diff --git a/tools/libxc/include/xenctrl.h b/tools/libxc/include/xenctrl.h
index 079cad0f4e..1bf70f9656 100644
--- a/tools/libxc/include/xenctrl.h
+++ b/tools/libxc/include/xenctrl.h
@@ -117,7 +117,7 @@
  */
 
 typedef struct xc_interface_core xc_interface;
-typedef struct xc_interface_core xc_evtchn;
+typedef struct xenevtchn_handle xc_evtchn;
 typedef struct xc_interface_core xc_gnttab;
 typedef struct xc_interface_core xc_gntshr;
 
diff --git a/tools/libxc/include/xenctrlosdep.h b/tools/libxc/include/xenctrlosdep.h
index 5121d9bd19..89564e1ff3 100644
--- a/tools/libxc/include/xenctrlosdep.h
+++ b/tools/libxc/include/xenctrlosdep.h
@@ -51,7 +51,6 @@
 
 enum xc_osdep_type {
     XC_OSDEP_PRIVCMD,
-    XC_OSDEP_EVTCHN,
     XC_OSDEP_GNTTAB,
     XC_OSDEP_GNTSHR,
 };
@@ -90,21 +89,6 @@ struct xc_osdep_ops
                                         int nentries);
         } privcmd;
         struct {
-            int (*fd)(xc_evtchn *xce, xc_osdep_handle h);
-
-            int (*notify)(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t port);
-
-            evtchn_port_or_error_t (*bind_unbound_port)(xc_evtchn *xce, xc_osdep_handle h, int domid);
-            evtchn_port_or_error_t (*bind_interdomain)(xc_evtchn *xce, xc_osdep_handle h, int domid,
-                                                       evtchn_port_t remote_port);
-            evtchn_port_or_error_t (*bind_virq)(xc_evtchn *xce, xc_osdep_handle h, unsigned int virq);
-
-            int (*unbind)(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t port);
-
-            evtchn_port_or_error_t (*pending)(xc_evtchn *xce, xc_osdep_handle h);
-            int (*unmask)(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t port);
-        } evtchn;
-        struct {
 #define XC_GRANT_MAP_SINGLE_DOMAIN 0x1
             void *(*grant_map)(xc_gnttab *xcg, xc_osdep_handle h,
                                uint32_t count, int flags, int prot,
diff --git a/tools/libxc/xc_evtchn.c b/tools/libxc/xc_evtchn.c
index 15f0580ef6..ae2fe1a21b 100644
--- a/tools/libxc/xc_evtchn.c
+++ b/tools/libxc/xc_evtchn.c
@@ -77,51 +77,6 @@ int xc_evtchn_status(xc_interface *xch, xc_evtchn_status_t *status)
                         sizeof(*status), 1);
 }
 
-int xc_evtchn_fd(xc_evtchn *xce)
-{
-    return xce->ops->u.evtchn.fd(xce, xce->ops_handle);
-}
-
-int xc_evtchn_notify(xc_evtchn *xce, evtchn_port_t port)
-{
-    return xce->ops->u.evtchn.notify(xce, xce->ops_handle, port);
-}
-
-evtchn_port_or_error_t
-xc_evtchn_bind_unbound_port(xc_evtchn *xce, int domid)
-{
-    return xce->ops->u.evtchn.bind_unbound_port(xce, xce->ops_handle, domid);
-}
-
-evtchn_port_or_error_t
-xc_evtchn_bind_interdomain(xc_evtchn *xce, int domid,
-                           evtchn_port_t remote_port)
-{
-    return xce->ops->u.evtchn.bind_interdomain(xce, xce->ops_handle, domid, remote_port);
-}
-
-evtchn_port_or_error_t
-xc_evtchn_bind_virq(xc_evtchn *xce, unsigned int virq)
-{
-    return xce->ops->u.evtchn.bind_virq(xce, xce->ops_handle, virq);
-}
-
-int xc_evtchn_unbind(xc_evtchn *xce, evtchn_port_t port)
-{
-    return xce->ops->u.evtchn.unbind(xce, xce->ops_handle, port);
-}
-
-evtchn_port_or_error_t
-xc_evtchn_pending(xc_evtchn *xce)
-{
-    return xce->ops->u.evtchn.pending(xce, xce->ops_handle);
-}
-
-int xc_evtchn_unmask(xc_evtchn *xce, evtchn_port_t port)
-{
-    return xce->ops->u.evtchn.unmask(xce, xce->ops_handle, port);
-}
-
 /*
  * Local variables:
  * mode: C
diff --git a/tools/libxc/xc_freebsd_osdep.c b/tools/libxc/xc_freebsd_osdep.c
index 4d31a1e454..4323e16fc3 100644
--- a/tools/libxc/xc_freebsd_osdep.c
+++ b/tools/libxc/xc_freebsd_osdep.c
@@ -252,34 +252,32 @@ static struct xc_osdep_ops freebsd_privcmd_ops = {
 };
 
 /*-------------------------- Evtchn device interface -------------------------*/
-static xc_osdep_handle
-freebsd_evtchn_open(xc_evtchn *xce)
+int osdep_evtchn_open(xc_evtchn *xce)
 {
     int fd = open(EVTCHN_DEV, O_RDWR);
     if ( fd == -1 )
-        return XC_OSDEP_OPEN_ERROR;
-
-    return (xc_osdep_handle)fd;
+        return -1;
+    xce->fd = fd;
+    return 0;
 }
 
-static int
-freebsd_evtchn_close(xc_evtchn *xce, xc_osdep_handle h)
+int osdep_evtchn_close(xc_evtchn *xce)
 {
-    int fd = (int)h;
-    return close(fd);
+    if ( xce->fd == -1 )
+        return 0;
+
+    return close(xce->fd);
 }
 
-static int
-freebsd_evtchn_fd(xc_evtchn *xce, xc_osdep_handle h)
+int xc_evtchn_fd(xc_evtchn *xce)
 {
-    return (int)h;
+    return xce->fd;
 }
 
 /*------------------------------ Evtchn interface ----------------------------*/
-static int
-freebsd_evtchn_notify(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t port)
+int xc_evtchn_notify(xc_evtchn *xce, evtchn_port_t port)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     struct ioctl_evtchn_notify notify;
 
     notify.port = port;
@@ -287,10 +285,9 @@ freebsd_evtchn_notify(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t port)
     return ioctl(fd, IOCTL_EVTCHN_NOTIFY, &notify);
 }
 
-static evtchn_port_or_error_t
-freebsd_evtchn_bind_unbound_port(xc_evtchn *xce, xc_osdep_handle h, int domid)
+evtchn_port_or_error_t xc_evtchn_bind_unbound_port(xc_evtchn *xce, int domid)
 {
-    int ret, fd = (int)h;
+    int ret, fd = xce->fd;
     struct ioctl_evtchn_bind_unbound_port bind;
 
     bind.remote_domain = domid;
@@ -299,11 +296,10 @@ freebsd_evtchn_bind_unbound_port(xc_evtchn *xce, xc_osdep_handle h, int domid)
     return ( ret == 0 ) ? bind.port : ret;
 }
 
-static evtchn_port_or_error_t
-freebsd_evtchn_bind_interdomain(xc_evtchn *xce, xc_osdep_handle h, int domid,
-                                evtchn_port_t remote_port)
+evtchn_port_or_error_t
+xc_evtchn_bind_interdomain(xc_evtchn *xce, int domid, evtchn_port_t remote_port)
 {
-    int ret, fd = (int)h;
+    int ret, fd = xce->fd;
     struct ioctl_evtchn_bind_interdomain bind;
 
     bind.remote_domain = domid;
@@ -313,10 +309,9 @@ freebsd_evtchn_bind_interdomain(xc_evtchn *xce, xc_osdep_handle h, int domid,
     return ( ret == 0 ) ? bind.port : ret;
 }
 
-static evtchn_port_or_error_t
-freebsd_evtchn_bind_virq(xc_evtchn *xce, xc_osdep_handle h, unsigned int virq)
+evtchn_port_or_error_t xc_evtchn_bind_virq(xc_evtchn *xce, unsigned int virq)
 {
-    int ret, fd = (int)h;
+    int ret, fd = xce->fd;
     struct ioctl_evtchn_bind_virq bind;
 
     bind.virq = virq;
@@ -325,10 +320,9 @@ freebsd_evtchn_bind_virq(xc_evtchn *xce, xc_osdep_handle h, unsigned int virq)
     return ( ret == 0 ) ? bind.port : ret;
 }
 
-static int
-freebsd_evtchn_unbind(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t port)
+int xc_evtchn_unbind(xc_evtchn *xce, evtchn_port_t port)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     struct ioctl_evtchn_unbind unbind;
 
     unbind.port = port;
@@ -336,10 +330,9 @@ freebsd_evtchn_unbind(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t port)
     return ioctl(fd, IOCTL_EVTCHN_UNBIND, &unbind);
 }
 
-static evtchn_port_or_error_t
-freebsd_evtchn_pending(xc_evtchn *xce, xc_osdep_handle h)
+evtchn_port_or_error_t xc_evtchn_pending(xc_evtchn *xce)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     evtchn_port_t port;
 
     if ( read(fd, &port, sizeof(port)) != sizeof(port) )
@@ -348,33 +341,15 @@ freebsd_evtchn_pending(xc_evtchn *xce, xc_osdep_handle h)
     return port;
 }
 
-static int
-freebsd_evtchn_unmask(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t port)
+int xc_evtchn_unmask(xc_evtchn *xce, evtchn_port_t port)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
 
     if ( write(fd, &port, sizeof(port)) != sizeof(port) )
         return -1;
     return 0;
 }
 
-/*----------------------------- Evtchn handlers ------------------------------*/
-static struct xc_osdep_ops freebsd_evtchn_ops = {
-    .open = &freebsd_evtchn_open,
-    .close = &freebsd_evtchn_close,
-
-    .u.evtchn = {
-        .fd = &freebsd_evtchn_fd,
-        .notify = &freebsd_evtchn_notify,
-        .bind_unbound_port = &freebsd_evtchn_bind_unbound_port,
-        .bind_interdomain = &freebsd_evtchn_bind_interdomain,
-        .bind_virq = &freebsd_evtchn_bind_virq,
-        .unbind = &freebsd_evtchn_unbind,
-        .pending = &freebsd_evtchn_pending,
-        .unmask = &freebsd_evtchn_unmask,
-    },
-};
-
 /*---------------------------- FreeBSD interface -----------------------------*/
 static struct xc_osdep_ops *
 freebsd_osdep_init(xc_interface *xch, enum xc_osdep_type type)
@@ -383,8 +358,6 @@ freebsd_osdep_init(xc_interface *xch, enum xc_osdep_type type)
     {
     case XC_OSDEP_PRIVCMD:
         return &freebsd_privcmd_ops;
-    case XC_OSDEP_EVTCHN:
-        return &freebsd_evtchn_ops;
     default:
         return NULL;
     }
diff --git a/tools/libxc/xc_linux_osdep.c b/tools/libxc/xc_linux_osdep.c
index c3a3a140e2..90544fb3ab 100644
--- a/tools/libxc/xc_linux_osdep.c
+++ b/tools/libxc/xc_linux_osdep.c
@@ -38,10 +38,9 @@
 #include "xenctrl.h"
 #include "xenctrlosdep.h"
 
+#include "xc_private.h"
+
 #define ROUNDUP(_x,_w) (((unsigned long)(_x)+(1UL<<(_w))-1) & ~((1UL<<(_w))-1))
-#define ERROR(_m, _a...)  xc_osdep_log(xch,XTL_ERROR,XC_INTERNAL_ERROR,_m , ## _a )
-#define PERROR(_m, _a...) xc_osdep_log(xch,XTL_ERROR,XC_INTERNAL_ERROR,_m \
-                  " (%d = %s)", ## _a , errno, xc_strerror(xch, errno))
 
 static xc_osdep_handle linux_privcmd_open(xc_interface *xch)
 {
@@ -462,29 +461,31 @@ static struct xc_osdep_ops linux_privcmd_ops = {
 
 #define DEVXEN "/dev/xen/"
 
-static xc_osdep_handle linux_evtchn_open(xc_evtchn *xce)
+int osdep_evtchn_open(xc_evtchn *xce)
 {
     int fd = open(DEVXEN "evtchn", O_RDWR);
     if ( fd == -1 )
-        return XC_OSDEP_OPEN_ERROR;
-
-    return (xc_osdep_handle)fd;
+        return -1;
+    xce->fd = fd;
+    return 0;
 }
 
-static int linux_evtchn_close(xc_evtchn *xce, xc_osdep_handle h)
+int osdep_evtchn_close(xc_evtchn *xce)
 {
-    int fd = (int)h;
-    return close(fd);
+    if ( xce->fd == -1 )
+        return 0;
+
+    return close(xce->fd);
 }
 
-static int linux_evtchn_fd(xc_evtchn *xce, xc_osdep_handle h)
+int xc_evtchn_fd(xc_evtchn *xce)
 {
-    return (int)h;
+    return xce->fd;
 }
 
-static int linux_evtchn_notify(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t port)
+int xc_evtchn_notify(xc_evtchn *xce, evtchn_port_t port)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     struct ioctl_evtchn_notify notify;
 
     notify.port = port;
@@ -492,10 +493,9 @@ static int linux_evtchn_notify(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t
     return ioctl(fd, IOCTL_EVTCHN_NOTIFY, &notify);
 }
 
-static evtchn_port_or_error_t
-linux_evtchn_bind_unbound_port(xc_evtchn *xce, xc_osdep_handle h, int domid)
+evtchn_port_or_error_t xc_evtchn_bind_unbound_port(xc_evtchn *xce, int domid)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     struct ioctl_evtchn_bind_unbound_port bind;
 
     bind.remote_domain = domid;
@@ -503,11 +503,10 @@ linux_evtchn_bind_unbound_port(xc_evtchn *xce, xc_osdep_handle h, int domid)
     return ioctl(fd, IOCTL_EVTCHN_BIND_UNBOUND_PORT, &bind);
 }
 
-static evtchn_port_or_error_t
-linux_evtchn_bind_interdomain(xc_evtchn *xce, xc_osdep_handle h, int domid,
-                              evtchn_port_t remote_port)
+evtchn_port_or_error_t xc_evtchn_bind_interdomain(xc_evtchn *xce, int domid,
+                                                  evtchn_port_t remote_port)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     struct ioctl_evtchn_bind_interdomain bind;
 
     bind.remote_domain = domid;
@@ -516,10 +515,9 @@ linux_evtchn_bind_interdomain(xc_evtchn *xce, xc_osdep_handle h, int domid,
     return ioctl(fd, IOCTL_EVTCHN_BIND_INTERDOMAIN, &bind);
 }
 
-static evtchn_port_or_error_t
-linux_evtchn_bind_virq(xc_evtchn *xce, xc_osdep_handle h, unsigned int virq)
+evtchn_port_or_error_t xc_evtchn_bind_virq(xc_evtchn *xce, unsigned int virq)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     struct ioctl_evtchn_bind_virq bind;
 
     bind.virq = virq;
@@ -527,9 +525,9 @@ linux_evtchn_bind_virq(xc_evtchn *xce, xc_osdep_handle h, unsigned int virq)
     return ioctl(fd, IOCTL_EVTCHN_BIND_VIRQ, &bind);
 }
 
-static int linux_evtchn_unbind(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t port)
+int xc_evtchn_unbind(xc_evtchn *xce, evtchn_port_t port)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     struct ioctl_evtchn_unbind unbind;
 
     unbind.port = port;
@@ -537,9 +535,9 @@ static int linux_evtchn_unbind(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t
     return ioctl(fd, IOCTL_EVTCHN_UNBIND, &unbind);
 }
 
-static evtchn_port_or_error_t linux_evtchn_pending(xc_evtchn *xce, xc_osdep_handle h)
+evtchn_port_or_error_t xc_evtchn_pending(xc_evtchn *xce)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     evtchn_port_t port;
 
     if ( read(fd, &port, sizeof(port)) != sizeof(port) )
@@ -548,31 +546,15 @@ static evtchn_port_or_error_t linux_evtchn_pending(xc_evtchn *xce, xc_osdep_hand
     return port;
 }
 
-static int linux_evtchn_unmask(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t port)
+int xc_evtchn_unmask(xc_evtchn *xce, evtchn_port_t port)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
 
     if ( write(fd, &port, sizeof(port)) != sizeof(port) )
         return -1;
     return 0;
 }
 
-static struct xc_osdep_ops linux_evtchn_ops = {
-    .open = &linux_evtchn_open,
-    .close = &linux_evtchn_close,
-
-    .u.evtchn = {
-        .fd = &linux_evtchn_fd,
-        .notify = &linux_evtchn_notify,
-        .bind_unbound_port = &linux_evtchn_bind_unbound_port,
-        .bind_interdomain = &linux_evtchn_bind_interdomain,
-        .bind_virq = &linux_evtchn_bind_virq,
-        .unbind = &linux_evtchn_unbind,
-        .pending = &linux_evtchn_pending,
-        .unmask = &linux_evtchn_unmask,
-    },
-};
-
 static xc_osdep_handle linux_gnttab_open(xc_gnttab *xcg)
 {
     int fd = open(DEVXEN "gntdev", O_RDWR);
@@ -876,8 +858,6 @@ static struct xc_osdep_ops *linux_osdep_init(xc_interface *xch, enum xc_osdep_ty
     {
     case XC_OSDEP_PRIVCMD:
         return &linux_privcmd_ops;
-    case XC_OSDEP_EVTCHN:
-        return &linux_evtchn_ops;
     case XC_OSDEP_GNTTAB:
         return &linux_gnttab_ops;
     case XC_OSDEP_GNTSHR:
diff --git a/tools/libxc/xc_minios.c b/tools/libxc/xc_minios.c
index 4f6498f255..4ace1b594b 100644
--- a/tools/libxc/xc_minios.c
+++ b/tools/libxc/xc_minios.c
@@ -219,20 +219,23 @@ static void port_dealloc(struct evtchn_port_info *port_info) {
     free(port_info);
 }
 
-static xc_osdep_handle minios_evtchn_open(xc_evtchn *xce)
+int osdep_evtchn_open(xc_evtchn *xce)
 {
     int fd = alloc_fd(FTYPE_EVTCHN);
     if ( fd == -1 )
-        return XC_OSDEP_OPEN_ERROR;
+        return -1;
     LIST_INIT(&files[fd].evtchn.ports);
+    xce->fd = fd;
     printf("evtchn_open() -> %d\n", fd);
-    return (xc_osdep_handle)fd;
+    return 0;
 }
 
-static int minios_evtchn_close(xc_evtchn *xce, xc_osdep_handle h)
+int osdep_evtchn_close(xc_evtchn *xce, xc_osdep_handle h)
 {
-    int fd = (int)h;
-    return close(fd);
+    if ( xce->fd == -1 )
+        return 0;
+
+    return close(xce->fd);
 }
 
 void minios_evtchn_close_fd(int fd)
@@ -244,12 +247,12 @@ void minios_evtchn_close_fd(int fd)
     files[fd].type = FTYPE_NONE;
 }
 
-static int minios_evtchn_fd(xc_evtchn *xce, xc_osdep_handle h)
+int xc_evtchn_fd(xc_evtchn *xce)
 {
-    return (int)h;
+    return xce->fd;
 }
 
-static int minios_evtchn_notify(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t port)
+int xc_evtchn_notify(xc_evtchn *xce, evtchn_port_t port)
 {
     int ret;
 
@@ -281,9 +284,9 @@ static void evtchn_handler(evtchn_port_t port, struct pt_regs *regs, void *data)
     wake_up(&event_queue);
 }
 
-static evtchn_port_or_error_t minios_evtchn_bind_unbound_port(xc_evtchn *xce, xc_osdep_handle h, int domid)
+evtchn_port_or_error_t xc_evtchn_bind_unbound_port(xc_evtchn *xce, int domid)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     struct evtchn_port_info *port_info;
     int ret;
     evtchn_port_t port;
@@ -308,10 +311,10 @@ static evtchn_port_or_error_t minios_evtchn_bind_unbound_port(xc_evtchn *xce, xc
     return port;
 }
 
-static evtchn_port_or_error_t minios_evtchn_bind_interdomain(xc_evtchn *xce, xc_osdep_handle h, int domid,
-    evtchn_port_t remote_port)
+evtchn_port_or_error_t xc_evtchn_bind_interdomain(xc_evtchn *xce, int domid,
+                                                  evtchn_port_t remote_port)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     struct evtchn_port_info *port_info;
     evtchn_port_t local_port;
     int ret;
@@ -336,9 +339,9 @@ static evtchn_port_or_error_t minios_evtchn_bind_interdomain(xc_evtchn *xce, xc_
     return local_port;
 }
 
-static int minios_evtchn_unbind(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t port)
+int xc_evtchn_unbind(xc_evtchn *xce, evtchn_port_t port)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     struct evtchn_port_info *port_info;
 
     LIST_FOREACH(port_info, &files[fd].evtchn.ports, list) {
@@ -352,9 +355,9 @@ static int minios_evtchn_unbind(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t
     return -1;
 }
 
-static evtchn_port_or_error_t minios_evtchn_bind_virq(xc_evtchn *xce, xc_osdep_handle h, unsigned int virq)
+evtchn_port_or_error_t xc_evtchn_bind_virq(xc_evtchn *xce, unsigned int virq)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     struct evtchn_port_info *port_info;
     evtchn_port_t port;
 
@@ -377,9 +380,9 @@ static evtchn_port_or_error_t minios_evtchn_bind_virq(xc_evtchn *xce, xc_osdep_h
     return port;
 }
 
-static evtchn_port_or_error_t minios_evtchn_pending(xc_evtchn *xce, xc_osdep_handle h)
+evtchn_port_or_error_t xc_evtchn_pending(xc_evtchn *xce)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     struct evtchn_port_info *port_info;
     unsigned long flags;
     evtchn_port_t ret = -1;
@@ -402,28 +405,12 @@ static evtchn_port_or_error_t minios_evtchn_pending(xc_evtchn *xce, xc_osdep_han
     return ret;
 }
 
-static int minios_evtchn_unmask(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t port)
+int xc_evtchn_unmask(xc_evtchn *xce, evtchn_port_t port)
 {
     unmask_evtchn(port);
     return 0;
 }
 
-static struct xc_osdep_ops minios_evtchn_ops = {
-    .open = &minios_evtchn_open,
-    .close = &minios_evtchn_close,
-
-    .u.evtchn = {
-        .fd = &minios_evtchn_fd,
-        .notify = &minios_evtchn_notify,
-        .bind_unbound_port = &minios_evtchn_bind_unbound_port,
-        .bind_interdomain = &minios_evtchn_bind_interdomain,
-        .bind_virq = &minios_evtchn_bind_virq,
-        .unbind = &minios_evtchn_unbind,
-        .pending = &minios_evtchn_pending,
-        .unmask = &minios_evtchn_unmask,
-   },
-};
-
 /* Optionally flush file to disk and discard page cache */
 void discard_file_cache(xc_interface *xch, int fd, int flush)
 {
@@ -523,8 +510,6 @@ static struct xc_osdep_ops *minios_osdep_init(xc_interface *xch, enum xc_osdep_t
     {
     case XC_OSDEP_PRIVCMD:
         return &minios_privcmd_ops;
-    case XC_OSDEP_EVTCHN:
-        return &minios_evtchn_ops;
     case XC_OSDEP_GNTTAB:
         return &minios_gnttab_ops;
     default:
diff --git a/tools/libxc/xc_netbsd.c b/tools/libxc/xc_netbsd.c
index 54f1d7ba2a..b1b828f78c 100644
--- a/tools/libxc/xc_netbsd.c
+++ b/tools/libxc/xc_netbsd.c
@@ -225,29 +225,31 @@ static struct xc_osdep_ops netbsd_privcmd_ops = {
 
 #define EVTCHN_DEV_NAME  "/dev/xenevt"
 
-static xc_osdep_handle netbsd_evtchn_open(xc_evtchn *xce)
+int osdep_evtchn_open(xc_evtchn *xce)
 {
     int fd = open(EVTCHN_DEV_NAME, O_NONBLOCK|O_RDWR);
     if ( fd == -1 )
-        return XC_OSDEP_OPEN_ERROR;
-
-    return (xc_osdep_handle)fd;
+        return -1;
+    xce->fd = fd;
+    return 0;
 }
 
-static int netbsd_evtchn_close(xc_evtchn *xce, xc_osdep_handle h)
+int osdep_evtchn_close(xc_evtchn *xce, xc_osdep_handle h)
 {
-    int fd = (int)h;
-    return close(fd);
+    if ( xce->fd == -1 )
+        return 0;
+
+    return close(xce->fd);
 }
 
-static int netbsd_evtchn_fd(xc_evtchn *xce, xc_osdep_handle h)
+int xc_evtchn_fd(xc_evtchn *xce)
 {
-    return (int)h;
+    return xce->fd;
 }
 
-static int netbsd_evtchn_notify(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t port)
+int xc_evtchn_notify(xc_evtchn *xce, evtchn_port_t port)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     struct ioctl_evtchn_notify notify;
 
     notify.port = port;
@@ -255,10 +257,9 @@ static int netbsd_evtchn_notify(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t
     return ioctl(fd, IOCTL_EVTCHN_NOTIFY, &notify);
 }
 
-static evtchn_port_or_error_t
-netbsd_evtchn_bind_unbound_port(xc_evtchn * xce, xc_osdep_handle h, int domid)
+evtchn_port_or_error_t xc_evtchn_bind_unbound_port(xc_evtchn * xce, int domid)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     struct ioctl_evtchn_bind_unbound_port bind;
     int ret;
 
@@ -271,11 +272,10 @@ netbsd_evtchn_bind_unbound_port(xc_evtchn * xce, xc_osdep_handle h, int domid)
 	return -1;
 }
 
-static evtchn_port_or_error_t
-netbsd_evtchn_bind_interdomain(xc_evtchn *xce, xc_osdep_handle h, int domid,
-                               evtchn_port_t remote_port)
+evtchn_port_or_error_t xc_evtchn_bind_interdomain(xc_evtchn *xce, int domid,
+                                                  evtchn_port_t remote_port)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     struct ioctl_evtchn_bind_interdomain bind;
     int ret;
 
@@ -289,9 +289,9 @@ netbsd_evtchn_bind_interdomain(xc_evtchn *xce, xc_osdep_handle h, int domid,
 	return -1;
 }
 
-static int netbsd_evtchn_unbind(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t port)
+int xc_evtchn_unbind(xc_evtchn *xce, evtchn_port_t port)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     struct ioctl_evtchn_unbind unbind;
 
     unbind.port = port;
@@ -299,10 +299,9 @@ static int netbsd_evtchn_unbind(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t
     return ioctl(fd, IOCTL_EVTCHN_UNBIND, &unbind);
 }
 
-static evtchn_port_or_error_t
-netbsd_evtchn_bind_virq(xc_evtchn *xce, xc_osdep_handle h, unsigned int virq)
+evtchn_port_or_error_t xc_evtchn_bind_virq(xc_evtchn *xce, unsigned int virq)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     struct ioctl_evtchn_bind_virq bind;
     int err;
 
@@ -315,10 +314,9 @@ netbsd_evtchn_bind_virq(xc_evtchn *xce, xc_osdep_handle h, unsigned int virq)
 	return bind.port;
 }
 
-static evtchn_port_or_error_t
-netbsd_evtchn_pending(xc_evtchn *xce, xc_osdep_handle h)
+evtchn_port_or_error_t xc_evtchn_pending(xc_evtchn *xce)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     evtchn_port_t port;
 
     if ( read_exact(fd, (char *)&port, sizeof(port)) == -1 )
@@ -327,28 +325,12 @@ netbsd_evtchn_pending(xc_evtchn *xce, xc_osdep_handle h)
     return port;
 }
 
-static int netbsd_evtchn_unmask(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t port)
+int xc_evtchn_unmask(xc_evtchn *xce, evtchn_port_t port)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     return write_exact(fd, (char *)&port, sizeof(port));
 }
 
-static struct xc_osdep_ops netbsd_evtchn_ops = {
-    .open = &netbsd_evtchn_open,
-    .close = &netbsd_evtchn_close,
-
-    .u.evtchn = {
-         .fd = &netbsd_evtchn_fd,
-         .notify = &netbsd_evtchn_notify,
-         .bind_unbound_port = &netbsd_evtchn_bind_unbound_port,
-         .bind_interdomain = &netbsd_evtchn_bind_interdomain,
-         .bind_virq = &netbsd_evtchn_bind_virq,
-         .unbind = &netbsd_evtchn_unbind,
-         .pending = &netbsd_evtchn_pending,
-         .unmask = &netbsd_evtchn_unmask,
-    },
-};
-
 /* Optionally flush file to disk and discard page cache */
 void discard_file_cache(xc_interface *xch, int fd, int flush) 
 {
@@ -395,8 +377,6 @@ static struct xc_osdep_ops *netbsd_osdep_init(xc_interface *xch, enum xc_osdep_t
     {
     case XC_OSDEP_PRIVCMD:
         return &netbsd_privcmd_ops;
-    case XC_OSDEP_EVTCHN:
-        return &netbsd_evtchn_ops;
     default:
         return NULL;
     }
diff --git a/tools/libxc/xc_private.c b/tools/libxc/xc_private.c
index 6c0c0d62a0..cb79f227c9 100644
--- a/tools/libxc/xc_private.c
+++ b/tools/libxc/xc_private.c
@@ -119,7 +119,6 @@ static const char *xc_osdep_type_name(enum xc_osdep_type type)
     switch ( type )
     {
     case XC_OSDEP_PRIVCMD: return "privcmd";
-    case XC_OSDEP_EVTCHN:  return "evtchn";
     case XC_OSDEP_GNTTAB:  return "gnttab";
     case XC_OSDEP_GNTSHR:  return "gntshr";
     }
@@ -252,20 +251,44 @@ 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 *xc_evtchn_open(xentoollog_logger *logger, unsigned open_flags)
 {
-    xc_evtchn *xce;
+    xc_evtchn *xce = malloc(sizeof(*xce));
+    int rc;
 
-    xce = xc_interface_open_common(logger, NULL, open_flags,
-                                   XC_OSDEP_EVTCHN);
+    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)
 {
-    return xc_interface_close_common(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,
diff --git a/tools/libxc/xc_private.h b/tools/libxc/xc_private.h
index f603c15d29..f4d155a275 100644
--- a/tools/libxc/xc_private.h
+++ b/tools/libxc/xc_private.h
@@ -123,6 +123,13 @@ 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,
@@ -446,3 +453,13 @@ void *xc_vm_event_enable(xc_interface *xch, domid_t domain_id, int param,
                          uint32_t *port);
 
 #endif /* __XC_PRIVATE_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/libxc/xc_solaris.c b/tools/libxc/xc_solaris.c
index 7e5d847634..088228a1cb 100644
--- a/tools/libxc/xc_solaris.c
+++ b/tools/libxc/xc_solaris.c
@@ -194,33 +194,36 @@ static struct xc_osdep_ops solaris_privcmd_ops = {
     },
 };
 
-static xc_osdep_handle solaris_evtchn_open(xc_evtchn *xce)
+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 XC_OSDEP_OPEN_ERROR;
+        return -1;
     }
 
-    return (xc_osdep_handle)fd;
+    xce->fd = fd;
+    return 0;
 }
 
-static int solaris_evtchn_close(xc_evtchn *xce, xc_osdep_handle h)
+int osdep_evtchn_close(xc_evtchn *xce)
 {
-    int fd = (int)h;
-    return close(fd);
+    if ( xce->fd == -1 )
+        return 0;
+
+    return close(xce->fd);
 }
 
-static int solaris_evtchn_fd(xc_evtchn *xce, xc_osdep_handle h)
+int xc_evtchn_fd(xc_evtchn *xce)
 {
-    return (int)h;
+    return xce->fd;
 }
 
-static int solaris_evtchn_notify(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t port)
+int xc_evtchn_notify(xc_evtchn *xce, evtchn_port_t port)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     struct ioctl_evtchn_notify notify;
 
     notify.port = port;
@@ -228,10 +231,9 @@ static int solaris_evtchn_notify(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_
     return ioctl(fd, IOCTL_EVTCHN_NOTIFY, &notify);
 }
 
-static evtchn_port_or_error_t
-solaris_evtchn_bind_unbound_port(xc_evtchn *xce, xc_osdep_handle h, int domid)
+evtchn_port_or_error_t xc_evtchn_bind_unbound_port(xc_evtchn *xce, int domid)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     struct ioctl_evtchn_bind_unbound_port bind;
 
     bind.remote_domain = domid;
@@ -239,11 +241,10 @@ solaris_evtchn_bind_unbound_port(xc_evtchn *xce, xc_osdep_handle h, int domid)
     return ioctl(fd, IOCTL_EVTCHN_BIND_UNBOUND_PORT, &bind);
 }
 
-evtchn_port_or_error_t
-solaris_evtchn_bind_interdomain(xc_evtchn *xce, xc_osdep_handle h, int domid,
-                           evtchn_port_t remote_port)
+evtchn_port_or_error_t xc_evtchn_bind_interdomain(xc_evtchn *xce, int domid,
+                                                  evtchn_port_t remote_port)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     struct ioctl_evtchn_bind_interdomain bind;
 
     bind.remote_domain = domid;
@@ -252,10 +253,9 @@ solaris_evtchn_bind_interdomain(xc_evtchn *xce, xc_osdep_handle h, int domid,
     return ioctl(fd, IOCTL_EVTCHN_BIND_INTERDOMAIN, &bind);
 }
 
-static evtchn_port_or_error_t
-solaris_evtchn_bind_virq(xc_evtchn *xce, xc_osdep_handle h, unsigned int virq)
+evtchn_port_or_error_t xc_evtchn_bind_virq(xc_evtchn *xce, unsigned int virq)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     struct ioctl_evtchn_bind_virq bind;
 
     bind.virq = virq;
@@ -263,9 +263,9 @@ solaris_evtchn_bind_virq(xc_evtchn *xce, xc_osdep_handle h, unsigned int virq)
     return ioctl(fd, IOCTL_EVTCHN_BIND_VIRQ, &bind);
 }
 
-static int solaris_evtchn_unbind(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t port)
+int xc_evtchn_unbind(xc_evtchn *xce, evtchn_port_t port)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     struct ioctl_evtchn_unbind unbind;
 
     unbind.port = port;
@@ -273,10 +273,9 @@ static int solaris_evtchn_unbind(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_
     return ioctl(fd, IOCTL_EVTCHN_UNBIND, &unbind);
 }
 
-static evtchn_port_or_error_t
-solaris_evtchn_pending(xc_evtchn *xce, xc_osdep_handle h)
+evtchn_port_or_error_t xc_evtchn_pending(xc_evtchn *xce)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     evtchn_port_t port;
 
     if ( read_exact(fd, (char *)&port, sizeof(port)) == -1 )
@@ -285,28 +284,12 @@ solaris_evtchn_pending(xc_evtchn *xce, xc_osdep_handle h)
     return port;
 }
 
-static int solaris_evtchn_unmask(xc_evtchn *xce, xc_osdep_handle h,evtchn_port_t port)
+int xc_evtchn_unmask(xc_evtchn *xce, evtchn_port_t port)
 {
-    int fd = (int)h;
+    int fd = xce->fd;
     return write_exact(fd, (char *)&port, sizeof(port));
 }
 
-static struct xc_osdep_ops solaris_evtchn_ops = {
-    .open = &solaris_evtchn_open,
-    .close = &solaris_evtchn_close,
-
-    .u.evtchn = {
-        .fd = &solaris_evtchn_fd,
-        .notify = &solaris_evtchn_notify,
-        .bind_unbound_port = &solaris_evtchn_bind_unbound_port,
-        .bind_interdomain = &solaris_evtchn_bind_interdomain,
-        .bind_virq = &solaris_evtchn_bind_virq,
-        .unbind = &solaris_evtchn_unbind,
-        .pending = &solaris_evtchn_pending,
-        .unmask = &solaris_evtchn_unmask,
-    },
-};
-
 /* Optionally flush file to disk and discard page cache */
 void discard_file_cache(xc_interface *xch, int fd, int flush) 
 {
@@ -324,8 +307,6 @@ static struct xc_osdep_ops *solaris_osdep_init(xc_interface *xch, enum xc_osdep_
     {
     case XC_OSDEP_PRIVCMD:
         return &solaris_privcmd_ops;
-    case XC_OSDEP_EVTCHN:
-        return &solaris_evtchn_ops;
     default:
         return NULL;
     }
diff --git a/tools/libxc/xenctrl_osdep_ENOSYS.c b/tools/libxc/xenctrl_osdep_ENOSYS.c
index dd59dcda21..5182532970 100644
--- a/tools/libxc/xenctrl_osdep_ENOSYS.c
+++ b/tools/libxc/xenctrl_osdep_ENOSYS.c
@@ -81,90 +81,6 @@ static struct xc_osdep_ops ENOSYS_privcmd_ops =
     }
 };
 
-static xc_osdep_handle ENOSYS_evtchn_open(xc_interface *xce)
-{
-    IPRINTF(xce, "ENOSYS_evtchn: opening handle %p\n", (void *)1);
-    return (xc_osdep_handle)2; /*dummy*/
-}
-
-static int ENOSYS_evtchn_close(xc_interface *xce, xc_osdep_handle h)
-{
-    IPRINTF(xce, "ENOSYS_evtchn: closing handle %lx\n", h);
-    return 0;
-}
-
-static int ENOSYS_evtchn_fd(xc_interface *xce, xc_osdep_handle h)
-{
-    IPRINTF(xce, "ENOSYS_fd %lx fd\n", h);
-    return (int)h;
-}
-
-static int ENOSYS_evtchn_notify(xc_interface *xce, xc_osdep_handle h, evtchn_port_t port)
-{
-    IPRINTF(xce, "ENOSYS_evtchn %lx notify: %d\n", h, port);
-    return -ENOSYS;
-}
-
-static int ENOSYS_evtchn_bind_unbound_port(xc_interface *xce, xc_osdep_handle h, int domid)
-{
-    IPRINTF(xce, "ENOSYS_evtchn %lx bind_unbound_port: dom%d\n", h, domid);
-    return -ENOSYS;
-}
-
-
-static int ENOSYS_evtchn_bind_interdomain(xc_interface *xce, xc_osdep_handle h, int domid, evtchn_port_t remote_port)
-{
-    IPRINTF(xce, "ENOSYS_evtchn %lx bind_interdomain: dmo%d %d\n", h, domid, remote_port);
-    return -ENOSYS;
-}
-
-
-static int ENOSYS_evtchn_bind_virq(xc_interface *xce, xc_osdep_handle h, unsigned int virq)
-{
-    IPRINTF(xce, "ENOSYS_evtchn %lx bind_virq: %d\n", h, virq);
-    return -ENOSYS;
-}
-
-
-static int ENOSYS_evtchn_unbind(xc_interface *xce, xc_osdep_handle h, evtchn_port_t port)
-{
-    IPRINTF(xce, "ENOSYS_evtchn %lx unbind: %d\n", h, port);
-    return -ENOSYS;
-}
-
-
-static evtchn_port_or_error_t ENOSYS_evtchn_pending(xc_interface *xce, xc_osdep_handle h)
-{
-    IPRINTF(xce, "ENOSYS_evtchn %lx pending\n", h);
-    return -ENOSYS;
-}
-
-static int ENOSYS_evtchn_unmask(xc_interface *xce, xc_osdep_handle h, evtchn_port_t port)
-{
-    IPRINTF(xce, "ENOSYS_evtchn %lx unmask: %d\n", h, port);
-    return -ENOSYS;
-}
-
-static struct xc_osdep_ops ENOSYS_evtchn_ops = {
-    .open = &ENOSYS_evtchn_open,
-    .close = &ENOSYS_evtchn_close,
-
-    .u.evtchn = {
-        .fd = &ENOSYS_evtchn_fd,
-
-        .notify = &ENOSYS_evtchn_notify,
-
-        .bind_unbound_port = &ENOSYS_evtchn_bind_unbound_port,
-        .bind_interdomain = &ENOSYS_evtchn_bind_interdomain,
-        .bind_virq = &ENOSYS_evtchn_bind_virq,
-
-        .unbind = &ENOSYS_evtchn_unbind,
-
-        .pending = &ENOSYS_evtchn_pending,
-        .unmask = &ENOSYS_evtchn_unmask,
-    },
-};
-
 static struct xc_osdep_ops * ENOSYS_osdep_init(xc_interface *xch, enum xc_osdep_type type)
 {
     struct xc_osdep_ops *ops;
@@ -180,9 +96,6 @@ static struct xc_osdep_ops * ENOSYS_osdep_init(xc_interface *xch, enum xc_osdep_
     case XC_OSDEP_PRIVCMD:
         ops = &ENOSYS_privcmd_ops;
         break;
-    case XC_OSDEP_EVTCHN:
-        ops = &ENOSYS_evtchn_ops;
-        break;
     default:
         ops = NULL;
         break;
diff --git a/tools/ocaml/libs/eventchn/xeneventchn_stubs.c b/tools/ocaml/libs/eventchn/xeneventchn_stubs.c
index abefd6b73d..5939e7c52c 100644
--- a/tools/ocaml/libs/eventchn/xeneventchn_stubs.c
+++ b/tools/ocaml/libs/eventchn/xeneventchn_stubs.c
@@ -34,14 +34,14 @@
 #include <caml/callback.h>
 #include <caml/fail.h>
 
-#define _H(__h) ((xc_interface *)(__h))
+#define _H(__h) ((xc_evtchn *)(__h))
 
 CAMLprim value stub_eventchn_init(void)
 {
 	CAMLparam0();
 	CAMLlocal1(result);
 
-	xc_interface *xce = xc_evtchn_open(NULL, XC_OPENFLAG_NON_REENTRANT);
+	xc_evtchn *xce = xc_evtchn_open(NULL, XC_OPENFLAG_NON_REENTRANT);
 	if (xce == NULL)
 		caml_failwith("open failed");