;
-		xc_evtchn_close(dom->xce_handle);
+		xenevtchn_close(dom->xce_handle);
 		dom->xce_handle = NULL;
 		goto out;
 	}
@@ -609,7 +610,7 @@ static int domain_create_ring(struct domain *dom)
 	if (dom->master_fd == -1) {
 		if (!domain_create_tty(dom)) {
 			err = errno;
-			xc_evtchn_close(dom->xce_handle);
+			xenevtchn_close(dom->xce_handle);
 			dom->xce_handle = NULL;
 			dom->local_port = -1;
 			dom->remote_port = -1;
@@ -749,7 +750,7 @@ static void shutdown_domain(struct domain *d)
 	watch_domain(d, false);
 	domain_unmap_interface(d);
 	if (d->xce_handle != NULL)
-		xc_evtchn_close(d->xce_handle);
+		xenevtchn_close(d->xce_handle);
 	d->xce_handle = NULL;
 }
 
@@ -839,7 +840,7 @@ static void handle_tty_read(struct domain *dom)
 		}
 		xen_wmb();
 		intf->in_prod = prod;
-		xc_evtchn_notify(dom->xce_handle, dom->local_port);
+		xenevtchn_notify(dom->xce_handle, dom->local_port);
 	} else {
 		domain_close_tty(dom);
 		shutdown_domain(dom);
@@ -871,7 +872,7 @@ static void handle_ring_read(struct domain *dom)
 	if (dom->is_dead)
 		return;
 
-	if ((port = xc_evtchn_pending(dom->xce_handle)) == -1)
+	if ((port = xenevtchn_pending(dom->xce_handle)) == -1)
 		return;
 
 	dom->event_count++;
@@ -879,7 +880,7 @@ static void handle_ring_read(struct domain *dom)
 	buffer_append(dom);
 
 	if (dom->event_count < RATE_LIMIT_ALLOWANCE)
-		(void)xc_evtchn_unmask(dom->xce_handle, port);
+		(void)xenevtchn_unmask(dom->xce_handle, port);
 }
 
 static void handle_xs(void)
@@ -906,7 +907,7 @@ static void handle_xs(void)
 	free(vec);
 }
 
-static void handle_hv_logs(xc_evtchn *xce_handle, bool force)
+static void handle_hv_logs(xenevtchn_handle *xce_handle, bool force)
 {
 	static char buffer[1024*16];
 	char *bufptr = buffer;
@@ -914,7 +915,7 @@ static void handle_hv_logs(xc_evtchn *xce_handle, bool force)
 	static uint32_t index = 0;
 	evtchn_port_or_error_t port = -1;
 
-	if (!force && ((port = xc_evtchn_pending(xce_handle)) == -1))
+	if (!force && ((port = xenevtchn_pending(xce_handle)) == -1))
 		return;
 
 	do
@@ -938,7 +939,7 @@ static void handle_hv_logs(xc_evtchn *xce_handle, bool force)
 	} while (size == sizeof(buffer));
 
 	if (port != -1)
-		(void)xc_evtchn_unmask(xce_handle, port);
+		(void)xenevtchn_unmask(xce_handle, port);
 }
 
 static void handle_log_reload(void)
@@ -1006,10 +1007,10 @@ void handle_io(void)
 	evtchn_port_or_error_t log_hv_evtchn = -1;
 	int xce_pollfd_idx = -1;
 	int xs_pollfd_idx = -1;
-	xc_evtchn *xce_handle = NULL;
+	xenevtchn_handle *xce_handle = NULL;
 
 	if (log_hv) {
-		xce_handle = xc_evtchn_open(NULL, 0);
+		xce_handle = xenevtchn_open(NULL, 0);
 		if (xce_handle == NULL) {
 			dolog(LOG_ERR, "Failed to open xce handle: %d (%s)",
 			      errno, strerror(errno));
@@ -1018,7 +1019,7 @@ void handle_io(void)
 		log_hv_fd = create_hv_log();
 		if (log_hv_fd == -1)
 			goto out;
-		log_hv_evtchn = xc_evtchn_bind_virq(xce_handle, VIRQ_CON_RING);
+		log_hv_evtchn = xenevtchn_bind_virq(xce_handle, VIRQ_CON_RING);
 		if (log_hv_evtchn == -1) {
 			dolog(LOG_ERR, "Failed to bind to VIRQ_CON_RING: "
 			      "%d (%s)", errno, strerror(errno));
@@ -1047,7 +1048,7 @@ void handle_io(void)
 		xs_pollfd_idx = set_fds(xs_fileno(xs), POLLIN|POLLPRI);
 
 		if (log_hv)
-			xce_pollfd_idx = set_fds(xc_evtchn_fd(xce_handle),
+			xce_pollfd_idx = set_fds(xenevtchn_fd(xce_handle),
 						 POLLIN|POLLPRI);
 
 		if (clock_gettime(CLOCK_MONOTONIC, &ts) < 0)
@@ -1066,7 +1067,7 @@ void handle_io(void)
 			if ((now+5) > d->next_period) {
 				d->next_period = now + RATE_LIMIT_PERIOD;
 				if (d->event_count >= RATE_LIMIT_ALLOWANCE) {
-					(void)xc_evtchn_unmask(d->xce_handle, d->local_port);
+					(void)xenevtchn_unmask(d->xce_handle, d->local_port);
 				}
 				d->event_count = 0;
 			}
@@ -1082,7 +1083,7 @@ void handle_io(void)
 				if (discard_overflowed_data ||
 				    !d->buffer.max_capacity ||
 				    d->buffer.size < d->buffer.max_capacity) {
-					int evtchn_fd = xc_evtchn_fd(d->xce_handle);
+					int evtchn_fd = xenevtchn_fd(d->xce_handle);
 					d->xce_pollfd_idx = set_fds(evtchn_fd,
 								    POLLIN|POLLPRI);
 				}
@@ -1202,7 +1203,7 @@ void handle_io(void)
 		log_hv_fd = -1;
 	}
 	if (xce_handle != NULL) {
-		xc_evtchn_close(xce_handle);
+		xenevtchn_close(xce_handle);
 		xce_handle = NULL;
 	}
 	if (xcg_handle != NULL) {
diff --git a/tools/libs/Makefile b/tools/libs/Makefile
index 73be500..0e3f523 100644
--- a/tools/libs/Makefile
+++ b/tools/libs/Makefile
@@ -3,5 +3,6 @@ include $(XEN_ROOT)/tools/Rules.mk
 
 SUBDIRS-y :=
 SUBDIRS-y += toollog
+SUBDIRS-y += evtchn
 
 all clean install distclean: %: subdirs-%
diff --git a/tools/libs/evtchn/Makefile b/tools/libs/evtchn/Makefile
new file mode 100644
index 0000000..85ed6dc
--- /dev/null
+++ b/tools/libs/evtchn/Makefile
@@ -0,0 +1,65 @@
+XEN_ROOT = $(CURDIR)/../../..
+include $(XEN_ROOT)/tools/Rules.mk
+
+MAJOR    = 1
+MINOR    = 0
+SHLIB_LDFLAGS += -Wl,--version-script=libxenevtchn.map
+
+CFLAGS   += -Werror -Wmissing-prototypes
+CFLAGS   += -I./include $(CFLAGS_xeninclude)
+CFLAGS   += $(CFLAGS_libxentoollog)
+
+SRCS-y                 += core.c
+SRCS-$(CONFIG_Linux)   += linux.c
+SRCS-$(CONFIG_FreeBSD) += freebsd.c
+SRCS-$(CONFIG_SunOS)   += solaris.c
+SRCS-$(CONFIG_NetBSD)  += netbsd.c
+SRCS-$(CONFIG_MiniOS)  += minios.c
+
+LIB_OBJS := $(patsubst %.c,%.o,$(SRCS-y))
+PIC_OBJS := $(patsubst %.c,%.opic,$(SRCS-y))
+
+LIB := libxenevtchn.a
+ifneq ($(nosharedlibs),y)
+LIB += libxenevtchn.so
+endif
+
+.PHONY: all
+all: build
+
+.PHONY: build
+build:
+	$(MAKE) libs
+
+.PHONY: libs
+libs: $(LIB)
+
+
+libxenevtchn.a: $(LIB_OBJS)
+	$(AR) rc $@ $^
+
+libxenevtchn.so: libxenevtchn.so.$(MAJOR)
+	$(SYMLINK_SHLIB) $< $@
+libxenevtchn.so.$(MAJOR): libxenevtchn.so.$(MAJOR).$(MINOR)
+	$(SYMLINK_SHLIB) $< $@
+
+libxenevtchn.so.$(MAJOR).$(MINOR): $(PIC_OBJS) libxenevtchn.map
+	$(CC) $(LDFLAGS) -Wl,$(SONAME_LDFLAG) -Wl,libxenevtchn.so.$(MAJOR) $(SHLIB_LDFLAGS) -o $@ $(PIC_OBJS) $(LDLIBS_libxentoollog) $(APPEND_LDFLAGS)
+
+.PHONY: install
+install: build
+	$(INSTALL_DIR) $(DESTDIR)$(libdir)
+	$(INSTALL_DIR) $(DESTDIR)$(includedir)
+	$(INSTALL_SHLIB) libxenevtchn.so.$(MAJOR).$(MINOR) $(DESTDIR)$(libdir)
+	$(INSTALL_DATA) libxenevtchn.a $(DESTDIR)$(libdir)
+	$(SYMLINK_SHLIB) libxenevtchn.so.$(MAJOR).$(MINOR) $(DESTDIR)$(libdir)/libxenevtchn.so.$(MAJOR)
+	$(SYMLINK_SHLIB) libxenevtchn.so.$(MAJOR) $(DESTDIR)$(libdir)/libxenevtchn.so
+	$(INSTALL_DATA) include/xenevtchn.h $(DESTDIR)$(includedir)
+
+.PHONY: TAGS
+TAGS:
+	etags -t *.c *.h
+
+.PHONY: clean
+clean:
+	rm -rf *.rpm $(LIB) *~ $(DEPS) $(LIB_OBJS) $(PIC_OBJS)
diff --git a/tools/libs/evtchn/core.c b/tools/libs/evtchn/core.c
new file mode 100644
index 0000000..c31e08c
--- /dev/null
+++ b/tools/libs/evtchn/core.c
@@ -0,0 +1,72 @@
+/*
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <unistd.h>
+#include <stdlib.h>
+
+#include "private.h"
+
+xenevtchn_handle *xenevtchn_open(xentoollog_logger *logger, unsigned open_flags)
+{
+    xenevtchn_handle *xce = malloc(sizeof(*xce));
+    int rc;
+
+    if (!xce) return NULL;
+
+    xce->fd = -1;
+    xce->logger = logger;
+    xce->logger_tofree  = NULL;
+
+    if (!xce->logger) {
+        xce->logger = xce->logger_tofree =
+            (xentoollog_logger*)
+            xtl_createlogger_stdiostream(stderr, XTL_PROGRESS, 0);
+        if (!xce->logger) goto err;
+    }
+
+    rc = osdep_evtchn_open(xce);
+    if ( rc  < 0 ) goto err;
+
+    return xce;
+
+err:
+    osdep_evtchn_close(xce);
+    xtl_logger_destroy(xce->logger_tofree);
+    free(xce);
+    return NULL;
+}
+
+int xenevtchn_close(xenevtchn_handle *xce)
+{
+    int rc;
+
+    if ( !xce )
+        return 0;
+
+    rc = osdep_evtchn_close(xce);
+    xtl_logger_destroy(xce->logger_tofree);
+    free(xce);
+    return rc;
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/libs/evtchn/freebsd.c b/tools/libs/evtchn/freebsd.c
new file mode 100644
index 0000000..636f052
--- /dev/null
+++ b/tools/libs/evtchn/freebsd.c
@@ -0,0 +1,138 @@
+ /******************************************************************************
+ *
+ * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Split off from xc_freebsd_osdep.c
+ */
+
+#include <fcntl.h>
+#include <unistd.h>
+
+#include <sys/ioctl.h>
+
+#include <xen/sys/evtchn.h>
+
+#include "private.h"
+
+#define EVTCHN_DEV      "/dev/xen/evtchn"
+
+int osdep_evtchn_open(xenevtchn_handle *xce)
+{
+    int fd = open(EVTCHN_DEV, O_RDWR);
+    if ( fd == -1 )
+        return -1;
+    xce->fd = fd;
+    return 0;
+}
+
+int osdep_evtchn_close(xenevtchn_handle *xce)
+{
+    if ( xce->fd == -1 )
+        return 0;
+
+    return close(xce->fd);
+}
+
+int xenevtchn_fd(xenevtchn_handle *xce)
+{
+    return xce->fd;
+}
+
+int xenevtchn_notify(xenevtchn_handle *xce, evtchn_port_t port)
+{
+    int fd = xce->fd;
+    struct ioctl_evtchn_notify notify;
+
+    notify.port = port;
+
+    return ioctl(fd, IOCTL_EVTCHN_NOTIFY, &notify);
+}
+
+evtchn_port_or_error_t xenevtchn_bind_unbound_port(xenevtchn_handle *xce, int domid)
+{
+    int ret, fd = xce->fd;
+    struct ioctl_evtchn_bind_unbound_port bind;
+
+    bind.remote_domain = domid;
+
+    ret = ioctl(fd, IOCTL_EVTCHN_BIND_UNBOUND_PORT, &bind);
+    return ( ret == 0 ) ? bind.port : ret;
+}
+
+evtchn_port_or_error_t
+xenevtchn_bind_interdomain(xenevtchn_handle *xce, int domid, evtchn_port_t remote_port)
+{
+    int ret, fd = xce->fd;
+    struct ioctl_evtchn_bind_interdomain bind;
+
+    bind.remote_domain = domid;
+    bind.remote_port = remote_port;
+
+    ret = ioctl(fd, IOCTL_EVTCHN_BIND_INTERDOMAIN, &bind);
+    return ( ret == 0 ) ? bind.port : ret;
+}
+
+evtchn_port_or_error_t xenevtchn_bind_virq(xenevtchn_handle *xce, unsigned int virq)
+{
+    int ret, fd = xce->fd;
+    struct ioctl_evtchn_bind_virq bind;
+
+    bind.virq = virq;
+
+    ret = ioctl(fd, IOCTL_EVTCHN_BIND_VIRQ, &bind);
+    return ( ret == 0 ) ? bind.port : ret;
+}
+
+int xenevtchn_unbind(xenevtchn_handle *xce, evtchn_port_t port)
+{
+    int fd = xce->fd;
+    struct ioctl_evtchn_unbind unbind;
+
+    unbind.port = port;
+
+    return ioctl(fd, IOCTL_EVTCHN_UNBIND, &unbind);
+}
+
+evtchn_port_or_error_t xenevtchn_pending(xenevtchn_handle *xce)
+{
+    int fd = xce->fd;
+    evtchn_port_t port;
+
+    if ( read(fd, &port, sizeof(port)) != sizeof(port) )
+        return -1;
+
+    return port;
+}
+
+int xenevtchn_unmask(xenevtchn_handle *xce, evtchn_port_t port)
+{
+    int fd = xce->fd;
+
+    if ( write(fd, &port, sizeof(port)) != sizeof(port) )
+        return -1;
+    return 0;
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/libs/evtchn/include/xenevtchn.h b/tools/libs/evtchn/include/xenevtchn.h
new file mode 100644
index 0000000..3380fa3
--- /dev/null
+++ b/tools/libs/evtchn/include/xenevtchn.h
@@ -0,0 +1,150 @@
+/*
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Split off from:
+ * xenctrl.h
+ *
+ * A library for low-level access to the Xen control interfaces.
+ *
+ * Copyright (c) 2003-2004, K A Fraser.
+ */
+
+#ifndef XENEVTCHN_H
+#define XENEVTCHN_H
+
+#include <stdint.h>
+
+#include <xen/event_channel.h>
+
+/* A port identifier is guaranteed to fit in 31 bits. */
+typedef int evtchn_port_or_error_t;
+
+typedef struct xenevtchn_handle xenevtchn_handle;
+
+/* Callers who don't care don't need to #include <xentoollog.h> */
+typedef struct xentoollog_logger xentoollog_logger;
+
+/*
+ * EVENT CHANNEL FUNCTIONS
+ *
+ * None of these do any logging.
+ */
+
+/*
+ * Return a handle to the event channel driver, or NULL on failure, in
+ * which case errno will be set appropriately.
+ *
+ * Note:
+ * After fork a child process must not use any opened xc evtchn
+ * handle inherited from their parent. They must open a new handle if
+ * they want to interact with xc.
+ *
+ * Before Xen pre-4.1 this function would sometimes report errors with perror.
+ */
+/* Currently no flags are defined */
+xenevtchn_handle *xenevtchn_open(xentoollog_logger *logger, unsigned open_flags);
+
+/*
+ * Close a handle previously allocated with xenevtchn_open().
+ */
+int xenevtchn_close(xenevtchn_handle *xce);
+
+/*
+ * Return an fd that can be select()ed on.
+ *
+ * Note that due to bugs, setting this fd to non blocking may not
+ * work: you would hope that it would result in xenevtchn_pending
+ * failing with EWOULDBLOCK if there are no events signaled, but in
+ * fact it may block.  (Bug is present in at least Linux 3.12, and
+ * perhaps on other platforms or later version.)
+ *
+ * To be safe, you must use poll() or select() before each call to
+ * xenevtchn_pending.  If you have multiple threads (or processes)
+ * sharing a single xce handle this will not work, and there is no
+ * straightforward workaround.  Please design your program some other
+ * way.
+ */
+int xenevtchn_fd(xenevtchn_handle *xce);
+
+/*
+ * Notify the given event channel. Returns -1 on failure, in which case
+ * errno will be set appropriately.
+ */
+int xenevtchn_notify(xenevtchn_handle *xce, evtchn_port_t port);
+
+/*
+ * Returns a new event port awaiting interdomain connection from the given
+ * domain ID, or -1 on failure, in which case errno will be set appropriately.
+ */
+evtchn_port_or_error_t
+xenevtchn_bind_unbound_port(xenevtchn_handle *xce, int domid);
+
+/*
+ * Returns a new event port bound to the remote port for the given domain ID,
+ * or -1 on failure, in which case errno will be set appropriately.
+ */
+evtchn_port_or_error_t
+xenevtchn_bind_interdomain(xenevtchn_handle *xce, int domid,
+                           evtchn_port_t remote_port);
+
+/*
+ * Bind an event channel to the given VIRQ. Returns the event channel bound to
+ * the VIRQ, or -1 on failure, in which case errno will be set appropriately.
+ */
+evtchn_port_or_error_t
+xenevtchn_bind_virq(xenevtchn_handle *xce, unsigned int virq);
+
+/*
+ * Unbind the given event channel. Returns -1 on failure, in which case errno
+ * will be set appropriately.
+ */
+int xenevtchn_unbind(xenevtchn_handle *xce, evtchn_port_t port);
+
+/*
+ * Return the next event channel to become pending, or -1 on failure, in which
+ * case errno will be set appropriately.
+ *
+ * At the hypervisor level the event channel will have been masked,
+ * and then cleared, by the underlying machinery (evtchn kernel
+ * driver, or equivalent).  So if the event channel is signaled again
+ * after it is returned here, it will be queued up, and delivered
+ * again after you unmask it.  (See the documentation in the Xen
+ * public header event_channel.h.)
+ *
+ * On receiving the notification from xenevtchn_pending, you should
+ * normally: check (by other means) what work needs doing; do the
+ * necessary work (if any); unmask the event channel with
+ * xenevtchn_unmask (if you want to receive any further
+ * notifications).
+ */
+evtchn_port_or_error_t
+xenevtchn_pending(xenevtchn_handle *xce);
+
+/*
+ * Unmask the given event channel. Returns -1 on failure, in which case errno
+ * will be set appropriately.
+ */
+int xenevtchn_unmask(xenevtchn_handle *xce, evtchn_port_t port);
+
+#endif
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/libs/evtchn/libxenevtchn.map b/tools/libs/evtchn/libxenevtchn.map
new file mode 100644
index 0000000..1437940
--- /dev/null
+++ b/tools/libs/evtchn/libxenevtchn.map
@@ -0,0 +1,14 @@
+VERS_1.0 {
+	global:
+		xenevtchn_fd;
+		xenevtchn_bind_unbound_port;
+		xenevtchn_unbind;
+		xenevtchn_unmask;
+		xenevtchn_notify;
+		xenevtchn_bind_interdomain;
+		xenevtchn_bind_virq;
+		xenevtchn_open;
+		xenevtchn_close;
+		xenevtchn_pending;
+	local: *; /* Do not expose anything by default */
+};
diff --git a/tools/libs/evtchn/linux.c b/tools/libs/evtchn/linux.c
new file mode 100644
index 0000000..27fd6e9
--- /dev/null
+++ b/tools/libs/evtchn/linux.c
@@ -0,0 +1,136 @@
+/*
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Split out from xc_linus_osdep.c:
+ *
+ * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#include <sys/ioctl.h>
+
+#include <xen/sys/evtchn.h>
+
+#include "private.h"
+
+int osdep_evtchn_open(xenevtchn_handle *xce)
+{
+    int fd = open("/dev/xen/evtchn", O_RDWR);
+    if ( fd == -1 )
+        return -1;
+    xce->fd = fd;
+    return 0;
+}
+
+int osdep_evtchn_close(xenevtchn_handle *xce)
+{
+    if ( xce->fd == -1 )
+        return 0;
+
+    return close(xce->fd);
+}
+
+int xenevtchn_fd(xenevtchn_handle *xce)
+{
+    return xce->fd;
+}
+
+int xenevtchn_notify(xenevtchn_handle *xce, evtchn_port_t port)
+{
+    int fd = xce->fd;
+    struct ioctl_evtchn_notify notify;
+
+    notify.port = port;
+
+    return ioctl(fd, IOCTL_EVTCHN_NOTIFY, &notify);
+}
+
+evtchn_port_or_error_t xenevtchn_bind_unbound_port(xenevtchn_handle *xce,
+                                                   int domid)
+{
+    int fd = xce->fd;
+    struct ioctl_evtchn_bind_unbound_port bind;
+
+    bind.remote_domain = domid;
+
+    return ioctl(fd, IOCTL_EVTCHN_BIND_UNBOUND_PORT, &bind);
+}
+
+evtchn_port_or_error_t xenevtchn_bind_interdomain(xenevtchn_handle *xce,
+                                                  int domid,
+                                                  evtchn_port_t remote_port)
+{
+    int fd = xce->fd;
+    struct ioctl_evtchn_bind_interdomain bind;
+
+    bind.remote_domain = domid;
+    bind.remote_port = remote_port;
+
+    return ioctl(fd, IOCTL_EVTCHN_BIND_INTERDOMAIN, &bind);
+}
+
+evtchn_port_or_error_t xenevtchn_bind_virq(xenevtchn_handle *xce,
+                                           unsigned int virq)
+{
+    int fd = xce->fd;
+    struct ioctl_evtchn_bind_virq bind;
+
+    bind.virq = virq;
+
+    return ioctl(fd, IOCTL_EVTCHN_BIND_VIRQ, &bind);
+}
+
+int xenevtchn_unbind(xenevtchn_handle *xce, evtchn_port_t port)
+{
+    int fd = xce->fd;
+    struct ioctl_evtchn_unbind unbind;
+
+    unbind.port = port;
+
+    return ioctl(fd, IOCTL_EVTCHN_UNBIND, &unbind);
+}
+
+evtchn_port_or_error_t xenevtchn_pending(xenevtchn_handle *xce)
+{
+    int fd = xce->fd;
+    evtchn_port_t port;
+
+    if ( read(fd, &port, sizeof(port)) != sizeof(port) )
+        return -1;
+
+    return port;
+}
+
+int xenevtchn_unmask(xenevtchn_handle *xce, evtchn_port_t port)
+{
+    int fd = xce->fd;
+
+    if ( write(fd, &port, sizeof(port)) != sizeof(port) )
+        return -1;
+    return 0;
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/libs/evtchn/minios.c b/tools/libs/evtchn/minios.c
new file mode 100644
index 0000000..fb913a2
--- /dev/null
+++ b/tools/libs/evtchn/minios.c
@@ -0,0 +1,269 @@
+/******************************************************************************
+ *
+ * Copyright 2007-2008 Samuel Thibault <samuel.thibault@eu.citrix.com>.
+ * All rights reserved.
+ * Use is subject to license terms.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Split off from xc_minios.c
+ */
+
+#include "xen-external/bsd-sys-queue.h"
+#include <mini-os/types.h>
+#include <mini-os/os.h>
+#include <mini-os/lib.h>
+#include <mini-os/events.h>
+#include <mini-os/wait.h>
+
+#include <sys/socket.h>
+
+#include <assert.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <malloc.h>
+
+#include "private.h"
+
+extern void minios_evtchn_close_fd(int fd);
+
+extern struct wait_queue_head event_queue;
+
+//void minios_evtchn_close_fd(int fd);
+
+/* XXX Note: This is not threadsafe */
+static struct evtchn_port_info* port_alloc(int fd) {
+    struct evtchn_port_info *port_info;
+    port_info = malloc(sizeof(struct evtchn_port_info));
+    if (port_info == NULL)
+        return NULL;
+    port_info->pending = 0;
+    port_info->port = -1;
+    port_info->bound = 0;
+
+    LIST_INSERT_HEAD(&files[fd].evtchn.ports, port_info, list);
+    return port_info;
+}
+
+static void port_dealloc(struct evtchn_port_info *port_info) {
+    if (port_info->bound)
+        unbind_evtchn(port_info->port);
+    LIST_REMOVE(port_info, list);
+    free(port_info);
+}
+
+int osdep_evtchn_open(xenevtchn_handle *xce)
+{
+    int fd = alloc_fd(FTYPE_EVTCHN);
+    if ( fd == -1 )
+        return -1;
+    LIST_INIT(&files[fd].evtchn.ports);
+    xce->fd = fd;
+    printf("evtchn_open() -> %d\n", fd);
+    return 0;
+}
+
+int osdep_evtchn_close(xenevtchn_handle *xce)
+{
+    if ( xce->fd == -1 )
+        return 0;
+
+    return close(xce->fd);
+}
+
+void minios_evtchn_close_fd(int fd)
+{
+    struct evtchn_port_info *port_info, *tmp;
+    LIST_FOREACH_SAFE(port_info, &files[fd].evtchn.ports, list, tmp)
+        port_dealloc(port_info);
+
+    files[fd].type = FTYPE_NONE;
+}
+
+int xenevtchn_fd(xenevtchn_handle *xce)
+{
+    return xce->fd;
+}
+
+int xenevtchn_notify(xenevtchn_handle *xce, evtchn_port_t port)
+{
+    int ret;
+
+    ret = notify_remote_via_evtchn(port);
+
+    if (ret < 0) {
+	errno = -ret;
+	ret = -1;
+    }
+    return ret;
+}
+
+static void evtchn_handler(evtchn_port_t port, struct pt_regs *regs, void *data)
+{
+    int fd = (int)(intptr_t)data;
+    struct evtchn_port_info *port_info;
+    assert(files[fd].type == FTYPE_EVTCHN);
+    mask_evtchn(port);
+    LIST_FOREACH(port_info, &files[fd].evtchn.ports, list) {
+        if (port_info->port == port)
+            goto found;
+    }
+    printk("Unknown port for handle %d\n", fd);
+    return;
+
+ found:
+    port_info->pending = 1;
+    files[fd].read = 1;
+    wake_up(&event_queue);
+}
+
+evtchn_port_or_error_t xenevtchn_bind_unbound_port(xenevtchn_handle *xce, int domid)
+{
+    int fd = xce->fd;
+    struct evtchn_port_info *port_info;
+    int ret;
+    evtchn_port_t port;
+
+    assert(get_current() == main_thread);
+    port_info = port_alloc(fd);
+    if (port_info == NULL)
+	return -1;
+
+    printf("xenevtchn_bind_unbound_port(%d)", domid);
+    ret = evtchn_alloc_unbound(domid, evtchn_handler, (void*)(intptr_t)fd, &port);
+    printf(" = %d\n", ret);
+
+    if (ret < 0) {
+	port_dealloc(port_info);
+	errno = -ret;
+	return -1;
+    }
+    port_info->bound = 1;
+    port_info->port = port;
+    unmask_evtchn(port);
+    return port;
+}
+
+evtchn_port_or_error_t xenevtchn_bind_interdomain(xenevtchn_handle *xce, int domid,
+                                                  evtchn_port_t remote_port)
+{
+    int fd = xce->fd;
+    struct evtchn_port_info *port_info;
+    evtchn_port_t local_port;
+    int ret;
+
+    assert(get_current() == main_thread);
+    port_info = port_alloc(fd);
+    if (port_info == NULL)
+	return -1;
+
+    printf("xenevtchn_bind_interdomain(%d, %"PRId32")", domid, remote_port);
+    ret = evtchn_bind_interdomain(domid, remote_port, evtchn_handler, (void*)(intptr_t)fd, &local_port);
+    printf(" = %d\n", ret);
+
+    if (ret < 0) {
+	port_dealloc(port_info);
+	errno = -ret;
+	return -1;
+    }
+    port_info->bound = 1;
+    port_info->port = local_port;
+    unmask_evtchn(local_port);
+    return local_port;
+}
+
+int xenevtchn_unbind(xenevtchn_handle *xce, evtchn_port_t port)
+{
+    int fd = xce->fd;
+    struct evtchn_port_info *port_info;
+
+    LIST_FOREACH(port_info, &files[fd].evtchn.ports, list) {
+        if (port_info->port == port) {
+            port_dealloc(port_info);
+            return 0;
+        }
+    }
+    printf("Warning: couldn't find port %"PRId32" for xc handle %x\n", port, fd);
+    errno = EINVAL;
+    return -1;
+}
+
+evtchn_port_or_error_t xenevtchn_bind_virq(xenevtchn_handle *xce, unsigned int virq)
+{
+    int fd = xce->fd;
+    struct evtchn_port_info *port_info;
+    evtchn_port_t port;
+
+    assert(get_current() == main_thread);
+    port_info = port_alloc(fd);
+    if (port_info == NULL)
+	return -1;
+
+    printf("xenevtchn_bind_virq(%d)", virq);
+    port = bind_virq(virq, evtchn_handler, (void*)(intptr_t)fd);
+
+    if (port < 0) {
+	port_dealloc(port_info);
+	errno = -port;
+	return -1;
+    }
+    port_info->bound = 1;
+    port_info->port = port;
+    unmask_evtchn(port);
+    return port;
+}
+
+evtchn_port_or_error_t xenevtchn_pending(xenevtchn_handle *xce)
+{
+    int fd = xce->fd;
+    struct evtchn_port_info *port_info;
+    unsigned long flags;
+    evtchn_port_t ret = -1;
+
+    local_irq_save(flags);
+    files[fd].read = 0;
+
+    LIST_FOREACH(port_info, &files[fd].evtchn.ports, list) {
+        if (port_info->port != -1 && port_info->pending) {
+            if (ret == -1) {
+                ret = port_info->port;
+                port_info->pending = 0;
+            } else {
+                files[fd].read = 1;
+                break;
+            }
+        }
+    }
+    local_irq_restore(flags);
+    return ret;
+}
+
+int xenevtchn_unmask(xenevtchn_handle *xce, evtchn_port_t port)
+{
+    unmask_evtchn(port);
+    return 0;
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/libs/evtchn/netbsd.c b/tools/libs/evtchn/netbsd.c
new file mode 100644
index 0000000..c4123fe
--- /dev/null
+++ b/tools/libs/evtchn/netbsd.c
@@ -0,0 +1,147 @@
+/******************************************************************************
+ *
+ * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Split out from xc_netbsd.c
+ */
+
+#include <fcntl.h>
+#include <unistd.h>
+
+#include <sys/ioctl.h>
+
+#include <xen/sys/evtchn.h>
+
+#include "private.h"
+
+#define EVTCHN_DEV_NAME  "/dev/xenevt"
+
+int osdep_evtchn_open(xenevtchn_handle *xce)
+{
+    int fd = open(EVTCHN_DEV_NAME, O_NONBLOCK|O_RDWR);
+    if ( fd == -1 )
+        return -1;
+    xce->fd = fd;
+    return 0;
+}
+
+int osdep_evtchn_close(xenevtchn_handle *xce)
+{
+    if ( xce->fd == -1 )
+        return 0;
+
+    return close(xce->fd);
+}
+
+int xenevtchn_fd(xenevtchn_handle *xce)
+{
+    return xce->fd;
+}
+
+int xenevtchn_notify(xenevtchn_handle *xce, evtchn_port_t port)
+{
+    int fd = xce->fd;
+    struct ioctl_evtchn_notify notify;
+
+    notify.port = port;
+
+    return ioctl(fd, IOCTL_EVTCHN_NOTIFY, &notify);
+}
+
+evtchn_port_or_error_t xenevtchn_bind_unbound_port(xenevtchn_handle * xce, int domid)
+{
+    int fd = xce->fd;
+    struct ioctl_evtchn_bind_unbound_port bind;
+    int ret;
+
+    bind.remote_domain = domid;
+
+    ret = ioctl(fd, IOCTL_EVTCHN_BIND_UNBOUND_PORT, &bind);
+    if (ret == 0)
+	return bind.port;
+    else
+	return -1;
+}
+
+evtchn_port_or_error_t xenevtchn_bind_interdomain(xenevtchn_handle *xce, int domid,
+                                                  evtchn_port_t remote_port)
+{
+    int fd = xce->fd;
+    struct ioctl_evtchn_bind_interdomain bind;
+    int ret;
+
+    bind.remote_domain = domid;
+    bind.remote_port = remote_port;
+
+    ret = ioctl(fd, IOCTL_EVTCHN_BIND_INTERDOMAIN, &bind);
+    if (ret == 0)
+	return bind.port;
+    else
+	return -1;
+}
+
+int xenevtchn_unbind(xenevtchn_handle *xce, evtchn_port_t port)
+{
+    int fd = xce->fd;
+    struct ioctl_evtchn_unbind unbind;
+
+    unbind.port = port;
+
+    return ioctl(fd, IOCTL_EVTCHN_UNBIND, &unbind);
+}
+
+evtchn_port_or_error_t xenevtchn_bind_virq(xenevtchn_handle *xce, unsigned int virq)
+{
+    int fd = xce->fd;
+    struct ioctl_evtchn_bind_virq bind;
+    int err;
+
+    bind.virq = virq;
+
+    err = ioctl(fd, IOCTL_EVTCHN_BIND_VIRQ, &bind);
+    if (err)
+	return -1;
+    else
+	return bind.port;
+}
+
+evtchn_port_or_error_t xenevtchn_pending(xenevtchn_handle *xce)
+{
+    int fd = xce->fd;
+    evtchn_port_t port;
+
+    if ( read_exact(fd, (char *)&port, sizeof(port)) == -1 )
+        return -1;
+
+    return port;
+}
+
+int xenevtchn_unmask(xenevtchn_handle *xce, evtchn_port_t port)
+{
+    int fd = xce->fd;
+    return write_exact(fd, (char *)&port, sizeof(port));
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/libs/evtchn/private.h b/tools/libs/evtchn/private.h
new file mode 100644
index 0000000..fcd0e96
--- /dev/null
+++ b/tools/libs/evtchn/private.h
@@ -0,0 +1,25 @@
+#ifndef XENEVTCHN_PRIVATE_H
+#define XENEVTCHN_PRIVATE_H
+
+#include <xentoollog.h>
+#include <xenevtchn.h>
+
+struct xenevtchn_handle {
+    xentoollog_logger *logger, *logger_tofree;
+    int fd;
+};
+
+int osdep_evtchn_open(xenevtchn_handle *xce);
+int osdep_evtchn_close(xenevtchn_handle *xce);
+
+#endif
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/libs/evtchn/solaris.c b/tools/libs/evtchn/solaris.c
new file mode 100644
index 0000000..114cefb
--- /dev/null
+++ b/tools/libs/evtchn/solaris.c
@@ -0,0 +1,135 @@
+/******************************************************************************
+ *
+ * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Split out from xc_solaris.c
+ */
+
+#include <fcntl.h>
+#include <unistd.h>
+
+#include <sys/ioctl.h>
+
+#include <xen/sys/evtchn.h>
+
+#include "private.h"
+
+int osdep_evtchn_open(xenevtchn_handle *xce)
+{
+    int fd;
+
+    if ( (fd = open("/dev/xen/evtchn", O_RDWR)) == -1 )
+    {
+        PERROR("Could not open event channel interface");
+        return -1;
+    }
+
+    xce->fd = fd;
+    return 0;
+}
+
+int osdep_evtchn_close(xenevtchn_handle *xce)
+{
+    if ( xce->fd == -1 )
+        return 0;
+
+    return close(xce->fd);
+}
+
+int xenevtchn_fd(xenevtchn_handle *xce)
+{
+    return xce->fd;
+}
+
+int xenevtchn_notify(xenevtchn_handle *xce, evtchn_port_t port)
+{
+    int fd = xce->fd;
+    struct ioctl_evtchn_notify notify;
+
+    notify.port = port;
+
+    return ioctl(fd, IOCTL_EVTCHN_NOTIFY, &notify);
+}
+
+evtchn_port_or_error_t xenevtchn_bind_unbound_port(xenevtchn_handle *xce, int domid)
+{
+    int fd = xce->fd;
+    struct ioctl_evtchn_bind_unbound_port bind;
+
+    bind.remote_domain = domid;
+
+    return ioctl(fd, IOCTL_EVTCHN_BIND_UNBOUND_PORT, &bind);
+}
+
+evtchn_port_or_error_t xenevtchn_bind_interdomain(xenevtchn_handle *xce, int domid,
+                                                  evtchn_port_t remote_port)
+{
+    int fd = xce->fd;
+    struct ioctl_evtchn_bind_interdomain bind;
+
+    bind.remote_domain = domid;
+    bind.remote_port = remote_port;
+
+    return ioctl(fd, IOCTL_EVTCHN_BIND_INTERDOMAIN, &bind);
+}
+
+evtchn_port_or_error_t xenevtchn_bind_virq(xenevtchn_handle *xce, unsigned int virq)
+{
+    int fd = xce->fd;
+    struct ioctl_evtchn_bind_virq bind;
+
+    bind.virq = virq;
+
+    return ioctl(fd, IOCTL_EVTCHN_BIND_VIRQ, &bind);
+}
+
+int xenevtchn_unbind(xenevtchn_handle *xce, evtchn_port_t port)
+{
+    int fd = xce->fd;
+    struct ioctl_evtchn_unbind unbind;
+
+    unbind.port = port;
+
+    return ioctl(fd, IOCTL_EVTCHN_UNBIND, &unbind);
+}
+
+evtchn_port_or_error_t xenevtchn_pending(xenevtchn_handle *xce)
+{
+    int fd = xce->fd;
+    evtchn_port_t port;
+
+    if ( read_exact(fd, (char *)&port, sizeof(port)) == -1 )
+        return -1;
+
+    return port;
+}
+
+int xenevtchn_unmask(xenevtchn_handle *xce, evtchn_port_t port)
+{
+    int fd = xce->fd;
+    return write_exact(fd, (char *)&port, sizeof(port));
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/libs/toollog/include/xentoollog.h b/tools/libs/toollog/include/xentoollog.h
index 853e9c7..76f17fe 100644
--- a/tools/libs/toollog/include/xentoollog.h
+++ b/tools/libs/toollog/include/xentoollog.h
@@ -134,3 +134,13 @@ const char *xtl_level_to_string(xentoollog_level); /* never fails */
 
 
 #endif /* XENTOOLLOG_H */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/libs/toollog/xtl_core.c b/tools/libs/toollog/xtl_core.c
index c4724a0..099d2f3 100644
--- a/tools/libs/toollog/xtl_core.c
+++ b/tools/libs/toollog/xtl_core.c
@@ -81,3 +81,13 @@ void xtl_logger_destroy(struct xentoollog_logger *logger) {
     if (!logger) return;
     logger->destroy(logger);
 }
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/libs/toollog/xtl_logger_stdio.c b/tools/libs/toollog/xtl_logger_stdio.c
index 0cd9206..f9c5bd8 100644
--- a/tools/libs/toollog/xtl_logger_stdio.c
+++ b/tools/libs/toollog/xtl_logger_stdio.c
@@ -190,3 +190,13 @@ xentoollog_logger_stdiostream *xtl_createlogger_stdiostream
 
     return XTL_NEW_LOGGER(stdiostream, newlogger);
 }
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/libvchan/Makefile b/tools/libvchan/Makefile
index 3c50fe6..84128a3 100644
--- a/tools/libvchan/Makefile
+++ b/tools/libvchan/Makefile
@@ -10,9 +10,9 @@ NODE_OBJS = node.o
 NODE2_OBJS = node-select.o
 
 LIBVCHAN_PIC_OBJS = $(patsubst %.o,%.opic,$(LIBVCHAN_OBJS))
-LIBVCHAN_LIBS = $(LDLIBS_libxenstore) $(LDLIBS_libxenctrl)
-$(LIBVCHAN_OBJS) $(LIBVCHAN_PIC_OBJS): CFLAGS += $(CFLAGS_libxenstore) $(CFLAGS_libxenctrl)
-$(NODE_OBJS) $(NODE2_OBJS): CFLAGS += $(CFLAGS_libxenctrl)
+LIBVCHAN_LIBS = $(LDLIBS_libxenstore) $(LDLIBS_libxenctrl) $(LDLIBS_libxenevtchn)
+$(LIBVCHAN_OBJS) $(LIBVCHAN_PIC_OBJS): CFLAGS += $(CFLAGS_libxenstore) $(CFLAGS_libxenctrl) $(CFLAGS_libxenevtchn)
+$(NODE_OBJS) $(NODE2_OBJS): CFLAGS += $(CFLAGS_libxenctrl) $(CFLAGS_libxenevtchn)
 
 MAJOR = 1.0
 MINOR = 0
diff --git a/tools/libvchan/init.c b/tools/libvchan/init.c
index 77be4e7..66cb103 100644
--- a/tools/libvchan/init.c
+++ b/tools/libvchan/init.c
@@ -216,25 +216,25 @@ static int init_evt_srv(struct libxenvchan *ctrl, int domain, xentoollog_logger
 {
 	evtchn_port_or_error_t port;
 
-	ctrl->event = xc_evtchn_open(logger, 0);
+	ctrl->event = xenevtchn_open(logger, 0);
 	if (!ctrl->event)
 		return -1;
 
-	port = xc_evtchn_bind_unbound_port(ctrl->event, domain);
+	port = xenevtchn_bind_unbound_port(ctrl->event, domain);
 	if (port < 0)
 		goto fail;
 	ctrl->event_port = port;
 
-	if (xc_evtchn_unmask(ctrl->event, ctrl->event_port))
+	if (xenevtchn_unmask(ctrl->event, ctrl->event_port))
 		goto fail;
 
 	return 0;
 
 fail:
 	if (port >= 0)
-		xc_evtchn_unbind(ctrl->event, port);
+		xenevtchn_unbind(ctrl->event, port);
 
-	xc_evtchn_close(ctrl->event);
+	xenevtchn_close(ctrl->event);
 	ctrl->event = NULL;
 
 	return -1;
@@ -346,26 +346,26 @@ static int init_evt_cli(struct libxenvchan *ctrl, int domain, xentoollog_logger
 {
 	evtchn_port_or_error_t port;
 
-	ctrl->event = xc_evtchn_open(logger, 0);
+	ctrl->event = xenevtchn_open(logger, 0);
 	if (!ctrl->event)
 		return -1;
 
-	port = xc_evtchn_bind_interdomain(ctrl->event,
+	port = xenevtchn_bind_interdomain(ctrl->event,
 		domain, ctrl->event_port);
 	if (port < 0)
 		goto fail;
 	ctrl->event_port = port;
 
-	if (xc_evtchn_unmask(ctrl->event, ctrl->event_port))
+	if (xenevtchn_unmask(ctrl->event, ctrl->event_port))
 		goto fail;
 
 	return 0;
 
 fail:
 	if (port >= 0)
-		xc_evtchn_unbind(ctrl->event, port);
+		xenevtchn_unbind(ctrl->event, port);
 
-	xc_evtchn_close(ctrl->event);
+	xenevtchn_close(ctrl->event);
 	ctrl->event = NULL;
 
 	return -1;
diff --git a/tools/libvchan/io.c b/tools/libvchan/io.c
index 8a9629b..4461490 100644
--- a/tools/libvchan/io.c
+++ b/tools/libvchan/io.c
@@ -105,7 +105,7 @@ static inline int send_notify(struct libxenvchan *ctrl, uint8_t bit)
 	notify = ctrl->is_server ? &ctrl->ring->srv_notify : &ctrl->ring->cli_notify;
 	prev = __sync_fetch_and_and(notify, ~bit);
 	if (prev & bit)
-		return xc_evtchn_notify(ctrl->event, ctrl->event_port);
+		return xenevtchn_notify(ctrl->event, ctrl->event_port);
 	else
 		return 0;
 }
@@ -194,10 +194,10 @@ int libxenvchan_buffer_space(struct libxenvchan *ctrl)
 
 int libxenvchan_wait(struct libxenvchan *ctrl)
 {
-	int ret = xc_evtchn_pending(ctrl->event);
+	int ret = xenevtchn_pending(ctrl->event);
 	if (ret < 0)
 		return -1;
-	xc_evtchn_unmask(ctrl->event, ret);
+	xenevtchn_unmask(ctrl->event, ret);
 	return 0;
 }
 
@@ -350,7 +350,7 @@ int libxenvchan_is_open(struct libxenvchan* ctrl)
 
 int libxenvchan_fd_for_select(struct libxenvchan *ctrl)
 {
-	return xc_evtchn_fd(ctrl->event);
+	return xenevtchn_fd(ctrl->event);
 }
 
 void libxenvchan_close(struct libxenvchan *ctrl)
@@ -372,8 +372,8 @@ void libxenvchan_close(struct libxenvchan *ctrl)
 	}
 	if (ctrl->event) {
 		if (ctrl->ring)
-			xc_evtchn_notify(ctrl->event, ctrl->event_port);
-		xc_evtchn_close(ctrl->event);
+			xenevtchn_notify(ctrl->event, ctrl->event_port);
+		xenevtchn_close(ctrl->event);
 	}
 	if (ctrl->is_server) {
 		if (ctrl->gntshr)
diff --git a/tools/libvchan/libxenvchan.h b/tools/libvchan/libxenvchan.h
index 0944a0e..1544378 100644
--- a/tools/libvchan/libxenvchan.h
+++ b/tools/libvchan/libxenvchan.h
@@ -44,6 +44,7 @@
 
 #include <xen/io/libxenvchan.h>
 #include <xen/sys/evtchn.h>
+#include <xenevtchn.h>
 #include <xenctrl.h>
 
 struct libxenvchan_ring {
@@ -71,7 +72,7 @@ struct libxenvchan {
 	/* Pointer to shared ring page */
 	struct vchan_interface *ring;
 	/* event channel interface */
-	xc_evtchn *event;
+	xenevtchn_handle *event;
 	uint32_t event_port;
 	/* informative flags: are we acting as server? */
 	int is_server:1;
diff --git a/tools/libxc/Makefile b/tools/libxc/Makefile
index 940708f..b8fc6a5 100644
--- a/tools/libxc/Makefile
+++ b/tools/libxc/Makefile
@@ -48,6 +48,7 @@ CTRL_SRCS-$(CONFIG_SunOS) += xc_solaris.c
 CTRL_SRCS-$(CONFIG_NetBSD) += xc_netbsd.c
 CTRL_SRCS-$(CONFIG_NetBSDRump) += xc_netbsd.c
 CTRL_SRCS-$(CONFIG_MiniOS) += xc_minios.c
+CTRL_SRCS-y       += xc_evtchn_compat.c
 
 GUEST_SRCS-y :=
 GUEST_SRCS-y += xg_private.c xc_suspend.c
@@ -111,6 +112,7 @@ CFLAGS-$(CONFIG_Linux) += -D_GNU_SOURCE
 
 CFLAGS	+= $(PTHREAD_CFLAGS)
 CFLAGS	+= $(CFLAGS_libxentoollog)
+CFLAGS	+= $(CFLAGS_libxenevtchn)
 
 CTRL_LIB_OBJS := $(patsubst %.c,%.o,$(CTRL_SRCS-y))
 CTRL_PIC_OBJS := $(patsubst %.c,%.opic,$(CTRL_SRCS-y))
@@ -164,7 +166,7 @@ install: build
 	$(INSTALL_DATA) libxenctrl.a $(DESTDIR)$(libdir)
 	$(SYMLINK_SHLIB) libxenctrl.so.$(MAJOR).$(MINOR) $(DESTDIR)$(libdir)/libxenctrl.so.$(MAJOR)
 	$(SYMLINK_SHLIB) libxenctrl.so.$(MAJOR) $(DESTDIR)$(libdir)/libxenctrl.so
-	$(INSTALL_DATA) include/xenctrl.h include/xenctrlosdep.h $(DESTDIR)$(includedir)
+	$(INSTALL_DATA) include/xenctrl.h include/xenctrl_compat.h include/xenctrlosdep.h $(DESTDIR)$(includedir)
 	$(INSTALL_SHLIB) libxenguest.so.$(MAJOR).$(MINOR) $(DESTDIR)$(libdir)
 	$(INSTALL_DATA) libxenguest.a $(DESTDIR)$(libdir)
 	$(SYMLINK_SHLIB) libxenguest.so.$(MAJOR).$(MINOR) $(DESTDIR)$(libdir)/libxenguest.so.$(MAJOR)
@@ -207,7 +209,7 @@ libxenctrl.so.$(MAJOR): libxenctrl.so.$(MAJOR).$(MINOR)
 	$(SYMLINK_SHLIB) $< $@
 
 libxenctrl.so.$(MAJOR).$(MINOR): $(CTRL_PIC_OBJS)
-	$(CC) $(LDFLAGS) $(PTHREAD_LDFLAGS) -Wl,$(SONAME_LDFLAG) -Wl,libxenctrl.so.$(MAJOR) $(SHLIB_LDFLAGS) -o $@ $^ $(LDLIBS_libxentoollog) $(DLOPEN_LIBS) $(PTHREAD_LIBS) $(APPEND_LDFLAGS)
+	$(CC) $(LDFLAGS) $(PTHREAD_LDFLAGS) -Wl,$(SONAME_LDFLAG) -Wl,libxenctrl.so.$(MAJOR) $(SHLIB_LDFLAGS) -o $@ $^ $(LDLIBS_libxentoollog) $(LDLIBS_libxenevtchn) $(DLOPEN_LIBS) $(PTHREAD_LIBS) $(APPEND_LDFLAGS)
 
 # libxenguest
 
@@ -230,7 +232,7 @@ xc_dom_bzimageloader.opic: CFLAGS += $(call zlib-options,D)
 
 libxenguest.so.$(MAJOR).$(MINOR): COMPRESSION_LIBS = $(call zlib-options,l)
 libxenguest.so.$(MAJOR).$(MINOR): $(GUEST_PIC_OBJS) libxenctrl.so
-	$(CC) $(LDFLAGS) -Wl,$(SONAME_LDFLAG) -Wl,libxenguest.so.$(MAJOR) $(SHLIB_LDFLAGS) -o $@ $(GUEST_PIC_OBJS) $(COMPRESSION_LIBS) -lz $(LDLIBS_libxenctrl) $(PTHREAD_LIBS) $(APPEND_LDFLAGS)
+	$(CC) $(LDFLAGS) -Wl,$(SONAME_LDFLAG) -Wl,libxenguest.so.$(MAJOR) $(SHLIB_LDFLAGS) -o $@ $(GUEST_PIC_OBJS) $(COMPRESSION_LIBS) -lz $(LDLIBS_libxenevtchn) $(LDLIBS_libxenctrl) $(PTHREAD_LIBS) $(APPEND_LDFLAGS)
 
 xenctrl_osdep_ENOSYS.so: $(OSDEP_PIC_OBJS) libxenctrl.so
 	$(CC) $(LDFLAGS) $(SHLIB_LDFLAGS) -o $@ $(OSDEP_PIC_OBJS) $(LDLIBS_libxenctrl) $(APPEND_LDFLAGS)
diff --git a/tools/libxc/include/xenctrl.h b/tools/libxc/include/xenctrl.h
index 881dcd5..8f31c4d 100644
--- a/tools/libxc/include/xenctrl.h
+++ b/tools/libxc/include/xenctrl.h
@@ -117,7 +117,6 @@
  */
 
 typedef struct xc_interface_core xc_interface;
-typedef struct xenevtchn_handle xc_evtchn;
 typedef struct xc_interface_core xc_gnttab;
 typedef struct xc_interface_core xc_gntshr;
 
@@ -1085,7 +1084,6 @@ int xc_cpupool_movedomain(xc_interface *xch,
  */
 xc_cpumap_t xc_cpupool_freeinfo(xc_interface *xch);
 
-
 /*
  * EVENT CHANNEL FUNCTIONS
  *
@@ -1120,101 +1118,7 @@ int xc_evtchn_reset(xc_interface *xch,
 typedef struct evtchn_status xc_evtchn_status_t;
 int xc_evtchn_status(xc_interface *xch, xc_evtchn_status_t *status);
 
-/*
- * Return a handle to the event channel driver, or NULL on failure, in
- * which case errno will be set appropriately.
- *
- * Note:
- * After fork a child process must not use any opened xc evtchn
- * handle inherited from their parent. They must open a new handle if
- * they want to interact with xc.
- *
- * Before Xen pre-4.1 this function would sometimes report errors with perror.
- */
-xc_evtchn *xc_evtchn_open(xentoollog_logger *logger,
-                             unsigned open_flags);
 
-/*
- * Close a handle previously allocated with xc_evtchn_open().
- */
-int xc_evtchn_close(xc_evtchn *xce);
-
-/*
- * Return an fd that can be select()ed on.
- *
- * Note that due to bugs, setting this fd to non blocking may not
- * work: you would hope that it would result in xc_evtchn_pending
- * failing with EWOULDBLOCK if there are no events signaled, but in
- * fact it may block.  (Bug is present in at least Linux 3.12, and
- * perhaps on other platforms or later version.)
- *
- * To be safe, you must use poll() or select() before each call to
- * xc_evtchn_pending.  If you have multiple threads (or processes)
- * sharing a single xce handle this will not work, and there is no
- * straightforward workaround.  Please design your program some other
- * way.
- */
-int xc_evtchn_fd(xc_evtchn *xce);
-
-/*
- * Notify the given event channel. Returns -1 on failure, in which case
- * errno will be set appropriately.
- */
-int xc_evtchn_notify(xc_evtchn *xce, evtchn_port_t port);
-
-/*
- * Returns a new event port awaiting interdomain connection from the given
- * domain ID, or -1 on failure, in which case errno will be set appropriately.
- */
-evtchn_port_or_error_t
-xc_evtchn_bind_unbound_port(xc_evtchn *xce, int domid);
-
-/*
- * Returns a new event port bound to the remote port for the given domain ID,
- * or -1 on failure, in which case errno will be set appropriately.
- */
-evtchn_port_or_error_t
-xc_evtchn_bind_interdomain(xc_evtchn *xce, int domid,
-                           evtchn_port_t remote_port);
-
-/*
- * Bind an event channel to the given VIRQ. Returns the event channel bound to
- * the VIRQ, or -1 on failure, in which case errno will be set appropriately.
- */
-evtchn_port_or_error_t
-xc_evtchn_bind_virq(xc_evtchn *xce, unsigned int virq);
-
-/*
- * Unbind the given event channel. Returns -1 on failure, in which case errno
- * will be set appropriately.
- */
-int xc_evtchn_unbind(xc_evtchn *xce, evtchn_port_t port);
-
-/*
- * Return the next event channel to become pending, or -1 on failure, in which
- * case errno will be set appropriately.
- *
- * At the hypervisor level the event channel will have been masked,
- * and then cleared, by the underlying machinery (evtchn kernel
- * driver, or equivalent).  So if the event channel is signaled again
- * after it is returned here, it will be queued up, and delivered
- * again after you unmask it.  (See the documentation in the Xen
- * public header event_channel.h.)
- *
- * On receiving the notification from xc_evtchn_pending, you should
- * normally: check (by other means) what work needs doing; do the
- * necessary work (if any); unmask the event channel with
- * xc_evtchn_unmask (if you want to receive any further
- * notifications).
- */
-evtchn_port_or_error_t
-xc_evtchn_pending(xc_evtchn *xce);
-
-/*
- * Unmask the given event channel. Returns -1 on failure, in which case errno
- * will be set appropriately.
- */
-int xc_evtchn_unmask(xc_evtchn *xce, evtchn_port_t port);
 
 int xc_physdev_pci_access_modify(xc_interface *xch,
                                  uint32_t domid,
@@ -2851,6 +2755,9 @@ int xc_psr_cat_get_l3_info(xc_interface *xch, uint32_t socket,
                            bool *cdp_enabled);
 #endif
 
+/* Compat shims */
+#include "xenctrl_compat.h"
+
 #endif /* XENCTRL_H */
 
 /*
diff --git a/tools/libxc/include/xenctrl_compat.h b/tools/libxc/include/xenctrl_compat.h
new file mode 100644
index 0000000..48daeb2
--- /dev/null
+++ b/tools/libxc/include/xenctrl_compat.h
@@ -0,0 +1,48 @@
+/*
+ * Compat shims for use of 3rd party consumers of libxenctrl
+ * functionality which has been split into separate libraries.
+ *
+ * New code should use the separate libraries.
+ *
+ * Each interface must be opted-into separately by defining:
+ *
+ * XC_WANT_COMPAT_EVTCHN_API
+ *  - Functions relating to /dev/xen/evtchn
+ */
+#ifndef XENCTRL_COMPAT_H
+#define XENCTRL_COMPAT_H
+
+#ifdef XC_WANT_COMPAT_EVTCHN_API
+
+typedef struct xenevtchn_handle xc_evtchn;
+
+xc_evtchn *xc_evtchn_open(xentoollog_logger *logger,
+                             unsigned open_flags);
+int xc_evtchn_close(xc_evtchn *xce);
+int xc_evtchn_fd(xc_evtchn *xce);
+int xc_evtchn_notify(xc_evtchn *xce, evtchn_port_t port);
+evtchn_port_or_error_t
+xc_evtchn_bind_unbound_port(xc_evtchn *xce, int domid);
+evtchn_port_or_error_t
+xc_evtchn_bind_interdomain(xc_evtchn *xce, int domid,
+                           evtchn_port_t remote_port);
+evtchn_port_or_error_t
+xc_evtchn_bind_virq(xc_evtchn *xce, unsigned int virq);
+int xc_evtchn_unbind(xc_evtchn *xce, evtchn_port_t port);
+evtchn_port_or_error_t
+xc_evtchn_pending(xc_evtchn *xce);
+int xc_evtchn_unmask(xc_evtchn *xce, evtchn_port_t port);
+
+#endif /* XC_WANT_COMPAT_EVTCHN_API */
+
+#endif
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/libxc/include/xenguest.h b/tools/libxc/include/xenguest.h
index 8f918b1..050a537 100644
--- a/tools/libxc/include/xenguest.h
+++ b/tools/libxc/include/xenguest.h
@@ -34,6 +34,12 @@
 #define X86_64_B_SIZE   64 
 #define X86_32_B_SIZE   32
 
+/*
+ * User not using xc_suspend_* / xc_await_suspent may not want to
+ * include the full libxenevtchn API here.
+ */
+typedef struct xenevtchn_handle xenevtchn_handle;
+
 /* callbacks provided by xc_domain_save */
 struct save_callbacks {
     /* Called after expiration of checkpoint interval,
@@ -161,18 +167,18 @@ struct xc_hvm_firmware_module {
  * Sets *lockfd to -1.
  * Has deallocated everything even on error.
  */
-int xc_suspend_evtchn_release(xc_interface *xch, xc_evtchn *xce, int domid, int suspend_evtchn, int *lockfd);
+int xc_suspend_evtchn_release(xc_interface *xch, xenevtchn_handle *xce, int domid, int suspend_evtchn, int *lockfd);
 
 /**
  * This function eats the initial notification.
  * xce must not be used for anything else
  * See xc_suspend_evtchn_init_sane re lockfd.
  */
-int xc_suspend_evtchn_init_exclusive(xc_interface *xch, xc_evtchn *xce,
+int xc_suspend_evtchn_init_exclusive(xc_interface *xch, xenevtchn_handle *xce,
                                      int domid, int port, int *lockfd);
 
 /* xce must not be used for anything else */
-int xc_await_suspend(xc_interface *xch, xc_evtchn *xce, int suspend_evtchn);
+int xc_await_suspend(xc_interface *xch, xenevtchn_handle *xce, int suspend_evtchn);
 
 /**
  * The port will be signaled immediately after this call
@@ -181,7 +187,7 @@ int xc_await_suspend(xc_interface *xch, xc_evtchn *xce, int suspend_evtchn);
  * and fed to xc_suspend_evtchn_release.  (On error *lockfd is
  * undefined and xc_suspend_evtchn_release is not allowed.)
  */
-int xc_suspend_evtchn_init_sane(xc_interface *xch, xc_evtchn *xce,
+int xc_suspend_evtchn_init_sane(xc_interface *xch, xenevtchn_handle *xce,
                                 int domid, int port, int *lockfd);
 
 int xc_mark_page_online(xc_interface *xch, unsigned long start,
diff --git a/tools/libxc/xc_evtchn_compat.c b/tools/libxc/xc_evtchn_compat.c
new file mode 100644
index 0000000..5d3e4ba
--- /dev/null
+++ b/tools/libxc/xc_evtchn_compat.c
@@ -0,0 +1,75 @@
+/*
+ * Compat shims for use of 3rd party consumers of libxenctrl xc_evtchn
+ * functionality which has been split into separate libraries.
+ */
+
+#include <xenevtchn.h>
+
+#define XC_WANT_COMPAT_EVTCHN_API
+#include "xenctrl.h"
+
+xc_evtchn *xc_evtchn_open(xentoollog_logger *logger,
+                          unsigned open_flags)
+{
+    return xenevtchn_open(logger, open_flags);
+}
+
+int xc_evtchn_close(xc_evtchn *xce)
+{
+    return xenevtchn_close(xce);
+}
+
+int xc_evtchn_fd(xc_evtchn *xce)
+{
+    return xenevtchn_fd(xce);
+}
+
+int xc_evtchn_notify(xc_evtchn *xce, evtchn_port_t port)
+{
+    return xenevtchn_notify(xce, port);
+}
+
+evtchn_port_or_error_t
+xc_evtchn_bind_unbound_port(xc_evtchn *xce, int domid)
+{
+    return xenevtchn_bind_unbound_port(xce, domid);
+}
+
+evtchn_port_or_error_t
+xc_evtchn_bind_interdomain(xc_evtchn *xce, int domid,
+                           evtchn_port_t remote_port)
+{
+    return xenevtchn_bind_interdomain(xce, domid, remote_port);
+}
+
+evtchn_port_or_error_t
+xc_evtchn_bind_virq(xc_evtchn *xce, unsigned int virq)
+{
+    return xenevtchn_bind_virq(xce, virq);
+}
+
+int xc_evtchn_unbind(xc_evtchn *xce, evtchn_port_t port)
+{
+    return xenevtchn_unbind(xce, port);
+}
+
+evtchn_port_or_error_t
+xc_evtchn_pending(xc_evtchn *xce)
+{
+    return xenevtchn_pending(xce);
+}
+
+int xc_evtchn_unmask(xc_evtchn *xce, evtchn_port_t port)
+{
+    return xenevtchn_unmask(xce, port);
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/libxc/xc_freebsd_osdep.c b/tools/libxc/xc_freebsd_osdep.c
index 4323e16..339997c 100644
--- a/tools/libxc/xc_freebsd_osdep.c
+++ b/tools/libxc/xc_freebsd_osdep.c
@@ -31,13 +31,11 @@
 #include <sys/ioctl.h>
 
 #include <xen/memory.h>
-#include <xen/sys/evtchn.h>
 
 #include "xenctrl.h"
 #include "xenctrlosdep.h"
 
 #define PRIVCMD_DEV     "/dev/xen/privcmd"
-#define EVTCHN_DEV      "/dev/xen/evtchn"
 
 #define PERROR(_m, _a...) xc_osdep_log(xch,XTL_ERROR,XC_INTERNAL_ERROR,_m \
                   " (%d = %s)", ## _a , errno, xc_strerror(xch, errno))
@@ -251,105 +249,6 @@ static struct xc_osdep_ops freebsd_privcmd_ops = {
     },
 };
 
-/*-------------------------- Evtchn device interface -------------------------*/
-int osdep_evtchn_open(xc_evtchn *xce)
-{
-    int fd = open(EVTCHN_DEV, O_RDWR);
-    if ( fd == -1 )
-        return -1;
-    xce->fd = fd;
-    return 0;
-}
-
-int osdep_evtchn_close(xc_evtchn *xce)
-{
-    if ( xce->fd == -1 )
-        return 0;
-
-    return close(xce->fd);
-}
-
-int xc_evtchn_fd(xc_evtchn *xce)
-{
-    return xce->fd;
-}
-
-/*------------------------------ Evtchn interface ----------------------------*/
-int xc_evtchn_notify(xc_evtchn *xce, evtchn_port_t port)
-{
-    int fd = xce->fd;
-    struct ioctl_evtchn_notify notify;
-
-    notify.port = port;
-
-    return ioctl(fd, IOCTL_EVTCHN_NOTIFY, &notify);
-}
-
-evtchn_port_or_error_t xc_evtchn_bind_unbound_port(xc_evtchn *xce, int domid)
-{
-    int ret, fd = xce->fd;
-    struct ioctl_evtchn_bind_unbound_port bind;
-
-    bind.remote_domain = domid;
-
-    ret = ioctl(fd, IOCTL_EVTCHN_BIND_UNBOUND_PORT, &bind);
-    return ( ret == 0 ) ? bind.port : ret;
-}
-
-evtchn_port_or_error_t
-xc_evtchn_bind_interdomain(xc_evtchn *xce, int domid, evtchn_port_t remote_port)
-{
-    int ret, fd = xce->fd;
-    struct ioctl_evtchn_bind_interdomain bind;
-
-    bind.remote_domain = domid;
-    bind.remote_port = remote_port;
-
-    ret = ioctl(fd, IOCTL_EVTCHN_BIND_INTERDOMAIN, &bind);
-    return ( ret == 0 ) ? bind.port : ret;
-}
-
-evtchn_port_or_error_t xc_evtchn_bind_virq(xc_evtchn *xce, unsigned int virq)
-{
-    int ret, fd = xce->fd;
-    struct ioctl_evtchn_bind_virq bind;
-
-    bind.virq = virq;
-
-    ret = ioctl(fd, IOCTL_EVTCHN_BIND_VIRQ, &bind);
-    return ( ret == 0 ) ? bind.port : ret;
-}
-
-int xc_evtchn_unbind(xc_evtchn *xce, evtchn_port_t port)
-{
-    int fd = xce->fd;
-    struct ioctl_evtchn_unbind unbind;
-
-    unbind.port = port;
-
-    return ioctl(fd, IOCTL_EVTCHN_UNBIND, &unbind);
-}
-
-evtchn_port_or_error_t xc_evtchn_pending(xc_evtchn *xce)
-{
-    int fd = xce->fd;
-    evtchn_port_t port;
-
-    if ( read(fd, &port, sizeof(port)) != sizeof(port) )
-        return -1;
-
-    return port;
-}
-
-int xc_evtchn_unmask(xc_evtchn *xce, evtchn_port_t port)
-{
-    int fd = xce->fd;
-
-    if ( write(fd, &port, sizeof(port)) != sizeof(port) )
-        return -1;
-    return 0;
-}
-
 /*---------------------------- FreeBSD interface -----------------------------*/
 static struct xc_osdep_ops *
 freebsd_osdep_init(xc_interface *xch, enum xc_osdep_type type)
diff --git a/tools/libxc/xc_linux_osdep.c b/tools/libxc/xc_linux_osdep.c
index 90544fb..65299d0 100644
--- a/tools/libxc/xc_linux_osdep.c
+++ b/tools/libxc/xc_linux_osdep.c
@@ -31,7 +31,6 @@
 #include <sys/ioctl.h>
 
 #include <xen/memory.h>
-#include <xen/sys/evtchn.h>
 #include <xen/sys/gntdev.h>
 #include <xen/sys/gntalloc.h>
 
@@ -461,100 +460,6 @@ static struct xc_osdep_ops linux_privcmd_ops = {
 
 #define DEVXEN "/dev/xen/"
 
-int osdep_evtchn_open(xc_evtchn *xce)
-{
-    int fd = open(DEVXEN "evtchn", O_RDWR);
-    if ( fd == -1 )
-        return -1;
-    xce->fd = fd;
-    return 0;
-}
-
-int osdep_evtchn_close(xc_evtchn *xce)
-{
-    if ( xce->fd == -1 )
-        return 0;
-
-    return close(xce->fd);
-}
-
-int xc_evtchn_fd(xc_evtchn *xce)
-{
-    return xce->fd;
-}
-
-int xc_evtchn_notify(xc_evtchn *xce, evtchn_port_t port)
-{
-    int fd = xce->fd;
-    struct ioctl_evtchn_notify notify;
-
-    notify.port = port;
-
-    return ioctl(fd, IOCTL_EVTCHN_NOTIFY, &notify);
-}
-
-evtchn_port_or_error_t xc_evtchn_bind_unbound_port(xc_evtchn *xce, int domid)
-{
-    int fd = xce->fd;
-    struct ioctl_evtchn_bind_unbound_port bind;
-
-    bind.remote_domain = domid;
-
-    return ioctl(fd, IOCTL_EVTCHN_BIND_UNBOUND_PORT, &bind);
-}
-
-evtchn_port_or_error_t xc_evtchn_bind_interdomain(xc_evtchn *xce, int domid,
-                                                  evtchn_port_t remote_port)
-{
-    int fd = xce->fd;
-    struct ioctl_evtchn_bind_interdomain bind;
-
-    bind.remote_domain = domid;
-    bind.remote_port = remote_port;
-
-    return ioctl(fd, IOCTL_EVTCHN_BIND_INTERDOMAIN, &bind);
-}
-
-evtchn_port_or_error_t xc_evtchn_bind_virq(xc_evtchn *xce, unsigned int virq)
-{
-    int fd = xce->fd;
-    struct ioctl_evtchn_bind_virq bind;
-
-    bind.virq = virq;
-
-    return ioctl(fd, IOCTL_EVTCHN_BIND_VIRQ, &bind);
-}
-
-int xc_evtchn_unbind(xc_evtchn *xce, evtchn_port_t port)
-{
-    int fd = xce->fd;
-    struct ioctl_evtchn_unbind unbind;
-
-    unbind.port = port;
-
-    return ioctl(fd, IOCTL_EVTCHN_UNBIND, &unbind);
-}
-
-evtchn_port_or_error_t xc_evtchn_pending(xc_evtchn *xce)
-{
-    int fd = xce->fd;
-    evtchn_port_t port;
-
-    if ( read(fd, &port, sizeof(port)) != sizeof(port) )
-        return -1;
-
-    return port;
-}
-
-int xc_evtchn_unmask(xc_evtchn *xce, evtchn_port_t port)
-{
-    int fd = xce->fd;
-
-    if ( write(fd, &port, sizeof(port)) != sizeof(port) )
-        return -1;
-    return 0;
-}
-
 static xc_osdep_handle linux_gnttab_open(xc_gnttab *xcg)
 {
     int fd = open(DEVXEN "gntdev", O_RDWR);
diff --git a/tools/libxc/xc_minios.c b/tools/libxc/xc_minios.c
index 4ace1b5..db7b344 100644
--- a/tools/libxc/xc_minios.c
+++ b/tools/libxc/xc_minios.c
@@ -19,14 +19,11 @@
  */
 
 #undef NDEBUG
-#include "xen-external/bsd-sys-queue.h"
 #include <mini-os/types.h>
 #include <mini-os/os.h>
 #include <mini-os/mm.h>
 #include <mini-os/lib.h>
 #include <mini-os/gntmap.h>
-#include <mini-os/events.h>
-#include <mini-os/wait.h>
 #include <sys/mman.h>
 
 #include <xen/memory.h>
@@ -41,13 +38,9 @@
 #include "xc_private.h"
 
 void minios_interface_close_fd(int fd);
-void minios_evtchn_close_fd(int fd);
 void minios_gnttab_close_fd(int fd);
 
 extern void minios_interface_close_fd(int fd);
-extern void minios_evtchn_close_fd(int fd);
-
-extern struct wait_queue_head event_queue;
 
 static xc_osdep_handle minios_privcmd_open(xc_interface *xch)
 {
@@ -197,220 +190,6 @@ static struct xc_osdep_ops minios_privcmd_ops = {
     },
 };
 
-
-/* XXX Note: This is not threadsafe */
-static struct evtchn_port_info* port_alloc(int fd) {
-    struct evtchn_port_info *port_info;
-    port_info = malloc(sizeof(struct evtchn_port_info));
-    if (port_info == NULL)
-        return NULL;
-    port_info->pending = 0;
-    port_info->port = -1;
-    port_info->bound = 0;
-
-    LIST_INSERT_HEAD(&files[fd].evtchn.ports, port_info, list);
-    return port_info;
-}
-
-static void port_dealloc(struct evtchn_port_info *port_info) {
-    if (port_info->bound)
-        unbind_evtchn(port_info->port);
-    LIST_REMOVE(port_info, list);
-    free(port_info);
-}
-
-int osdep_evtchn_open(xc_evtchn *xce)
-{
-    int fd = alloc_fd(FTYPE_EVTCHN);
-    if ( fd == -1 )
-        return -1;
-    LIST_INIT(&files[fd].evtchn.ports);
-    xce->fd = fd;
-    printf("evtchn_open() -> %d\n", fd);
-    return 0;
-}
-
-int osdep_evtchn_close(xc_evtchn *xce, xc_osdep_handle h)
-{
-    if ( xce->fd == -1 )
-        return 0;
-
-    return close(xce->fd);
-}
-
-void minios_evtchn_close_fd(int fd)
-{
-    struct evtchn_port_info *port_info, *tmp;
-    LIST_FOREACH_SAFE(port_info, &files[fd].evtchn.ports, list, tmp)
-        port_dealloc(port_info);
-
-    files[fd].type = FTYPE_NONE;
-}
-
-int xc_evtchn_fd(xc_evtchn *xce)
-{
-    return xce->fd;
-}
-
-int xc_evtchn_notify(xc_evtchn *xce, evtchn_port_t port)
-{
-    int ret;
-
-    ret = notify_remote_via_evtchn(port);
-
-    if (ret < 0) {
-	errno = -ret;
-	ret = -1;
-    }
-    return ret;
-}
-
-static void evtchn_handler(evtchn_port_t port, struct pt_regs *regs, void *data)
-{
-    int fd = (int)(intptr_t)data;
-    struct evtchn_port_info *port_info;
-    assert(files[fd].type == FTYPE_EVTCHN);
-    mask_evtchn(port);
-    LIST_FOREACH(port_info, &files[fd].evtchn.ports, list) {
-        if (port_info->port == port)
-            goto found;
-    }
-    printk("Unknown port for handle %d\n", fd);
-    return;
-
- found:
-    port_info->pending = 1;
-    files[fd].read = 1;
-    wake_up(&event_queue);
-}
-
-evtchn_port_or_error_t xc_evtchn_bind_unbound_port(xc_evtchn *xce, int domid)
-{
-    int fd = xce->fd;
-    struct evtchn_port_info *port_info;
-    int ret;
-    evtchn_port_t port;
-
-    assert(get_current() == main_thread);
-    port_info = port_alloc(fd);
-    if (port_info == NULL)
-	return -1;
-
-    printf("xc_evtchn_bind_unbound_port(%d)", domid);
-    ret = evtchn_alloc_unbound(domid, evtchn_handler, (void*)(intptr_t)fd, &port);
-    printf(" = %d\n", ret);
-
-    if (ret < 0) {
-	port_dealloc(port_info);
-	errno = -ret;
-	return -1;
-    }
-    port_info->bound = 1;
-    port_info->port = port;
-    unmask_evtchn(port);
-    return port;
-}
-
-evtchn_port_or_error_t xc_evtchn_bind_interdomain(xc_evtchn *xce, int domid,
-                                                  evtchn_port_t remote_port)
-{
-    int fd = xce->fd;
-    struct evtchn_port_info *port_info;
-    evtchn_port_t local_port;
-    int ret;
-
-    assert(get_current() == main_thread);
-    port_info = port_alloc(fd);
-    if (port_info == NULL)
-	return -1;
-
-    printf("xc_evtchn_bind_interdomain(%d, %"PRId32")", domid, remote_port);
-    ret = evtchn_bind_interdomain(domid, remote_port, evtchn_handler, (void*)(intptr_t)fd, &local_port);
-    printf(" = %d\n", ret);
-
-    if (ret < 0) {
-	port_dealloc(port_info);
-	errno = -ret;
-	return -1;
-    }
-    port_info->bound = 1;
-    port_info->port = local_port;
-    unmask_evtchn(local_port);
-    return local_port;
-}
-
-int xc_evtchn_unbind(xc_evtchn *xce, evtchn_port_t port)
-{
-    int fd = xce->fd;
-    struct evtchn_port_info *port_info;
-
-    LIST_FOREACH(port_info, &files[fd].evtchn.ports, list) {
-        if (port_info->port == port) {
-            port_dealloc(port_info);
-            return 0;
-        }
-    }
-    printf("Warning: couldn't find port %"PRId32" for xc handle %x\n", port, fd);
-    errno = EINVAL;
-    return -1;
-}
-
-evtchn_port_or_error_t xc_evtchn_bind_virq(xc_evtchn *xce, unsigned int virq)
-{
-    int fd = xce->fd;
-    struct evtchn_port_info *port_info;
-    evtchn_port_t port;
-
-    assert(get_current() == main_thread);
-    port_info = port_alloc(fd);
-    if (port_info == NULL)
-	return -1;
-
-    printf("xc_evtchn_bind_virq(%d)", virq);
-    port = bind_virq(virq, evtchn_handler, (void*)(intptr_t)fd);
-
-    if (port < 0) {
-	port_dealloc(port_info);
-	errno = -port;
-	return -1;
-    }
-    port_info->bound = 1;
-    port_info->port = port;
-    unmask_evtchn(port);
-    return port;
-}
-
-evtchn_port_or_error_t xc_evtchn_pending(xc_evtchn *xce)
-{
-    int fd = xce->fd;
-    struct evtchn_port_info *port_info;
-    unsigned long flags;
-    evtchn_port_t ret = -1;
-
-    local_irq_save(flags);
-    files[fd].read = 0;
-
-    LIST_FOREACH(port_info, &files[fd].evtchn.ports, list) {
-        if (port_info->port != -1 && port_info->pending) {
-            if (ret == -1) {
-                ret = port_info->port;
-                port_info->pending = 0;
-            } else {
-                files[fd].read = 1;
-                break;
-            }
-        }
-    }
-    local_irq_restore(flags);
-    return ret;
-}
-
-int xc_evtchn_unmask(xc_evtchn *xce, evtchn_port_t port)
-{
-    unmask_evtchn(port);
-    return 0;
-}
-
 /* Optionally flush file to disk and discard page cache */
 void discard_file_cache(xc_interface *xch, int fd, int flush)
 {
diff --git a/tools/libxc/xc_netbsd.c b/tools/libxc/xc_netbsd.c
index b1b828f..fe4f0a1 100644
--- a/tools/libxc/xc_netbsd.c
+++ b/tools/libxc/xc_netbsd.c
@@ -19,7 +19,6 @@
 
 #include "xc_private.h"
 
-#include <xen/sys/evtchn.h>
 #include <unistd.h>
 #include <fcntl.h>
 #include <malloc.h>
@@ -223,114 +222,6 @@ static struct xc_osdep_ops netbsd_privcmd_ops = {
     },
 };
 
-#define EVTCHN_DEV_NAME  "/dev/xenevt"
-
-int osdep_evtchn_open(xc_evtchn *xce)
-{
-    int fd = open(EVTCHN_DEV_NAME, O_NONBLOCK|O_RDWR);
-    if ( fd == -1 )
-        return -1;
-    xce->fd = fd;
-    return 0;
-}
-
-int osdep_evtchn_close(xc_evtchn *xce, xc_osdep_handle h)
-{
-    if ( xce->fd == -1 )
-        return 0;
-
-    return close(xce->fd);
-}
-
-int xc_evtchn_fd(xc_evtchn *xce)
-{
-    return xce->fd;
-}
-
-int xc_evtchn_notify(xc_evtchn *xce, evtchn_port_t port)
-{
-    int fd = xce->fd;
-    struct ioctl_evtchn_notify notify;
-
-    notify.port = port;
-
-    return ioctl(fd, IOCTL_EVTCHN_NOTIFY, &notify);
-}
-
-evtchn_port_or_error_t xc_evtchn_bind_unbound_port(xc_evtchn * xce, int domid)
-{
-    int fd = xce->fd;
-    struct ioctl_evtchn_bind_unbound_port bind;
-    int ret;
-
-    bind.remote_domain = domid;
-
-    ret = ioctl(fd, IOCTL_EVTCHN_BIND_UNBOUND_PORT, &bind);
-    if (ret == 0)
-	return bind.port;
-    else
-	return -1;
-}
-
-evtchn_port_or_error_t xc_evtchn_bind_interdomain(xc_evtchn *xce, int domid,
-                                                  evtchn_port_t remote_port)
-{
-    int fd = xce->fd;
-    struct ioctl_evtchn_bind_interdomain bind;
-    int ret;
-
-    bind.remote_domain = domid;
-    bind.remote_port = remote_port;
-
-    ret = ioctl(fd, IOCTL_EVTCHN_BIND_INTERDOMAIN, &bind);
-    if (ret == 0)
-	return bind.port;
-    else
-	return -1;
-}
-
-int xc_evtchn_unbind(xc_evtchn *xce, evtchn_port_t port)
-{
-    int fd = xce->fd;
-    struct ioctl_evtchn_unbind unbind;
-
-    unbind.port = port;
-
-    return ioctl(fd, IOCTL_EVTCHN_UNBIND, &unbind);
-}
-
-evtchn_port_or_error_t xc_evtchn_bind_virq(xc_evtchn *xce, unsigned int virq)
-{
-    int fd = xce->fd;
-    struct ioctl_evtchn_bind_virq bind;
-    int err;
-
-    bind.virq = virq;
-
-    err = ioctl(fd, IOCTL_EVTCHN_BIND_VIRQ, &bind);
-    if (err)
-	return -1;
-    else
-	return bind.port;
-}
-
-evtchn_port_or_error_t xc_evtchn_pending(xc_evtchn *xce)
-{
-    int fd = xce->fd;
-    evtchn_port_t port;
-
-    if ( read_exact(fd, (char *)&port, sizeof(port)) == -1 )
-        return -1;
-
-    return port;
-}
-
-int xc_evtchn_unmask(xc_evtchn *xce, evtchn_port_t port)
-{
-    int fd = xce->fd;
-    return write_exact(fd, (char *)&port, sizeof(port));
-}
-
 /* Optionally flush file to disk and discard page cache */
 void discard_file_cache(xc_interface *xch, int fd, int flush) 
 {
diff --git a/tools/libxc/xc_private.c b/tools/libxc/xc_private.c
index cb79f22..56d54b6 100644
--- a/tools/libxc/xc_private.c
+++ b/tools/libxc/xc_private.c
@@ -251,46 +251,6 @@ int do_xen_hypercall(xc_interface *xch, privcmd_hypercall_t *hypercall)
     return xch->ops->u.privcmd.hypercall(xch, xch->ops_handle, hypercall);
 }
 
-xc_evtchn *xc_evtchn_open(xentoollog_logger *logger, unsigned open_flags)
-{
-    xc_evtchn *xce = malloc(sizeof(*xce));
-    int rc;
-
-    if (!xce) return NULL;
-
-    xce->fd = -1;
-    xce->logger = logger;
-    xce->logger_tofree  = NULL;
-
-    if (!xce->logger) {
-        xce->logger = xce->logger_tofree =
-            (xentoollog_logger*)
-            xtl_createlogger_stdiostream(stderr, XTL_PROGRESS, 0);
-        if (!xce->logger) goto err;
-    }
-
-    rc = osdep_evtchn_open(xce);
-    if ( rc  < 0 ) goto err;
-
-    return xce;
-
-err:
-    osdep_evtchn_close(xce);
-    xtl_logger_destroy(xce->logger_tofree);
-    free(xce);
-    return NULL;
-}
-
-int xc_evtchn_close(xc_evtchn *xce)
-{
-    int rc;
-
-    rc = osdep_evtchn_close(xce);
-    xtl_logger_destroy(xce->logger_tofree);
-    free(xce);
-    return rc;
-}
-
 xc_gnttab *xc_gnttab_open(xentoollog_logger *logger,
                              unsigned open_flags)
 {
diff --git a/tools/libxc/xc_private.h b/tools/libxc/xc_private.h
index f4d155a..a32accb 100644
--- a/tools/libxc/xc_private.h
+++ b/tools/libxc/xc_private.h
@@ -123,13 +123,6 @@ struct xc_interface_core {
     xc_osdep_handle  ops_handle; /* opaque data for xc_osdep_ops */
 };
 
-struct xenevtchn_handle {
-    xentoollog_logger *logger, *logger_tofree;
-    int fd;
-};
-int osdep_evtchn_open(xc_evtchn *xce);
-int osdep_evtchn_close(xc_evtchn *xce);
-
 void xc_report_error(xc_interface *xch, int code, const char *fmt, ...)
     __attribute__((format(printf,3,4)));
 void xc_reportv(xc_interface *xch, xentoollog_logger *lg, xentoollog_level,
diff --git a/tools/libxc/xc_solaris.c b/tools/libxc/xc_solaris.c
index 088228a..ed7987c 100644
--- a/tools/libxc/xc_solaris.c
+++ b/tools/libxc/xc_solaris.c
@@ -20,7 +20,6 @@
 #include "xc_private.h"
 
 #include <xen/memory.h>
-#include <xen/sys/evtchn.h>
 #include <unistd.h>
 #include <fcntl.h>
 #include <malloc.h>
@@ -194,102 +193,6 @@ static struct xc_osdep_ops solaris_privcmd_ops = {
     },
 };
 
-int osdep_evtchn_open(xc_evtchn *xce)
-{
-    int fd;
-
-    if ( (fd = open("/dev/xen/evtchn", O_RDWR)) == -1 )
-    {
-        PERROR("Could not open event channel interface");
-        return -1;
-    }
-
-    xce->fd = fd;
-    return 0;
-}
-
-int osdep_evtchn_close(xc_evtchn *xce)
-{
-    if ( xce->fd == -1 )
-        return 0;
-
-    return close(xce->fd);
-}
-
-int xc_evtchn_fd(xc_evtchn *xce)
-{
-    return xce->fd;
-}
-
-int xc_evtchn_notify(xc_evtchn *xce, evtchn_port_t port)
-{
-    int fd = xce->fd;
-    struct ioctl_evtchn_notify notify;
-
-    notify.port = port;
-
-    return ioctl(fd, IOCTL_EVTCHN_NOTIFY, &notify);
-}
-
-evtchn_port_or_error_t xc_evtchn_bind_unbound_port(xc_evtchn *xce, int domid)
-{
-    int fd = xce->fd;
-    struct ioctl_evtchn_bind_unbound_port bind;
-
-    bind.remote_domain = domid;
-
-    return ioctl(fd, IOCTL_EVTCHN_BIND_UNBOUND_PORT, &bind);
-}
-
-evtchn_port_or_error_t xc_evtchn_bind_interdomain(xc_evtchn *xce, int domid,
-                                                  evtchn_port_t remote_port)
-{
-    int fd = xce->fd;
-    struct ioctl_evtchn_bind_interdomain bind;
-
-    bind.remote_domain = domid;
-    bind.remote_port = remote_port;
-
-    return ioctl(fd, IOCTL_EVTCHN_BIND_INTERDOMAIN, &bind);
-}
-
-evtchn_port_or_error_t xc_evtchn_bind_virq(xc_evtchn *xce, unsigned int virq)
-{
-    int fd = xce->fd;
-    struct ioctl_evtchn_bind_virq bind;
-
-    bind.virq = virq;
-
-    return ioctl(fd, IOCTL_EVTCHN_BIND_VIRQ, &bind);
-}
-
-int xc_evtchn_unbind(xc_evtchn *xce, evtchn_port_t port)
-{
-    int fd = xce->fd;
-    struct ioctl_evtchn_unbind unbind;
-
-    unbind.port = port;
-
-    return ioctl(fd, IOCTL_EVTCHN_UNBIND, &unbind);
-}
-
-evtchn_port_or_error_t xc_evtchn_pending(xc_evtchn *xce)
-{
-    int fd = xce->fd;
-    evtchn_port_t port;
-
-    if ( read_exact(fd, (char *)&port, sizeof(port)) == -1 )
-        return -1;
-
-    return port;
-}
-
-int xc_evtchn_unmask(xc_evtchn *xce, evtchn_port_t port)
-{
-    int fd = xce->fd;
-    return write_exact(fd, (char *)&port, sizeof(port));
-}
-
 /* Optionally flush file to disk and discard page cache */
 void discard_file_cache(xc_interface *xch, int fd, int flush) 
 {
diff --git a/tools/libxc/xc_suspend.c b/tools/libxc/xc_suspend.c
index bba36e7..8361c7b 100644
--- a/tools/libxc/xc_suspend.c
+++ b/tools/libxc/xc_suspend.c
@@ -16,6 +16,8 @@
 #include <unistd.h>
 #include <fcntl.h>
 
+#include <xenevtchn.h>
+
 #include "xc_private.h"
 #include "xenguest.h"
 
@@ -124,12 +126,12 @@ static int unlock_suspend_event(xc_interface *xch, int domid, int *lockfd)
     return -1;
 }
 
-int xc_await_suspend(xc_interface *xch, xc_evtchn *xce, int suspend_evtchn)
+int xc_await_suspend(xc_interface *xch, xenevtchn_handle *xce, int suspend_evtchn)
 {
     int rc;
 
     do {
-        rc = xc_evtchn_pending(xce);
+        rc = xenevtchn_pending(xce);
         if (rc < 0) {
             ERROR("error polling suspend notification channel: %d", rc);
             return -1;
@@ -137,7 +139,7 @@ int xc_await_suspend(xc_interface *xch, xc_evtchn *xce, int suspend_evtchn)
     } while (rc != suspend_evtchn);
 
     /* harmless for one-off suspend */
-    if (xc_evtchn_unmask(xce, suspend_evtchn) < 0)
+    if (xenevtchn_unmask(xce, suspend_evtchn) < 0)
         ERROR("failed to unmask suspend notification channel: %d", rc);
 
     return 0;
@@ -145,16 +147,16 @@ int xc_await_suspend(xc_interface *xch, xc_evtchn *xce, int suspend_evtchn)
 
 /* Internal callers are allowed to call this with suspend_evtchn<0
  * but *lockfd>0. */
-int xc_suspend_evtchn_release(xc_interface *xch, xc_evtchn *xce,
+int xc_suspend_evtchn_release(xc_interface *xch, xenevtchn_handle *xce,
                               int domid, int suspend_evtchn, int *lockfd)
 {
     if (suspend_evtchn >= 0)
-        xc_evtchn_unbind(xce, suspend_evtchn);
+        xenevtchn_unbind(xce, suspend_evtchn);
 
     return unlock_suspend_event(xch, domid, lockfd);
 }
 
-int xc_suspend_evtchn_init_sane(xc_interface *xch, xc_evtchn *xce,
+int xc_suspend_evtchn_init_sane(xc_interface *xch, xenevtchn_handle *xce,
                                 int domid, int port, int *lockfd)
 {
     int rc, suspend_evtchn = -1;
@@ -164,7 +166,7 @@ int xc_suspend_evtchn_init_sane(xc_interface *xch, xc_evtchn *xce,
         goto cleanup;
     }
 
-    suspend_evtchn = xc_evtchn_bind_interdomain(xce, domid, port);
+    suspend_evtchn = xenevtchn_bind_interdomain(xce, domid, port);
     if (suspend_evtchn < 0) {
         ERROR("failed to bind suspend event channel: %d", suspend_evtchn);
         goto cleanup;
@@ -184,7 +186,7 @@ cleanup:
     return -1;
 }
 
-int xc_suspend_evtchn_init_exclusive(xc_interface *xch, xc_evtchn *xce,
+int xc_suspend_evtchn_init_exclusive(xc_interface *xch, xenevtchn_handle *xce,
                                      int domid, int port, int *lockfd)
 {
     int suspend_evtchn;
diff --git a/tools/libxl/Makefile b/tools/libxl/Makefile
index 2abae0c..10b1741 100644
--- a/tools/libxl/Makefile
+++ b/tools/libxl/Makefile
@@ -20,12 +20,13 @@ LIBUUID_LIBS += -luuid
 endif
 
 LIBXL_LIBS =
-LIBXL_LIBS = $(LDLIBS_libxentoollog) $(LDLIBS_libxenctrl) $(LDLIBS_libxenguest) $(LDLIBS_libxenstore) $(LDLIBS_libblktapctl) $(PTYFUNCS_LIBS) $(LIBUUID_LIBS)
+LIBXL_LIBS = $(LDLIBS_libxentoollog) $(LDLIBS_libxenevtchn) $(LDLIBS_libxenctrl) $(LDLIBS_libxenguest) $(LDLIBS_libxenstore) $(LDLIBS_libblktapctl) $(PTYFUNCS_LIBS) $(LIBUUID_LIBS)
 ifeq ($(CONFIG_REMUS_NETBUF),y)
 LIBXL_LIBS += $(LIBNL3_LIBS)
 endif
 
 CFLAGS_LIBXL += $(CFLAGS_libxentoollog)
+CFLAGS_LIBXL += $(CFLAGS_libxenevtchn)
 CFLAGS_LIBXL += $(CFLAGS_libxenctrl)
 CFLAGS_LIBXL += $(CFLAGS_libxenguest)
 CFLAGS_LIBXL += $(CFLAGS_libxenstore)
@@ -159,7 +160,7 @@ $(XEN_INIT_DOM0_OBJS): CFLAGS += $(CFLAGS_libxenctrl)
 $(XEN_INIT_DOM0_OBJS): CFLAGS += $(CFLAGS_libxenstore)
 
 SAVE_HELPER_OBJS = libxl_save_helper.o _libxl_save_msgs_helper.o
-$(SAVE_HELPER_OBJS): CFLAGS += $(CFLAGS_libxenctrl)
+$(SAVE_HELPER_OBJS): CFLAGS += $(CFLAGS_libxenctrl) $(CFLAGS_libxenevtchn)
 
 PKG_CONFIG = xenlight.pc xlutil.pc
 
diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c
index bd3aac8..9f3153b 100644
--- a/tools/libxl/libxl.c
+++ b/tools/libxl/libxl.c
@@ -186,7 +186,7 @@ int libxl_ctx_free(libxl_ctx *ctx)
     if (ctx->xch) xc_interface_close(ctx->xch);
     libxl_version_info_dispose(&ctx->version_info);
     if (ctx->xsh) xs_daemon_close(ctx->xsh);
-    if (ctx->xce) xc_evtchn_close(ctx->xce);
+    if (ctx->xce) xenevtchn_close(ctx->xce);
 
     libxl__poller_put(ctx, ctx->poller_app);
     ctx->poller_app = NULL;
diff --git a/tools/libxl/libxl_dom_suspend.c b/tools/libxl/libxl_dom_suspend.c
index 4cc01ad..a2e8d86 100644
--- a/tools/libxl/libxl_dom_suspend.c
+++ b/tools/libxl/libxl_dom_suspend.c
@@ -107,9 +107,9 @@ static void domain_suspend_callback_common(libxl__egc *egc,
     if ((hvm_s_state == 0) && (dss->guest_evtchn.port >= 0)) {
         LOG(DEBUG, "issuing %s suspend request via event channel",
             dss->hvm ? "PVHVM" : "PV");
-        ret = xc_evtchn_notify(CTX->xce, dss->guest_evtchn.port);
+        ret = xenevtchn_notify(CTX->xce, dss->guest_evtchn.port);
         if (ret < 0) {
-            LOG(ERROR, "xc_evtchn_notify failed ret=%d", ret);
+            LOG(ERROR, "xenevtchn_notify failed ret=%d", ret);
             rc = ERROR_FAIL;
             goto err;
         }
diff --git a/tools/libxl/libxl_event.c b/tools/libxl/libxl_event.c
index 139e49a..8548365 100644
--- a/tools/libxl/libxl_event.c
+++ b/tools/libxl/libxl_event.c
@@ -739,7 +739,7 @@ static void evtchn_fd_callback(libxl__egc *egc, libxl__ev_fd *ev,
         /* OK, that's that workaround done.  We can actually check for
          * work for us to do: */
 
-        port = xc_evtchn_pending(CTX->xce);
+        port = xenevtchn_pending(CTX->xce);
         if (port < 0) {
             if (errno == EAGAIN)
                 break;
@@ -765,20 +765,20 @@ static void evtchn_fd_callback(libxl__egc *egc, libxl__ev_fd *ev,
 }
 
 int libxl__ctx_evtchn_init(libxl__gc *gc) {
-    xc_evtchn *xce;
+    xenevtchn_handle *xce;
     int rc, fd;
 
     if (CTX->xce)
         return 0;
 
-    xce = xc_evtchn_open(CTX->lg, 0);
+    xce = xenevtchn_open(CTX->lg, 0);
     if (!xce) {
         LOGE(ERROR,"cannot open libxc evtchn handle");
         rc = ERROR_FAIL;
         goto out;
     }
 
-    fd = xc_evtchn_fd(xce);
+    fd = xenevtchn_fd(xce);
     assert(fd >= 0);
 
     rc = libxl_fd_set_nonblock(CTX, fd, 1);
@@ -788,7 +788,7 @@ int libxl__ctx_evtchn_init(libxl__gc *gc) {
     return 0;
 
  out:
-    xc_evtchn_close(xce);
+    xenevtchn_close(xce);
     return rc;
 }
 
@@ -810,14 +810,14 @@ int libxl__ev_evtchn_wait(libxl__gc *gc, libxl__ev_evtchn *evev)
 
     if (!libxl__ev_fd_isregistered(&CTX->evtchn_efd)) {
         rc = libxl__ev_fd_register(gc, &CTX->evtchn_efd, evtchn_fd_callback,
-                                   xc_evtchn_fd(CTX->xce), POLLIN);
+                                   xenevtchn_fd(CTX->xce), POLLIN);
         if (rc) goto out;
     }
 
     if (evev->waiting)
         return 0;
 
-    r = xc_evtchn_unmask(CTX->xce, evev->port);
+    r = xenevtchn_unmask(CTX->xce, evev->port);
     if (r) {
         LOGE(ERROR,"cannot unmask event channel %d",evev->port);
         rc = ERROR_FAIL;
diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
index d2bda0a..fa01dd7 100644
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -48,6 +48,7 @@
 #include <sys/file.h>
 #include <sys/ioctl.h>
 
+#include <xenevtchn.h>
 #include <xenstore.h>
 #include <xenctrl.h>
 #include <xenguest.h>
@@ -441,7 +442,7 @@ struct libxl__ctx {
     uint32_t watch_counter; /* helps disambiguate slot reuse */
     libxl__ev_fd watch_efd;
 
-    xc_evtchn *xce; /* waiting must be done only with libxl__ev_evtchn* */
+    xenevtchn_handle *xce; /* waiting must be done only with libxl__ev_evtchn* */
     LIBXL_LIST_HEAD(, libxl__ev_evtchn) evtchns_waiting;
     libxl__ev_fd evtchn_efd;
 
@@ -916,7 +917,7 @@ static inline int libxl__ev_xswatch_isregistered(const libxl__ev_xswatch *xw)
  * When the event is signaled then the callback will be made, once.
  * Then you must call libxl__ev_evtchn_wait again, if desired.
  *
- * You must NOT call xc_evtchn_unmask.  wait will do that for you.
+ * You must NOT call xenevtchn_unmask.  wait will do that for you.
  *
  * Calling libxl__ev_evtchn_cancel will arrange for libxl to disregard
  * future occurrences of event.  Both libxl__ev_evtchn_wait and
diff --git a/tools/misc/Makefile b/tools/misc/Makefile
index c4490f3..cf6a475 100644
--- a/tools/misc/Makefile
+++ b/tools/misc/Makefile
@@ -4,6 +4,7 @@ include $(XEN_ROOT)/tools/Rules.mk
 CFLAGS += -Werror
 # Include configure output (config.h)
 CFLAGS += -include $(XEN_ROOT)/tools/config.h
+CFLAGS += $(CFLAGS_libxenevtchn)
 CFLAGS += $(CFLAGS_libxenctrl)
 CFLAGS += $(CFLAGS_xeninclude)
 CFLAGS += $(CFLAGS_libxenstore)
@@ -88,18 +89,18 @@ xenlockprof: xenlockprof.o
 # xen-hptool incorrectly uses libxc internals
 xen-hptool.o: CFLAGS += -I$(XEN_ROOT)/tools/libxc
 xen-hptool: xen-hptool.o
-	$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(LDLIBS_libxenguest) $(LDLIBS_libxenstore) $(APPEND_LDFLAGS)
+	$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenevtchn) $(LDLIBS_libxenctrl) $(LDLIBS_libxenguest) $(LDLIBS_libxenstore) $(APPEND_LDFLAGS)
 
 # xen-mfndump incorrectly uses libxc internals
 xen-mfndump.o: CFLAGS += -I$(XEN_ROOT)/tools/libxc
 xen-mfndump: xen-mfndump.o
-	$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(LDLIBS_libxenguest) $(APPEND_LDFLAGS)
+	$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenevtchn) $(LDLIBS_libxenctrl) $(LDLIBS_libxenguest) $(APPEND_LDFLAGS)
 
 xenwatchdogd: xenwatchdogd.o
 	$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(APPEND_LDFLAGS)
 
 xen-lowmemd: xen-lowmemd.o
-	$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(LDLIBS_libxenstore) $(APPEND_LDFLAGS)
+	$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenevtchn) $(LDLIBS_libxenctrl) $(LDLIBS_libxenstore) $(APPEND_LDFLAGS)
 
 gtraceview: gtraceview.o
 	$(CC) $(LDFLAGS) -o $@ $< $(CURSES_LIBS) $(TINFO_LIBS) $(APPEND_LDFLAGS)
diff --git a/tools/misc/xen-hptool.c b/tools/misc/xen-hptool.c
index c7561a9..ebcc9e8 100644
--- a/tools/misc/xen-hptool.c
+++ b/tools/misc/xen-hptool.c
@@ -1,3 +1,4 @@
+#include <xenevtchn.h>
 #include <xenctrl.h>
 #include <xc_private.h>
 #include <xc_core.h>
@@ -98,7 +99,7 @@ static int hp_mem_query_func(int argc, char *argv[])
     return ret;
 }
 
-static int suspend_guest(xc_interface *xch, xc_evtchn *xce, int domid,
+static int suspend_guest(xc_interface *xch, xenevtchn_handle *xce, int domid,
                          int *evtchn, int *lockfd)
 {
     int port, rc, suspend_evtchn = -1;
@@ -123,7 +124,7 @@ static int suspend_guest(xc_interface *xch, xc_evtchn *xce, int domid,
     }
     *evtchn = suspend_evtchn;
 
-    rc = xc_evtchn_notify(xce, suspend_evtchn);
+    rc = xenevtchn_notify(xce, suspend_evtchn);
     if (rc < 0)
     {
         fprintf(stderr, "Failed to notify suspend channel: errno %d\n", rc);
@@ -198,8 +199,8 @@ static int hp_mem_offline_func(int argc, char *argv[])
                 else if (status & PG_OFFLINE_OWNED)
                 {
                     int result, suspend_evtchn = -1, suspend_lockfd = -1;
-                    xc_evtchn *xce;
-                    xce = xc_evtchn_open(NULL, 0);
+                    xenevtchn_handle *xce;
+                    xce = xenevtchn_open(NULL, 0);
 
                     if (xce == NULL)
                     {
@@ -214,7 +215,7 @@ static int hp_mem_offline_func(int argc, char *argv[])
                     {
                         fprintf(stderr, "Failed to suspend guest %d for"
                                 " mfn %lx\n", domid, mfn);
-                        xc_evtchn_close(xce);
+                        xenevtchn_close(xce);
                         return -1;
                     }
 
@@ -238,7 +239,7 @@ static int hp_mem_offline_func(int argc, char *argv[])
                     xc_domain_resume(xch, domid, 1);
                     xc_suspend_evtchn_release(xch, xce, domid,
                                               suspend_evtchn, &suspend_lockfd);
-                    xc_evtchn_close(xce);
+                    xenevtchn_close(xce);
                 }
                 break;
             }
diff --git a/tools/misc/xen-lowmemd.c b/tools/misc/xen-lowmemd.c
index 82ffd75..3200404 100644
--- a/tools/misc/xen-lowmemd.c
+++ b/tools/misc/xen-lowmemd.c
@@ -4,22 +4,23 @@
  */
 
 #include <stdio.h>
+#include <xenevtchn.h>
 #include <xenctrl.h>
 #include <xenstore.h>
 #include <stdlib.h>
 #include <string.h>
 
 static evtchn_port_t virq_port      = -1;
-static xc_evtchn *xce_handle        = NULL;
+static xenevtchn_handle *xce_handle = NULL;
 static xc_interface *xch            = NULL;
 static struct xs_handle *xs_handle  = NULL;
 
 void cleanup(void)
 {
     if (virq_port > -1)
-        xc_evtchn_unbind(xce_handle, virq_port);
+        xenevtchn_unbind(xce_handle, virq_port);
     if (xce_handle)
-        xc_evtchn_close(xce_handle);
+        xenevtchn_close(xce_handle);
     if (xch)
         xc_interface_close(xch);
     if (xs_handle)
@@ -94,7 +95,7 @@ int main(int argc, char *argv[])
         return 1;
     }
 
-	xce_handle = xc_evtchn_open(NULL, 0);
+	xce_handle = xenevtchn_open(NULL, 0);
 	if (xce_handle == NULL)
     {
         perror("Failed to open evtchn device");
@@ -108,7 +109,7 @@ int main(int argc, char *argv[])
         return 3;
     }
 
-	if ((rc = xc_evtchn_bind_virq(xce_handle, VIRQ_ENOMEM)) == -1)
+	if ((rc = xenevtchn_bind_virq(xce_handle, VIRQ_ENOMEM)) == -1)
     {
         perror("Failed to bind to domain exception virq port");
         return 4;
@@ -120,7 +121,7 @@ int main(int argc, char *argv[])
     {
         evtchn_port_t port;
 
-        if ((port = xc_evtchn_pending(xce_handle)) == -1)
+        if ((port = xenevtchn_pending(xce_handle)) == -1)
         {
             perror("Failed to listen for pending event channel");
             return 5;
@@ -134,7 +135,7 @@ int main(int argc, char *argv[])
             return 6;
         }
 
-        if (xc_evtchn_unmask(xce_handle, port) == -1)
+        if (xenevtchn_unmask(xce_handle, port) == -1)
         {
             perror("Failed to unmask port");
             return 7;
diff --git a/tools/ocaml/libs/eventchn/Makefile b/tools/ocaml/libs/eventchn/Makefile
index 2d8d618..154efd4 100644
--- a/tools/ocaml/libs/eventchn/Makefile
+++ b/tools/ocaml/libs/eventchn/Makefile
@@ -2,13 +2,13 @@ TOPLEVEL=$(CURDIR)/../..
 XEN_ROOT=$(TOPLEVEL)/../..
 include $(TOPLEVEL)/common.make
 
-CFLAGS += $(CFLAGS_libxenctrl) $(CFLAGS_xeninclude)
+CFLAGS += $(CFLAGS_libxenevtchn) $(CFLAGS_xeninclude)
 
 OBJS = xeneventchn
 INTF = $(foreach obj, $(OBJS),$(obj).cmi)
 LIBS = xeneventchn.cma xeneventchn.cmxa
 
-LIBS_xeneventchn = $(LDLIBS_libxenctrl)
+LIBS_xeneventchn = $(LDLIBS_libxenevtchn)
 
 all: $(INTF) $(LIBS) $(PROGRAMS)
 
diff --git a/tools/ocaml/libs/eventchn/xeneventchn_stubs.c b/tools/ocaml/libs/eventchn/xeneventchn_stubs.c
index 5939e7c..c2d4737 100644
--- a/tools/ocaml/libs/eventchn/xeneventchn_stubs.c
+++ b/tools/ocaml/libs/eventchn/xeneventchn_stubs.c
@@ -24,7 +24,7 @@
 #include <xen/sysctl.h>
 #include <xen/xen.h>
 #include <xen/sys/evtchn.h>
-#include <xenctrl.h>
+#include <xenevtchn.h>
 
 #define CAML_NAME_SPACE
 #include <caml/mlvalues.h>
@@ -34,14 +34,14 @@
 #include <caml/callback.h>
 #include <caml/fail.h>
 
-#define _H(__h) ((xc_evtchn *)(__h))
+#define _H(__h) ((xenevtchn_handle *)(__h))
 
 CAMLprim value stub_eventchn_init(void)
 {
 	CAMLparam0();
 	CAMLlocal1(result);
 
-	xc_evtchn *xce = xc_evtchn_open(NULL, XC_OPENFLAG_NON_REENTRANT);
+	xenevtchn_handle *xce = xenevtchn_open(NULL, 0);
 	if (xce == NULL)
 		caml_failwith("open failed");
 
@@ -55,7 +55,7 @@ CAMLprim value stub_eventchn_fd(value xce)
 	CAMLlocal1(result);
 	int fd;
 
-	fd = xc_evtchn_fd(_H(xce));
+	fd = xenevtchn_fd(_H(xce));
 	if (fd == -1)
 		caml_failwith("evtchn fd failed");
 
@@ -69,7 +69,7 @@ CAMLprim value stub_eventchn_notify(value xce, value port)
 	CAMLparam2(xce, port);
 	int rc;
 
-	rc = xc_evtchn_notify(_H(xce), Int_val(port));
+	rc = xenevtchn_notify(_H(xce), Int_val(port));
 	if (rc == -1)
 		caml_failwith("evtchn notify failed");
 
@@ -83,7 +83,7 @@ CAMLprim value stub_eventchn_bind_interdomain(value xce, value domid,
 	CAMLlocal1(port);
 	evtchn_port_or_error_t rc;
 
-	rc = xc_evtchn_bind_interdomain(_H(xce), Int_val(domid), Int_val(remote_port));
+	rc = xenevtchn_bind_interdomain(_H(xce), Int_val(domid), Int_val(remote_port));
 	if (rc == -1)
 		caml_failwith("evtchn bind_interdomain failed");
 	port = Val_int(rc);
@@ -97,7 +97,7 @@ CAMLprim value stub_eventchn_bind_dom_exc_virq(value xce)
 	CAMLlocal1(port);
 	evtchn_port_or_error_t rc;
 
-	rc = xc_evtchn_bind_virq(_H(xce), VIRQ_DOM_EXC);
+	rc = xenevtchn_bind_virq(_H(xce), VIRQ_DOM_EXC);
 	if (rc == -1)
 		caml_failwith("evtchn bind_dom_exc_virq failed");
 	port = Val_int(rc);
@@ -110,7 +110,7 @@ CAMLprim value stub_eventchn_unbind(value xce, value port)
 	CAMLparam2(xce, port);
 	int rc;
 
-	rc = xc_evtchn_unbind(_H(xce), Int_val(port));
+	rc = xenevtchn_unbind(_H(xce), Int_val(port));
 	if (rc == -1)
 		caml_failwith("evtchn unbind failed");
 
@@ -123,7 +123,7 @@ CAMLprim value stub_eventchn_pending(value xce)
 	CAMLlocal1(result);
 	evtchn_port_or_error_t port;
 
-	port = xc_evtchn_pending(_H(xce));
+	port = xenevtchn_pending(_H(xce));
 	if (port == -1)
 		caml_failwith("evtchn pending failed");
 	result = Val_int(port);
@@ -137,7 +137,7 @@ CAMLprim value stub_eventchn_unmask(value xce, value _port)
 	evtchn_port_t port;
 
 	port = Int_val(_port);
-	if (xc_evtchn_unmask(_H(xce), port))
+	if (xenevtchn_unmask(_H(xce), port))
 		caml_failwith("evtchn unmask failed");
 	CAMLreturn(Val_unit);
 }
diff --git a/tools/python/setup.py b/tools/python/setup.py
index 9771cc4..ce317b4 100644
--- a/tools/python/setup.py
+++ b/tools/python/setup.py
@@ -8,13 +8,18 @@ extra_compile_args  = [ "-fno-strict-aliasing", "-Werror" ]
 
 PATH_XEN      = XEN_ROOT + "/tools/include"
 PATH_LIBXENTOOLLOG = XEN_ROOT + "/tools/libs/toollog"
+PATH_LIBXENEVTCHN = XEN_ROOT + "/tools/libs/evtchn"
 PATH_LIBXC    = XEN_ROOT + "/tools/libxc"
 PATH_LIBXL    = XEN_ROOT + "/tools/libxl"
 PATH_XENSTORE = XEN_ROOT + "/tools/xenstore"
 
 xc = Extension("xc",
                extra_compile_args = extra_compile_args,
-               include_dirs       = [ PATH_XEN, PATH_LIBXENTOOLLOG + "/include", PATH_LIBXC + "/include", "xen/lowlevel/xc" ],
+               include_dirs       = [ PATH_XEN,
+                                      PATH_LIBXENTOOLLOG + "/include",
+                                      PATH_LIBXENEVTCHN + "/include",
+                                      PATH_LIBXC + "/include",
+                                      "xen/lowlevel/xc" ],
                library_dirs       = [ PATH_LIBXC ],
                libraries          = [ "xenctrl", "xenguest" ],
                depends            = [ PATH_LIBXC + "/libxenctrl.so", PATH_LIBXC + "/libxenguest.so",  "-Wl,-rpath-link="+PATH_LIBXENTOOLLOG ],
diff --git a/tools/tests/xen-access/Makefile b/tools/tests/xen-access/Makefile
index f810543..97cfae4 100644
--- a/tools/tests/xen-access/Makefile
+++ b/tools/tests/xen-access/Makefile
@@ -5,6 +5,7 @@ CFLAGS += -Werror
 
 CFLAGS += $(CFLAGS_libxenctrl)
 CFLAGS += $(CFLAGS_libxenguest)
+CFLAGS += $(CFLAGS_libxenevtchn)
 CFLAGS += $(CFLAGS_xeninclude)
 
 TARGETS-y :=
@@ -25,6 +26,6 @@ clean:
 distclean: clean
 
 xen-access: xen-access.o Makefile
-	$(CC) -o $@ $< $(LDFLAGS) $(LDLIBS_libxenctrl) $(LDLIBS_libxenguest)
+	$(CC) -o $@ $< $(LDFLAGS) $(LDLIBS_libxenctrl) $(LDLIBS_libxenguest) $(LDLIBS_libxenevtchn)
 
 -include $(DEPS)
diff --git a/tools/tests/xen-access/xen-access.c b/tools/tests/xen-access/xen-access.c
index a52ca6e..7993947 100644
--- a/tools/tests/xen-access/xen-access.c
+++ b/tools/tests/xen-access/xen-access.c
@@ -39,6 +39,7 @@
 #include <sys/poll.h>
 
 #include <xenctrl.h>
+#include <xenevtchn.h>
 #include <xen/vm_event.h>
 
 #if defined(__arm__) || defined(__aarch64__)
@@ -54,7 +55,7 @@
 
 typedef struct vm_event {
     domid_t domain_id;
-    xc_evtchn *xce_handle;
+    xenevtchn_handle *xce_handle;
     int port;
     vm_event_back_ring_t back_ring;
     uint32_t evtchn_port;
@@ -77,9 +78,9 @@ static void close_handler(int sig)
     interrupted = sig;
 }
 
-int xc_wait_for_event_or_timeout(xc_interface *xch, xc_evtchn *xce, unsigned long ms)
+int xc_wait_for_event_or_timeout(xc_interface *xch, xenevtchn_handle *xce, unsigned long ms)
 {
-    struct pollfd fd = { .fd = xc_evtchn_fd(xce), .events = POLLIN | POLLERR };
+    struct pollfd fd = { .fd = xenevtchn_fd(xce), .events = POLLIN | POLLERR };
     int port;
     int rc;
 
@@ -95,14 +96,14 @@ int xc_wait_for_event_or_timeout(xc_interface *xch, xc_evtchn *xce, unsigned lon
 
     if ( rc == 1 )
     {
-        port = xc_evtchn_pending(xce);
+        port = xenevtchn_pending(xce);
         if ( port == -1 )
         {
             ERROR("Failed to read port from event channel");
             goto err;
         }
 
-        rc = xc_evtchn_unmask(xce, port);
+        rc = xenevtchn_unmask(xce, port);
         if ( rc != 0 )
         {
             ERROR("Failed to unmask event channel port");
@@ -143,7 +144,7 @@ int xenaccess_teardown(xc_interface *xch, xenaccess_t *xenaccess)
     /* Unbind VIRQ */
     if ( evtchn_bind )
     {
-        rc = xc_evtchn_unbind(xenaccess->vm_event.xce_handle,
+        rc = xenevtchn_unbind(xenaccess->vm_event.xce_handle,
                               xenaccess->vm_event.port);
         if ( rc != 0 )
         {
@@ -155,7 +156,7 @@ int xenaccess_teardown(xc_interface *xch, xenaccess_t *xenaccess)
     /* Close event channel */
     if ( evtchn_open )
     {
-        rc = xc_evtchn_close(xenaccess->vm_event.xce_handle);
+        rc = xenevtchn_close(xenaccess->vm_event.xce_handle);
         if ( rc != 0 )
         {
             ERROR("Error closing event channel");
@@ -223,7 +224,7 @@ xenaccess_t *xenaccess_init(xc_interface **xch_r, domid_t domain_id)
     mem_access_enable = 1;
 
     /* Open event channel */
-    xenaccess->vm_event.xce_handle = xc_evtchn_open(NULL, 0);
+    xenaccess->vm_event.xce_handle = xenevtchn_open(NULL, 0);
     if ( xenaccess->vm_event.xce_handle == NULL )
     {
         ERROR("Failed to open event channel");
@@ -232,7 +233,7 @@ xenaccess_t *xenaccess_init(xc_interface **xch_r, domid_t domain_id)
     evtchn_open = 1;
 
     /* Bind event notification */
-    rc = xc_evtchn_bind_interdomain(xenaccess->vm_event.xce_handle,
+    rc = xenevtchn_bind_interdomain(xenaccess->vm_event.xce_handle,
                                     xenaccess->vm_event.domain_id,
                                     xenaccess->vm_event.evtchn_port);
     if ( rc < 0 )
@@ -678,7 +679,7 @@ int main(int argc, char *argv[])
         }
 
         /* Tell Xen page is ready */
-        rc = xc_evtchn_notify(xenaccess->vm_event.xce_handle,
+        rc = xenevtchn_notify(xenaccess->vm_event.xce_handle,
                               xenaccess->vm_event.port);
 
         if ( rc != 0 )
diff --git a/tools/xcutils/Makefile b/tools/xcutils/Makefile
index fff519d..2d1f112 100644
--- a/tools/xcutils/Makefile
+++ b/tools/xcutils/Makefile
@@ -16,8 +16,8 @@ PROGRAMS = readnotes lsevtchn
 CFLAGS += -Werror
 
 # incorrectly uses libxc internals
-CFLAGS_readnotes.o  := $(CFLAGS_libxenctrl) $(CFLAGS_libxenguest) -I$(XEN_ROOT)/tools/libxc
-CFLAGS_lsevtchn.o   := $(CFLAGS_libxenctrl)
+CFLAGS_readnotes.o  := $(CFLAGS_libxenevtchn) $(CFLAGS_libxenctrl) $(CFLAGS_libxenguest) -I$(XEN_ROOT)/tools/libxc
+CFLAGS_lsevtchn.o   := $(CFLAGS_libxenevtchn) $(CFLAGS_libxenctrl)
 
 .PHONY: all
 all: build
diff --git a/tools/xenmon/Makefile b/tools/xenmon/Makefile
index 20ea100..98056f2 100644
--- a/tools/xenmon/Makefile
+++ b/tools/xenmon/Makefile
@@ -14,8 +14,10 @@ XEN_ROOT=$(CURDIR)/../..
 include $(XEN_ROOT)/tools/Rules.mk
 
 CFLAGS  += -Werror
+CFLAGS  += $(CFLAGS_libxenevtchn)
 CFLAGS  += $(CFLAGS_libxenctrl)
 LDLIBS  += $(LDLIBS_libxenctrl)
+LDLIBS  += $(LDLIBS_libxenevtchn)
 
 SCRIPTS = xenmon.py
 
diff --git a/tools/xenmon/xenbaked.c b/tools/xenmon/xenbaked.c
index 1ddb29b..e4602ef 100644
--- a/tools/xenmon/xenbaked.c
+++ b/tools/xenmon/xenbaked.c
@@ -37,6 +37,7 @@
 #include <unistd.h>
 #include <errno.h>
 #include <signal.h>
+#include <xenevtchn.h>
 #include <xenctrl.h>
 #include <xen/xen.h>
 #include <string.h>
@@ -267,7 +268,7 @@ static void log_event(int event_id)
 }
 
 int virq_port;
-xc_evtchn *xce_handle = NULL;
+xenevtchn_handle *xce_handle = NULL;
 
 /* Returns the event channel handle. */
 /* Stolen from xenstore code */
@@ -279,12 +280,12 @@ static int eventchn_init(void)
     if (0)
         return -1;
   
-    xce_handle = xc_evtchn_open(NULL, 0);
+    xce_handle = xenevtchn_open(NULL, 0);
 
     if (xce_handle == NULL)
         perror("Failed to open evtchn device");
   
-    if ((rc = xc_evtchn_bind_virq(xce_handle, VIRQ_TBUF)) == -1)
+    if ((rc = xenevtchn_bind_virq(xce_handle, VIRQ_TBUF)) == -1)
         perror("Failed to bind to domain exception virq port");
     virq_port = rc;
   
@@ -304,7 +305,7 @@ static void wait_for_event(void)
         return;
     }
 
-    evtchn_fd = xc_evtchn_fd(xce_handle);
+    evtchn_fd = xenevtchn_fd(xce_handle);
 
     FD_ZERO(&inset);
     FD_SET(evtchn_fd, &inset);
@@ -314,13 +315,13 @@ static void wait_for_event(void)
     ret = select(evtchn_fd+1, &inset, NULL, NULL, &tv);
   
     if ( (ret == 1) && FD_ISSET(evtchn_fd, &inset)) {
-        if ((port = xc_evtchn_pending(xce_handle)) == -1)
+        if ((port = xenevtchn_pending(xce_handle)) == -1)
             perror("Failed to read from event fd");
     
         //    if (port == virq_port)
         //      printf("got the event I was looking for\r\n");
 
-        if (xc_evtchn_unmask(xce_handle, port) == -1)
+        if (xenevtchn_unmask(xce_handle, port) == -1)
             perror("Failed to write to event fd");
     }
 }
diff --git a/tools/xenpaging/Makefile b/tools/xenpaging/Makefile
index e63d894..d491867 100644
--- a/tools/xenpaging/Makefile
+++ b/tools/xenpaging/Makefile
@@ -2,8 +2,8 @@ XEN_ROOT=$(CURDIR)/../..
 include $(XEN_ROOT)/tools/Rules.mk
 
 # xenpaging.c and file_ops.c incorrectly use libxc internals
-CFLAGS += $(CFLAGS_libxenctrl) $(CFLAGS_libxenstore) $(PTHREAD_CFLAGS) -I$(XEN_ROOT)/tools/libxc
-LDLIBS += $(LDLIBS_libxentoollog) $(LDLIBS_libxenctrl) $(LDLIBS_libxenstore) $(PTHREAD_LIBS)
+CFLAGS += $(CFLAGS_libxentoollog) $(CFLAGS_libxenevtchn) $(CFLAGS_libxenctrl) $(CFLAGS_libxenstore) $(PTHREAD_CFLAGS) -I$(XEN_ROOT)/tools/libxc
+LDLIBS += $(LDLIBS_libxentoollog) $(LDLIBS_libxenevtchn) $(LDLIBS_libxenctrl) $(LDLIBS_libxenstore) $(PTHREAD_LIBS)
 LDFLAGS += $(PTHREAD_LDFLAGS)
 
 POLICY    = default
diff --git a/tools/xenpaging/xenpaging.c b/tools/xenpaging/xenpaging.c
index b5ffee6..df99c6a 100644
--- a/tools/xenpaging/xenpaging.c
+++ b/tools/xenpaging/xenpaging.c
@@ -73,7 +73,7 @@ static void xenpaging_mem_paging_flush_ioemu_cache(struct xenpaging *paging)
 static int xenpaging_wait_for_event_or_timeout(struct xenpaging *paging)
 {
     xc_interface *xch = paging->xc_handle;
-    xc_evtchn *xce = paging->vm_event.xce_handle;
+    xenevtchn_handle *xce = paging->vm_event.xce_handle;
     char **vec, *val;
     unsigned int num;
     struct pollfd fd[2];
@@ -82,7 +82,7 @@ static int xenpaging_wait_for_event_or_timeout(struct xenpaging *paging)
     int timeout;
 
     /* Wait for event channel and xenstore */
-    fd[0].fd = xc_evtchn_fd(xce);
+    fd[0].fd = xenevtchn_fd(xce);
     fd[0].events = POLLIN | POLLERR;
     fd[1].fd = xs_fileno(paging->xs_handle);
     fd[1].events = POLLIN | POLLERR;
@@ -146,7 +146,7 @@ static int xenpaging_wait_for_event_or_timeout(struct xenpaging *paging)
     if ( rc && fd[0].revents & POLLIN )
     {
         DPRINTF("Got event from evtchn\n");
-        port = xc_evtchn_pending(xce);
+        port = xenevtchn_pending(xce);
         if ( port == -1 )
         {
             PERROR("Failed to read port from event channel");
@@ -154,7 +154,7 @@ static int xenpaging_wait_for_event_or_timeout(struct xenpaging *paging)
             goto err;
         }
 
-        rc = xc_evtchn_unmask(xce, port);
+        rc = xenevtchn_unmask(xce, port);
         if ( rc < 0 )
         {
             PERROR("Failed to unmask event channel port");
@@ -393,7 +393,7 @@ static struct xenpaging *xenpaging_init(int argc, char *argv[])
     }
 
     /* Open event channel */
-    paging->vm_event.xce_handle = xc_evtchn_open(NULL, 0);
+    paging->vm_event.xce_handle = xenevtchn_open(NULL, 0);
     if ( paging->vm_event.xce_handle == NULL )
     {
         PERROR("Failed to open event channel");
@@ -401,7 +401,7 @@ static struct xenpaging *xenpaging_init(int argc, char *argv[])
     }
 
     /* Bind event notification */
-    rc = xc_evtchn_bind_interdomain(paging->vm_event.xce_handle,
+    rc = xenevtchn_bind_interdomain(paging->vm_event.xce_handle,
                                     paging->vm_event.domain_id,
                                     paging->vm_event.evtchn_port);
     if ( rc < 0 )
@@ -531,7 +531,7 @@ static void xenpaging_teardown(struct xenpaging *paging)
     }
 
     /* Unbind VIRQ */
-    rc = xc_evtchn_unbind(paging->vm_event.xce_handle, paging->vm_event.port);
+    rc = xenevtchn_unbind(paging->vm_event.xce_handle, paging->vm_event.port);
     if ( rc != 0 )
     {
         PERROR("Error unbinding event port");
@@ -539,7 +539,7 @@ static void xenpaging_teardown(struct xenpaging *paging)
     paging->vm_event.port = -1;
 
     /* Close event channel */
-    rc = xc_evtchn_close(paging->vm_event.xce_handle);
+    rc = xenevtchn_close(paging->vm_event.xce_handle);
     if ( rc != 0 )
     {
         PERROR("Error closing event channel");
@@ -692,7 +692,7 @@ static int xenpaging_resume_page(struct xenpaging *paging, vm_event_response_t *
     }
 
     /* Tell Xen page is ready */
-    return xc_evtchn_notify(paging->vm_event.xce_handle, paging->vm_event.port);
+    return xenevtchn_notify(paging->vm_event.xce_handle, paging->vm_event.port);
 }
 
 static int xenpaging_populate_page(struct xenpaging *paging, unsigned long gfn, int i)
diff --git a/tools/xenpaging/xenpaging.h b/tools/xenpaging/xenpaging.h
index c6ab77c..d0f8d20 100644
--- a/tools/xenpaging/xenpaging.h
+++ b/tools/xenpaging/xenpaging.h
@@ -24,6 +24,7 @@
 #define __XEN_PAGING2_H__
 
 
+#include <xenevtchn.h>
 #include <xc_private.h>
 #include <xen/event_channel.h>
 #include <xen/vm_event.h>
@@ -32,7 +33,7 @@
 
 struct vm_event {
     domid_t domain_id;
-    xc_evtchn *xce_handle;
+    xenevtchn_handle *xce_handle;
     int port;
     vm_event_back_ring_t back_ring;
     uint32_t evtchn_port;
diff --git a/tools/xenstore/Makefile b/tools/xenstore/Makefile
index 1b4a494..c161046 100644
--- a/tools/xenstore/Makefile
+++ b/tools/xenstore/Makefile
@@ -9,6 +9,7 @@ CFLAGS += -I.
 # Include configure output (config.h)
 CFLAGS += -include $(XEN_ROOT)/tools/config.h
 CFLAGS += -I./include
+CFLAGS += $(CFLAGS_libxenevtchn)
 CFLAGS += $(CFLAGS_libxenctrl)
 CFLAGS += -DXEN_LIB_STORED="\"$(XEN_LIB_STORED)\""
 
@@ -75,10 +76,10 @@ endif
 init-xenstore-domain.o: CFLAGS += $(CFLAGS_libxenguest)
 
 init-xenstore-domain: init-xenstore-domain.o $(LIBXENSTORE)
-	$(CC) $^ $(LDFLAGS) $(LDLIBS_libxenctrl) $(LDLIBS_libxenguest) $(LDLIBS_libxenstore) -o $@ $(APPEND_LDFLAGS)
+	$(CC) $^ $(LDFLAGS) $(LDLIBS_libxenevtchn) $(LDLIBS_libxenctrl) $(LDLIBS_libxenguest) $(LDLIBS_libxenstore) -o $@ $(APPEND_LDFLAGS)
 
 xenstored: $(XENSTORED_OBJS)
-	$(CC) $^ $(LDFLAGS) $(LDLIBS_libxenctrl) $(SOCKET_LIBS) -o $@ $(APPEND_LDFLAGS)
+	$(CC) $^ $(LDFLAGS) $(LDLIBS_libxenevtchn) $(LDLIBS_libxenctrl) $(SOCKET_LIBS) -o $@ $(APPEND_LDFLAGS)
 
 xenstored.a: $(XENSTORED_OBJS)
 	$(AR) cr $@ $^
diff --git a/tools/xenstore/xenstored_core.c b/tools/xenstore/xenstored_core.c
index 3c0307e..f62c192 100644
--- a/tools/xenstore/xenstored_core.c
+++ b/tools/xenstore/xenstored_core.c
@@ -40,6 +40,8 @@
 #include <assert.h>
 #include <setjmp.h>
 
+#include <xenevtchn.h>
+
 #include "utils.h"
 #include "list.h"
 #include "talloc.h"
@@ -63,7 +65,7 @@
 #include <systemd/sd-daemon.h>
 #endif
 
-extern xc_evtchn *xce_handle; /* in xenstored_domain.c */
+extern xenevtchn_handle *xce_handle; /* in xenstored_domain.c */
 static int xce_pollfd_idx = -1;
 static struct pollfd *fds;
 static unsigned int current_array_size;
@@ -372,7 +374,7 @@ static void initialize_fds(int sock, int *p_sock_pollfd_idx,
 			set_fd(reopen_log_pipe[0], POLLIN|POLLPRI);
 
 	if (xce_handle != NULL)
-		xce_pollfd_idx = set_fd(xc_evtchn_fd(xce_handle),
+		xce_pollfd_idx = set_fd(xenevtchn_fd(xce_handle),
 					POLLIN|POLLPRI);
 
 	list_for_each_entry(conn, &connections, list) {
diff --git a/tools/xenstore/xenstored_domain.c b/tools/xenstore/xenstored_domain.c
index dcd6581..6ceec29 100644
--- a/tools/xenstore/xenstored_domain.c
+++ b/tools/xenstore/xenstored_domain.c
@@ -29,6 +29,7 @@
 #include "xenstored_transaction.h"
 #include "xenstored_watch.h"
 
+#include <xenevtchn.h>
 #include <xenctrl.h>
 #include <xen/grant_table.h>
 
@@ -36,7 +37,7 @@ static xc_interface **xc_handle;
 xc_gnttab **xcg_handle;
 static evtchn_port_t virq_port;
 
-xc_evtchn *xce_handle = NULL;
+xenevtchn_handle *xce_handle = NULL;
 
 struct domain
 {
@@ -128,7 +129,7 @@ static int writechn(struct connection *conn,
 	xen_mb();
 	intf->rsp_prod += len;
 
-	xc_evtchn_notify(xce_handle, conn->domain->port);
+	xenevtchn_notify(xce_handle, conn->domain->port);
 
 	return len;
 }
@@ -158,7 +159,7 @@ static int readchn(struct connection *conn, void *data, unsigned int len)
 	xen_mb();
 	intf->req_cons += len;
 
-	xc_evtchn_notify(xce_handle, conn->domain->port);
+	xenevtchn_notify(xce_handle, conn->domain->port);
 
 	return len;
 }
@@ -190,7 +191,7 @@ static int destroy_domain(void *_domain)
 	list_del(&domain->list);
 
 	if (domain->port) {
-		if (xc_evtchn_unbind(xce_handle, domain->port) == -1)
+		if (xenevtchn_unbind(xce_handle, domain->port) == -1)
 			eprintf("> Unbinding port %i failed!\n", domain->port);
 	}
 
@@ -239,13 +240,13 @@ void handle_event(void)
 {
 	evtchn_port_t port;
 
-	if ((port = xc_evtchn_pending(xce_handle)) == -1)
+	if ((port = xenevtchn_pending(xce_handle)) == -1)
 		barf_perror("Failed to read from event fd");
 
 	if (port == virq_port)
 		domain_cleanup();
 
-	if (xc_evtchn_unmask(xce_handle, port) == -1)
+	if (xenevtchn_unmask(xce_handle, port) == -1)
 		barf_perror("Failed to write to event fd");
 }
 
@@ -287,7 +288,7 @@ static struct domain *new_domain(void *context, unsigned int domid,
 	talloc_set_destructor(domain, destroy_domain);
 
 	/* Tell kernel we're interested in this event. */
-	rc = xc_evtchn_bind_interdomain(xce_handle, domid, port);
+	rc = xenevtchn_bind_interdomain(xce_handle, domid, port);
 	if (rc == -1)
 	    return NULL;
 	domain->port = rc;
@@ -392,8 +393,8 @@ void do_introduce(struct connection *conn, struct buffered_data *in)
 	} else if ((domain->mfn == mfn) && (domain->conn != conn)) {
 		/* Use XS_INTRODUCE for recreating the xenbus event-channel. */
 		if (domain->port)
-			xc_evtchn_unbind(xce_handle, domain->port);
-		rc = xc_evtchn_bind_interdomain(xce_handle, domid, port);
+			xenevtchn_unbind(xce_handle, domain->port);
+		rc = xenevtchn_bind_interdomain(xce_handle, domid, port);
 		domain->port = (rc == -1) ? 0 : rc;
 		domain->remote_port = port;
 	} else {
@@ -614,7 +615,7 @@ static int dom0_init(void)
 
 	talloc_steal(dom0->conn, dom0); 
 
-	xc_evtchn_notify(xce_handle, dom0->port); 
+	xenevtchn_notify(xce_handle, dom0->port); 
 
 	return 0; 
 }
@@ -643,7 +644,7 @@ void domain_init(void)
 	else
 		talloc_set_destructor(xcg_handle, close_xcg_handle);
 
-	xce_handle = xc_evtchn_open(NULL, 0);
+	xce_handle = xenevtchn_open(NULL, 0);
 
 	if (xce_handle == NULL)
 		barf_perror("Failed to open evtchn device");
@@ -651,7 +652,7 @@ void domain_init(void)
 	if (dom0_init() != 0) 
 		barf_perror("Failed to initialize dom0 state"); 
 
-	if ((rc = xc_evtchn_bind_virq(xce_handle, VIRQ_DOM_EXC)) == -1)
+	if ((rc = xenevtchn_bind_virq(xce_handle, VIRQ_DOM_EXC)) == -1)
 		barf_perror("Failed to bind to domain exception virq port");
 	virq_port = rc;
 }
diff --git a/tools/xentrace/Makefile b/tools/xentrace/Makefile
index 6c13cd1..0157be2 100644
--- a/tools/xentrace/Makefile
+++ b/tools/xentrace/Makefile
@@ -3,8 +3,11 @@ include $(XEN_ROOT)/tools/Rules.mk
 
 CFLAGS += -Werror
 
+CFLAGS += $(CFLAGS_libxenevtchn)
 CFLAGS += $(CFLAGS_libxenctrl)
-LDLIBS += $(LDLIBS_libxenctrl) $(ARGP_LDFLAGS)
+LDLIBS += $(LDLIBS_libxenevtchn)
+LDLIBS += $(LDLIBS_libxenctrl)
+LDLIBS += $(ARGP_LDFLAGS)
 
 BIN-$(CONFIG_X86) = xenalyze
 BIN      = $(BIN-y)
diff --git a/tools/xentrace/xentrace.c b/tools/xentrace/xentrace.c
index 4ee1458..c970d42 100644
--- a/tools/xentrace/xentrace.c
+++ b/tools/xentrace/xentrace.c
@@ -30,6 +30,7 @@
 #include <xen/xen.h>
 #include <xen/trace.h>
 
+#include <xenevtchn.h>
 #include <xenctrl.h>
 
 #define PERROR(_m, _a...)                                       \
@@ -74,7 +75,7 @@ settings_t opts;
 int interrupted = 0; /* gets set if we get a SIGHUP */
 
 static xc_interface *xc_handle;
-static xc_evtchn *xce_handle = NULL;
+static xenevtchn_handle *xce_handle = NULL;
 static int virq_port = -1;
 static int outfd = 1;
 
@@ -602,13 +603,13 @@ static void event_init(void)
 {
     int rc;
 
-    xce_handle = xc_evtchn_open(NULL, 0);
+    xce_handle = xenevtchn_open(NULL, 0);
     if (xce_handle == NULL) {
         perror("event channel open");
         exit(EXIT_FAILURE);
     }
 
-    rc = xc_evtchn_bind_virq(xce_handle, VIRQ_TBUF);
+    rc = xenevtchn_bind_virq(xce_handle, VIRQ_TBUF);
     if (rc == -1) {
         PERROR("failed to bind to VIRQ port");
         exit(EXIT_FAILURE);
@@ -623,7 +624,7 @@ static void event_init(void)
 static void wait_for_event_or_timeout(unsigned long milliseconds)
 {
     int rc;
-    struct pollfd fd = { .fd = xc_evtchn_fd(xce_handle),
+    struct pollfd fd = { .fd = xenevtchn_fd(xce_handle),
                          .events = POLLIN | POLLERR };
     int port;
 
@@ -636,7 +637,7 @@ static void wait_for_event_or_timeout(unsigned long milliseconds)
     }
 
     if (rc == 1) {
-        port = xc_evtchn_pending(xce_handle);
+        port = xenevtchn_pending(xce_handle);
         if (port == -1) {
             PERROR("failed to read port from evtchn");
             exit(EXIT_FAILURE);
@@ -647,7 +648,7 @@ static void wait_for_event_or_timeout(unsigned long milliseconds)
                     port, virq_port);
             exit(EXIT_FAILURE);
         }
-        rc = xc_evtchn_unmask(xce_handle, port);
+        rc = xenevtchn_unmask(xce_handle, port);
         if (rc == -1) {
             PERROR("failed to write port to evtchn");
             exit(EXIT_FAILURE);
-- 
2.1.4


_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
