kernel26-xen/patches-2.6.25-r1/1015-2.6.25-xen-fixup-xen.patch

Subject: Fix Xen build wrt. Xen files coming from mainline.
From: http://xenbits.xensource.com/linux-2.6.18-xen.hg (tip 517:d71965a78c20)
Patch-mainline: obsolete

Acked-by: jbeulich@novell.com

Index: head-2008-04-15/drivers/xen/Makefile
===================================================================
--- head-2008-04-15.orig/drivers/xen/Makefile	2008-04-15 09:41:09.000000000 +0200
+++ head-2008-04-15/drivers/xen/Makefile	2008-04-15 09:59:33.000000000 +0200
@@ -1,2 +1,23 @@
-obj-y	+= grant-table.o
+obj-y	+= core/
+obj-y	+= console/
+obj-y	+= evtchn/
 obj-y	+= xenbus/
+obj-y	+= char/
+
+obj-y	+= util.o
+obj-$(CONFIG_XEN_BALLOON)		+= balloon/
+obj-$(CONFIG_XEN_BLKDEV_BACKEND)	+= blkback/
+obj-$(CONFIG_XEN_BLKDEV_TAP)		+= blktap/
+obj-$(CONFIG_XEN_NETDEV_BACKEND)	+= netback/
+obj-$(CONFIG_XEN_TPMDEV_BACKEND)	+= tpmback/
+obj-$(CONFIG_XEN_BLKDEV_FRONTEND)	+= blkfront/
+obj-$(CONFIG_XEN_NETDEV_FRONTEND)	+= netfront/
+obj-$(CONFIG_XEN_PCIDEV_BACKEND)	+= pciback/
+obj-$(CONFIG_XEN_PCIDEV_FRONTEND)	+= pcifront/
+obj-$(CONFIG_XEN_FRAMEBUFFER)		+= fbfront/
+obj-$(CONFIG_XEN_KEYBOARD)		+= fbfront/
+obj-$(CONFIG_XEN_PRIVCMD)	+= privcmd/
+obj-$(CONFIG_XEN_GRANT_DEV)	+= gntdev/
+obj-$(CONFIG_XEN_NETDEV_ACCEL_SFC_UTIL)		+= sfc_netutil/
+obj-$(CONFIG_XEN_NETDEV_ACCEL_SFC_FRONTEND)	+= sfc_netfront/
+obj-$(CONFIG_XEN_NETDEV_ACCEL_SFC_BACKEND)	+= sfc_netback/
Index: head-2008-04-15/drivers/xen/xenbus/Makefile
===================================================================
--- head-2008-04-15.orig/drivers/xen/xenbus/Makefile	2008-04-15 09:41:09.000000000 +0200
+++ head-2008-04-15/drivers/xen/xenbus/Makefile	2008-04-15 09:59:33.000000000 +0200
@@ -1,7 +1,9 @@
-obj-y	+= xenbus.o
+obj-y += xenbus_client.o xenbus_comms.o xenbus_xs.o xenbus_probe.o
+obj-$(CONFIG_XEN_BACKEND) += xenbus_be.o
 
-xenbus-objs =
-xenbus-objs += xenbus_client.o
-xenbus-objs += xenbus_comms.o
-xenbus-objs += xenbus_xs.o
-xenbus-objs += xenbus_probe.o
+xenbus_be-objs =
+xenbus_be-objs += xenbus_backend_client.o
+
+xenbus-$(CONFIG_XEN_BACKEND) += xenbus_probe_backend.o
+obj-y += $(xenbus-y) $(xenbus-m)
+obj-$(CONFIG_XEN_XENBUS_DEV) += xenbus_dev.o
Index: head-2008-04-15/drivers/xen/xenbus/xenbus_client.c
===================================================================
--- head-2008-04-15.orig/drivers/xen/xenbus/xenbus_client.c	2008-04-15 09:41:09.000000000 +0200
+++ head-2008-04-15/drivers/xen/xenbus/xenbus_client.c	2008-04-15 09:59:33.000000000 +0200
@@ -4,23 +4,23 @@
  * frontend or the backend of that driver.
  *
  * Copyright (C) 2005 XenSource Ltd
- *
+ * 
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License version 2
  * as published by the Free Software Foundation; or, when distributed
  * separately from the Linux kernel or incorporated into other
  * software packages, subject to the following license:
- *
+ * 
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this source file (the "Software"), to deal in the Software without
  * restriction, including without limitation the rights to use, copy, modify,
  * merge, publish, distribute, sublicense, and/or sell copies of the Software,
  * and to permit persons to whom the Software is furnished to do so, subject to
  * the following conditions:
- *
+ * 
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
- *
+ * 
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
@@ -30,14 +30,18 @@
  * IN THE SOFTWARE.
  */
 
-#include <linux/types.h>
-#include <linux/vmalloc.h>
-#include <asm/xen/hypervisor.h>
-#include <xen/interface/xen.h>
-#include <xen/interface/event_channel.h>
-#include <xen/events.h>
-#include <xen/grant_table.h>
+#include <linux/slab.h>
+#include <xen/evtchn.h>
+#include <xen/gnttab.h>
 #include <xen/xenbus.h>
+#include <xen/driver_util.h>
+
+#ifdef HAVE_XEN_PLATFORM_COMPAT_H
+#include <xen/platform-compat.h>
+#endif
+
+#define DPRINTK(fmt, args...) \
+    pr_debug("xenbus_client (%s:%d) " fmt ".\n", __FUNCTION__, __LINE__, ##args)
 
 const char *xenbus_strstate(enum xenbus_state state)
 {
@@ -54,20 +58,6 @@ const char *xenbus_strstate(enum xenbus_
 }
 EXPORT_SYMBOL_GPL(xenbus_strstate);
 
-/**
- * xenbus_watch_path - register a watch
- * @dev: xenbus device
- * @path: path to watch
- * @watch: watch to register
- * @callback: callback to register
- *
- * Register a @watch on the given path, using the given xenbus_watch structure
- * for storage, and the given @callback function as the callback.  Return 0 on
- * success, or -errno on error.  On success, the given @path will be saved as
- * @watch->node, and remains the caller's to free.  On error, @watch->node will
- * be NULL, the device will switch to %XenbusStateClosing, and the error will
- * be saved in the store.
- */
 int xenbus_watch_path(struct xenbus_device *dev, const char *path,
 		      struct xenbus_watch *watch,
 		      void (*callback)(struct xenbus_watch *,
@@ -91,58 +81,26 @@ int xenbus_watch_path(struct xenbus_devi
 EXPORT_SYMBOL_GPL(xenbus_watch_path);
 
 
-/**
- * xenbus_watch_pathfmt - register a watch on a sprintf-formatted path
- * @dev: xenbus device
- * @watch: watch to register
- * @callback: callback to register
- * @pathfmt: format of path to watch
- *
- * Register a watch on the given @path, using the given xenbus_watch
- * structure for storage, and the given @callback function as the callback.
- * Return 0 on success, or -errno on error.  On success, the watched path
- * (@path/@path2) will be saved as @watch->node, and becomes the caller's to
- * kfree().  On error, watch->node will be NULL, so the caller has nothing to
- * free, the device will switch to %XenbusStateClosing, and the error will be
- * saved in the store.
- */
-int xenbus_watch_pathfmt(struct xenbus_device *dev,
-			 struct xenbus_watch *watch,
-			 void (*callback)(struct xenbus_watch *,
-					const char **, unsigned int),
-			 const char *pathfmt, ...)
+int xenbus_watch_path2(struct xenbus_device *dev, const char *path,
+		       const char *path2, struct xenbus_watch *watch,
+		       void (*callback)(struct xenbus_watch *,
+					const char **, unsigned int))
 {
 	int err;
-	va_list ap;
-	char *path;
-
-	va_start(ap, pathfmt);
-	path = kvasprintf(GFP_KERNEL, pathfmt, ap);
-	va_end(ap);
-
-	if (!path) {
+	char *state = kasprintf(GFP_KERNEL|__GFP_HIGH, "%s/%s", path, path2);
+	if (!state) {
 		xenbus_dev_fatal(dev, -ENOMEM, "allocating path for watch");
 		return -ENOMEM;
 	}
-	err = xenbus_watch_path(dev, path, watch, callback);
+	err = xenbus_watch_path(dev, state, watch, callback);
 
 	if (err)
-		kfree(path);
+		kfree(state);
 	return err;
 }
-EXPORT_SYMBOL_GPL(xenbus_watch_pathfmt);
+EXPORT_SYMBOL_GPL(xenbus_watch_path2);
 
 
-/**
- * xenbus_switch_state
- * @dev: xenbus device
- * @xbt: transaction handle
- * @state: new state
- *
- * Advertise in the store a change of the given driver to the given new_state.
- * Return 0 on success, or -errno on error.  On error, the device will switch
- * to XenbusStateClosing, and the error will be saved in the store.
- */
 int xenbus_switch_state(struct xenbus_device *dev, enum xenbus_state state)
 {
 	/* We check whether the state is currently set to the given value, and
@@ -201,13 +159,12 @@ static char *error_path(struct xenbus_de
 }
 
 
-static void xenbus_va_dev_error(struct xenbus_device *dev, int err,
-				const char *fmt, va_list ap)
+void _dev_error(struct xenbus_device *dev, int err, const char *fmt,
+		va_list ap)
 {
 	int ret;
 	unsigned int len;
-	char *printf_buffer = NULL;
-	char *path_buffer = NULL;
+	char *printf_buffer = NULL, *path_buffer = NULL;
 
 #define PRINTF_BUFFER_SIZE 4096
 	printf_buffer = kmalloc(PRINTF_BUFFER_SIZE, GFP_KERNEL);
@@ -224,74 +181,51 @@ static void xenbus_va_dev_error(struct x
 	path_buffer = error_path(dev);
 
 	if (path_buffer == NULL) {
-		dev_err(&dev->dev, "failed to write error node for %s (%s)\n",
+		printk("xenbus: failed to write error node for %s (%s)\n",
 		       dev->nodename, printf_buffer);
 		goto fail;
 	}
 
 	if (xenbus_write(XBT_NIL, path_buffer, "error", printf_buffer) != 0) {
-		dev_err(&dev->dev, "failed to write error node for %s (%s)\n",
+		printk("xenbus: failed to write error node for %s (%s)\n",
 		       dev->nodename, printf_buffer);
 		goto fail;
 	}
 
 fail:
-	kfree(printf_buffer);
-	kfree(path_buffer);
+	if (printf_buffer)
+		kfree(printf_buffer);
+	if (path_buffer)
+		kfree(path_buffer);
 }
 
 
-/**
- * xenbus_dev_error
- * @dev: xenbus device
- * @err: error to report
- * @fmt: error message format
- *
- * Report the given negative errno into the store, along with the given
- * formatted message.
- */
-void xenbus_dev_error(struct xenbus_device *dev, int err, const char *fmt, ...)
+void xenbus_dev_error(struct xenbus_device *dev, int err, const char *fmt,
+		      ...)
 {
 	va_list ap;
 
 	va_start(ap, fmt);
-	xenbus_va_dev_error(dev, err, fmt, ap);
+	_dev_error(dev, err, fmt, ap);
 	va_end(ap);
 }
 EXPORT_SYMBOL_GPL(xenbus_dev_error);
 
-/**
- * xenbus_dev_fatal
- * @dev: xenbus device
- * @err: error to report
- * @fmt: error message format
- *
- * Equivalent to xenbus_dev_error(dev, err, fmt, args), followed by
- * xenbus_switch_state(dev, NULL, XenbusStateClosing) to schedule an orderly
- * closedown of this driver and its peer.
- */
 
-void xenbus_dev_fatal(struct xenbus_device *dev, int err, const char *fmt, ...)
+void xenbus_dev_fatal(struct xenbus_device *dev, int err, const char *fmt,
+		      ...)
 {
 	va_list ap;
 
 	va_start(ap, fmt);
-	xenbus_va_dev_error(dev, err, fmt, ap);
+	_dev_error(dev, err, fmt, ap);
 	va_end(ap);
 
 	xenbus_switch_state(dev, XenbusStateClosing);
 }
 EXPORT_SYMBOL_GPL(xenbus_dev_fatal);
 
-/**
- * xenbus_grant_ring
- * @dev: xenbus device
- * @ring_mfn: mfn of ring to grant
-
- * Grant access to the given @ring_mfn to the peer of the given device.  Return
- * 0 on success, or -errno on error.  On error, the device will switch to
- * XenbusStateClosing, and the error will be saved in the store.
- */
+
 int xenbus_grant_ring(struct xenbus_device *dev, unsigned long ring_mfn)
 {
 	int err = gnttab_grant_foreign_access(dev->otherend_id, ring_mfn, 0);
@@ -302,18 +236,12 @@ int xenbus_grant_ring(struct xenbus_devi
 EXPORT_SYMBOL_GPL(xenbus_grant_ring);
 
 
-/**
- * Allocate an event channel for the given xenbus_device, assigning the newly
- * created local port to *port.  Return 0 on success, or -errno on error.  On
- * error, the device will switch to XenbusStateClosing, and the error will be
- * saved in the store.
- */
 int xenbus_alloc_evtchn(struct xenbus_device *dev, int *port)
 {
 	struct evtchn_alloc_unbound alloc_unbound;
 	int err;
 
-	alloc_unbound.dom = DOMID_SELF;
+	alloc_unbound.dom        = DOMID_SELF;
 	alloc_unbound.remote_dom = dev->otherend_id;
 
 	err = HYPERVISOR_event_channel_op(EVTCHNOP_alloc_unbound,
@@ -328,36 +256,6 @@ int xenbus_alloc_evtchn(struct xenbus_de
 EXPORT_SYMBOL_GPL(xenbus_alloc_evtchn);
 
 
-/**
- * Bind to an existing interdomain event channel in another domain. Returns 0
- * on success and stores the local port in *port. On error, returns -errno,
- * switches the device to XenbusStateClosing, and saves the error in XenStore.
- */
-int xenbus_bind_evtchn(struct xenbus_device *dev, int remote_port, int *port)
-{
-	struct evtchn_bind_interdomain bind_interdomain;
-	int err;
-
-	bind_interdomain.remote_dom = dev->otherend_id;
-	bind_interdomain.remote_port = remote_port;
-
-	err = HYPERVISOR_event_channel_op(EVTCHNOP_bind_interdomain,
-					  &bind_interdomain);
-	if (err)
-		xenbus_dev_fatal(dev, err,
-				 "binding to event channel %d from domain %d",
-				 remote_port, dev->otherend_id);
-	else
-		*port = bind_interdomain.local_port;
-
-	return err;
-}
-EXPORT_SYMBOL_GPL(xenbus_bind_evtchn);
-
-
-/**
- * Free an existing event channel. Returns 0 on success or -errno on error.
- */
 int xenbus_free_evtchn(struct xenbus_device *dev, int port)
 {
 	struct evtchn_close close;
@@ -374,189 +272,6 @@ int xenbus_free_evtchn(struct xenbus_dev
 EXPORT_SYMBOL_GPL(xenbus_free_evtchn);
 
 
-/**
- * xenbus_map_ring_valloc
- * @dev: xenbus device
- * @gnt_ref: grant reference
- * @vaddr: pointer to address to be filled out by mapping
- *
- * Based on Rusty Russell's skeleton driver's map_page.
- * Map a page of memory into this domain from another domain's grant table.
- * xenbus_map_ring_valloc allocates a page of virtual address space, maps the
- * page to that address, and sets *vaddr to that address.
- * Returns 0 on success, and GNTST_* (see xen/include/interface/grant_table.h)
- * or -ENOMEM on error. If an error is returned, device will switch to
- * XenbusStateClosing and the error message will be saved in XenStore.
- */
-int xenbus_map_ring_valloc(struct xenbus_device *dev, int gnt_ref, void **vaddr)
-{
-	struct gnttab_map_grant_ref op = {
-		.flags = GNTMAP_host_map,
-		.ref   = gnt_ref,
-		.dom   = dev->otherend_id,
-	};
-	struct vm_struct *area;
-
-	*vaddr = NULL;
-
-	area = alloc_vm_area(PAGE_SIZE);
-	if (!area)
-		return -ENOMEM;
-
-	op.host_addr = (unsigned long)area->addr;
-
-	if (HYPERVISOR_grant_table_op(GNTTABOP_map_grant_ref, &op, 1))
-		BUG();
-
-	if (op.status != GNTST_okay) {
-		free_vm_area(area);
-		xenbus_dev_fatal(dev, op.status,
-				 "mapping in shared page %d from domain %d",
-				 gnt_ref, dev->otherend_id);
-		return op.status;
-	}
-
-	/* Stuff the handle in an unused field */
-	area->phys_addr = (unsigned long)op.handle;
-
-	*vaddr = area->addr;
-	return 0;
-}
-EXPORT_SYMBOL_GPL(xenbus_map_ring_valloc);
-
-
-/**
- * xenbus_map_ring
- * @dev: xenbus device
- * @gnt_ref: grant reference
- * @handle: pointer to grant handle to be filled
- * @vaddr: address to be mapped to
- *
- * Map a page of memory into this domain from another domain's grant table.
- * xenbus_map_ring does not allocate the virtual address space (you must do
- * this yourself!). It only maps in the page to the specified address.
- * Returns 0 on success, and GNTST_* (see xen/include/interface/grant_table.h)
- * or -ENOMEM on error. If an error is returned, device will switch to
- * XenbusStateClosing and the error message will be saved in XenStore.
- */
-int xenbus_map_ring(struct xenbus_device *dev, int gnt_ref,
-		    grant_handle_t *handle, void *vaddr)
-{
-	struct gnttab_map_grant_ref op = {
-		.host_addr = (unsigned long)vaddr,
-		.flags     = GNTMAP_host_map,
-		.ref       = gnt_ref,
-		.dom       = dev->otherend_id,
-	};
-
-	if (HYPERVISOR_grant_table_op(GNTTABOP_map_grant_ref, &op, 1))
-		BUG();
-
-	if (op.status != GNTST_okay) {
-		xenbus_dev_fatal(dev, op.status,
-				 "mapping in shared page %d from domain %d",
-				 gnt_ref, dev->otherend_id);
-	} else
-		*handle = op.handle;
-
-	return op.status;
-}
-EXPORT_SYMBOL_GPL(xenbus_map_ring);
-
-
-/**
- * xenbus_unmap_ring_vfree
- * @dev: xenbus device
- * @vaddr: addr to unmap
- *
- * Based on Rusty Russell's skeleton driver's unmap_page.
- * Unmap a page of memory in this domain that was imported from another domain.
- * Use xenbus_unmap_ring_vfree if you mapped in your memory with
- * xenbus_map_ring_valloc (it will free the virtual address space).
- * Returns 0 on success and returns GNTST_* on error
- * (see xen/include/interface/grant_table.h).
- */
-int xenbus_unmap_ring_vfree(struct xenbus_device *dev, void *vaddr)
-{
-	struct vm_struct *area;
-	struct gnttab_unmap_grant_ref op = {
-		.host_addr = (unsigned long)vaddr,
-	};
-
-	/* It'd be nice if linux/vmalloc.h provided a find_vm_area(void *addr)
-	 * method so that we don't have to muck with vmalloc internals here.
-	 * We could force the user to hang on to their struct vm_struct from
-	 * xenbus_map_ring_valloc, but these 6 lines considerably simplify
-	 * this API.
-	 */
-	read_lock(&vmlist_lock);
-	for (area = vmlist; area != NULL; area = area->next) {
-		if (area->addr == vaddr)
-			break;
-	}
-	read_unlock(&vmlist_lock);
-
-	if (!area) {
-		xenbus_dev_error(dev, -ENOENT,
-				 "can't find mapped virtual address %p", vaddr);
-		return GNTST_bad_virt_addr;
-	}
-
-	op.handle = (grant_handle_t)area->phys_addr;
-
-	if (HYPERVISOR_grant_table_op(GNTTABOP_unmap_grant_ref, &op, 1))
-		BUG();
-
-	if (op.status == GNTST_okay)
-		free_vm_area(area);
-	else
-		xenbus_dev_error(dev, op.status,
-				 "unmapping page at handle %d error %d",
-				 (int16_t)area->phys_addr, op.status);
-
-	return op.status;
-}
-EXPORT_SYMBOL_GPL(xenbus_unmap_ring_vfree);
-
-
-/**
- * xenbus_unmap_ring
- * @dev: xenbus device
- * @handle: grant handle
- * @vaddr: addr to unmap
- *
- * Unmap a page of memory in this domain that was imported from another domain.
- * Returns 0 on success and returns GNTST_* on error
- * (see xen/include/interface/grant_table.h).
- */
-int xenbus_unmap_ring(struct xenbus_device *dev,
-		      grant_handle_t handle, void *vaddr)
-{
-	struct gnttab_unmap_grant_ref op = {
-		.host_addr = (unsigned long)vaddr,
-		.handle    = handle,
-	};
-
-	if (HYPERVISOR_grant_table_op(GNTTABOP_unmap_grant_ref, &op, 1))
-		BUG();
-
-	if (op.status != GNTST_okay)
-		xenbus_dev_error(dev, op.status,
-				 "unmapping page at handle %d error %d",
-				 handle, op.status);
-
-	return op.status;
-}
-EXPORT_SYMBOL_GPL(xenbus_unmap_ring);
-
-
-/**
- * xenbus_read_driver_state
- * @path: path for driver
- *
- * Return the state of the driver rooted at the given store path, or
- * XenbusStateUnknown if no state can be read.
- */
 enum xenbus_state xenbus_read_driver_state(const char *path)
 {
 	enum xenbus_state result;
Index: head-2008-04-15/drivers/xen/xenbus/xenbus_comms.c
===================================================================
--- head-2008-04-15.orig/drivers/xen/xenbus/xenbus_comms.c	2008-04-15 09:41:09.000000000 +0200
+++ head-2008-04-15/drivers/xen/xenbus/xenbus_comms.c	2008-04-15 09:59:33.000000000 +0200
@@ -4,23 +4,23 @@
  * Low level code to talks to Xen Store: ringbuffer and event channel.
  *
  * Copyright (C) 2005 Rusty Russell, IBM Corporation
- *
+ * 
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License version 2
  * as published by the Free Software Foundation; or, when distributed
  * separately from the Linux kernel or incorporated into other
  * software packages, subject to the following license:
- *
+ * 
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this source file (the "Software"), to deal in the Software without
  * restriction, including without limitation the rights to use, copy, modify,
  * merge, publish, distribute, sublicense, and/or sell copies of the Software,
  * and to permit persons to whom the Software is furnished to do so, subject to
  * the following conditions:
- *
+ * 
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
- *
+ * 
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
@@ -34,19 +34,28 @@
 #include <linux/interrupt.h>
 #include <linux/sched.h>
 #include <linux/err.h>
+#include <linux/ptrace.h>
+#include <linux/workqueue.h>
+#include <xen/evtchn.h>
 #include <xen/xenbus.h>
-#include <asm/xen/hypervisor.h>
-#include <xen/events.h>
-#include <xen/page.h>
+
+#include <asm/hypervisor.h>
+
 #include "xenbus_comms.h"
 
+#ifdef HAVE_XEN_PLATFORM_COMPAT_H
+#include <xen/platform-compat.h>
+#endif
+
 static int xenbus_irq;
 
-static DECLARE_WORK(probe_work, xenbus_probe);
+extern void xenbus_probe(void *);
+extern int xenstored_ready;
+static DECLARE_WORK(probe_work, xenbus_probe, NULL);
 
 static DECLARE_WAIT_QUEUE_HEAD(xb_waitq);
 
-static irqreturn_t wake_waiting(int irq, void *unused)
+static irqreturn_t wake_waiting(int irq, void *unused, struct pt_regs *regs)
 {
 	if (unlikely(xenstored_ready == 0)) {
 		xenstored_ready = 1;
@@ -82,13 +91,6 @@ static const void *get_input_chunk(XENST
 	return buf + MASK_XENSTORE_IDX(cons);
 }
 
-/**
- * xb_write - low level write
- * @data: buffer to send
- * @len: length of buffer
- *
- * Returns 0 on success, error otherwise.
- */
 int xb_write(const void *data, unsigned len)
 {
 	struct xenstore_domain_interface *intf = xen_store_interface;
@@ -197,9 +199,7 @@ int xb_read(void *data, unsigned len)
 	return 0;
 }
 
-/**
- * xb_init_comms - Set up interrupt handler off store event channel.
- */
+/* Set up interrupt handler off store event channel. */
 int xb_init_comms(void)
 {
 	struct xenstore_domain_interface *intf = xen_store_interface;
@@ -219,7 +219,7 @@ int xb_init_comms(void)
 	if (xenbus_irq)
 		unbind_from_irqhandler(xenbus_irq, &xb_waitq);
 
-	err = bind_evtchn_to_irqhandler(
+	err = bind_caller_port_to_irqhandler(
 		xen_store_evtchn, wake_waiting,
 		0, "xenbus", &xb_waitq);
 	if (err <= 0) {
Index: head-2008-04-15/drivers/xen/xenbus/xenbus_comms.h
===================================================================
--- head-2008-04-15.orig/drivers/xen/xenbus/xenbus_comms.h	2008-04-15 09:41:09.000000000 +0200
+++ head-2008-04-15/drivers/xen/xenbus/xenbus_comms.h	2008-04-15 09:59:33.000000000 +0200
@@ -1,6 +1,6 @@
 /*
  * Private include for xenbus communications.
- *
+ * 
  * Copyright (C) 2005 Rusty Russell, IBM Corporation
  *
  * This program is free software; you can redistribute it and/or
@@ -8,17 +8,17 @@
  * as published by the Free Software Foundation; or, when distributed
  * separately from the Linux kernel or incorporated into other
  * software packages, subject to the following license:
- *
+ * 
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this source file (the "Software"), to deal in the Software without
  * restriction, including without limitation the rights to use, copy, modify,
  * merge, publish, distribute, sublicense, and/or sell copies of the Software,
  * and to permit persons to whom the Software is furnished to do so, subject to
  * the following conditions:
- *
+ * 
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
- *
+ * 
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
Index: head-2008-04-15/drivers/xen/xenbus/xenbus_probe.c
===================================================================
--- head-2008-04-15.orig/drivers/xen/xenbus/xenbus_probe.c	2008-04-15 09:41:09.000000000 +0200
+++ head-2008-04-15/drivers/xen/xenbus/xenbus_probe.c	2008-04-15 09:59:33.000000000 +0200
@@ -4,23 +4,24 @@
  * Copyright (C) 2005 Rusty Russell, IBM Corporation
  * Copyright (C) 2005 Mike Wray, Hewlett-Packard
  * Copyright (C) 2005, 2006 XenSource Ltd
- *
+ * Copyright (C) 2007 Solarflare Communications, Inc.
+ * 
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License version 2
  * as published by the Free Software Foundation; or, when distributed
  * separately from the Linux kernel or incorporated into other
  * software packages, subject to the following license:
- *
+ * 
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this source file (the "Software"), to deal in the Software without
  * restriction, including without limitation the rights to use, copy, modify,
  * merge, publish, distribute, sublicense, and/or sell copies of the Software,
  * and to permit persons to whom the Software is furnished to do so, subject to
  * the following conditions:
- *
+ * 
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
- *
+ * 
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
@@ -32,7 +33,7 @@
 
 #define DPRINTK(fmt, args...)				\
 	pr_debug("xenbus_probe (%s:%d) " fmt ".\n",	\
-		 __func__, __LINE__, ##args)
+		 __FUNCTION__, __LINE__, ##args)
 
 #include <linux/kernel.h>
 #include <linux/err.h>
@@ -41,24 +42,35 @@
 #include <linux/fcntl.h>
 #include <linux/mm.h>
 #include <linux/notifier.h>
-#include <linux/kthread.h>
 #include <linux/mutex.h>
-#include <linux/io.h>
+#include <linux/module.h>
 
+#include <asm/io.h>
 #include <asm/page.h>
+#include <asm/maddr.h>
 #include <asm/pgtable.h>
-#include <asm/xen/hypervisor.h>
+#include <asm/hypervisor.h>
 #include <xen/xenbus.h>
-#include <xen/events.h>
-#include <xen/page.h>
+#include <xen/xen_proc.h>
+#include <xen/evtchn.h>
+#include <xen/features.h>
+#ifdef MODULE
+#include <xen/hvm.h>
+#endif
 
 #include "xenbus_comms.h"
 #include "xenbus_probe.h"
 
+#ifdef HAVE_XEN_PLATFORM_COMPAT_H
+#include <xen/platform-compat.h>
+#endif
+
 int xen_store_evtchn;
 struct xenstore_domain_interface *xen_store_interface;
 static unsigned long xen_store_mfn;
 
+extern struct mutex xenwatch_mutex;
+
 static BLOCKING_NOTIFIER_HEAD(xenstore_chain);
 
 static void wait_for_devices(struct xenbus_driver *xendrv);
@@ -156,6 +168,30 @@ static int read_backend_details(struct x
 	return read_otherend_details(xendev, "backend-id", "backend");
 }
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+static int xenbus_uevent_frontend(struct device *dev, char **envp,
+				  int num_envp, char *buffer, int buffer_size)
+{
+	struct xenbus_device *xdev;
+	int length = 0, i = 0;
+
+	if (dev == NULL)
+		return -ENODEV;
+	xdev = to_xenbus_device(dev);
+	if (xdev == NULL)
+		return -ENODEV;
+
+	/* stuff we want to pass to /sbin/hotplug */
+	add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
+		       "XENBUS_TYPE=%s", xdev->devicetype);
+	add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
+		       "XENBUS_PATH=%s", xdev->nodename);
+	add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
+		       "MODALIAS=xen:%s", xdev->devicetype);
+
+	return 0;
+}
+#endif
 
 /* Bus type for frontend drivers. */
 static struct xen_bus_type xenbus_frontend = {
@@ -163,12 +199,19 @@ static struct xen_bus_type xenbus_fronte
 	.levels = 2, 		/* device/type/<id> */
 	.get_bus_id = frontend_bus_id,
 	.probe = xenbus_probe_frontend,
+	.error = -ENODEV,
 	.bus = {
 		.name     = "xen",
 		.match    = xenbus_match,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
 		.probe    = xenbus_dev_probe,
 		.remove   = xenbus_dev_remove,
 		.shutdown = xenbus_dev_shutdown,
+		.uevent   = xenbus_uevent_frontend,
+#endif
+	},
+	.dev = {
+		.bus_id = "xen",
 	},
 };
 
@@ -185,17 +228,16 @@ static void otherend_changed(struct xenb
 	if (!dev->otherend ||
 	    strncmp(dev->otherend, vec[XS_WATCH_PATH],
 		    strlen(dev->otherend))) {
-		dev_dbg(&dev->dev, "Ignoring watch at %s\n",
-			vec[XS_WATCH_PATH]);
+		DPRINTK("Ignoring watch at %s", vec[XS_WATCH_PATH]);
 		return;
 	}
 
 	state = xenbus_read_driver_state(dev->otherend);
 
-	dev_dbg(&dev->dev, "state is %d, (%s), %s, %s\n",
-		state, xenbus_strstate(state), dev->otherend_watch.node,
-		vec[XS_WATCH_PATH]);
+	DPRINTK("state is %d (%s), %s, %s", state, xenbus_strstate(state),
+		dev->otherend_watch.node, vec[XS_WATCH_PATH]);
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
 	/*
 	 * Ignore xenbus transitions during shutdown. This prevents us doing
 	 * work that can fail e.g., when the rootfs is gone.
@@ -209,6 +251,7 @@ static void otherend_changed(struct xenb
 			xenbus_frontend_closed(dev);
 		return;
 	}
+#endif
 
 	if (drv->otherend_changed)
 		drv->otherend_changed(dev, state);
@@ -228,8 +271,8 @@ static int talk_to_otherend(struct xenbu
 
 static int watch_otherend(struct xenbus_device *dev)
 {
-	return xenbus_watch_pathfmt(dev, &dev->otherend_watch, otherend_changed,
-				    "%s/%s", dev->otherend, "state");
+	return xenbus_watch_path2(dev, dev->otherend, "state",
+				  &dev->otherend_watch, otherend_changed);
 }
 
 
@@ -255,8 +298,9 @@ int xenbus_dev_probe(struct device *_dev
 
 	err = talk_to_otherend(dev);
 	if (err) {
-		dev_warn(&dev->dev, "talk_to_otherend on %s failed.\n",
-			 dev->nodename);
+		printk(KERN_WARNING
+		       "xenbus_probe: talk_to_otherend on %s failed.\n",
+		       dev->nodename);
 		return err;
 	}
 
@@ -266,7 +310,8 @@ int xenbus_dev_probe(struct device *_dev
 
 	err = watch_otherend(dev);
 	if (err) {
-		dev_warn(&dev->dev, "watch_otherend on %s failed.\n",
+		printk(KERN_WARNING
+		       "xenbus_probe: watch_otherend on %s failed.\n",
 		       dev->nodename);
 		return err;
 	}
@@ -304,41 +349,50 @@ static void xenbus_dev_shutdown(struct d
 
 	get_device(&dev->dev);
 	if (dev->state != XenbusStateConnected) {
-		printk(KERN_INFO "%s: %s: %s != Connected, skipping\n", __func__,
+		printk("%s: %s: %s != Connected, skipping\n", __FUNCTION__,
 		       dev->nodename, xenbus_strstate(dev->state));
 		goto out;
 	}
 	xenbus_switch_state(dev, XenbusStateClosing);
 	timeout = wait_for_completion_timeout(&dev->down, timeout);
 	if (!timeout)
-		printk(KERN_INFO "%s: %s timeout closing device\n",
-		       __func__, dev->nodename);
+		printk("%s: %s timeout closing device\n", __FUNCTION__, dev->nodename);
  out:
 	put_device(&dev->dev);
 }
 
 int xenbus_register_driver_common(struct xenbus_driver *drv,
-				  struct xen_bus_type *bus,
-				  struct module *owner,
-				  const char *mod_name)
+				  struct xen_bus_type *bus)
 {
+	int ret;
+
+	if (bus->error)
+		return bus->error;
+
 	drv->driver.name = drv->name;
 	drv->driver.bus = &bus->bus;
-	drv->driver.owner = owner;
-	drv->driver.mod_name = mod_name;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,10)
+	drv->driver.owner = drv->owner;
+#endif
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,16)
+	drv->driver.probe = xenbus_dev_probe;
+	drv->driver.remove = xenbus_dev_remove;
+	drv->driver.shutdown = xenbus_dev_shutdown;
+#endif
 
-	return driver_register(&drv->driver);
+	mutex_lock(&xenwatch_mutex);
+	ret = driver_register(&drv->driver);
+	mutex_unlock(&xenwatch_mutex);
+	return ret;
 }
 
-int __xenbus_register_frontend(struct xenbus_driver *drv,
-			       struct module *owner, const char *mod_name)
+int xenbus_register_frontend(struct xenbus_driver *drv)
 {
 	int ret;
 
 	drv->read_otherend_details = read_backend_details;
 
-	ret = xenbus_register_driver_common(drv, &xenbus_frontend,
-					    owner, mod_name);
+	ret = xenbus_register_driver_common(drv, &xenbus_frontend);
 	if (ret)
 		return ret;
 
@@ -347,7 +401,7 @@ int __xenbus_register_frontend(struct xe
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(__xenbus_register_frontend);
+EXPORT_SYMBOL_GPL(xenbus_register_frontend);
 
 void xenbus_unregister_driver(struct xenbus_driver *drv)
 {
@@ -425,14 +479,20 @@ static void xenbus_dev_release(struct de
 }
 
 static ssize_t xendev_show_nodename(struct device *dev,
-				    struct device_attribute *attr, char *buf)
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,13)
+				    struct device_attribute *attr,
+#endif
+				    char *buf)
 {
 	return sprintf(buf, "%s\n", to_xenbus_device(dev)->nodename);
 }
 DEVICE_ATTR(nodename, S_IRUSR | S_IRGRP | S_IROTH, xendev_show_nodename, NULL);
 
 static ssize_t xendev_show_devtype(struct device *dev,
-				   struct device_attribute *attr, char *buf)
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,13)
+				   struct device_attribute *attr,
+#endif
+				   char *buf)
 {
 	return sprintf(buf, "%s\n", to_xenbus_device(dev)->devicetype);
 }
@@ -450,6 +510,9 @@ int xenbus_probe_node(struct xen_bus_typ
 
 	enum xenbus_state state = xenbus_read_driver_state(nodename);
 
+	if (bus->error)
+		return bus->error;
+
 	if (state != XenbusStateInitialising) {
 		/* Device is not new, so ignore it.  This can happen if a
 		   device is going away after switching to Closed.  */
@@ -474,6 +537,7 @@ int xenbus_probe_node(struct xen_bus_typ
 	xendev->devicetype = tmpstring;
 	init_completion(&xendev->down);
 
+	xendev->dev.parent = &bus->dev;
 	xendev->dev.bus = &bus->bus;
 	xendev->dev.release = xenbus_dev_release;
 
@@ -488,16 +552,15 @@ int xenbus_probe_node(struct xen_bus_typ
 
 	err = device_create_file(&xendev->dev, &dev_attr_nodename);
 	if (err)
-		goto fail_unregister;
-
+		goto unregister;
 	err = device_create_file(&xendev->dev, &dev_attr_devtype);
 	if (err)
-		goto fail_remove_file;
+		goto unregister;
 
 	return 0;
-fail_remove_file:
+unregister:
 	device_remove_file(&xendev->dev, &dev_attr_nodename);
-fail_unregister:
+	device_remove_file(&xendev->dev, &dev_attr_devtype);
 	device_unregister(&xendev->dev);
 fail:
 	kfree(xendev);
@@ -510,8 +573,7 @@ static int xenbus_probe_frontend(const c
 	char *nodename;
 	int err;
 
-	nodename = kasprintf(GFP_KERNEL, "%s/%s/%s",
-			     xenbus_frontend.root, type, name);
+	nodename = kasprintf(GFP_KERNEL, "%s/%s/%s", xenbus_frontend.root, type, name);
 	if (!nodename)
 		return -ENOMEM;
 
@@ -548,6 +610,9 @@ int xenbus_probe_devices(struct xen_bus_
 	char **dir;
 	unsigned int i, dir_n;
 
+	if (bus->error)
+		return bus->error;
+
 	dir = xenbus_directory(XBT_NIL, bus->root, "", &dir_n);
 	if (IS_ERR(dir))
 		return PTR_ERR(dir);
@@ -584,15 +649,15 @@ static int strsep_len(const char *str, c
 	return (len == 0) ? i : -ERANGE;
 }
 
-void xenbus_dev_changed(const char *node, struct xen_bus_type *bus)
+void dev_changed(const char *node, struct xen_bus_type *bus)
 {
 	int exists, rootlen;
 	struct xenbus_device *dev;
 	char type[BUS_ID_SIZE];
 	const char *p, *root;
 
-	if (char_count(node, '/') < 2)
-		return;
+	if (bus->error || char_count(node, '/') < 2)
+ 		return;
 
 	exists = xenbus_exists(XBT_NIL, node, "");
 	if (!exists) {
@@ -626,7 +691,7 @@ static void frontend_changed(struct xenb
 {
 	DPRINTK("");
 
-	xenbus_dev_changed(vec[XS_WATCH_PATH], &xenbus_frontend);
+	dev_changed(vec[XS_WATCH_PATH], &xenbus_frontend);
 }
 
 /* We watch for devices appearing and vanishing. */
@@ -702,9 +767,9 @@ static int resume_dev(struct device *dev
 
 	if (drv->resume) {
 		err = drv->resume(xdev);
-		if (err) {
+		if (err) { 
 			printk(KERN_WARNING
-			       "xenbus: resume %s failed: %i\n",
+			       "xenbus: resume %s failed: %i\n", 
 			       dev->bus_id, err);
 			return err;
 		}
@@ -725,7 +790,8 @@ void xenbus_suspend(void)
 {
 	DPRINTK("");
 
-	bus_for_each_dev(&xenbus_frontend.bus, NULL, NULL, suspend_dev);
+	if (!xenbus_frontend.error)
+		bus_for_each_dev(&xenbus_frontend.bus, NULL, NULL, suspend_dev);
 	xenbus_backend_suspend(suspend_dev);
 	xs_suspend();
 }
@@ -735,7 +801,8 @@ void xenbus_resume(void)
 {
 	xb_init_comms();
 	xs_resume();
-	bus_for_each_dev(&xenbus_frontend.bus, NULL, NULL, resume_dev);
+	if (!xenbus_frontend.error)
+		bus_for_each_dev(&xenbus_frontend.bus, NULL, NULL, resume_dev);
 	xenbus_backend_resume(resume_dev);
 }
 EXPORT_SYMBOL_GPL(xenbus_resume);
@@ -743,7 +810,8 @@ EXPORT_SYMBOL_GPL(xenbus_resume);
 void xenbus_suspend_cancel(void)
 {
 	xs_suspend_cancel();
-	bus_for_each_dev(&xenbus_frontend.bus, NULL, NULL, suspend_cancel_dev);
+	if (!xenbus_frontend.error)
+		bus_for_each_dev(&xenbus_frontend.bus, NULL, NULL, suspend_cancel_dev);
 	xenbus_backend_resume(suspend_cancel_dev);
 }
 EXPORT_SYMBOL_GPL(xenbus_suspend_cancel);
@@ -771,7 +839,8 @@ void unregister_xenstore_notifier(struct
 }
 EXPORT_SYMBOL_GPL(unregister_xenstore_notifier);
 
-void xenbus_probe(struct work_struct *unused)
+
+void xenbus_probe(void *unused)
 {
 	BUG_ON((xenstored_ready <= 0));
 
@@ -784,68 +853,177 @@ void xenbus_probe(struct work_struct *un
 	blocking_notifier_call_chain(&xenstore_chain, 0, NULL);
 }
 
-static int __init xenbus_probe_init(void)
+
+#if defined(CONFIG_PROC_FS) && defined(CONFIG_XEN_PRIVILEGED_GUEST)
+static struct file_operations xsd_kva_fops;
+static struct proc_dir_entry *xsd_kva_intf;
+static struct proc_dir_entry *xsd_port_intf;
+
+static int xsd_kva_mmap(struct file *file, struct vm_area_struct *vma)
+{
+	size_t size = vma->vm_end - vma->vm_start;
+
+	if ((size > PAGE_SIZE) || (vma->vm_pgoff != 0))
+		return -EINVAL;
+
+	if (remap_pfn_range(vma, vma->vm_start, mfn_to_pfn(xen_store_mfn),
+			    size, vma->vm_page_prot))
+		return -EAGAIN;
+
+	return 0;
+}
+
+static int xsd_kva_read(char *page, char **start, off_t off,
+			int count, int *eof, void *data)
+{
+	int len;
+
+	len  = sprintf(page, "0x%p", xen_store_interface);
+	*eof = 1;
+	return len;
+}
+
+static int xsd_port_read(char *page, char **start, off_t off,
+			 int count, int *eof, void *data)
+{
+	int len;
+
+	len  = sprintf(page, "%d", xen_store_evtchn);
+	*eof = 1;
+	return len;
+}
+#endif
+
+static int xenbus_probe_init(void)
 {
 	int err = 0;
+	unsigned long page = 0;
 
 	DPRINTK("");
 
-	err = -ENODEV;
 	if (!is_running_on_xen())
-		goto out_error;
+		return -ENODEV;
 
 	/* Register ourselves with the kernel bus subsystem */
-	err = bus_register(&xenbus_frontend.bus);
-	if (err)
-		goto out_error;
-
-	err = xenbus_backend_bus_register();
-	if (err)
-		goto out_unreg_front;
+	xenbus_frontend.error = bus_register(&xenbus_frontend.bus);
+	if (xenbus_frontend.error)
+		printk(KERN_WARNING
+		       "XENBUS: Error registering frontend bus: %i\n",
+		       xenbus_frontend.error);
+	xenbus_backend_bus_register();
 
 	/*
 	 * Domain0 doesn't have a store_evtchn or store_mfn yet.
 	 */
 	if (is_initial_xendomain()) {
-		/* dom0 not yet supported */
+		struct evtchn_alloc_unbound alloc_unbound;
+
+		/* Allocate page. */
+		page = get_zeroed_page(GFP_KERNEL);
+		if (!page)
+			return -ENOMEM;
+
+		xen_store_mfn = xen_start_info->store_mfn =
+			pfn_to_mfn(virt_to_phys((void *)page) >>
+				   PAGE_SHIFT);
+
+		/* Next allocate a local port which xenstored can bind to */
+		alloc_unbound.dom        = DOMID_SELF;
+		alloc_unbound.remote_dom = 0;
+
+		err = HYPERVISOR_event_channel_op(EVTCHNOP_alloc_unbound,
+						  &alloc_unbound);
+		if (err == -ENOSYS)
+			goto err;
+		BUG_ON(err);
+		xen_store_evtchn = xen_start_info->store_evtchn =
+			alloc_unbound.port;
+
+#if defined(CONFIG_PROC_FS) && defined(CONFIG_XEN_PRIVILEGED_GUEST)
+		/* And finally publish the above info in /proc/xen */
+		xsd_kva_intf = create_xen_proc_entry("xsd_kva", 0600);
+		if (xsd_kva_intf) {
+			memcpy(&xsd_kva_fops, xsd_kva_intf->proc_fops,
+			       sizeof(xsd_kva_fops));
+			xsd_kva_fops.mmap = xsd_kva_mmap;
+			xsd_kva_intf->proc_fops = &xsd_kva_fops;
+			xsd_kva_intf->read_proc = xsd_kva_read;
+		}
+		xsd_port_intf = create_xen_proc_entry("xsd_port", 0400);
+		if (xsd_port_intf)
+			xsd_port_intf->read_proc = xsd_port_read;
+#endif
+		xen_store_interface = mfn_to_virt(xen_store_mfn);
 	} else {
 		xenstored_ready = 1;
+#ifdef CONFIG_XEN
 		xen_store_evtchn = xen_start_info->store_evtchn;
 		xen_store_mfn = xen_start_info->store_mfn;
+		xen_store_interface = mfn_to_virt(xen_store_mfn);
+#else
+		xen_store_evtchn = hvm_get_parameter(HVM_PARAM_STORE_EVTCHN);
+		xen_store_mfn = hvm_get_parameter(HVM_PARAM_STORE_PFN);
+		xen_store_interface = ioremap(xen_store_mfn << PAGE_SHIFT,
+					      PAGE_SIZE);
+#endif
 	}
-	xen_store_interface = mfn_to_virt(xen_store_mfn);
+
+
+	xenbus_dev_init();
 
 	/* Initialize the interface to xenstore. */
 	err = xs_init();
 	if (err) {
 		printk(KERN_WARNING
 		       "XENBUS: Error initializing xenstore comms: %i\n", err);
-		goto out_unreg_back;
+		goto err;
+	}
+
+	/* Register ourselves with the kernel device subsystem */
+	if (!xenbus_frontend.error) {
+		xenbus_frontend.error = device_register(&xenbus_frontend.dev);
+		if (xenbus_frontend.error) {
+			bus_unregister(&xenbus_frontend.bus);
+			printk(KERN_WARNING
+			       "XENBUS: Error registering frontend device: %i\n",
+			       xenbus_frontend.error);
+		}
 	}
+	xenbus_backend_device_register();
 
 	if (!is_initial_xendomain())
 		xenbus_probe(NULL);
 
 	return 0;
 
-  out_unreg_back:
-	xenbus_backend_bus_unregister();
+ err:
+	if (page)
+		free_page(page);
 
-  out_unreg_front:
-	bus_unregister(&xenbus_frontend.bus);
+	/*
+	 * Do not unregister the xenbus front/backend buses here. The buses
+	 * must exist because front/backend drivers will use them when they are
+	 * registered.
+	 */
 
-  out_error:
 	return err;
 }
 
+#ifdef CONFIG_XEN
 postcore_initcall(xenbus_probe_init);
-
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("Dual BSD/GPL");
+#else
+int xenbus_init(void)
+{
+	return xenbus_probe_init();
+}
+#endif
 
 static int is_disconnected_device(struct device *dev, void *data)
 {
 	struct xenbus_device *xendev = to_xenbus_device(dev);
 	struct device_driver *drv = data;
+	struct xenbus_driver *xendrv;
 
 	/*
 	 * A device with no driver will never connect. We care only about
@@ -858,11 +1036,15 @@ static int is_disconnected_device(struct
 	if (drv && (dev->driver != drv))
 		return 0;
 
-	return (xendev->state != XenbusStateConnected);
+	xendrv = to_xenbus_driver(dev->driver);
+	return (xendev->state < XenbusStateConnected ||
+		(xendrv->is_ready && !xendrv->is_ready(xendev)));
 }
 
 static int exists_disconnected_device(struct device_driver *drv)
 {
+	if (xenbus_frontend.error)
+		return xenbus_frontend.error;
 	return bus_for_each_dev(&xenbus_frontend.bus, NULL, drv,
 				is_disconnected_device);
 }
@@ -871,6 +1053,7 @@ static int print_device_status(struct de
 {
 	struct xenbus_device *xendev = to_xenbus_device(dev);
 	struct device_driver *drv = data;
+	struct xenbus_driver *xendrv;
 
 	/* Is this operation limited to a particular driver? */
 	if (drv && (dev->driver != drv))
@@ -880,12 +1063,23 @@ static int print_device_status(struct de
 		/* Information only: is this too noisy? */
 		printk(KERN_INFO "XENBUS: Device with no driver: %s\n",
 		       xendev->nodename);
-	} else if (xendev->state != XenbusStateConnected) {
+		return 0;
+	}
+
+	if (xendev->state < XenbusStateConnected) {
+		enum xenbus_state rstate = XenbusStateUnknown;
+		if (xendev->otherend)
+			rstate = xenbus_read_driver_state(xendev->otherend);
 		printk(KERN_WARNING "XENBUS: Timeout connecting "
-		       "to device: %s (state %d)\n",
-		       xendev->nodename, xendev->state);
+		       "to device: %s (local state %d, remote state %d)\n",
+		       xendev->nodename, xendev->state, rstate);
 	}
 
+	xendrv = to_xenbus_driver(dev->driver);
+	if (xendrv->is_ready && !xendrv->is_ready(xendev))
+		printk(KERN_WARNING "XENBUS: Device not ready: %s\n",
+		       xendev->nodename);
+
 	return 0;
 }
 
@@ -893,7 +1087,7 @@ static int print_device_status(struct de
 static int ready_to_wait_for_devices;
 
 /*
- * On a 10 second timeout, wait for all devices currently configured.  We need
+ * On a 5-minute timeout, wait for all devices currently configured.  We need
  * to do this to guarantee that the filesystems and / or network devices
  * needed for boot are available, before we can allow the boot to proceed.
  *
@@ -908,18 +1102,30 @@ static int ready_to_wait_for_devices;
  */
 static void wait_for_devices(struct xenbus_driver *xendrv)
 {
-	unsigned long timeout = jiffies + 10*HZ;
+	unsigned long start = jiffies;
 	struct device_driver *drv = xendrv ? &xendrv->driver : NULL;
+	unsigned int seconds_waited = 0;
 
 	if (!ready_to_wait_for_devices || !is_running_on_xen())
 		return;
 
 	while (exists_disconnected_device(drv)) {
-		if (time_after(jiffies, timeout))
-			break;
+		if (time_after(jiffies, start + (seconds_waited+5)*HZ)) {
+			if (!seconds_waited)
+				printk(KERN_WARNING "XENBUS: Waiting for "
+				       "devices to initialise: ");
+			seconds_waited += 5;
+			printk("%us...", 300 - seconds_waited);
+			if (seconds_waited == 300)
+				break;
+		}
+		
 		schedule_timeout_interruptible(HZ/10);
 	}
 
+	if (seconds_waited)
+		printk("\n");
+
 	bus_for_each_dev(&xenbus_frontend.bus, NULL, drv,
 			 print_device_status);
 }
@@ -927,10 +1133,18 @@ static void wait_for_devices(struct xenb
 #ifndef MODULE
 static int __init boot_wait_for_devices(void)
 {
-	ready_to_wait_for_devices = 1;
-	wait_for_devices(NULL);
+	if (!xenbus_frontend.error) {
+		ready_to_wait_for_devices = 1;
+		wait_for_devices(NULL);
+	}
 	return 0;
 }
 
 late_initcall(boot_wait_for_devices);
 #endif
+
+int xenbus_for_each_frontend(void *arg, int (*fn)(struct device *, void *))
+{
+	return bus_for_each_dev(&xenbus_frontend.bus, NULL, arg, fn);
+}
+EXPORT_SYMBOL_GPL(xenbus_for_each_frontend);
Index: head-2008-04-15/drivers/xen/xenbus/xenbus_probe.h
===================================================================
--- head-2008-04-15.orig/drivers/xen/xenbus/xenbus_probe.h	2008-04-15 09:41:09.000000000 +0200
+++ head-2008-04-15/drivers/xen/xenbus/xenbus_probe.h	2008-04-15 09:59:33.000000000 +0200
@@ -5,23 +5,23 @@
  *
  * Copyright (C) 2005 Rusty Russell, IBM Corporation
  * Copyright (C) 2005 XenSource Ltd.
- *
+ * 
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License version 2
  * as published by the Free Software Foundation; or, when distributed
  * separately from the Linux kernel or incorporated into other
  * software packages, subject to the following license:
- *
+ * 
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this source file (the "Software"), to deal in the Software without
  * restriction, including without limitation the rights to use, copy, modify,
  * merge, publish, distribute, sublicense, and/or sell copies of the Software,
  * and to permit persons to whom the Software is furnished to do so, subject to
  * the following conditions:
- *
+ * 
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
- *
+ * 
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
@@ -34,41 +34,42 @@
 #ifndef _XENBUS_PROBE_H
 #define _XENBUS_PROBE_H
 
-#ifdef CONFIG_XEN_BACKEND
+#if defined(CONFIG_XEN_BACKEND) || defined(CONFIG_XEN_BACKEND_MODULE)
 extern void xenbus_backend_suspend(int (*fn)(struct device *, void *));
 extern void xenbus_backend_resume(int (*fn)(struct device *, void *));
 extern void xenbus_backend_probe_and_watch(void);
-extern int xenbus_backend_bus_register(void);
-extern void xenbus_backend_bus_unregister(void);
+extern void xenbus_backend_bus_register(void);
+extern void xenbus_backend_device_register(void);
 #else
 static inline void xenbus_backend_suspend(int (*fn)(struct device *, void *)) {}
 static inline void xenbus_backend_resume(int (*fn)(struct device *, void *)) {}
 static inline void xenbus_backend_probe_and_watch(void) {}
-static inline int xenbus_backend_bus_register(void) { return 0; }
-static inline void xenbus_backend_bus_unregister(void) {}
+static inline void xenbus_backend_bus_register(void) {}
+static inline void xenbus_backend_device_register(void) {}
 #endif
 
 struct xen_bus_type
 {
 	char *root;
+	int error;
 	unsigned int levels;
 	int (*get_bus_id)(char bus_id[BUS_ID_SIZE], const char *nodename);
 	int (*probe)(const char *type, const char *dir);
 	struct bus_type bus;
+	struct device dev;
 };
 
 extern int xenbus_match(struct device *_dev, struct device_driver *_drv);
 extern int xenbus_dev_probe(struct device *_dev);
 extern int xenbus_dev_remove(struct device *_dev);
 extern int xenbus_register_driver_common(struct xenbus_driver *drv,
-					 struct xen_bus_type *bus,
-					 struct module *owner,
-					 const char *mod_name);
+					 struct xen_bus_type *bus);
 extern int xenbus_probe_node(struct xen_bus_type *bus,
 			     const char *type,
 			     const char *nodename);
 extern int xenbus_probe_devices(struct xen_bus_type *bus);
 
-extern void xenbus_dev_changed(const char *node, struct xen_bus_type *bus);
+extern void dev_changed(const char *node, struct xen_bus_type *bus);
 
 #endif
+
Index: head-2008-04-15/drivers/xen/xenbus/xenbus_xs.c
===================================================================
--- head-2008-04-15.orig/drivers/xen/xenbus/xenbus_xs.c	2008-04-15 09:41:09.000000000 +0200
+++ head-2008-04-15/drivers/xen/xenbus/xenbus_xs.c	2008-04-15 09:59:33.000000000 +0200
@@ -5,23 +5,23 @@
  * and we use xenbus_comms for communication.
  *
  * Copyright (C) 2005 Rusty Russell, IBM Corporation
- *
+ * 
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License version 2
  * as published by the Free Software Foundation; or, when distributed
  * separately from the Linux kernel or incorporated into other
  * software packages, subject to the following license:
- *
+ * 
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this source file (the "Software"), to deal in the Software without
  * restriction, including without limitation the rights to use, copy, modify,
  * merge, publish, distribute, sublicense, and/or sell copies of the Software,
  * and to permit persons to whom the Software is furnished to do so, subject to
  * the following conditions:
- *
+ * 
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
- *
+ * 
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
@@ -47,6 +47,14 @@
 #include <xen/xenbus.h>
 #include "xenbus_comms.h"
 
+#ifdef HAVE_XEN_PLATFORM_COMPAT_H
+#include <xen/platform-compat.h>
+#endif
+
+#ifndef PF_NOFREEZE /* Old kernel (pre-2.6.6). */
+#define PF_NOFREEZE	0
+#endif
+
 struct xs_stored_msg {
 	struct list_head list;
 
@@ -108,7 +116,7 @@ static DEFINE_SPINLOCK(watch_events_lock
  * carrying out work.
  */
 static pid_t xenwatch_pid;
-static DEFINE_MUTEX(xenwatch_mutex);
+/* static */ DEFINE_MUTEX(xenwatch_mutex);
 static DECLARE_WAIT_QUEUE_HEAD(watch_events_waitq);
 
 static int get_error(const char *errorstring)
@@ -177,7 +185,7 @@ void *xenbus_dev_request_and_reply(struc
 
 	mutex_unlock(&xs_state.request_mutex);
 
-	if ((msg->type == XS_TRANSACTION_END) ||
+	if ((req_msg.type == XS_TRANSACTION_END) ||
 	    ((req_msg.type == XS_TRANSACTION_START) &&
 	     (msg->type == XS_ERROR)))
 		up_read(&xs_state.transaction_mutex);
@@ -213,7 +221,7 @@ static void *xs_talkv(struct xenbus_tran
 	}
 
 	for (i = 0; i < num_vecs; i++) {
-		err = xb_write(iovec[i].iov_base, iovec[i].iov_len);
+		err = xb_write(iovec[i].iov_base, iovec[i].iov_len);;
 		if (err) {
 			mutex_unlock(&xs_state.request_mutex);
 			return ERR_PTR(err);
@@ -283,9 +291,9 @@ static char *join(const char *dir, const
 	char *buffer;
 
 	if (strlen(name) == 0)
-		buffer = kasprintf(GFP_KERNEL, "%s", dir);
+		buffer = kasprintf(GFP_KERNEL|__GFP_HIGH, "%s", dir);
 	else
-		buffer = kasprintf(GFP_KERNEL, "%s/%s", dir, name);
+		buffer = kasprintf(GFP_KERNEL|__GFP_HIGH, "%s/%s", dir, name);
 	return (!buffer) ? ERR_PTR(-ENOMEM) : buffer;
 }
 
@@ -297,7 +305,7 @@ static char **split(char *strings, unsig
 	*num = count_strings(strings, len);
 
 	/* Transfer to one big alloc for easy freeing. */
-	ret = kmalloc(*num * sizeof(char *) + len, GFP_KERNEL);
+	ret = kmalloc(*num * sizeof(char *) + len, GFP_KERNEL|__GFP_HIGH);
 	if (!ret) {
 		kfree(strings);
 		return ERR_PTR(-ENOMEM);
@@ -498,7 +506,7 @@ int xenbus_printf(struct xenbus_transact
 #define PRINTF_BUFFER_SIZE 4096
 	char *printf_buffer;
 
-	printf_buffer = kmalloc(PRINTF_BUFFER_SIZE, GFP_KERNEL);
+	printf_buffer = kmalloc(PRINTF_BUFFER_SIZE, GFP_KERNEL|__GFP_HIGH);
 	if (printf_buffer == NULL)
 		return -ENOMEM;
 
@@ -621,6 +629,8 @@ void unregister_xenbus_watch(struct xenb
 	char token[sizeof(watch) * 2 + 1];
 	int err;
 
+	BUG_ON(watch->flags & XBWF_new_thread);
+
 	sprintf(token, "%lX", (long)watch);
 
 	down_read(&xs_state.watch_mutex);
@@ -638,11 +648,6 @@ void unregister_xenbus_watch(struct xenb
 
 	up_read(&xs_state.watch_mutex);
 
-	/* Make sure there are no callbacks running currently (unless
-	   its us) */
-	if (current->pid != xenwatch_pid)
-		mutex_lock(&xenwatch_mutex);
-
 	/* Cancel pending watch events. */
 	spin_lock(&watch_events_lock);
 	list_for_each_entry_safe(msg, tmp, &watch_events, list) {
@@ -654,8 +659,11 @@ void unregister_xenbus_watch(struct xenb
 	}
 	spin_unlock(&watch_events_lock);
 
-	if (current->pid != xenwatch_pid)
+	/* Flush any currently-executing callback, unless we are it. :-) */
+	if (current->pid != xenwatch_pid) {
+		mutex_lock(&xenwatch_mutex);
 		mutex_unlock(&xenwatch_mutex);
+	}
 }
 EXPORT_SYMBOL_GPL(unregister_xenbus_watch);
 
@@ -693,11 +701,30 @@ void xs_suspend_cancel(void)
 	up_write(&xs_state.transaction_mutex);
 }
 
+static int xenwatch_handle_callback(void *data)
+{
+	struct xs_stored_msg *msg = data;
+
+	msg->u.watch.handle->callback(msg->u.watch.handle,
+				      (const char **)msg->u.watch.vec,
+				      msg->u.watch.vec_size);
+
+	kfree(msg->u.watch.vec);
+	kfree(msg);
+
+	/* Kill this kthread if we were spawned just for this callback. */
+	if (current->pid != xenwatch_pid)
+		do_exit(0);
+
+	return 0;
+}
+
 static int xenwatch_thread(void *unused)
 {
 	struct list_head *ent;
 	struct xs_stored_msg *msg;
 
+	current->flags |= PF_NOFREEZE;
 	for (;;) {
 		wait_event_interruptible(watch_events_waitq,
 					 !list_empty(&watch_events));
@@ -713,17 +740,29 @@ static int xenwatch_thread(void *unused)
 			list_del(ent);
 		spin_unlock(&watch_events_lock);
 
-		if (ent != &watch_events) {
-			msg = list_entry(ent, struct xs_stored_msg, list);
-			msg->u.watch.handle->callback(
-				msg->u.watch.handle,
-				(const char **)msg->u.watch.vec,
-				msg->u.watch.vec_size);
-			kfree(msg->u.watch.vec);
-			kfree(msg);
+		if (ent == &watch_events) {
+			mutex_unlock(&xenwatch_mutex);
+			continue;
 		}
 
-		mutex_unlock(&xenwatch_mutex);
+		msg = list_entry(ent, struct xs_stored_msg, list);
+
+		/*
+		 * Unlock the mutex before running an XBWF_new_thread
+		 * handler. kthread_run can block which can deadlock
+		 * against unregister_xenbus_watch() if we need to
+		 * unregister other watches in order to make
+		 * progress. This can occur on resume before the swap
+		 * device is attached.
+		 */
+		if (msg->u.watch.handle->flags & XBWF_new_thread) {
+			mutex_unlock(&xenwatch_mutex);
+			kthread_run(xenwatch_handle_callback,
+				    msg, "xenwatch_cb");
+		} else {
+			xenwatch_handle_callback(msg);
+			mutex_unlock(&xenwatch_mutex);
+		}
 	}
 
 	return 0;
@@ -751,7 +790,7 @@ static int process_msg(void)
 	}
 
 
-	msg = kmalloc(sizeof(*msg), GFP_KERNEL);
+	msg = kmalloc(sizeof(*msg), GFP_KERNEL|__GFP_HIGH);
 	if (msg == NULL) {
 		err = -ENOMEM;
 		goto out;
@@ -763,7 +802,7 @@ static int process_msg(void)
 		goto out;
 	}
 
-	body = kmalloc(msg->hdr.len + 1, GFP_KERNEL);
+	body = kmalloc(msg->hdr.len + 1, GFP_KERNEL|__GFP_HIGH);
 	if (body == NULL) {
 		kfree(msg);
 		err = -ENOMEM;
@@ -817,6 +856,7 @@ static int xenbus_thread(void *unused)
 {
 	int err;
 
+	current->flags |= PF_NOFREEZE;
 	for (;;) {
 		err = process_msg();
 		if (err)
Index: head-2008-04-15/include/xen/interface/elfnote.h
===================================================================
--- head-2008-04-15.orig/include/xen/interface/elfnote.h	2008-04-15 09:41:09.000000000 +0200
+++ head-2008-04-15/include/xen/interface/elfnote.h	2008-04-15 09:59:33.000000000 +0200
@@ -3,6 +3,24 @@
  *
  * Definitions used for the Xen ELF notes.
  *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
  * Copyright (c) 2006, Ian Campbell, XenSource Ltd.
  */
 
@@ -10,7 +28,7 @@
 #define __XEN_PUBLIC_ELFNOTE_H__
 
 /*
- * The notes should live in a SHT_NOTE segment and have "Xen" in the
+ * The notes should live in a PT_NOTE segment and have "Xen" in the
  * name field.
  *
  * Numeric types are either 4 or 8 bytes depending on the content of
@@ -22,8 +40,6 @@
 
 /*
  * NAME=VALUE pair (string).
- *
- * LEGACY: FEATURES and PAE
  */
 #define XEN_ELFNOTE_INFO           0
 
@@ -90,7 +106,12 @@
 #define XEN_ELFNOTE_LOADER         8
 
 /*
- * The kernel supports PAE (x86/32 only, string = "yes" or "no").
+ * The kernel supports PAE (x86/32 only, string = "yes", "no" or
+ * "bimodal").
+ *
+ * For compatibility with Xen 3.0.3 and earlier the "bimodal" setting
+ * may be given as "yes,bimodal" which will cause older Xen to treat
+ * this kernel as PAE.
  *
  * LEGACY: PAE (n.b. The legacy interface included a provision to
  * indicate 'extended-cr3' support allowing L3 page tables to be
@@ -120,6 +141,85 @@
  */
 #define XEN_ELFNOTE_BSD_SYMTAB    11
 
+/*
+ * The lowest address the hypervisor hole can begin at (numeric).
+ *
+ * This must not be set higher than HYPERVISOR_VIRT_START. Its presence
+ * also indicates to the hypervisor that the kernel can deal with the
+ * hole starting at a higher address.
+ */
+#define XEN_ELFNOTE_HV_START_LOW  12
+
+/*
+ * List of maddr_t-sized mask/value pairs describing how to recognize
+ * (non-present) L1 page table entries carrying valid MFNs (numeric).
+ */
+#define XEN_ELFNOTE_L1_MFN_VALID  13
+
+/*
+ * Whether or not the guest supports cooperative suspend cancellation.
+ */
+#define XEN_ELFNOTE_SUSPEND_CANCEL 14
+
+/*
+ * The number of the highest elfnote defined.
+ */
+#define XEN_ELFNOTE_MAX XEN_ELFNOTE_SUSPEND_CANCEL
+
+/*
+ * System information exported through crash notes.
+ *
+ * The kexec / kdump code will create one XEN_ELFNOTE_CRASH_INFO 
+ * note in case of a system crash. This note will contain various
+ * information about the system, see xen/include/xen/elfcore.h.
+ */
+#define XEN_ELFNOTE_CRASH_INFO 0x1000001
+
+/*
+ * System registers exported through crash notes.
+ *
+ * The kexec / kdump code will create one XEN_ELFNOTE_CRASH_REGS 
+ * note per cpu in case of a system crash. This note is architecture
+ * specific and will contain registers not saved in the "CORE" note.
+ * See xen/include/xen/elfcore.h for more information.
+ */
+#define XEN_ELFNOTE_CRASH_REGS 0x1000002
+
+
+/*
+ * xen dump-core none note.
+ * xm dump-core code will create one XEN_ELFNOTE_DUMPCORE_NONE
+ * in its dump file to indicate that the file is xen dump-core
+ * file. This note doesn't have any other information.
+ * See tools/libxc/xc_core.h for more information.
+ */
+#define XEN_ELFNOTE_DUMPCORE_NONE               0x2000000
+
+/*
+ * xen dump-core header note.
+ * xm dump-core code will create one XEN_ELFNOTE_DUMPCORE_HEADER
+ * in its dump file.
+ * See tools/libxc/xc_core.h for more information.
+ */
+#define XEN_ELFNOTE_DUMPCORE_HEADER             0x2000001
+
+/*
+ * xen dump-core xen version note.
+ * xm dump-core code will create one XEN_ELFNOTE_DUMPCORE_XEN_VERSION
+ * in its dump file. It contains the xen version obtained via the
+ * XENVER hypercall.
+ * See tools/libxc/xc_core.h for more information.
+ */
+#define XEN_ELFNOTE_DUMPCORE_XEN_VERSION        0x2000002
+
+/*
+ * xen dump-core format version note.
+ * xm dump-core code will create one XEN_ELFNOTE_DUMPCORE_FORMAT_VERSION
+ * in its dump file. It contains a format version identifier.
+ * See tools/libxc/xc_core.h for more information.
+ */
+#define XEN_ELFNOTE_DUMPCORE_FORMAT_VERSION     0x2000003
+
 #endif /* __XEN_PUBLIC_ELFNOTE_H__ */
 
 /*
Index: head-2008-04-15/include/xen/interface/event_channel.h
===================================================================
--- head-2008-04-15.orig/include/xen/interface/event_channel.h	2008-04-15 09:41:09.000000000 +0200
+++ head-2008-04-15/include/xen/interface/event_channel.h	2008-04-15 09:59:33.000000000 +0200
@@ -1,7 +1,25 @@
 /******************************************************************************
  * event_channel.h
- *
+ * 
  * Event channels between domains.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
  *
  * Copyright (c) 2003-2004, K A Fraser.
  */
@@ -9,8 +27,15 @@
 #ifndef __XEN_PUBLIC_EVENT_CHANNEL_H__
 #define __XEN_PUBLIC_EVENT_CHANNEL_H__
 
+/*
+ * Prototype for this hypercall is:
+ *  int event_channel_op(int cmd, void *args)
+ * @cmd  == EVTCHNOP_??? (event-channel operation).
+ * @args == Operation-specific extra arguments (NULL if none).
+ */
+
 typedef uint32_t evtchn_port_t;
-DEFINE_GUEST_HANDLE(evtchn_port_t);
+DEFINE_XEN_GUEST_HANDLE(evtchn_port_t);
 
 /*
  * EVTCHNOP_alloc_unbound: Allocate a port in domain <dom> and mark as
@@ -20,13 +45,14 @@ DEFINE_GUEST_HANDLE(evtchn_port_t);
  *  1. If the caller is unprivileged then <dom> must be DOMID_SELF.
  *  2. <rdom> may be DOMID_SELF, allowing loopback connections.
  */
-#define EVTCHNOP_alloc_unbound	  6
+#define EVTCHNOP_alloc_unbound    6
 struct evtchn_alloc_unbound {
-	/* IN parameters */
-	domid_t dom, remote_dom;
-	/* OUT parameters */
-	evtchn_port_t port;
+    /* IN parameters */
+    domid_t dom, remote_dom;
+    /* OUT parameters */
+    evtchn_port_t port;
 };
+typedef struct evtchn_alloc_unbound evtchn_alloc_unbound_t;
 
 /*
  * EVTCHNOP_bind_interdomain: Construct an interdomain event channel between
@@ -39,29 +65,35 @@ struct evtchn_alloc_unbound {
  */
 #define EVTCHNOP_bind_interdomain 0
 struct evtchn_bind_interdomain {
-	/* IN parameters. */
-	domid_t remote_dom;
-	evtchn_port_t remote_port;
-	/* OUT parameters. */
-	evtchn_port_t local_port;
+    /* IN parameters. */
+    domid_t remote_dom;
+    evtchn_port_t remote_port;
+    /* OUT parameters. */
+    evtchn_port_t local_port;
 };
+typedef struct evtchn_bind_interdomain evtchn_bind_interdomain_t;
 
 /*
  * EVTCHNOP_bind_virq: Bind a local event channel to VIRQ <irq> on specified
  * vcpu.
  * NOTES:
- *  1. A virtual IRQ may be bound to at most one event channel per vcpu.
- *  2. The allocated event channel is bound to the specified vcpu. The binding
- *     may not be changed.
+ *  1. Virtual IRQs are classified as per-vcpu or global. See the VIRQ list
+ *     in xen.h for the classification of each VIRQ.
+ *  2. Global VIRQs must be allocated on VCPU0 but can subsequently be
+ *     re-bound via EVTCHNOP_bind_vcpu.
+ *  3. Per-vcpu VIRQs may be bound to at most one event channel per vcpu.
+ *     The allocated event channel is bound to the specified vcpu and the
+ *     binding cannot be changed.
  */
-#define EVTCHNOP_bind_virq	  1
+#define EVTCHNOP_bind_virq        1
 struct evtchn_bind_virq {
-	/* IN parameters. */
-	uint32_t virq;
-	uint32_t vcpu;
-	/* OUT parameters. */
-	evtchn_port_t port;
+    /* IN parameters. */
+    uint32_t virq;
+    uint32_t vcpu;
+    /* OUT parameters. */
+    evtchn_port_t port;
 };
+typedef struct evtchn_bind_virq evtchn_bind_virq_t;
 
 /*
  * EVTCHNOP_bind_pirq: Bind a local event channel to PIRQ <irq>.
@@ -69,15 +101,16 @@ struct evtchn_bind_virq {
  *  1. A physical IRQ may be bound to at most one event channel per domain.
  *  2. Only a sufficiently-privileged domain may bind to a physical IRQ.
  */
-#define EVTCHNOP_bind_pirq	  2
+#define EVTCHNOP_bind_pirq        2
 struct evtchn_bind_pirq {
-	/* IN parameters. */
-	uint32_t pirq;
+    /* IN parameters. */
+    uint32_t pirq;
 #define BIND_PIRQ__WILL_SHARE 1
-	uint32_t flags; /* BIND_PIRQ__* */
-	/* OUT parameters. */
-	evtchn_port_t port;
+    uint32_t flags; /* BIND_PIRQ__* */
+    /* OUT parameters. */
+    evtchn_port_t port;
 };
+typedef struct evtchn_bind_pirq evtchn_bind_pirq_t;
 
 /*
  * EVTCHNOP_bind_ipi: Bind a local event channel to receive events.
@@ -85,33 +118,36 @@ struct evtchn_bind_pirq {
  *  1. The allocated event channel is bound to the specified vcpu. The binding
  *     may not be changed.
  */
-#define EVTCHNOP_bind_ipi	  7
+#define EVTCHNOP_bind_ipi         7
 struct evtchn_bind_ipi {
-	uint32_t vcpu;
-	/* OUT parameters. */
-	evtchn_port_t port;
+    uint32_t vcpu;
+    /* OUT parameters. */
+    evtchn_port_t port;
 };
+typedef struct evtchn_bind_ipi evtchn_bind_ipi_t;
 
 /*
  * EVTCHNOP_close: Close a local event channel <port>. If the channel is
  * interdomain then the remote end is placed in the unbound state
  * (EVTCHNSTAT_unbound), awaiting a new connection.
  */
-#define EVTCHNOP_close		  3
+#define EVTCHNOP_close            3
 struct evtchn_close {
-	/* IN parameters. */
-	evtchn_port_t port;
+    /* IN parameters. */
+    evtchn_port_t port;
 };
+typedef struct evtchn_close evtchn_close_t;
 
 /*
  * EVTCHNOP_send: Send an event to the remote end of the channel whose local
  * endpoint is <port>.
  */
-#define EVTCHNOP_send		  4
+#define EVTCHNOP_send             4
 struct evtchn_send {
-	/* IN parameters. */
-	evtchn_port_t port;
+    /* IN parameters. */
+    evtchn_port_t port;
 };
+typedef struct evtchn_send evtchn_send_t;
 
 /*
  * EVTCHNOP_status: Get the current status of the communication channel which
@@ -121,75 +157,108 @@ struct evtchn_send {
  *  2. Only a sufficiently-privileged domain may obtain the status of an event
  *     channel for which <dom> is not DOMID_SELF.
  */
-#define EVTCHNOP_status		  5
+#define EVTCHNOP_status           5
 struct evtchn_status {
-	/* IN parameters */
-	domid_t  dom;
-	evtchn_port_t port;
-	/* OUT parameters */
-#define EVTCHNSTAT_closed	0  /* Channel is not in use.		     */
-#define EVTCHNSTAT_unbound	1  /* Channel is waiting interdom connection.*/
-#define EVTCHNSTAT_interdomain	2  /* Channel is connected to remote domain. */
-#define EVTCHNSTAT_pirq		3  /* Channel is bound to a phys IRQ line.   */
-#define EVTCHNSTAT_virq		4  /* Channel is bound to a virtual IRQ line */
-#define EVTCHNSTAT_ipi		5  /* Channel is bound to a virtual IPI line */
-	uint32_t status;
-	uint32_t vcpu;		   /* VCPU to which this channel is bound.   */
-	union {
-		struct {
-			domid_t dom;
-		} unbound; /* EVTCHNSTAT_unbound */
-		struct {
-			domid_t dom;
-			evtchn_port_t port;
-		} interdomain; /* EVTCHNSTAT_interdomain */
-		uint32_t pirq;	    /* EVTCHNSTAT_pirq	      */
-		uint32_t virq;	    /* EVTCHNSTAT_virq	      */
-	} u;
+    /* IN parameters */
+    domid_t  dom;
+    evtchn_port_t port;
+    /* OUT parameters */
+#define EVTCHNSTAT_closed       0  /* Channel is not in use.                 */
+#define EVTCHNSTAT_unbound      1  /* Channel is waiting interdom connection.*/
+#define EVTCHNSTAT_interdomain  2  /* Channel is connected to remote domain. */
+#define EVTCHNSTAT_pirq         3  /* Channel is bound to a phys IRQ line.   */
+#define EVTCHNSTAT_virq         4  /* Channel is bound to a virtual IRQ line */
+#define EVTCHNSTAT_ipi          5  /* Channel is bound to a virtual IPI line */
+    uint32_t status;
+    uint32_t vcpu;                 /* VCPU to which this channel is bound.   */
+    union {
+        struct {
+            domid_t dom;
+        } unbound; /* EVTCHNSTAT_unbound */
+        struct {
+            domid_t dom;
+            evtchn_port_t port;
+        } interdomain; /* EVTCHNSTAT_interdomain */
+        uint32_t pirq;      /* EVTCHNSTAT_pirq        */
+        uint32_t virq;      /* EVTCHNSTAT_virq        */
+    } u;
 };
+typedef struct evtchn_status evtchn_status_t;
 
 /*
  * EVTCHNOP_bind_vcpu: Specify which vcpu a channel should notify when an
  * event is pending.
  * NOTES:
- *  1. IPI- and VIRQ-bound channels always notify the vcpu that initialised
- *     the binding. This binding cannot be changed.
- *  2. All other channels notify vcpu0 by default. This default is set when
+ *  1. IPI-bound channels always notify the vcpu specified at bind time.
+ *     This binding cannot be changed.
+ *  2. Per-VCPU VIRQ channels always notify the vcpu specified at bind time.
+ *     This binding cannot be changed.
+ *  3. All other channels notify vcpu0 by default. This default is set when
  *     the channel is allocated (a port that is freed and subsequently reused
  *     has its binding reset to vcpu0).
  */
-#define EVTCHNOP_bind_vcpu	  8
+#define EVTCHNOP_bind_vcpu        8
 struct evtchn_bind_vcpu {
-	/* IN parameters. */
-	evtchn_port_t port;
-	uint32_t vcpu;
+    /* IN parameters. */
+    evtchn_port_t port;
+    uint32_t vcpu;
 };
+typedef struct evtchn_bind_vcpu evtchn_bind_vcpu_t;
 
 /*
  * EVTCHNOP_unmask: Unmask the specified local event-channel port and deliver
  * a notification to the appropriate VCPU if an event is pending.
  */
-#define EVTCHNOP_unmask		  9
+#define EVTCHNOP_unmask           9
 struct evtchn_unmask {
-	/* IN parameters. */
-	evtchn_port_t port;
+    /* IN parameters. */
+    evtchn_port_t port;
+};
+typedef struct evtchn_unmask evtchn_unmask_t;
+
+/*
+ * EVTCHNOP_reset: Close all event channels associated with specified domain.
+ * NOTES:
+ *  1. <dom> may be specified as DOMID_SELF.
+ *  2. Only a sufficiently-privileged domain may specify other than DOMID_SELF.
+ */
+#define EVTCHNOP_reset           10
+struct evtchn_reset {
+    /* IN parameters. */
+    domid_t dom;
 };
+typedef struct evtchn_reset evtchn_reset_t;
 
+/*
+ * Argument to event_channel_op_compat() hypercall. Superceded by new
+ * event_channel_op() hypercall since 0x00030202.
+ */
 struct evtchn_op {
-	uint32_t cmd; /* EVTCHNOP_* */
-	union {
-		struct evtchn_alloc_unbound    alloc_unbound;
-		struct evtchn_bind_interdomain bind_interdomain;
-		struct evtchn_bind_virq	       bind_virq;
-		struct evtchn_bind_pirq	       bind_pirq;
-		struct evtchn_bind_ipi	       bind_ipi;
-		struct evtchn_close	       close;
-		struct evtchn_send	       send;
-		struct evtchn_status	       status;
-		struct evtchn_bind_vcpu	       bind_vcpu;
-		struct evtchn_unmask	       unmask;
-	} u;
+    uint32_t cmd; /* EVTCHNOP_* */
+    union {
+        struct evtchn_alloc_unbound    alloc_unbound;
+        struct evtchn_bind_interdomain bind_interdomain;
+        struct evtchn_bind_virq        bind_virq;
+        struct evtchn_bind_pirq        bind_pirq;
+        struct evtchn_bind_ipi         bind_ipi;
+        struct evtchn_close            close;
+        struct evtchn_send             send;
+        struct evtchn_status           status;
+        struct evtchn_bind_vcpu        bind_vcpu;
+        struct evtchn_unmask           unmask;
+    } u;
 };
-DEFINE_GUEST_HANDLE_STRUCT(evtchn_op);
+typedef struct evtchn_op evtchn_op_t;
+DEFINE_XEN_GUEST_HANDLE(evtchn_op_t);
 
 #endif /* __XEN_PUBLIC_EVENT_CHANNEL_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
Index: head-2008-04-15/include/xen/interface/features.h
===================================================================
--- head-2008-04-15.orig/include/xen/interface/features.h	2008-04-15 09:41:09.000000000 +0200
+++ head-2008-04-15/include/xen/interface/features.h	2008-04-15 09:59:33.000000000 +0200
@@ -1,7 +1,25 @@
 /******************************************************************************
  * features.h
- *
+ * 
  * Feature flags, reported by XENVER_get_features.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
  *
  * Copyright (c) 2006, Keir Fraser <keir@xensource.com>
  */
@@ -38,6 +56,19 @@
  */
 #define XENFEAT_pae_pgdir_above_4gb        4
 
+/* x86: Does this Xen host support the MMU_PT_UPDATE_PRESERVE_AD hypercall? */
+#define XENFEAT_mmu_pt_update_preserve_ad  5
+
 #define XENFEAT_NR_SUBMAPS 1
 
 #endif /* __XEN_PUBLIC_FEATURES_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
Index: head-2008-04-15/include/xen/interface/grant_table.h
===================================================================
--- head-2008-04-15.orig/include/xen/interface/grant_table.h	2008-04-15 09:41:09.000000000 +0200
+++ head-2008-04-15/include/xen/interface/grant_table.h	2008-04-15 09:59:33.000000000 +0200
@@ -1,9 +1,9 @@
 /******************************************************************************
  * grant_table.h
- *
+ * 
  * Interface for granting foreign access to page frames, and receiving
  * page-ownership transfers.
- *
+ * 
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to
  * deal in the Software without restriction, including without limitation the
@@ -36,10 +36,10 @@
 /* Some rough guidelines on accessing and updating grant-table entries
  * in a concurrency-safe manner. For more information, Linux contains a
  * reference implementation for guest OSes (arch/xen/kernel/grant_table.c).
- *
+ * 
  * NB. WMB is a no-op on current-generation x86 processors. However, a
  *     compiler barrier will still be required.
- *
+ * 
  * Introducing a valid entry into the grant table:
  *  1. Write ent->domid.
  *  2. Write ent->frame:
@@ -48,7 +48,7 @@
  *                           frame, or zero if none.
  *  3. Write memory barrier (WMB).
  *  4. Write ent->flags, inc. valid type.
- *
+ * 
  * Invalidating an unused GTF_permit_access entry:
  *  1. flags = ent->flags.
  *  2. Observe that !(flags & (GTF_reading|GTF_writing)).
@@ -60,7 +60,7 @@
  *  This cannot be done directly. Request assistance from the domain controller
  *  which can set a timeout on the use of a grant entry and take necessary
  *  action. (NB. This is not yet implemented!).
- *
+ * 
  * Invalidating an unused GTF_accept_transfer entry:
  *  1. flags = ent->flags.
  *  2. Observe that !(flags & GTF_transfer_committed). [*]
@@ -78,7 +78,7 @@
  *
  * Changing a GTF_permit_access from writable to read-only:
  *  Use SMP-safe CMPXCHG to set GTF_readonly, while checking !GTF_writing.
- *
+ * 
  * Changing a GTF_permit_access from read-only to writable:
  *  Use SMP-safe bit-setting instruction.
  */
@@ -100,6 +100,7 @@ struct grant_entry {
      */
     uint32_t frame;
 };
+typedef struct grant_entry grant_entry_t;
 
 /*
  * Type of grant entry.
@@ -118,6 +119,7 @@ struct grant_entry {
  *  GTF_readonly: Restrict @domid to read-only mappings and accesses. [GST]
  *  GTF_reading: Grant entry is currently mapped for reading by @domid. [XEN]
  *  GTF_writing: Grant entry is currently mapped for writing by @domid. [XEN]
+ *  GTF_PAT, GTF_PWT, GTF_PCD: (x86) cache attribute flags for the grant [GST]
  */
 #define _GTF_readonly       (2)
 #define GTF_readonly        (1U<<_GTF_readonly)
@@ -125,6 +127,12 @@ struct grant_entry {
 #define GTF_reading         (1U<<_GTF_reading)
 #define _GTF_writing        (4)
 #define GTF_writing         (1U<<_GTF_writing)
+#define _GTF_PWT            (5)
+#define GTF_PWT             (1U<<_GTF_PWT)
+#define _GTF_PCD            (6)
+#define GTF_PCD             (1U<<_GTF_PCD)
+#define _GTF_PAT            (7)
+#define GTF_PAT             (1U<<_GTF_PAT)
 
 /*
  * Subflags for GTF_accept_transfer:
@@ -167,7 +175,7 @@ typedef uint32_t grant_handle_t;
  *  2. If GNTMAP_host_map is specified then a mapping will be added at
  *     either a host virtual address in the current address space, or at
  *     a PTE at the specified machine address.  The type of mapping to
- *     perform is selected through the GNTMAP_contains_pte flag, and the
+ *     perform is selected through the GNTMAP_contains_pte flag, and the 
  *     address is specified in <host_addr>.
  *  3. Mappings should only be destroyed via GNTTABOP_unmap_grant_ref. If a
  *     host mapping is destroyed by other means then it is *NOT* guaranteed
@@ -185,6 +193,8 @@ struct gnttab_map_grant_ref {
     grant_handle_t handle;
     uint64_t dev_bus_addr;
 };
+typedef struct gnttab_map_grant_ref gnttab_map_grant_ref_t;
+DEFINE_XEN_GUEST_HANDLE(gnttab_map_grant_ref_t);
 
 /*
  * GNTTABOP_unmap_grant_ref: Destroy one or more grant-reference mappings
@@ -206,6 +216,8 @@ struct gnttab_unmap_grant_ref {
     /* OUT parameters. */
     int16_t  status;              /* GNTST_* */
 };
+typedef struct gnttab_unmap_grant_ref gnttab_unmap_grant_ref_t;
+DEFINE_XEN_GUEST_HANDLE(gnttab_unmap_grant_ref_t);
 
 /*
  * GNTTABOP_setup_table: Set up a grant table for <dom> comprising at least
@@ -223,8 +235,10 @@ struct gnttab_setup_table {
     uint32_t nr_frames;
     /* OUT parameters. */
     int16_t  status;              /* GNTST_* */
-    ulong *frame_list;
+    XEN_GUEST_HANDLE(ulong) frame_list;
 };
+typedef struct gnttab_setup_table gnttab_setup_table_t;
+DEFINE_XEN_GUEST_HANDLE(gnttab_setup_table_t);
 
 /*
  * GNTTABOP_dump_table: Dump the contents of the grant table to the
@@ -237,24 +251,28 @@ struct gnttab_dump_table {
     /* OUT parameters. */
     int16_t status;               /* GNTST_* */
 };
+typedef struct gnttab_dump_table gnttab_dump_table_t;
+DEFINE_XEN_GUEST_HANDLE(gnttab_dump_table_t);
 
 /*
  * GNTTABOP_transfer_grant_ref: Transfer <frame> to a foreign domain. The
  * foreign domain has previously registered its interest in the transfer via
  * <domid, ref>.
- *
+ * 
  * Note that, even if the transfer fails, the specified page no longer belongs
  * to the calling domain *unless* the error is GNTST_bad_page.
  */
 #define GNTTABOP_transfer                4
 struct gnttab_transfer {
     /* IN parameters. */
-    unsigned long mfn;
+    xen_pfn_t     mfn;
     domid_t       domid;
     grant_ref_t   ref;
     /* OUT parameters. */
     int16_t       status;
 };
+typedef struct gnttab_transfer gnttab_transfer_t;
+DEFINE_XEN_GUEST_HANDLE(gnttab_transfer_t);
 
 
 /*
@@ -281,21 +299,22 @@ struct gnttab_transfer {
 #define GNTCOPY_dest_gref         (1<<_GNTCOPY_dest_gref)
 
 #define GNTTABOP_copy                 5
-struct gnttab_copy {
-	/* IN parameters. */
-	struct {
-		union {
-			grant_ref_t ref;
-			unsigned long   gmfn;
-		} u;
-		domid_t  domid;
-		uint16_t offset;
-	} source, dest;
-	uint16_t      len;
-	uint16_t      flags;          /* GNTCOPY_* */
-	/* OUT parameters. */
-	int16_t       status;
-};
+typedef struct gnttab_copy {
+    /* IN parameters. */
+    struct {
+        union {
+            grant_ref_t ref;
+            xen_pfn_t   gmfn;
+        } u;
+        domid_t  domid;
+        uint16_t offset;
+    } source, dest;
+    uint16_t      len;
+    uint16_t      flags;          /* GNTCOPY_* */
+    /* OUT parameters. */
+    int16_t       status;
+} gnttab_copy_t;
+DEFINE_XEN_GUEST_HANDLE(gnttab_copy_t);
 
 /*
  * GNTTABOP_query_size: Query the current and maximum sizes of the shared
@@ -313,6 +332,31 @@ struct gnttab_query_size {
     uint32_t max_nr_frames;
     int16_t  status;              /* GNTST_* */
 };
+typedef struct gnttab_query_size gnttab_query_size_t;
+DEFINE_XEN_GUEST_HANDLE(gnttab_query_size_t);
+
+/*
+ * GNTTABOP_unmap_and_replace: Destroy one or more grant-reference mappings
+ * tracked by <handle> but atomically replace the page table entry with one
+ * pointing to the machine address under <new_addr>.  <new_addr> will be
+ * redirected to the null entry.
+ * NOTES:
+ *  1. The call may fail in an undefined manner if either mapping is not
+ *     tracked by <handle>.
+ *  2. After executing a batch of unmaps, it is guaranteed that no stale
+ *     mappings will remain in the device or host TLBs.
+ */
+#define GNTTABOP_unmap_and_replace    7
+struct gnttab_unmap_and_replace {
+    /* IN parameters. */
+    uint64_t host_addr;
+    uint64_t new_addr;
+    grant_handle_t handle;
+    /* OUT parameters. */
+    int16_t  status;              /* GNTST_* */
+};
+typedef struct gnttab_unmap_and_replace gnttab_unmap_and_replace_t;
+DEFINE_XEN_GUEST_HANDLE(gnttab_unmap_and_replace_t);
 
 
 /*
@@ -356,7 +400,8 @@ struct gnttab_query_size {
 #define GNTST_no_device_space  (-7) /* Out of space in I/O MMU.              */
 #define GNTST_permission_denied (-8) /* Not enough privilege for operation.  */
 #define GNTST_bad_page         (-9) /* Specified page was invalid for op.    */
-#define GNTST_bad_copy_arg    (-10) /* copy arguments cross page boundary */
+#define GNTST_bad_copy_arg    (-10) /* copy arguments cross page boundary.   */
+#define GNTST_address_too_big (-11) /* transfer page address too large.      */
 
 #define GNTTABOP_error_msgs {                   \
     "okay",                                     \
@@ -369,7 +414,18 @@ struct gnttab_query_size {
     "no spare translation slot in the I/O MMU", \
     "permission denied",                        \
     "bad page",                                 \
-    "copy arguments cross page boundary"        \
+    "copy arguments cross page boundary",       \
+    "page address size too large"               \
 }
 
 #endif /* __XEN_PUBLIC_GRANT_TABLE_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
Index: head-2008-04-15/include/xen/interface/io/blkif.h
===================================================================
--- head-2008-04-15.orig/include/xen/interface/io/blkif.h	2008-04-15 09:41:09.000000000 +0200
+++ head-2008-04-15/include/xen/interface/io/blkif.h	2008-04-15 09:59:33.000000000 +0200
@@ -1,7 +1,25 @@
 /******************************************************************************
  * blkif.h
- *
+ * 
  * Unified block-device I/O interface for Xen guest OSes.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
  *
  * Copyright (c) 2003-2004, Keir Fraser
  */
@@ -17,15 +35,17 @@
  * notification can be made conditional on req_event (i.e., the generic
  * hold-off mechanism provided by the ring macros). Backends must set
  * req_event appropriately (e.g., using RING_FINAL_CHECK_FOR_REQUESTS()).
- *
+ * 
  * Back->front notifications: When enqueuing a new response, sending a
  * notification can be made conditional on rsp_event (i.e., the generic
  * hold-off mechanism provided by the ring macros). Frontends must set
  * rsp_event appropriately (e.g., using RING_FINAL_CHECK_FOR_RESPONSES()).
  */
 
-typedef uint16_t blkif_vdev_t;
-typedef uint64_t blkif_sector_t;
+#ifndef blkif_vdev_t
+#define blkif_vdev_t   uint16_t
+#endif
+#define blkif_sector_t uint64_t
 
 /*
  * REQUEST CODES.
@@ -34,7 +54,7 @@ typedef uint64_t blkif_sector_t;
 #define BLKIF_OP_WRITE             1
 /*
  * Recognised only if "feature-barrier" is present in backend xenbus info.
- * The "feature_barrier" node contains a boolean indicating whether barrier
+ * The "feature-barrier" node contains a boolean indicating whether barrier
  * requests are likely to succeed or fail. Either way, a barrier request
  * may fail at any time with BLKIF_RSP_EOPNOTSUPP if it is unsupported by
  * the underlying block-device hardware. The boolean simply indicates whether
@@ -43,33 +63,50 @@ typedef uint64_t blkif_sector_t;
  * create the "feature-barrier" node!
  */
 #define BLKIF_OP_WRITE_BARRIER     2
+/*
+ * Recognised if "feature-flush-cache" is present in backend xenbus
+ * info.  A flush will ask the underlying storage hardware to flush its
+ * non-volatile caches as appropriate.  The "feature-flush-cache" node
+ * contains a boolean indicating whether flush requests are likely to
+ * succeed or fail. Either way, a flush request may fail at any time
+ * with BLKIF_RSP_EOPNOTSUPP if it is unsupported by the underlying
+ * block-device hardware. The boolean simply indicates whether or not it
+ * is worthwhile for the frontend to attempt flushes.  If a backend does
+ * not recognise BLKIF_OP_WRITE_FLUSH_CACHE, it should *not* create the
+ * "feature-flush-cache" node!
+ */
+#define BLKIF_OP_FLUSH_DISKCACHE   3
 
 /*
  * Maximum scatter/gather segments per request.
- * This is carefully chosen so that sizeof(struct blkif_ring) <= PAGE_SIZE.
+ * This is carefully chosen so that sizeof(blkif_ring_t) <= PAGE_SIZE.
  * NB. This could be 12 if the ring indexes weren't stored in the same page.
  */
 #define BLKIF_MAX_SEGMENTS_PER_REQUEST 11
 
+struct blkif_request_segment {
+    grant_ref_t gref;        /* reference to I/O buffer frame        */
+    /* @first_sect: first sector in frame to transfer (inclusive).   */
+    /* @last_sect: last sector in frame to transfer (inclusive).     */
+    uint8_t     first_sect, last_sect;
+};
+
 struct blkif_request {
-	uint8_t        operation;    /* BLKIF_OP_???                         */
-	uint8_t        nr_segments;  /* number of segments                   */
-	blkif_vdev_t   handle;       /* only for read/write requests         */
-	uint64_t       id;           /* private guest value, echoed in resp  */
-	blkif_sector_t sector_number;/* start sector idx on disk (r/w only)  */
-	struct blkif_request_segment {
-		grant_ref_t gref;        /* reference to I/O buffer frame        */
-		/* @first_sect: first sector in frame to transfer (inclusive).   */
-		/* @last_sect: last sector in frame to transfer (inclusive).     */
-		uint8_t     first_sect, last_sect;
-	} seg[BLKIF_MAX_SEGMENTS_PER_REQUEST];
+    uint8_t        operation;    /* BLKIF_OP_???                         */
+    uint8_t        nr_segments;  /* number of segments                   */
+    blkif_vdev_t   handle;       /* only for read/write requests         */
+    uint64_t       id;           /* private guest value, echoed in resp  */
+    blkif_sector_t sector_number;/* start sector idx on disk (r/w only)  */
+    struct blkif_request_segment seg[BLKIF_MAX_SEGMENTS_PER_REQUEST];
 };
+typedef struct blkif_request blkif_request_t;
 
 struct blkif_response {
-	uint64_t        id;              /* copied from request */
-	uint8_t         operation;       /* copied from request */
-	int16_t         status;          /* BLKIF_RSP_???       */
+    uint64_t        id;              /* copied from request */
+    uint8_t         operation;       /* copied from request */
+    int16_t         status;          /* BLKIF_RSP_???       */
 };
+typedef struct blkif_response blkif_response_t;
 
 /*
  * STATUS RETURN CODES.
@@ -92,3 +129,13 @@ DEFINE_RING_TYPES(blkif, struct blkif_re
 #define VDISK_READONLY     0x4
 
 #endif /* __XEN_PUBLIC_IO_BLKIF_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
Index: head-2008-04-15/include/xen/interface/io/console.h
===================================================================
--- head-2008-04-15.orig/include/xen/interface/io/console.h	2008-04-15 09:41:09.000000000 +0200
+++ head-2008-04-15/include/xen/interface/io/console.h	2008-04-15 09:59:33.000000000 +0200
@@ -1,7 +1,25 @@
 /******************************************************************************
  * console.h
- *
+ * 
  * Console I/O interface for Xen guest OSes.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
  *
  * Copyright (c) 2005, Keir Fraser
  */
@@ -21,3 +39,13 @@ struct xencons_interface {
 };
 
 #endif /* __XEN_PUBLIC_IO_CONSOLE_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
Index: head-2008-04-15/include/xen/interface/io/netif.h
===================================================================
--- head-2008-04-15.orig/include/xen/interface/io/netif.h	2008-04-15 09:41:09.000000000 +0200
+++ head-2008-04-15/include/xen/interface/io/netif.h	2008-04-15 09:59:33.000000000 +0200
@@ -1,7 +1,25 @@
 /******************************************************************************
  * netif.h
- *
+ * 
  * Unified network-device I/O interface for Xen guest OSes.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
  *
  * Copyright (c) 2003-2004, Keir Fraser
  */
@@ -47,18 +65,21 @@
 #define _NETTXF_extra_info     (3)
 #define  NETTXF_extra_info     (1U<<_NETTXF_extra_info)
 
-struct xen_netif_tx_request {
+struct netif_tx_request {
     grant_ref_t gref;      /* Reference to buffer page */
     uint16_t offset;       /* Offset within buffer page */
     uint16_t flags;        /* NETTXF_* */
     uint16_t id;           /* Echoed in response message. */
     uint16_t size;         /* Packet size in bytes.       */
 };
+typedef struct netif_tx_request netif_tx_request_t;
 
 /* Types of netif_extra_info descriptors. */
-#define XEN_NETIF_EXTRA_TYPE_NONE  (0)  /* Never used - invalid */
-#define XEN_NETIF_EXTRA_TYPE_GSO   (1)  /* u.gso */
-#define XEN_NETIF_EXTRA_TYPE_MAX   (2)
+#define XEN_NETIF_EXTRA_TYPE_NONE      (0)  /* Never used - invalid */
+#define XEN_NETIF_EXTRA_TYPE_GSO       (1)  /* u.gso */
+#define XEN_NETIF_EXTRA_TYPE_MCAST_ADD (2)  /* u.mcast */
+#define XEN_NETIF_EXTRA_TYPE_MCAST_DEL (3)  /* u.mcast */
+#define XEN_NETIF_EXTRA_TYPE_MAX       (4)
 
 /* netif_extra_info flags. */
 #define _XEN_NETIF_EXTRA_FLAG_MORE (0)
@@ -71,49 +92,68 @@ struct xen_netif_tx_request {
  * This structure needs to fit within both netif_tx_request and
  * netif_rx_response for compatibility.
  */
-struct xen_netif_extra_info {
-	uint8_t type;  /* XEN_NETIF_EXTRA_TYPE_* */
-	uint8_t flags; /* XEN_NETIF_EXTRA_FLAG_* */
-
-	union {
-		struct {
-			/*
-			 * Maximum payload size of each segment. For
-			 * example, for TCP this is just the path MSS.
-			 */
-			uint16_t size;
-
-			/*
-			 * GSO type. This determines the protocol of
-			 * the packet and any extra features required
-			 * to segment the packet properly.
-			 */
-			uint8_t type; /* XEN_NETIF_GSO_TYPE_* */
-
-			/* Future expansion. */
-			uint8_t pad;
-
-			/*
-			 * GSO features. This specifies any extra GSO
-			 * features required to process this packet,
-			 * such as ECN support for TCPv4.
-			 */
-			uint16_t features; /* XEN_NETIF_GSO_FEAT_* */
-		} gso;
+struct netif_extra_info {
+    uint8_t type;  /* XEN_NETIF_EXTRA_TYPE_* */
+    uint8_t flags; /* XEN_NETIF_EXTRA_FLAG_* */
+
+    union {
+        /*
+         * XEN_NETIF_EXTRA_TYPE_GSO:
+         */
+        struct {
+            /*
+             * Maximum payload size of each segment. For example, for TCP this
+             * is just the path MSS.
+             */
+            uint16_t size;
+
+            /*
+             * GSO type. This determines the protocol of the packet and any
+             * extra features required to segment the packet properly.
+             */
+            uint8_t type; /* XEN_NETIF_GSO_TYPE_* */
+
+            /* Future expansion. */
+            uint8_t pad;
+
+            /*
+             * GSO features. This specifies any extra GSO features required
+             * to process this packet, such as ECN support for TCPv4.
+             */
+            uint16_t features; /* XEN_NETIF_GSO_FEAT_* */
+        } gso;
+
+        /*
+         * XEN_NETIF_EXTRA_TYPE_MCAST_{ADD,DEL}:
+         * Backend advertises availability via 'feature-multicast-control'
+         * xenbus node containing value '1'.
+         * Frontend requests this feature by advertising
+         * 'request-multicast-control' xenbus node containing value '1'.
+         * If multicast control is requested then multicast flooding is
+         * disabled and the frontend must explicitly register its interest
+         * in multicast groups using dummy transmit requests containing
+         * MCAST_{ADD,DEL} extra-info fragments.
+         */
+        struct {
+            uint8_t addr[6]; /* Address to add/remove. */
+        } mcast;
 
-		uint16_t pad[3];
-	} u;
+        uint16_t pad[3];
+    } u;
 };
+typedef struct netif_extra_info netif_extra_info_t;
 
-struct xen_netif_tx_response {
-	uint16_t id;
-	int16_t  status;       /* NETIF_RSP_* */
+struct netif_tx_response {
+    uint16_t id;
+    int16_t  status;       /* NETIF_RSP_* */
 };
+typedef struct netif_tx_response netif_tx_response_t;
 
-struct xen_netif_rx_request {
-	uint16_t    id;        /* Echoed in response message.        */
-	grant_ref_t gref;      /* Reference to incoming granted frame */
+struct netif_rx_request {
+    uint16_t    id;        /* Echoed in response message.        */
+    grant_ref_t gref;      /* Reference to incoming granted frame */
 };
+typedef struct netif_rx_request netif_rx_request_t;
 
 /* Packet data has been validated against protocol checksum. */
 #define _NETRXF_data_validated (0)
@@ -131,23 +171,20 @@ struct xen_netif_rx_request {
 #define _NETRXF_extra_info     (3)
 #define  NETRXF_extra_info     (1U<<_NETRXF_extra_info)
 
-struct xen_netif_rx_response {
+struct netif_rx_response {
     uint16_t id;
     uint16_t offset;       /* Offset in page of start of received packet  */
     uint16_t flags;        /* NETRXF_* */
     int16_t  status;       /* -ve: BLKIF_RSP_* ; +ve: Rx'ed pkt size. */
 };
+typedef struct netif_rx_response netif_rx_response_t;
 
 /*
  * Generate netif ring structures and types.
  */
 
-DEFINE_RING_TYPES(xen_netif_tx,
-		  struct xen_netif_tx_request,
-		  struct xen_netif_tx_response);
-DEFINE_RING_TYPES(xen_netif_rx,
-		  struct xen_netif_rx_request,
-		  struct xen_netif_rx_response);
+DEFINE_RING_TYPES(netif_tx, struct netif_tx_request, struct netif_tx_response);
+DEFINE_RING_TYPES(netif_rx, struct netif_rx_request, struct netif_rx_response);
 
 #define NETIF_RSP_DROPPED         -2
 #define NETIF_RSP_ERROR           -1
@@ -156,3 +193,13 @@ DEFINE_RING_TYPES(xen_netif_rx,
 #define NETIF_RSP_NULL             1
 
 #endif
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
Index: head-2008-04-15/include/xen/interface/io/ring.h
===================================================================
--- head-2008-04-15.orig/include/xen/interface/io/ring.h	2008-04-15 09:41:09.000000000 +0200
+++ head-2008-04-15/include/xen/interface/io/ring.h	2008-04-15 09:59:33.000000000 +0200
@@ -1,18 +1,44 @@
 /******************************************************************************
  * ring.h
- *
+ * 
  * Shared producer-consumer ring macros.
  *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
  * Tim Deegan and Andrew Warfield November 2004.
  */
 
 #ifndef __XEN_PUBLIC_IO_RING_H__
 #define __XEN_PUBLIC_IO_RING_H__
 
+#include "../xen-compat.h"
+
+#if __XEN_INTERFACE_VERSION__ < 0x00030208
+#define xen_mb()  mb()
+#define xen_rmb() rmb()
+#define xen_wmb() wmb()
+#endif
+
 typedef unsigned int RING_IDX;
 
 /* Round a 32-bit unsigned constant down to the nearest power of two. */
-#define __RD2(_x)  (((_x) & 0x00000002) ? 0x2		       : ((_x) & 0x1))
+#define __RD2(_x)  (((_x) & 0x00000002) ? 0x2                  : ((_x) & 0x1))
 #define __RD4(_x)  (((_x) & 0x0000000c) ? __RD2((_x)>>2)<<2    : __RD2(_x))
 #define __RD8(_x)  (((_x) & 0x000000f0) ? __RD4((_x)>>4)<<4    : __RD4(_x))
 #define __RD16(_x) (((_x) & 0x0000ff00) ? __RD8((_x)>>8)<<8    : __RD8(_x))
@@ -21,198 +47,209 @@ typedef unsigned int RING_IDX;
 /*
  * Calculate size of a shared ring, given the total available space for the
  * ring and indexes (_sz), and the name tag of the request/response structure.
- * A ring contains as many entries as will fit, rounded down to the nearest
+ * A ring contains as many entries as will fit, rounded down to the nearest 
  * power of two (so we can mask with (size-1) to loop around).
  */
 #define __RING_SIZE(_s, _sz) \
-    (__RD32(((_sz) - (long)&(_s)->ring + (long)(_s)) / sizeof((_s)->ring[0])))
+    (__RD32(((_sz) - (long)(_s)->ring + (long)(_s)) / sizeof((_s)->ring[0])))
 
 /*
  * Macros to make the correct C datatypes for a new kind of ring.
- *
+ * 
  * To make a new ring datatype, you need to have two message structures,
- * let's say struct request, and struct response already defined.
+ * let's say request_t, and response_t already defined.
  *
  * In a header where you want the ring datatype declared, you then do:
  *
- *     DEFINE_RING_TYPES(mytag, struct request, struct response);
+ *     DEFINE_RING_TYPES(mytag, request_t, response_t);
  *
  * These expand out to give you a set of types, as you can see below.
  * The most important of these are:
- *
- *     struct mytag_sring      - The shared ring.
- *     struct mytag_front_ring - The 'front' half of the ring.
- *     struct mytag_back_ring  - The 'back' half of the ring.
+ * 
+ *     mytag_sring_t      - The shared ring.
+ *     mytag_front_ring_t - The 'front' half of the ring.
+ *     mytag_back_ring_t  - The 'back' half of the ring.
  *
  * To initialize a ring in your code you need to know the location and size
  * of the shared memory area (PAGE_SIZE, for instance). To initialise
  * the front half:
  *
- *     struct mytag_front_ring front_ring;
- *     SHARED_RING_INIT((struct mytag_sring *)shared_page);
- *     FRONT_RING_INIT(&front_ring, (struct mytag_sring *)shared_page,
- *		       PAGE_SIZE);
+ *     mytag_front_ring_t front_ring;
+ *     SHARED_RING_INIT((mytag_sring_t *)shared_page);
+ *     FRONT_RING_INIT(&front_ring, (mytag_sring_t *)shared_page, PAGE_SIZE);
  *
  * Initializing the back follows similarly (note that only the front
  * initializes the shared ring):
  *
- *     struct mytag_back_ring back_ring;
- *     BACK_RING_INIT(&back_ring, (struct mytag_sring *)shared_page,
- *		      PAGE_SIZE);
+ *     mytag_back_ring_t back_ring;
+ *     BACK_RING_INIT(&back_ring, (mytag_sring_t *)shared_page, PAGE_SIZE);
  */
 
-#define DEFINE_RING_TYPES(__name, __req_t, __rsp_t)			\
-									\
-/* Shared ring entry */							\
-union __name##_sring_entry {						\
-    __req_t req;							\
-    __rsp_t rsp;							\
-};									\
-									\
-/* Shared ring page */							\
-struct __name##_sring {							\
-    RING_IDX req_prod, req_event;					\
-    RING_IDX rsp_prod, rsp_event;					\
-    uint8_t  pad[48];							\
-    union __name##_sring_entry ring[1]; /* variable-length */		\
-};									\
-									\
-/* "Front" end's private variables */					\
-struct __name##_front_ring {						\
-    RING_IDX req_prod_pvt;						\
-    RING_IDX rsp_cons;							\
-    unsigned int nr_ents;						\
-    struct __name##_sring *sring;					\
-};									\
-									\
-/* "Back" end's private variables */					\
-struct __name##_back_ring {						\
-    RING_IDX rsp_prod_pvt;						\
-    RING_IDX req_cons;							\
-    unsigned int nr_ents;						\
-    struct __name##_sring *sring;					\
-};
+#define DEFINE_RING_TYPES(__name, __req_t, __rsp_t)                     \
+                                                                        \
+/* Shared ring entry */                                                 \
+union __name##_sring_entry {                                            \
+    __req_t req;                                                        \
+    __rsp_t rsp;                                                        \
+};                                                                      \
+                                                                        \
+/* Shared ring page */                                                  \
+struct __name##_sring {                                                 \
+    RING_IDX req_prod, req_event;                                       \
+    RING_IDX rsp_prod, rsp_event;                                       \
+    uint8_t  pad[48];                                                   \
+    union __name##_sring_entry ring[1]; /* variable-length */           \
+};                                                                      \
+                                                                        \
+/* "Front" end's private variables */                                   \
+struct __name##_front_ring {                                            \
+    RING_IDX req_prod_pvt;                                              \
+    RING_IDX rsp_cons;                                                  \
+    unsigned int nr_ents;                                               \
+    struct __name##_sring *sring;                                       \
+};                                                                      \
+                                                                        \
+/* "Back" end's private variables */                                    \
+struct __name##_back_ring {                                             \
+    RING_IDX rsp_prod_pvt;                                              \
+    RING_IDX req_cons;                                                  \
+    unsigned int nr_ents;                                               \
+    struct __name##_sring *sring;                                       \
+};                                                                      \
+                                                                        \
+/* Syntactic sugar */                                                   \
+typedef struct __name##_sring __name##_sring_t;                         \
+typedef struct __name##_front_ring __name##_front_ring_t;               \
+typedef struct __name##_back_ring __name##_back_ring_t
 
 /*
  * Macros for manipulating rings.
- *
- * FRONT_RING_whatever works on the "front end" of a ring: here
+ * 
+ * FRONT_RING_whatever works on the "front end" of a ring: here 
  * requests are pushed on to the ring and responses taken off it.
- *
- * BACK_RING_whatever works on the "back end" of a ring: here
+ * 
+ * BACK_RING_whatever works on the "back end" of a ring: here 
  * requests are taken off the ring and responses put on.
- *
- * N.B. these macros do NO INTERLOCKS OR FLOW CONTROL.
- * This is OK in 1-for-1 request-response situations where the
+ * 
+ * N.B. these macros do NO INTERLOCKS OR FLOW CONTROL. 
+ * This is OK in 1-for-1 request-response situations where the 
  * requestor (front end) never has more than RING_SIZE()-1
  * outstanding requests.
  */
 
 /* Initialising empty rings */
-#define SHARED_RING_INIT(_s) do {					\
-    (_s)->req_prod  = (_s)->rsp_prod  = 0;				\
-    (_s)->req_event = (_s)->rsp_event = 1;				\
-    memset((_s)->pad, 0, sizeof((_s)->pad));				\
+#define SHARED_RING_INIT(_s) do {                                       \
+    (_s)->req_prod  = (_s)->rsp_prod  = 0;                              \
+    (_s)->req_event = (_s)->rsp_event = 1;                              \
+    (void)memset((_s)->pad, 0, sizeof((_s)->pad));                      \
 } while(0)
 
-#define FRONT_RING_INIT(_r, _s, __size) do {				\
-    (_r)->req_prod_pvt = 0;						\
-    (_r)->rsp_cons = 0;							\
-    (_r)->nr_ents = __RING_SIZE(_s, __size);				\
-    (_r)->sring = (_s);							\
+#define FRONT_RING_INIT(_r, _s, __size) do {                            \
+    (_r)->req_prod_pvt = 0;                                             \
+    (_r)->rsp_cons = 0;                                                 \
+    (_r)->nr_ents = __RING_SIZE(_s, __size);                            \
+    (_r)->sring = (_s);                                                 \
 } while (0)
 
-#define BACK_RING_INIT(_r, _s, __size) do {				\
-    (_r)->rsp_prod_pvt = 0;						\
-    (_r)->req_cons = 0;							\
-    (_r)->nr_ents = __RING_SIZE(_s, __size);				\
-    (_r)->sring = (_s);							\
+#define BACK_RING_INIT(_r, _s, __size) do {                             \
+    (_r)->rsp_prod_pvt = 0;                                             \
+    (_r)->req_cons = 0;                                                 \
+    (_r)->nr_ents = __RING_SIZE(_s, __size);                            \
+    (_r)->sring = (_s);                                                 \
 } while (0)
 
 /* Initialize to existing shared indexes -- for recovery */
-#define FRONT_RING_ATTACH(_r, _s, __size) do {				\
-    (_r)->sring = (_s);							\
-    (_r)->req_prod_pvt = (_s)->req_prod;				\
-    (_r)->rsp_cons = (_s)->rsp_prod;					\
-    (_r)->nr_ents = __RING_SIZE(_s, __size);				\
+#define FRONT_RING_ATTACH(_r, _s, __size) do {                          \
+    (_r)->sring = (_s);                                                 \
+    (_r)->req_prod_pvt = (_s)->req_prod;                                \
+    (_r)->rsp_cons = (_s)->rsp_prod;                                    \
+    (_r)->nr_ents = __RING_SIZE(_s, __size);                            \
 } while (0)
 
-#define BACK_RING_ATTACH(_r, _s, __size) do {				\
-    (_r)->sring = (_s);							\
-    (_r)->rsp_prod_pvt = (_s)->rsp_prod;				\
-    (_r)->req_cons = (_s)->req_prod;					\
-    (_r)->nr_ents = __RING_SIZE(_s, __size);				\
+#define BACK_RING_ATTACH(_r, _s, __size) do {                           \
+    (_r)->sring = (_s);                                                 \
+    (_r)->rsp_prod_pvt = (_s)->rsp_prod;                                \
+    (_r)->req_cons = (_s)->req_prod;                                    \
+    (_r)->nr_ents = __RING_SIZE(_s, __size);                            \
 } while (0)
 
 /* How big is this ring? */
-#define RING_SIZE(_r)							\
+#define RING_SIZE(_r)                                                   \
     ((_r)->nr_ents)
 
 /* Number of free requests (for use on front side only). */
-#define RING_FREE_REQUESTS(_r)						\
+#define RING_FREE_REQUESTS(_r)                                          \
     (RING_SIZE(_r) - ((_r)->req_prod_pvt - (_r)->rsp_cons))
 
 /* Test if there is an empty slot available on the front ring.
  * (This is only meaningful from the front. )
  */
-#define RING_FULL(_r)							\
+#define RING_FULL(_r)                                                   \
     (RING_FREE_REQUESTS(_r) == 0)
 
 /* Test if there are outstanding messages to be processed on a ring. */
-#define RING_HAS_UNCONSUMED_RESPONSES(_r)				\
+#define RING_HAS_UNCONSUMED_RESPONSES(_r)                               \
     ((_r)->sring->rsp_prod - (_r)->rsp_cons)
 
-#define RING_HAS_UNCONSUMED_REQUESTS(_r)				\
-    ({									\
-	unsigned int req = (_r)->sring->req_prod - (_r)->req_cons;	\
-	unsigned int rsp = RING_SIZE(_r) -				\
-			   ((_r)->req_cons - (_r)->rsp_prod_pvt);	\
-	req < rsp ? req : rsp;						\
-    })
+#ifdef __GNUC__
+#define RING_HAS_UNCONSUMED_REQUESTS(_r) ({                             \
+    unsigned int req = (_r)->sring->req_prod - (_r)->req_cons;          \
+    unsigned int rsp = RING_SIZE(_r) -                                  \
+        ((_r)->req_cons - (_r)->rsp_prod_pvt);                          \
+    req < rsp ? req : rsp;                                              \
+})
+#else
+/* Same as above, but without the nice GCC ({ ... }) syntax. */
+#define RING_HAS_UNCONSUMED_REQUESTS(_r)                                \
+    ((((_r)->sring->req_prod - (_r)->req_cons) <                        \
+      (RING_SIZE(_r) - ((_r)->req_cons - (_r)->rsp_prod_pvt))) ?        \
+     ((_r)->sring->req_prod - (_r)->req_cons) :                         \
+     (RING_SIZE(_r) - ((_r)->req_cons - (_r)->rsp_prod_pvt)))
+#endif
 
 /* Direct access to individual ring elements, by index. */
-#define RING_GET_REQUEST(_r, _idx)					\
+#define RING_GET_REQUEST(_r, _idx)                                      \
     (&((_r)->sring->ring[((_idx) & (RING_SIZE(_r) - 1))].req))
 
-#define RING_GET_RESPONSE(_r, _idx)					\
+#define RING_GET_RESPONSE(_r, _idx)                                     \
     (&((_r)->sring->ring[((_idx) & (RING_SIZE(_r) - 1))].rsp))
 
 /* Loop termination condition: Would the specified index overflow the ring? */
-#define RING_REQUEST_CONS_OVERFLOW(_r, _cons)				\
+#define RING_REQUEST_CONS_OVERFLOW(_r, _cons)                           \
     (((_cons) - (_r)->rsp_prod_pvt) >= RING_SIZE(_r))
 
-#define RING_PUSH_REQUESTS(_r) do {					\
-    wmb(); /* back sees requests /before/ updated producer index */	\
-    (_r)->sring->req_prod = (_r)->req_prod_pvt;				\
+#define RING_PUSH_REQUESTS(_r) do {                                     \
+    xen_wmb(); /* back sees requests /before/ updated producer index */ \
+    (_r)->sring->req_prod = (_r)->req_prod_pvt;                         \
 } while (0)
 
-#define RING_PUSH_RESPONSES(_r) do {					\
-    wmb(); /* front sees responses /before/ updated producer index */	\
-    (_r)->sring->rsp_prod = (_r)->rsp_prod_pvt;				\
+#define RING_PUSH_RESPONSES(_r) do {                                    \
+    xen_wmb(); /* front sees resps /before/ updated producer index */   \
+    (_r)->sring->rsp_prod = (_r)->rsp_prod_pvt;                         \
 } while (0)
 
 /*
  * Notification hold-off (req_event and rsp_event):
- *
+ * 
  * When queueing requests or responses on a shared ring, it may not always be
  * necessary to notify the remote end. For example, if requests are in flight
  * in a backend, the front may be able to queue further requests without
  * notifying the back (if the back checks for new requests when it queues
  * responses).
- *
+ * 
  * When enqueuing requests or responses:
- *
+ * 
  *  Use RING_PUSH_{REQUESTS,RESPONSES}_AND_CHECK_NOTIFY(). The second argument
  *  is a boolean return value. True indicates that the receiver requires an
  *  asynchronous notification.
- *
+ * 
  * After dequeuing requests or responses (before sleeping the connection):
- *
+ * 
  *  Use RING_FINAL_CHECK_FOR_REQUESTS() or RING_FINAL_CHECK_FOR_RESPONSES().
  *  The second argument is a boolean return value. True indicates that there
  *  are pending messages on the ring (i.e., the connection should not be put
  *  to sleep).
- *
+ * 
  *  These macros will set the req_event/rsp_event field to trigger a
  *  notification on the very next message that is enqueued. If you want to
  *  create batches of work (i.e., only receive a notification after several
@@ -221,40 +258,50 @@ struct __name##_back_ring {						\
  *  field appropriately.
  */
 
-#define RING_PUSH_REQUESTS_AND_CHECK_NOTIFY(_r, _notify) do {		\
-    RING_IDX __old = (_r)->sring->req_prod;				\
-    RING_IDX __new = (_r)->req_prod_pvt;				\
-    wmb(); /* back sees requests /before/ updated producer index */	\
-    (_r)->sring->req_prod = __new;					\
-    mb(); /* back sees new requests /before/ we check req_event */	\
-    (_notify) = ((RING_IDX)(__new - (_r)->sring->req_event) <		\
-		 (RING_IDX)(__new - __old));				\
+#define RING_PUSH_REQUESTS_AND_CHECK_NOTIFY(_r, _notify) do {           \
+    RING_IDX __old = (_r)->sring->req_prod;                             \
+    RING_IDX __new = (_r)->req_prod_pvt;                                \
+    xen_wmb(); /* back sees requests /before/ updated producer index */ \
+    (_r)->sring->req_prod = __new;                                      \
+    xen_mb(); /* back sees new requests /before/ we check req_event */  \
+    (_notify) = ((RING_IDX)(__new - (_r)->sring->req_event) <           \
+                 (RING_IDX)(__new - __old));                            \
 } while (0)
 
-#define RING_PUSH_RESPONSES_AND_CHECK_NOTIFY(_r, _notify) do {		\
-    RING_IDX __old = (_r)->sring->rsp_prod;				\
-    RING_IDX __new = (_r)->rsp_prod_pvt;				\
-    wmb(); /* front sees responses /before/ updated producer index */	\
-    (_r)->sring->rsp_prod = __new;					\
-    mb(); /* front sees new responses /before/ we check rsp_event */	\
-    (_notify) = ((RING_IDX)(__new - (_r)->sring->rsp_event) <		\
-		 (RING_IDX)(__new - __old));				\
+#define RING_PUSH_RESPONSES_AND_CHECK_NOTIFY(_r, _notify) do {          \
+    RING_IDX __old = (_r)->sring->rsp_prod;                             \
+    RING_IDX __new = (_r)->rsp_prod_pvt;                                \
+    xen_wmb(); /* front sees resps /before/ updated producer index */   \
+    (_r)->sring->rsp_prod = __new;                                      \
+    xen_mb(); /* front sees new resps /before/ we check rsp_event */    \
+    (_notify) = ((RING_IDX)(__new - (_r)->sring->rsp_event) <           \
+                 (RING_IDX)(__new - __old));                            \
 } while (0)
 
-#define RING_FINAL_CHECK_FOR_REQUESTS(_r, _work_to_do) do {		\
-    (_work_to_do) = RING_HAS_UNCONSUMED_REQUESTS(_r);			\
-    if (_work_to_do) break;						\
-    (_r)->sring->req_event = (_r)->req_cons + 1;			\
-    mb();								\
-    (_work_to_do) = RING_HAS_UNCONSUMED_REQUESTS(_r);			\
+#define RING_FINAL_CHECK_FOR_REQUESTS(_r, _work_to_do) do {             \
+    (_work_to_do) = RING_HAS_UNCONSUMED_REQUESTS(_r);                   \
+    if (_work_to_do) break;                                             \
+    (_r)->sring->req_event = (_r)->req_cons + 1;                        \
+    xen_mb();                                                           \
+    (_work_to_do) = RING_HAS_UNCONSUMED_REQUESTS(_r);                   \
 } while (0)
 
-#define RING_FINAL_CHECK_FOR_RESPONSES(_r, _work_to_do) do {		\
-    (_work_to_do) = RING_HAS_UNCONSUMED_RESPONSES(_r);			\
-    if (_work_to_do) break;						\
-    (_r)->sring->rsp_event = (_r)->rsp_cons + 1;			\
-    mb();								\
-    (_work_to_do) = RING_HAS_UNCONSUMED_RESPONSES(_r);			\
+#define RING_FINAL_CHECK_FOR_RESPONSES(_r, _work_to_do) do {            \
+    (_work_to_do) = RING_HAS_UNCONSUMED_RESPONSES(_r);                  \
+    if (_work_to_do) break;                                             \
+    (_r)->sring->rsp_event = (_r)->rsp_cons + 1;                        \
+    xen_mb();                                                           \
+    (_work_to_do) = RING_HAS_UNCONSUMED_RESPONSES(_r);                  \
 } while (0)
 
 #endif /* __XEN_PUBLIC_IO_RING_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
Index: head-2008-04-15/include/xen/interface/io/xenbus.h
===================================================================
--- head-2008-04-15.orig/include/xen/interface/io/xenbus.h	2008-04-15 09:41:09.000000000 +0200
+++ head-2008-04-15/include/xen/interface/io/xenbus.h	2008-04-15 09:59:33.000000000 +0200
@@ -3,42 +3,78 @@
  *
  * Xenbus protocol details.
  *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
  * Copyright (C) 2005 XenSource Ltd.
  */
 
 #ifndef _XEN_PUBLIC_IO_XENBUS_H
 #define _XEN_PUBLIC_IO_XENBUS_H
 
-/* The state of either end of the Xenbus, i.e. the current communication
-   status of initialisation across the bus.  States here imply nothing about
-   the state of the connection between the driver and the kernel's device
-   layers.  */
-enum xenbus_state
-{
-	XenbusStateUnknown      = 0,
-	XenbusStateInitialising = 1,
-	XenbusStateInitWait     = 2,  /* Finished early
-					 initialisation, but waiting
-					 for information from the peer
-					 or hotplug scripts. */
-	XenbusStateInitialised  = 3,  /* Initialised and waiting for a
-					 connection from the peer. */
-	XenbusStateConnected    = 4,
-	XenbusStateClosing      = 5,  /* The device is being closed
-					 due to an error or an unplug
-					 event. */
-	XenbusStateClosed       = 6
+/*
+ * The state of either end of the Xenbus, i.e. the current communication
+ * status of initialisation across the bus.  States here imply nothing about
+ * the state of the connection between the driver and the kernel's device
+ * layers.
+ */
+enum xenbus_state {
+    XenbusStateUnknown       = 0,
+
+    XenbusStateInitialising  = 1,
+
+    /*
+     * InitWait: Finished early initialisation but waiting for information
+     * from the peer or hotplug scripts.
+     */
+    XenbusStateInitWait      = 2,
+
+    /*
+     * Initialised: Waiting for a connection from the peer.
+     */
+    XenbusStateInitialised   = 3,
+
+    XenbusStateConnected     = 4,
+
+    /*
+     * Closing: The device is being closed due to an error or an unplug event.
+     */
+    XenbusStateClosing       = 5,
+
+    XenbusStateClosed        = 6,
+
+    /*
+     * Reconfiguring: The device is being reconfigured.
+     */
+    XenbusStateReconfiguring = 7,
 
+    XenbusStateReconfigured  = 8
 };
+typedef enum xenbus_state XenbusState;
 
 #endif /* _XEN_PUBLIC_IO_XENBUS_H */
 
 /*
  * Local variables:
- *  c-file-style: "linux"
- *  indent-tabs-mode: t
- *  c-indent-level: 8
- *  c-basic-offset: 8
- *  tab-width: 8
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
  * End:
  */
Index: head-2008-04-15/include/xen/interface/io/xs_wire.h
===================================================================
--- head-2008-04-15.orig/include/xen/interface/io/xs_wire.h	2008-04-15 09:41:09.000000000 +0200
+++ head-2008-04-15/include/xen/interface/io/xs_wire.h	2008-04-15 09:59:33.000000000 +0200
@@ -1,6 +1,25 @@
 /*
  * Details of the "wire" protocol between Xen Store Daemon and client
  * library or guest kernel.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
  * Copyright (C) 2005 Rusty Russell IBM Corporation
  */
 
@@ -26,7 +45,9 @@ enum xsd_sockmsg_type
     XS_SET_PERMS,
     XS_WATCH_EVENT,
     XS_ERROR,
-    XS_IS_DOMAIN_INTRODUCED
+    XS_IS_DOMAIN_INTRODUCED,
+    XS_RESUME,
+    XS_SET_TARGET
 };
 
 #define XS_WRITE_NONE "NONE"
@@ -40,7 +61,11 @@ struct xsd_errors
     const char *errstring;
 };
 #define XSD_ERROR(x) { x, #x }
-static struct xsd_errors xsd_errors[] __attribute__((unused)) = {
+static struct xsd_errors xsd_errors[]
+#if defined(__GNUC__)
+__attribute__((unused))
+#endif
+    = {
     XSD_ERROR(EINVAL),
     XSD_ERROR(EACCES),
     XSD_ERROR(EEXIST),
@@ -84,4 +109,21 @@ struct xenstore_domain_interface {
     XENSTORE_RING_IDX rsp_cons, rsp_prod;
 };
 
+/* Violating this is very bad.  See docs/misc/xenstore.txt. */
+#define XENSTORE_PAYLOAD_MAX 4096
+
+/* Violating these just gets you an error back */
+#define XENSTORE_ABS_PATH_MAX 3072
+#define XENSTORE_REL_PATH_MAX 2048
+
 #endif /* _XS_WIRE_H */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
Index: head-2008-04-15/include/xen/interface/memory.h
===================================================================
--- head-2008-04-15.orig/include/xen/interface/memory.h	2008-04-15 09:41:09.000000000 +0200
+++ head-2008-04-15/include/xen/interface/memory.h	2008-04-15 09:59:33.000000000 +0200
@@ -1,7 +1,25 @@
 /******************************************************************************
  * memory.h
- *
+ * 
  * Memory reservation and information.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
  *
  * Copyright (c) 2005, Keir Fraser <keir@xensource.com>
  */
@@ -10,8 +28,8 @@
 #define __XEN_PUBLIC_MEMORY_H__
 
 /*
- * Increase or decrease the specified domain's memory reservation. Returns a
- * -ve errcode on failure, or the # extents successfully allocated or freed.
+ * Increase or decrease the specified domain's memory reservation. Returns the
+ * number of extents successfully allocated or freed.
  * arg == addr of struct xen_memory_reservation.
  */
 #define XENMEM_increase_reservation 0
@@ -29,15 +47,15 @@ struct xen_memory_reservation {
      *   OUT: GMFN bases of extents that were allocated
      *   (NB. This command also updates the mach_to_phys translation table)
      */
-    GUEST_HANDLE(ulong) extent_start;
+    XEN_GUEST_HANDLE(xen_pfn_t) extent_start;
 
     /* Number of extents, and size/alignment of each (2^extent_order pages). */
-    unsigned long  nr_extents;
+    xen_ulong_t    nr_extents;
     unsigned int   extent_order;
 
     /*
-     * Maximum # bits addressable by the user of the allocated region (e.g.,
-     * I/O devices often have a 32-bit limitation even in 64-bit systems). If
+     * Maximum # bits addressable by the user of the allocated region (e.g., 
+     * I/O devices often have a 32-bit limitation even in 64-bit systems). If 
      * zero then the user has no addressing restriction.
      * This field is not used by XENMEM_decrease_reservation.
      */
@@ -48,9 +66,52 @@ struct xen_memory_reservation {
      * Unprivileged domains can specify only DOMID_SELF.
      */
     domid_t        domid;
+};
+typedef struct xen_memory_reservation xen_memory_reservation_t;
+DEFINE_XEN_GUEST_HANDLE(xen_memory_reservation_t);
 
+/*
+ * An atomic exchange of memory pages. If return code is zero then
+ * @out.extent_list provides GMFNs of the newly-allocated memory.
+ * Returns zero on complete success, otherwise a negative error code.
+ * On complete success then always @nr_exchanged == @in.nr_extents.
+ * On partial success @nr_exchanged indicates how much work was done.
+ */
+#define XENMEM_exchange             11
+struct xen_memory_exchange {
+    /*
+     * [IN] Details of memory extents to be exchanged (GMFN bases).
+     * Note that @in.address_bits is ignored and unused.
+     */
+    struct xen_memory_reservation in;
+
+    /*
+     * [IN/OUT] Details of new memory extents.
+     * We require that:
+     *  1. @in.domid == @out.domid
+     *  2. @in.nr_extents  << @in.extent_order == 
+     *     @out.nr_extents << @out.extent_order
+     *  3. @in.extent_start and @out.extent_start lists must not overlap
+     *  4. @out.extent_start lists GPFN bases to be populated
+     *  5. @out.extent_start is overwritten with allocated GMFN bases
+     */
+    struct xen_memory_reservation out;
+
+    /*
+     * [OUT] Number of input extents that were successfully exchanged:
+     *  1. The first @nr_exchanged input extents were successfully
+     *     deallocated.
+     *  2. The corresponding first entries in the output extent list correctly
+     *     indicate the GMFNs that were successfully exchanged.
+     *  3. All other input and output extents are untouched.
+     *  4. If not all input exents are exchanged then the return code of this
+     *     command will be non-zero.
+     *  5. THIS FIELD MUST BE INITIALISED TO ZERO BY THE CALLER!
+     */
+    xen_ulong_t nr_exchanged;
 };
-DEFINE_GUEST_HANDLE_STRUCT(xen_memory_reservation);
+typedef struct xen_memory_exchange xen_memory_exchange_t;
+DEFINE_XEN_GUEST_HANDLE(xen_memory_exchange_t);
 
 /*
  * Returns the maximum machine frame number of mapped RAM in this system.
@@ -68,6 +129,11 @@ DEFINE_GUEST_HANDLE_STRUCT(xen_memory_re
 #define XENMEM_maximum_reservation  4
 
 /*
+ * Returns the maximum GPFN in use by the guest, or -ve errcode on failure.
+ */
+#define XENMEM_maximum_gpfn         14
+
+/*
  * Returns a list of MFN bases of 2MB extents comprising the machine_to_phys
  * mapping table. Architectures which do not have a m2p table do not implement
  * this command.
@@ -86,7 +152,7 @@ struct xen_machphys_mfn_list {
      * any large discontiguities in the machine address space, 2MB gaps in
      * the machphys table will be represented by an MFN base of zero.
      */
-    GUEST_HANDLE(ulong) extent_start;
+    XEN_GUEST_HANDLE(xen_pfn_t) extent_start;
 
     /*
      * Number of extents written to the above array. This will be smaller
@@ -94,7 +160,22 @@ struct xen_machphys_mfn_list {
      */
     unsigned int nr_extents;
 };
-DEFINE_GUEST_HANDLE_STRUCT(xen_machphys_mfn_list);
+typedef struct xen_machphys_mfn_list xen_machphys_mfn_list_t;
+DEFINE_XEN_GUEST_HANDLE(xen_machphys_mfn_list_t);
+
+/*
+ * Returns the location in virtual address space of the machine_to_phys
+ * mapping table. Architectures which do not have a m2p table, or which do not
+ * map it by default into guest address space, do not implement this command.
+ * arg == addr of xen_machphys_mapping_t.
+ */
+#define XENMEM_machphys_mapping     12
+struct xen_machphys_mapping {
+    xen_ulong_t v_start, v_end; /* Start and end virtual addresses.   */
+    xen_ulong_t max_mfn;        /* Maximum MFN that can be looked up. */
+};
+typedef struct xen_machphys_mapping xen_machphys_mapping_t;
+DEFINE_XEN_GUEST_HANDLE(xen_machphys_mapping_t);
 
 /*
  * Sets the GPFN at which a particular page appears in the specified guest's
@@ -112,12 +193,13 @@ struct xen_add_to_physmap {
     unsigned int space;
 
     /* Index into source mapping space. */
-    unsigned long idx;
+    xen_ulong_t idx;
 
     /* GPFN where the source mapping page should appear. */
-    unsigned long gpfn;
+    xen_pfn_t     gpfn;
 };
-DEFINE_GUEST_HANDLE_STRUCT(xen_add_to_physmap);
+typedef struct xen_add_to_physmap xen_add_to_physmap_t;
+DEFINE_XEN_GUEST_HANDLE(xen_add_to_physmap_t);
 
 /*
  * Translates a list of domain-specific GPFNs into MFNs. Returns a -ve error
@@ -129,17 +211,71 @@ struct xen_translate_gpfn_list {
     domid_t domid;
 
     /* Length of list. */
-    unsigned long nr_gpfns;
+    xen_ulong_t nr_gpfns;
 
     /* List of GPFNs to translate. */
-    GUEST_HANDLE(ulong) gpfn_list;
+    XEN_GUEST_HANDLE(xen_pfn_t) gpfn_list;
 
     /*
      * Output list to contain MFN translations. May be the same as the input
      * list (in which case each input GPFN is overwritten with the output MFN).
      */
-    GUEST_HANDLE(ulong) mfn_list;
+    XEN_GUEST_HANDLE(xen_pfn_t) mfn_list;
 };
-DEFINE_GUEST_HANDLE_STRUCT(xen_translate_gpfn_list);
+typedef struct xen_translate_gpfn_list xen_translate_gpfn_list_t;
+DEFINE_XEN_GUEST_HANDLE(xen_translate_gpfn_list_t);
+
+/*
+ * Returns the pseudo-physical memory map as it was when the domain
+ * was started (specified by XENMEM_set_memory_map).
+ * arg == addr of xen_memory_map_t.
+ */
+#define XENMEM_memory_map           9
+struct xen_memory_map {
+    /*
+     * On call the number of entries which can be stored in buffer. On
+     * return the number of entries which have been stored in
+     * buffer.
+     */
+    unsigned int nr_entries;
+
+    /*
+     * Entries in the buffer are in the same format as returned by the
+     * BIOS INT 0x15 EAX=0xE820 call.
+     */
+    XEN_GUEST_HANDLE(void) buffer;
+};
+typedef struct xen_memory_map xen_memory_map_t;
+DEFINE_XEN_GUEST_HANDLE(xen_memory_map_t);
+
+/*
+ * Returns the real physical memory map. Passes the same structure as
+ * XENMEM_memory_map.
+ * arg == addr of xen_memory_map_t.
+ */
+#define XENMEM_machine_memory_map   10
+
+/*
+ * Set the pseudo-physical memory map of a domain, as returned by
+ * XENMEM_memory_map.
+ * arg == addr of xen_foreign_memory_map_t.
+ */
+#define XENMEM_set_memory_map       13
+struct xen_foreign_memory_map {
+    domid_t domid;
+    struct xen_memory_map map;
+};
+typedef struct xen_foreign_memory_map xen_foreign_memory_map_t;
+DEFINE_XEN_GUEST_HANDLE(xen_foreign_memory_map_t);
 
 #endif /* __XEN_PUBLIC_MEMORY_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
Index: head-2008-04-15/include/xen/interface/physdev.h
===================================================================
--- head-2008-04-15.orig/include/xen/interface/physdev.h	2008-04-15 09:41:09.000000000 +0200
+++ head-2008-04-15/include/xen/interface/physdev.h	2008-04-15 09:59:33.000000000 +0200
@@ -24,7 +24,7 @@
 /*
  * Prototype for this hypercall is:
  *  int physdev_op(int cmd, void *args)
- * @cmd	 == PHYSDEVOP_??? (physdev operation).
+ * @cmd  == PHYSDEVOP_??? (physdev operation).
  * @args == Operation-specific extra arguments (NULL if none).
  */
 
@@ -32,114 +32,142 @@
  * Notify end-of-interrupt (EOI) for the specified IRQ.
  * @arg == pointer to physdev_eoi structure.
  */
-#define PHYSDEVOP_eoi			12
+#define PHYSDEVOP_eoi                   12
 struct physdev_eoi {
-	/* IN */
-	uint32_t irq;
+    /* IN */
+    uint32_t irq;
 };
+typedef struct physdev_eoi physdev_eoi_t;
+DEFINE_XEN_GUEST_HANDLE(physdev_eoi_t);
 
 /*
  * Query the status of an IRQ line.
  * @arg == pointer to physdev_irq_status_query structure.
  */
-#define PHYSDEVOP_irq_status_query	 5
+#define PHYSDEVOP_irq_status_query       5
 struct physdev_irq_status_query {
-	/* IN */
-	uint32_t irq;
-	/* OUT */
-	uint32_t flags; /* XENIRQSTAT_* */
+    /* IN */
+    uint32_t irq;
+    /* OUT */
+    uint32_t flags; /* XENIRQSTAT_* */
 };
+typedef struct physdev_irq_status_query physdev_irq_status_query_t;
+DEFINE_XEN_GUEST_HANDLE(physdev_irq_status_query_t);
 
 /* Need to call PHYSDEVOP_eoi when the IRQ has been serviced? */
-#define _XENIRQSTAT_needs_eoi	(0)
-#define	 XENIRQSTAT_needs_eoi	(1U<<_XENIRQSTAT_needs_eoi)
+#define _XENIRQSTAT_needs_eoi   (0)
+#define  XENIRQSTAT_needs_eoi   (1U<<_XENIRQSTAT_needs_eoi)
 
 /* IRQ shared by multiple guests? */
-#define _XENIRQSTAT_shared	(1)
-#define	 XENIRQSTAT_shared	(1U<<_XENIRQSTAT_shared)
+#define _XENIRQSTAT_shared      (1)
+#define  XENIRQSTAT_shared      (1U<<_XENIRQSTAT_shared)
 
 /*
  * Set the current VCPU's I/O privilege level.
  * @arg == pointer to physdev_set_iopl structure.
  */
-#define PHYSDEVOP_set_iopl		 6
+#define PHYSDEVOP_set_iopl               6
 struct physdev_set_iopl {
-	/* IN */
-	uint32_t iopl;
+    /* IN */
+    uint32_t iopl;
 };
+typedef struct physdev_set_iopl physdev_set_iopl_t;
+DEFINE_XEN_GUEST_HANDLE(physdev_set_iopl_t);
 
 /*
  * Set the current VCPU's I/O-port permissions bitmap.
  * @arg == pointer to physdev_set_iobitmap structure.
  */
-#define PHYSDEVOP_set_iobitmap		 7
+#define PHYSDEVOP_set_iobitmap           7
 struct physdev_set_iobitmap {
-	/* IN */
-	uint8_t * bitmap;
-	uint32_t nr_ports;
+    /* IN */
+#if __XEN_INTERFACE_VERSION__ >= 0x00030205
+    XEN_GUEST_HANDLE(uint8) bitmap;
+#else
+    uint8_t *bitmap;
+#endif
+    uint32_t nr_ports;
 };
+typedef struct physdev_set_iobitmap physdev_set_iobitmap_t;
+DEFINE_XEN_GUEST_HANDLE(physdev_set_iobitmap_t);
 
 /*
  * Read or write an IO-APIC register.
  * @arg == pointer to physdev_apic structure.
  */
-#define PHYSDEVOP_apic_read		 8
-#define PHYSDEVOP_apic_write		 9
+#define PHYSDEVOP_apic_read              8
+#define PHYSDEVOP_apic_write             9
 struct physdev_apic {
-	/* IN */
-	unsigned long apic_physbase;
-	uint32_t reg;
-	/* IN or OUT */
-	uint32_t value;
+    /* IN */
+    unsigned long apic_physbase;
+    uint32_t reg;
+    /* IN or OUT */
+    uint32_t value;
 };
+typedef struct physdev_apic physdev_apic_t;
+DEFINE_XEN_GUEST_HANDLE(physdev_apic_t);
 
 /*
  * Allocate or free a physical upcall vector for the specified IRQ line.
  * @arg == pointer to physdev_irq structure.
  */
-#define PHYSDEVOP_alloc_irq_vector	10
-#define PHYSDEVOP_free_irq_vector	11
+#define PHYSDEVOP_alloc_irq_vector      10
+#define PHYSDEVOP_free_irq_vector       11
 struct physdev_irq {
-	/* IN */
-	uint32_t irq;
-	/* IN or OUT */
-	uint32_t vector;
+    /* IN */
+    uint32_t irq;
+    /* IN or OUT */
+    uint32_t vector;
 };
+typedef struct physdev_irq physdev_irq_t;
+DEFINE_XEN_GUEST_HANDLE(physdev_irq_t);
 
 /*
  * Argument to physdev_op_compat() hypercall. Superceded by new physdev_op()
  * hypercall since 0x00030202.
  */
 struct physdev_op {
-	uint32_t cmd;
-	union {
-		struct physdev_irq_status_query	     irq_status_query;
-		struct physdev_set_iopl		     set_iopl;
-		struct physdev_set_iobitmap	     set_iobitmap;
-		struct physdev_apic		     apic_op;
-		struct physdev_irq		     irq_op;
-	} u;
+    uint32_t cmd;
+    union {
+        struct physdev_irq_status_query      irq_status_query;
+        struct physdev_set_iopl              set_iopl;
+        struct physdev_set_iobitmap          set_iobitmap;
+        struct physdev_apic                  apic_op;
+        struct physdev_irq                   irq_op;
+    } u;
 };
+typedef struct physdev_op physdev_op_t;
+DEFINE_XEN_GUEST_HANDLE(physdev_op_t);
 
 /*
  * Notify that some PIRQ-bound event channels have been unmasked.
  * ** This command is obsolete since interface version 0x00030202 and is **
- * ** unsupported by newer versions of Xen.				 **
+ * ** unsupported by newer versions of Xen.                              **
  */
-#define PHYSDEVOP_IRQ_UNMASK_NOTIFY	 4
+#define PHYSDEVOP_IRQ_UNMASK_NOTIFY      4
 
 /*
  * These all-capitals physdev operation names are superceded by the new names
  * (defined above) since interface version 0x00030202.
  */
-#define PHYSDEVOP_IRQ_STATUS_QUERY	 PHYSDEVOP_irq_status_query
-#define PHYSDEVOP_SET_IOPL		 PHYSDEVOP_set_iopl
-#define PHYSDEVOP_SET_IOBITMAP		 PHYSDEVOP_set_iobitmap
-#define PHYSDEVOP_APIC_READ		 PHYSDEVOP_apic_read
-#define PHYSDEVOP_APIC_WRITE		 PHYSDEVOP_apic_write
-#define PHYSDEVOP_ASSIGN_VECTOR		 PHYSDEVOP_alloc_irq_vector
-#define PHYSDEVOP_FREE_VECTOR		 PHYSDEVOP_free_irq_vector
+#define PHYSDEVOP_IRQ_STATUS_QUERY       PHYSDEVOP_irq_status_query
+#define PHYSDEVOP_SET_IOPL               PHYSDEVOP_set_iopl
+#define PHYSDEVOP_SET_IOBITMAP           PHYSDEVOP_set_iobitmap
+#define PHYSDEVOP_APIC_READ              PHYSDEVOP_apic_read
+#define PHYSDEVOP_APIC_WRITE             PHYSDEVOP_apic_write
+#define PHYSDEVOP_ASSIGN_VECTOR          PHYSDEVOP_alloc_irq_vector
+#define PHYSDEVOP_FREE_VECTOR            PHYSDEVOP_free_irq_vector
 #define PHYSDEVOP_IRQ_NEEDS_UNMASK_NOTIFY XENIRQSTAT_needs_eoi
-#define PHYSDEVOP_IRQ_SHARED		 XENIRQSTAT_shared
+#define PHYSDEVOP_IRQ_SHARED             XENIRQSTAT_shared
 
 #endif /* __XEN_PUBLIC_PHYSDEV_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
Index: head-2008-04-15/include/xen/interface/sched.h
===================================================================
--- head-2008-04-15.orig/include/xen/interface/sched.h	2008-04-15 09:41:09.000000000 +0200
+++ head-2008-04-15/include/xen/interface/sched.h	2008-04-15 09:59:33.000000000 +0200
@@ -1,7 +1,25 @@
 /******************************************************************************
  * sched.h
- *
+ * 
  * Scheduler state interactions
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
  *
  * Copyright (c) 2005, Keir Fraser <keir@xensource.com>
  */
@@ -13,17 +31,17 @@
 
 /*
  * The prototype for this hypercall is:
- *  long sched_op_new(int cmd, void *arg)
+ *  long sched_op(int cmd, void *arg)
  * @cmd == SCHEDOP_??? (scheduler operation).
  * @arg == Operation-specific extra argument(s), as described below.
- *
- * **NOTE**:
- * Versions of Xen prior to 3.0.2 provide only the following legacy version
+ * 
+ * Versions of Xen prior to 3.0.2 provided only the following legacy version
  * of this hypercall, supporting only the commands yield, block and shutdown:
  *  long sched_op(int cmd, unsigned long arg)
  * @cmd == SCHEDOP_??? (scheduler operation).
  * @arg == 0               (SCHEDOP_yield and SCHEDOP_block)
  *      == SHUTDOWN_* code (SCHEDOP_shutdown)
+ * This legacy version is available to new guests as sched_op_compat().
  */
 
 /*
@@ -49,7 +67,8 @@
 struct sched_shutdown {
     unsigned int reason; /* SHUTDOWN_* */
 };
-DEFINE_GUEST_HANDLE_STRUCT(sched_shutdown);
+typedef struct sched_shutdown sched_shutdown_t;
+DEFINE_XEN_GUEST_HANDLE(sched_shutdown_t);
 
 /*
  * Poll a set of event-channel ports. Return when one or more are pending. An
@@ -58,11 +77,26 @@ DEFINE_GUEST_HANDLE_STRUCT(sched_shutdow
  */
 #define SCHEDOP_poll        3
 struct sched_poll {
-    GUEST_HANDLE(evtchn_port_t) ports;
+    XEN_GUEST_HANDLE(evtchn_port_t) ports;
     unsigned int nr_ports;
     uint64_t timeout;
 };
-DEFINE_GUEST_HANDLE_STRUCT(sched_poll);
+typedef struct sched_poll sched_poll_t;
+DEFINE_XEN_GUEST_HANDLE(sched_poll_t);
+
+/*
+ * Declare a shutdown for another domain. The main use of this function is
+ * in interpreting shutdown requests and reasons for fully-virtualized
+ * domains.  A para-virtualized domain may use SCHEDOP_shutdown directly.
+ * @arg == pointer to sched_remote_shutdown structure.
+ */
+#define SCHEDOP_remote_shutdown        4
+struct sched_remote_shutdown {
+    domid_t domain_id;         /* Remote domain ID */
+    unsigned int reason;       /* SHUTDOWN_xxx reason */
+};
+typedef struct sched_remote_shutdown sched_remote_shutdown_t;
+DEFINE_XEN_GUEST_HANDLE(sched_remote_shutdown_t);
 
 /*
  * Reason codes for SCHEDOP_shutdown. These may be interpreted by control
@@ -75,3 +109,13 @@ DEFINE_GUEST_HANDLE_STRUCT(sched_poll);
 #define SHUTDOWN_crash      3  /* Tell controller we've crashed.             */
 
 #endif /* __XEN_PUBLIC_SCHED_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
Index: head-2008-04-15/include/xen/interface/vcpu.h
===================================================================
--- head-2008-04-15.orig/include/xen/interface/vcpu.h	2008-04-15 09:41:09.000000000 +0200
+++ head-2008-04-15/include/xen/interface/vcpu.h	2008-04-15 09:59:33.000000000 +0200
@@ -1,8 +1,8 @@
 /******************************************************************************
  * vcpu.h
- *
+ * 
  * VCPU initialisation, query, and hotplug.
- *
+ * 
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to
  * deal in the Software without restriction, including without limitation the
@@ -29,62 +29,64 @@
 
 /*
  * Prototype for this hypercall is:
- *	int vcpu_op(int cmd, int vcpuid, void *extra_args)
- * @cmd		   == VCPUOP_??? (VCPU operation).
- * @vcpuid	   == VCPU to operate on.
+ *  int vcpu_op(int cmd, int vcpuid, void *extra_args)
+ * @cmd        == VCPUOP_??? (VCPU operation).
+ * @vcpuid     == VCPU to operate on.
  * @extra_args == Operation-specific extra arguments (NULL if none).
  */
 
 /*
- * Initialise a VCPU. Each VCPU can be initialised only once. A
+ * Initialise a VCPU. Each VCPU can be initialised only once. A 
  * newly-initialised VCPU will not run until it is brought up by VCPUOP_up.
- *
+ * 
  * @extra_arg == pointer to vcpu_guest_context structure containing initial
- *				 state for the VCPU.
+ *               state for the VCPU.
  */
-#define VCPUOP_initialise			 0
+#define VCPUOP_initialise            0
 
 /*
  * Bring up a VCPU. This makes the VCPU runnable. This operation will fail
  * if the VCPU has not been initialised (VCPUOP_initialise).
  */
-#define VCPUOP_up					 1
+#define VCPUOP_up                    1
 
 /*
  * Bring down a VCPU (i.e., make it non-runnable).
  * There are a few caveats that callers should observe:
- *	1. This operation may return, and VCPU_is_up may return false, before the
- *	   VCPU stops running (i.e., the command is asynchronous). It is a good
- *	   idea to ensure that the VCPU has entered a non-critical loop before
- *	   bringing it down. Alternatively, this operation is guaranteed
- *	   synchronous if invoked by the VCPU itself.
- *	2. After a VCPU is initialised, there is currently no way to drop all its
- *	   references to domain memory. Even a VCPU that is down still holds
- *	   memory references via its pagetable base pointer and GDT. It is good
- *	   practise to move a VCPU onto an 'idle' or default page table, LDT and
- *	   GDT before bringing it down.
+ *  1. This operation may return, and VCPU_is_up may return false, before the
+ *     VCPU stops running (i.e., the command is asynchronous). It is a good
+ *     idea to ensure that the VCPU has entered a non-critical loop before
+ *     bringing it down. Alternatively, this operation is guaranteed
+ *     synchronous if invoked by the VCPU itself.
+ *  2. After a VCPU is initialised, there is currently no way to drop all its
+ *     references to domain memory. Even a VCPU that is down still holds
+ *     memory references via its pagetable base pointer and GDT. It is good
+ *     practise to move a VCPU onto an 'idle' or default page table, LDT and
+ *     GDT before bringing it down.
  */
-#define VCPUOP_down					 2
+#define VCPUOP_down                  2
 
 /* Returns 1 if the given VCPU is up. */
-#define VCPUOP_is_up				 3
+#define VCPUOP_is_up                 3
 
 /*
  * Return information about the state and running time of a VCPU.
  * @extra_arg == pointer to vcpu_runstate_info structure.
  */
-#define VCPUOP_get_runstate_info	 4
+#define VCPUOP_get_runstate_info     4
 struct vcpu_runstate_info {
-		/* VCPU's current state (RUNSTATE_*). */
-		int		 state;
-		/* When was current state entered (system time, ns)? */
-		uint64_t state_entry_time;
-		/*
-		 * Time spent in each RUNSTATE_* (ns). The sum of these times is
-		 * guaranteed not to drift from system time.
-		 */
-		uint64_t time[4];
+    /* VCPU's current state (RUNSTATE_*). */
+    int      state;
+    /* When was current state entered (system time, ns)? */
+    uint64_t state_entry_time;
+    /*
+     * Time spent in each RUNSTATE_* (ns). The sum of these times is
+     * guaranteed not to drift from system time.
+     */
+    uint64_t time[4];
 };
+typedef struct vcpu_runstate_info vcpu_runstate_info_t;
+DEFINE_XEN_GUEST_HANDLE(vcpu_runstate_info_t);
 
 /* VCPU is currently running on a physical CPU. */
 #define RUNSTATE_running  0
@@ -107,62 +109,105 @@ struct vcpu_runstate_info {
  * Register a shared memory area from which the guest may obtain its own
  * runstate information without needing to execute a hypercall.
  * Notes:
- *	1. The registered address may be virtual or physical, depending on the
- *	   platform. The virtual address should be registered on x86 systems.
- *	2. Only one shared area may be registered per VCPU. The shared area is
- *	   updated by the hypervisor each time the VCPU is scheduled. Thus
- *	   runstate.state will always be RUNSTATE_running and
- *	   runstate.state_entry_time will indicate the system time at which the
- *	   VCPU was last scheduled to run.
+ *  1. The registered address may be virtual or physical or guest handle,
+ *     depending on the platform. Virtual address or guest handle should be
+ *     registered on x86 systems.
+ *  2. Only one shared area may be registered per VCPU. The shared area is
+ *     updated by the hypervisor each time the VCPU is scheduled. Thus
+ *     runstate.state will always be RUNSTATE_running and
+ *     runstate.state_entry_time will indicate the system time at which the
+ *     VCPU was last scheduled to run.
  * @extra_arg == pointer to vcpu_register_runstate_memory_area structure.
  */
 #define VCPUOP_register_runstate_memory_area 5
 struct vcpu_register_runstate_memory_area {
-		union {
-				struct vcpu_runstate_info *v;
-				uint64_t p;
-		} addr;
+    union {
+        XEN_GUEST_HANDLE(vcpu_runstate_info_t) h;
+        struct vcpu_runstate_info *v;
+        uint64_t p;
+    } addr;
 };
+typedef struct vcpu_register_runstate_memory_area vcpu_register_runstate_memory_area_t;
+DEFINE_XEN_GUEST_HANDLE(vcpu_register_runstate_memory_area_t);
 
 /*
  * Set or stop a VCPU's periodic timer. Every VCPU has one periodic timer
  * which can be set via these commands. Periods smaller than one millisecond
  * may not be supported.
  */
-#define VCPUOP_set_periodic_timer	 6 /* arg == vcpu_set_periodic_timer_t */
-#define VCPUOP_stop_periodic_timer	 7 /* arg == NULL */
+#define VCPUOP_set_periodic_timer    6 /* arg == vcpu_set_periodic_timer_t */
+#define VCPUOP_stop_periodic_timer   7 /* arg == NULL */
 struct vcpu_set_periodic_timer {
-		uint64_t period_ns;
+    uint64_t period_ns;
 };
+typedef struct vcpu_set_periodic_timer vcpu_set_periodic_timer_t;
+DEFINE_XEN_GUEST_HANDLE(vcpu_set_periodic_timer_t);
 
 /*
  * Set or stop a VCPU's single-shot timer. Every VCPU has one single-shot
  * timer which can be set via these commands.
  */
-#define VCPUOP_set_singleshot_timer	 8 /* arg == vcpu_set_singleshot_timer_t */
+#define VCPUOP_set_singleshot_timer  8 /* arg == vcpu_set_singleshot_timer_t */
 #define VCPUOP_stop_singleshot_timer 9 /* arg == NULL */
 struct vcpu_set_singleshot_timer {
-		uint64_t timeout_abs_ns;
-		uint32_t flags;			   /* VCPU_SSHOTTMR_??? */
+    uint64_t timeout_abs_ns;   /* Absolute system time value in nanoseconds. */
+    uint32_t flags;            /* VCPU_SSHOTTMR_??? */
 };
+typedef struct vcpu_set_singleshot_timer vcpu_set_singleshot_timer_t;
+DEFINE_XEN_GUEST_HANDLE(vcpu_set_singleshot_timer_t);
 
 /* Flags to VCPUOP_set_singleshot_timer. */
  /* Require the timeout to be in the future (return -ETIME if it's passed). */
 #define _VCPU_SSHOTTMR_future (0)
 #define VCPU_SSHOTTMR_future  (1U << _VCPU_SSHOTTMR_future)
 
-/*
+/* 
  * Register a memory location in the guest address space for the
  * vcpu_info structure.  This allows the guest to place the vcpu_info
  * structure in a convenient place, such as in a per-cpu data area.
  * The pointer need not be page aligned, but the structure must not
  * cross a page boundary.
+ *
+ * This may be called only once per vcpu.
  */
-#define VCPUOP_register_vcpu_info   10  /* arg == struct vcpu_info */
+#define VCPUOP_register_vcpu_info   10  /* arg == vcpu_register_vcpu_info_t */
 struct vcpu_register_vcpu_info {
     uint64_t mfn;    /* mfn of page to place vcpu_info */
     uint32_t offset; /* offset within page */
     uint32_t rsvd;   /* unused */
 };
+typedef struct vcpu_register_vcpu_info vcpu_register_vcpu_info_t;
+DEFINE_XEN_GUEST_HANDLE(vcpu_register_vcpu_info_t);
+
+/* Send an NMI to the specified VCPU. @extra_arg == NULL. */
+#define VCPUOP_send_nmi             11
+
+/* 
+ * Get the physical ID information for a pinned vcpu's underlying physical
+ * processor.  The physical ID informmation is architecture-specific.
+ * On x86: id[31:0]=apic_id, id[63:32]=acpi_id, and all values 0xff and
+ *         greater are reserved.
+ * This command returns -EINVAL if it is not a valid operation for this VCPU.
+ */
+#define VCPUOP_get_physid           12 /* arg == vcpu_get_physid_t */
+struct vcpu_get_physid {
+    uint64_t phys_id;
+};
+typedef struct vcpu_get_physid vcpu_get_physid_t;
+DEFINE_XEN_GUEST_HANDLE(vcpu_get_physid_t);
+#define xen_vcpu_physid_to_x86_apicid(physid) \
+    ((((uint32_t)(physid)) >= 0xff) ? 0xff : ((uint8_t)(physid)))
+#define xen_vcpu_physid_to_x86_acpiid(physid) \
+    ((((uint32_t)((physid)>>32)) >= 0xff) ? 0xff : ((uint8_t)((physid)>>32)))
 
 #endif /* __XEN_PUBLIC_VCPU_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
Index: head-2008-04-15/include/xen/interface/version.h
===================================================================
--- head-2008-04-15.orig/include/xen/interface/version.h	2008-04-15 09:41:09.000000000 +0200
+++ head-2008-04-15/include/xen/interface/version.h	2008-04-15 09:59:33.000000000 +0200
@@ -1,7 +1,25 @@
 /******************************************************************************
  * version.h
- *
+ * 
  * Xen version, type, and compile information.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
  *
  * Copyright (c) 2005, Nguyen Anh Quynh <aquynh@gmail.com>
  * Copyright (c) 2005, Keir Fraser <keir@xensource.com>
@@ -10,17 +28,15 @@
 #ifndef __XEN_PUBLIC_VERSION_H__
 #define __XEN_PUBLIC_VERSION_H__
 
-/* NB. All ops return zero on success, except XENVER_version. */
+/* NB. All ops return zero on success, except XENVER_{version,pagesize} */
 
 /* arg == NULL; returns major:minor (16:16). */
 #define XENVER_version      0
 
 /* arg == xen_extraversion_t. */
 #define XENVER_extraversion 1
-struct xen_extraversion {
-    char extraversion[16];
-};
-#define XEN_EXTRAVERSION_LEN (sizeof(struct xen_extraversion))
+typedef char xen_extraversion_t[16];
+#define XEN_EXTRAVERSION_LEN (sizeof(xen_extraversion_t))
 
 /* arg == xen_compile_info_t. */
 #define XENVER_compile_info 2
@@ -30,31 +46,46 @@ struct xen_compile_info {
     char compile_domain[32];
     char compile_date[32];
 };
+typedef struct xen_compile_info xen_compile_info_t;
 
 #define XENVER_capabilities 3
-struct xen_capabilities_info {
-    char info[1024];
-};
-#define XEN_CAPABILITIES_INFO_LEN (sizeof(struct xen_capabilities_info))
+typedef char xen_capabilities_info_t[1024];
+#define XEN_CAPABILITIES_INFO_LEN (sizeof(xen_capabilities_info_t))
 
 #define XENVER_changeset 4
-struct xen_changeset_info {
-    char info[64];
-};
-#define XEN_CHANGESET_INFO_LEN (sizeof(struct xen_changeset_info))
+typedef char xen_changeset_info_t[64];
+#define XEN_CHANGESET_INFO_LEN (sizeof(xen_changeset_info_t))
 
 #define XENVER_platform_parameters 5
 struct xen_platform_parameters {
     unsigned long virt_start;
 };
+typedef struct xen_platform_parameters xen_platform_parameters_t;
 
 #define XENVER_get_features 6
 struct xen_feature_info {
     unsigned int submap_idx;    /* IN: which 32-bit submap to return */
     uint32_t     submap;        /* OUT: 32-bit submap */
 };
+typedef struct xen_feature_info xen_feature_info_t;
 
 /* Declares the features reported by XENVER_get_features. */
 #include "features.h"
 
+/* arg == NULL; returns host memory page size. */
+#define XENVER_pagesize 7
+
+/* arg == xen_domain_handle_t. */
+#define XENVER_guest_handle 8
+
 #endif /* __XEN_PUBLIC_VERSION_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
Index: head-2008-04-15/include/xen/interface/xen.h
===================================================================
--- head-2008-04-15.orig/include/xen/interface/xen.h	2008-04-15 09:41:09.000000000 +0200
+++ head-2008-04-15/include/xen/interface/xen.h	2008-04-15 09:59:33.000000000 +0200
@@ -1,7 +1,25 @@
 /******************************************************************************
  * xen.h
- *
+ * 
  * Guest OS interface to Xen.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
  *
  * Copyright (c) 2004, K A Fraser
  */
@@ -9,28 +27,43 @@
 #ifndef __XEN_PUBLIC_XEN_H__
 #define __XEN_PUBLIC_XEN_H__
 
-#include <asm/xen/interface.h>
+#include "xen-compat.h"
 
-/*
- * XEN "SYSTEM CALLS" (a.k.a. HYPERCALLS).
- */
+#if defined(__i386__) || defined(__x86_64__)
+#include "arch-x86/xen.h"
+#elif defined(__ia64__)
+#include "arch-ia64.h"
+#elif defined(__powerpc__)
+#include "arch-powerpc.h"
+#else
+#error "Unsupported architecture"
+#endif
+
+#ifndef __ASSEMBLY__
+/* Guest handles for primitive C types. */
+DEFINE_XEN_GUEST_HANDLE(char);
+__DEFINE_XEN_GUEST_HANDLE(uchar, unsigned char);
+DEFINE_XEN_GUEST_HANDLE(int);
+__DEFINE_XEN_GUEST_HANDLE(uint,  unsigned int);
+DEFINE_XEN_GUEST_HANDLE(long);
+__DEFINE_XEN_GUEST_HANDLE(ulong, unsigned long);
+DEFINE_XEN_GUEST_HANDLE(void);
+
+DEFINE_XEN_GUEST_HANDLE(xen_pfn_t);
+#endif
 
 /*
- * x86_32: EAX = vector; EBX, ECX, EDX, ESI, EDI = args 1, 2, 3, 4, 5.
- *         EAX = return value
- *         (argument registers may be clobbered on return)
- * x86_64: RAX = vector; RDI, RSI, RDX, R10, R8, R9 = args 1, 2, 3, 4, 5, 6.
- *         RAX = return value
- *         (argument registers not clobbered on return; RCX, R11 are)
+ * HYPERCALLS
  */
+
 #define __HYPERVISOR_set_trap_table        0
 #define __HYPERVISOR_mmu_update            1
 #define __HYPERVISOR_set_gdt               2
 #define __HYPERVISOR_stack_switch          3
 #define __HYPERVISOR_set_callbacks         4
 #define __HYPERVISOR_fpu_taskswitch        5
-#define __HYPERVISOR_sched_op              6
-#define __HYPERVISOR_dom0_op               7
+#define __HYPERVISOR_sched_op_compat       6 /* compat since 0x00030101 */
+#define __HYPERVISOR_platform_op           7
 #define __HYPERVISOR_set_debugreg          8
 #define __HYPERVISOR_get_debugreg          9
 #define __HYPERVISOR_update_descriptor    10
@@ -38,10 +71,10 @@
 #define __HYPERVISOR_multicall            13
 #define __HYPERVISOR_update_va_mapping    14
 #define __HYPERVISOR_set_timer_op         15
-#define __HYPERVISOR_event_channel_op_compat 16
+#define __HYPERVISOR_event_channel_op_compat 16 /* compat since 0x00030202 */
 #define __HYPERVISOR_xen_version          17
 #define __HYPERVISOR_console_io           18
-#define __HYPERVISOR_physdev_op_compat    19
+#define __HYPERVISOR_physdev_op_compat    19 /* compat since 0x00030202 */
 #define __HYPERVISOR_grant_table_op       20
 #define __HYPERVISOR_vm_assist            21
 #define __HYPERVISOR_update_va_mapping_otherdomain 22
@@ -49,35 +82,90 @@
 #define __HYPERVISOR_vcpu_op              24
 #define __HYPERVISOR_set_segment_base     25 /* x86/64 only */
 #define __HYPERVISOR_mmuext_op            26
-#define __HYPERVISOR_acm_op               27
+#define __HYPERVISOR_xsm_op               27
 #define __HYPERVISOR_nmi_op               28
-#define __HYPERVISOR_sched_op_new         29
+#define __HYPERVISOR_sched_op             29
 #define __HYPERVISOR_callback_op          30
 #define __HYPERVISOR_xenoprof_op          31
 #define __HYPERVISOR_event_channel_op     32
 #define __HYPERVISOR_physdev_op           33
 #define __HYPERVISOR_hvm_op               34
+#define __HYPERVISOR_sysctl               35
+#define __HYPERVISOR_domctl               36
+#define __HYPERVISOR_kexec_op             37
+
+/* Architecture-specific hypercall definitions. */
+#define __HYPERVISOR_arch_0               48
+#define __HYPERVISOR_arch_1               49
+#define __HYPERVISOR_arch_2               50
+#define __HYPERVISOR_arch_3               51
+#define __HYPERVISOR_arch_4               52
+#define __HYPERVISOR_arch_5               53
+#define __HYPERVISOR_arch_6               54
+#define __HYPERVISOR_arch_7               55
+
+/*
+ * HYPERCALL COMPATIBILITY.
+ */
+
+/* New sched_op hypercall introduced in 0x00030101. */
+#if __XEN_INTERFACE_VERSION__ < 0x00030101
+#undef __HYPERVISOR_sched_op
+#define __HYPERVISOR_sched_op __HYPERVISOR_sched_op_compat
+#endif
 
-/*
+/* New event-channel and physdev hypercalls introduced in 0x00030202. */
+#if __XEN_INTERFACE_VERSION__ < 0x00030202
+#undef __HYPERVISOR_event_channel_op
+#define __HYPERVISOR_event_channel_op __HYPERVISOR_event_channel_op_compat
+#undef __HYPERVISOR_physdev_op
+#define __HYPERVISOR_physdev_op __HYPERVISOR_physdev_op_compat
+#endif
+
+/* New platform_op hypercall introduced in 0x00030204. */
+#if __XEN_INTERFACE_VERSION__ < 0x00030204
+#define __HYPERVISOR_dom0_op __HYPERVISOR_platform_op
+#endif
+
+/* 
  * VIRTUAL INTERRUPTS
- *
+ * 
  * Virtual interrupts that a guest OS may receive from Xen.
- */
-#define VIRQ_TIMER      0  /* Timebase update, and/or requested timeout.  */
-#define VIRQ_DEBUG      1  /* Request guest to dump debug info.           */
-#define VIRQ_CONSOLE    2  /* (DOM0) Bytes received on emergency console. */
-#define VIRQ_DOM_EXC    3  /* (DOM0) Exceptional event for some domain.   */
-#define VIRQ_DEBUGGER   6  /* (DOM0) A domain has paused for debugging.   */
-#define NR_VIRQS        8
+ * 
+ * In the side comments, 'V.' denotes a per-VCPU VIRQ while 'G.' denotes a
+ * global VIRQ. The former can be bound once per VCPU and cannot be re-bound.
+ * The latter can be allocated only once per guest: they must initially be
+ * allocated to VCPU0 but can subsequently be re-bound.
+ */
+#define VIRQ_TIMER      0  /* V. Timebase update, and/or requested timeout.  */
+#define VIRQ_DEBUG      1  /* V. Request guest to dump debug info.           */
+#define VIRQ_CONSOLE    2  /* G. (DOM0) Bytes received on emergency console. */
+#define VIRQ_DOM_EXC    3  /* G. (DOM0) Exceptional event for some domain.   */
+#define VIRQ_TBUF       4  /* G. (DOM0) Trace buffer has records available.  */
+#define VIRQ_DEBUGGER   6  /* G. (DOM0) A domain has paused for debugging.   */
+#define VIRQ_XENOPROF   7  /* V. XenOprofile interrupt: new sample available */
+#define VIRQ_CON_RING   8  /* G. (DOM0) Bytes received on console            */
+
+/* Architecture-specific VIRQ definitions. */
+#define VIRQ_ARCH_0    16
+#define VIRQ_ARCH_1    17
+#define VIRQ_ARCH_2    18
+#define VIRQ_ARCH_3    19
+#define VIRQ_ARCH_4    20
+#define VIRQ_ARCH_5    21
+#define VIRQ_ARCH_6    22
+#define VIRQ_ARCH_7    23
+
+#define NR_VIRQS       24
 
 /*
  * MMU-UPDATE REQUESTS
- *
+ * 
  * HYPERVISOR_mmu_update() accepts a list of (ptr, val) pairs.
  * A foreigndom (FD) can be specified (or DOMID_SELF for none).
  * Where the FD has some effect, it is described below.
  * ptr[1:0] specifies the appropriate MMU_* command.
- *
+ * 
  * ptr[1:0] == MMU_NORMAL_PT_UPDATE:
  * Updates an entry in a page table. If updating an L1 table, and the new
  * table entry is valid/present, the mapped frame must belong to the FD, if
@@ -87,56 +175,61 @@
  * FD == DOMID_XEN: Map restricted areas of Xen's heap space.
  * ptr[:2]  -- Machine address of the page-table entry to modify.
  * val      -- Value to write.
- *
+ * 
  * ptr[1:0] == MMU_MACHPHYS_UPDATE:
  * Updates an entry in the machine->pseudo-physical mapping table.
  * ptr[:2]  -- Machine address within the frame whose mapping to modify.
  *             The frame must belong to the FD, if one is specified.
  * val      -- Value to write into the mapping entry.
- */
-#define MMU_NORMAL_PT_UPDATE     0 /* checked '*ptr = val'. ptr is MA.       */
-#define MMU_MACHPHYS_UPDATE      1 /* ptr = MA of frame to modify entry for  */
+ * 
+ * ptr[1:0] == MMU_PT_UPDATE_PRESERVE_AD:
+ * As MMU_NORMAL_PT_UPDATE above, but A/D bits currently in the PTE are ORed
+ * with those in @val.
+ */
+#define MMU_NORMAL_PT_UPDATE      0 /* checked '*ptr = val'. ptr is MA.      */
+#define MMU_MACHPHYS_UPDATE       1 /* ptr = MA of frame to modify entry for */
+#define MMU_PT_UPDATE_PRESERVE_AD 2 /* atomically: *ptr = val | (*ptr&(A|D)) */
 
 /*
  * MMU EXTENDED OPERATIONS
- *
+ * 
  * HYPERVISOR_mmuext_op() accepts a list of mmuext_op structures.
  * A foreigndom (FD) can be specified (or DOMID_SELF for none).
  * Where the FD has some effect, it is described below.
- *
+ * 
  * cmd: MMUEXT_(UN)PIN_*_TABLE
  * mfn: Machine frame number to be (un)pinned as a p.t. page.
  *      The frame must belong to the FD, if one is specified.
- *
+ * 
  * cmd: MMUEXT_NEW_BASEPTR
  * mfn: Machine frame number of new page-table base to install in MMU.
- *
+ * 
  * cmd: MMUEXT_NEW_USER_BASEPTR [x86/64 only]
  * mfn: Machine frame number of new page-table base to install in MMU
  *      when in user space.
- *
+ * 
  * cmd: MMUEXT_TLB_FLUSH_LOCAL
  * No additional arguments. Flushes local TLB.
- *
+ * 
  * cmd: MMUEXT_INVLPG_LOCAL
  * linear_addr: Linear address to be flushed from the local TLB.
- *
+ * 
  * cmd: MMUEXT_TLB_FLUSH_MULTI
  * vcpumask: Pointer to bitmap of VCPUs to be flushed.
- *
+ * 
  * cmd: MMUEXT_INVLPG_MULTI
  * linear_addr: Linear address to be flushed.
  * vcpumask: Pointer to bitmap of VCPUs to be flushed.
- *
+ * 
  * cmd: MMUEXT_TLB_FLUSH_ALL
  * No additional arguments. Flushes all VCPUs' TLBs.
- *
+ * 
  * cmd: MMUEXT_INVLPG_ALL
  * linear_addr: Linear address to be flushed from all VCPUs' TLBs.
- *
+ * 
  * cmd: MMUEXT_FLUSH_CACHE
  * No additional arguments. Writes back and flushes cache contents.
- *
+ * 
  * cmd: MMUEXT_SET_LDT
  * linear_addr: Linear address of LDT base (NB. must be page-aligned).
  * nr_ents: Number of entries in LDT.
@@ -159,21 +252,26 @@
 
 #ifndef __ASSEMBLY__
 struct mmuext_op {
-	unsigned int cmd;
-	union {
-		/* [UN]PIN_TABLE, NEW_BASEPTR, NEW_USER_BASEPTR */
-		unsigned long mfn;
-		/* INVLPG_LOCAL, INVLPG_ALL, SET_LDT */
-		unsigned long linear_addr;
-	} arg1;
-	union {
-		/* SET_LDT */
-		unsigned int nr_ents;
-		/* TLB_FLUSH_MULTI, INVLPG_MULTI */
-		void *vcpumask;
-	} arg2;
+    unsigned int cmd;
+    union {
+        /* [UN]PIN_TABLE, NEW_BASEPTR, NEW_USER_BASEPTR */
+        xen_pfn_t     mfn;
+        /* INVLPG_LOCAL, INVLPG_ALL, SET_LDT */
+        unsigned long linear_addr;
+    } arg1;
+    union {
+        /* SET_LDT */
+        unsigned int nr_ents;
+        /* TLB_FLUSH_MULTI, INVLPG_MULTI */
+#if __XEN_INTERFACE_VERSION__ >= 0x00030205
+        XEN_GUEST_HANDLE(void) vcpumask;
+#else
+        void *vcpumask;
+#endif
+    } arg2;
 };
-DEFINE_GUEST_HANDLE_STRUCT(mmuext_op);
+typedef struct mmuext_op mmuext_op_t;
+DEFINE_XEN_GUEST_HANDLE(mmuext_op_t);
 #endif
 
 /* These are passed as 'flags' to update_va_mapping. They can be ORed. */
@@ -198,11 +296,24 @@ DEFINE_GUEST_HANDLE_STRUCT(mmuext_op);
  */
 #define VMASST_CMD_enable                0
 #define VMASST_CMD_disable               1
+
+/* x86/32 guests: simulate full 4GB segment limits. */
 #define VMASST_TYPE_4gb_segments         0
+
+/* x86/32 guests: trap (vector 15) whenever above vmassist is used. */
 #define VMASST_TYPE_4gb_segments_notify  1
+
+/*
+ * x86 guests: support writes to bottom-level PTEs.
+ * NB1. Page-directory entries cannot be written.
+ * NB2. Guest must continue to remove all writable mappings of PTEs.
+ */
 #define VMASST_TYPE_writable_pagetables  2
+
+/* x86/PAE guests: support PDPTs above 4GB. */
 #define VMASST_TYPE_pae_extended_cr3     3
-#define MAX_VMASST_TYPE 3
+
+#define MAX_VMASST_TYPE                  3
 
 #ifndef __ASSEMBLY__
 
@@ -241,18 +352,19 @@ struct mmu_update {
     uint64_t ptr;       /* Machine address of PTE. */
     uint64_t val;       /* New contents of PTE.    */
 };
-DEFINE_GUEST_HANDLE_STRUCT(mmu_update);
+typedef struct mmu_update mmu_update_t;
+DEFINE_XEN_GUEST_HANDLE(mmu_update_t);
 
 /*
  * Send an array of these to HYPERVISOR_multicall().
  * NB. The fields are natural register size for this architecture.
  */
 struct multicall_entry {
-    unsigned long op;
-    long result;
+    unsigned long op, result;
     unsigned long args[6];
 };
-DEFINE_GUEST_HANDLE_STRUCT(multicall_entry);
+typedef struct multicall_entry multicall_entry_t;
+DEFINE_XEN_GUEST_HANDLE(multicall_entry_t);
 
 /*
  * Event channel endpoints per domain:
@@ -261,175 +373,231 @@ DEFINE_GUEST_HANDLE_STRUCT(multicall_ent
 #define NR_EVENT_CHANNELS (sizeof(unsigned long) * sizeof(unsigned long) * 64)
 
 struct vcpu_time_info {
-	/*
-	 * Updates to the following values are preceded and followed
-	 * by an increment of 'version'. The guest can therefore
-	 * detect updates by looking for changes to 'version'. If the
-	 * least-significant bit of the version number is set then an
-	 * update is in progress and the guest must wait to read a
-	 * consistent set of values.  The correct way to interact with
-	 * the version number is similar to Linux's seqlock: see the
-	 * implementations of read_seqbegin/read_seqretry.
-	 */
-	uint32_t version;
-	uint32_t pad0;
-	uint64_t tsc_timestamp;   /* TSC at last update of time vals.  */
-	uint64_t system_time;     /* Time, in nanosecs, since boot.    */
-	/*
-	 * Current system time:
-	 *   system_time + ((tsc - tsc_timestamp) << tsc_shift) * tsc_to_system_mul
-	 * CPU frequency (Hz):
-	 *   ((10^9 << 32) / tsc_to_system_mul) >> tsc_shift
-	 */
-	uint32_t tsc_to_system_mul;
-	int8_t   tsc_shift;
-	int8_t   pad1[3];
+    /*
+     * Updates to the following values are preceded and followed by an
+     * increment of 'version'. The guest can therefore detect updates by
+     * looking for changes to 'version'. If the least-significant bit of
+     * the version number is set then an update is in progress and the guest
+     * must wait to read a consistent set of values.
+     * The correct way to interact with the version number is similar to
+     * Linux's seqlock: see the implementations of read_seqbegin/read_seqretry.
+     */
+    uint32_t version;
+    uint32_t pad0;
+    uint64_t tsc_timestamp;   /* TSC at last update of time vals.  */
+    uint64_t system_time;     /* Time, in nanosecs, since boot.    */
+    /*
+     * Current system time:
+     *   system_time +
+     *   ((((tsc - tsc_timestamp) << tsc_shift) * tsc_to_system_mul) >> 32)
+     * CPU frequency (Hz):
+     *   ((10^9 << 32) / tsc_to_system_mul) >> tsc_shift
+     */
+    uint32_t tsc_to_system_mul;
+    int8_t   tsc_shift;
+    int8_t   pad1[3];
 }; /* 32 bytes */
+typedef struct vcpu_time_info vcpu_time_info_t;
 
 struct vcpu_info {
-	/*
-	 * 'evtchn_upcall_pending' is written non-zero by Xen to indicate
-	 * a pending notification for a particular VCPU. It is then cleared
-	 * by the guest OS /before/ checking for pending work, thus avoiding
-	 * a set-and-check race. Note that the mask is only accessed by Xen
-	 * on the CPU that is currently hosting the VCPU. This means that the
-	 * pending and mask flags can be updated by the guest without special
-	 * synchronisation (i.e., no need for the x86 LOCK prefix).
-	 * This may seem suboptimal because if the pending flag is set by
-	 * a different CPU then an IPI may be scheduled even when the mask
-	 * is set. However, note:
-	 *  1. The task of 'interrupt holdoff' is covered by the per-event-
-	 *     channel mask bits. A 'noisy' event that is continually being
-	 *     triggered can be masked at source at this very precise
-	 *     granularity.
-	 *  2. The main purpose of the per-VCPU mask is therefore to restrict
-	 *     reentrant execution: whether for concurrency control, or to
-	 *     prevent unbounded stack usage. Whatever the purpose, we expect
-	 *     that the mask will be asserted only for short periods at a time,
-	 *     and so the likelihood of a 'spurious' IPI is suitably small.
-	 * The mask is read before making an event upcall to the guest: a
-	 * non-zero mask therefore guarantees that the VCPU will not receive
-	 * an upcall activation. The mask is cleared when the VCPU requests
-	 * to block: this avoids wakeup-waiting races.
-	 */
-	uint8_t evtchn_upcall_pending;
-	uint8_t evtchn_upcall_mask;
-	unsigned long evtchn_pending_sel;
-	struct arch_vcpu_info arch;
-	struct vcpu_time_info time;
+    /*
+     * 'evtchn_upcall_pending' is written non-zero by Xen to indicate
+     * a pending notification for a particular VCPU. It is then cleared 
+     * by the guest OS /before/ checking for pending work, thus avoiding
+     * a set-and-check race. Note that the mask is only accessed by Xen
+     * on the CPU that is currently hosting the VCPU. This means that the
+     * pending and mask flags can be updated by the guest without special
+     * synchronisation (i.e., no need for the x86 LOCK prefix).
+     * This may seem suboptimal because if the pending flag is set by
+     * a different CPU then an IPI may be scheduled even when the mask
+     * is set. However, note:
+     *  1. The task of 'interrupt holdoff' is covered by the per-event-
+     *     channel mask bits. A 'noisy' event that is continually being
+     *     triggered can be masked at source at this very precise
+     *     granularity.
+     *  2. The main purpose of the per-VCPU mask is therefore to restrict
+     *     reentrant execution: whether for concurrency control, or to
+     *     prevent unbounded stack usage. Whatever the purpose, we expect
+     *     that the mask will be asserted only for short periods at a time,
+     *     and so the likelihood of a 'spurious' IPI is suitably small.
+     * The mask is read before making an event upcall to the guest: a
+     * non-zero mask therefore guarantees that the VCPU will not receive
+     * an upcall activation. The mask is cleared when the VCPU requests
+     * to block: this avoids wakeup-waiting races.
+     */
+    uint8_t evtchn_upcall_pending;
+    uint8_t evtchn_upcall_mask;
+    unsigned long evtchn_pending_sel;
+    struct arch_vcpu_info arch;
+    struct vcpu_time_info time;
 }; /* 64 bytes (x86) */
+#ifndef __XEN__
+typedef struct vcpu_info vcpu_info_t;
+#endif
 
 /*
  * Xen/kernel shared data -- pointer provided in start_info.
- * NB. We expect that this struct is smaller than a page.
+ *
+ * This structure is defined to be both smaller than a page, and the
+ * only data on the shared page, but may vary in actual size even within
+ * compatible Xen versions; guests should not rely on the size
+ * of this structure remaining constant.
  */
 struct shared_info {
-	struct vcpu_info vcpu_info[MAX_VIRT_CPUS];
+    struct vcpu_info vcpu_info[MAX_VIRT_CPUS];
 
-	/*
-	 * A domain can create "event channels" on which it can send and receive
-	 * asynchronous event notifications. There are three classes of event that
-	 * are delivered by this mechanism:
-	 *  1. Bi-directional inter- and intra-domain connections. Domains must
-	 *     arrange out-of-band to set up a connection (usually by allocating
-	 *     an unbound 'listener' port and avertising that via a storage service
-	 *     such as xenstore).
-	 *  2. Physical interrupts. A domain with suitable hardware-access
-	 *     privileges can bind an event-channel port to a physical interrupt
-	 *     source.
-	 *  3. Virtual interrupts ('events'). A domain can bind an event-channel
-	 *     port to a virtual interrupt source, such as the virtual-timer
-	 *     device or the emergency console.
-	 *
-	 * Event channels are addressed by a "port index". Each channel is
-	 * associated with two bits of information:
-	 *  1. PENDING -- notifies the domain that there is a pending notification
-	 *     to be processed. This bit is cleared by the guest.
-	 *  2. MASK -- if this bit is clear then a 0->1 transition of PENDING
-	 *     will cause an asynchronous upcall to be scheduled. This bit is only
-	 *     updated by the guest. It is read-only within Xen. If a channel
-	 *     becomes pending while the channel is masked then the 'edge' is lost
-	 *     (i.e., when the channel is unmasked, the guest must manually handle
-	 *     pending notifications as no upcall will be scheduled by Xen).
-	 *
-	 * To expedite scanning of pending notifications, any 0->1 pending
-	 * transition on an unmasked channel causes a corresponding bit in a
-	 * per-vcpu selector word to be set. Each bit in the selector covers a
-	 * 'C long' in the PENDING bitfield array.
-	 */
-	unsigned long evtchn_pending[sizeof(unsigned long) * 8];
-	unsigned long evtchn_mask[sizeof(unsigned long) * 8];
-
-	/*
-	 * Wallclock time: updated only by control software. Guests should base
-	 * their gettimeofday() syscall on this wallclock-base value.
-	 */
-	uint32_t wc_version;      /* Version counter: see vcpu_time_info_t. */
-	uint32_t wc_sec;          /* Secs  00:00:00 UTC, Jan 1, 1970.  */
-	uint32_t wc_nsec;         /* Nsecs 00:00:00 UTC, Jan 1, 1970.  */
+    /*
+     * A domain can create "event channels" on which it can send and receive
+     * asynchronous event notifications. There are three classes of event that
+     * are delivered by this mechanism:
+     *  1. Bi-directional inter- and intra-domain connections. Domains must
+     *     arrange out-of-band to set up a connection (usually by allocating
+     *     an unbound 'listener' port and avertising that via a storage service
+     *     such as xenstore).
+     *  2. Physical interrupts. A domain with suitable hardware-access
+     *     privileges can bind an event-channel port to a physical interrupt
+     *     source.
+     *  3. Virtual interrupts ('events'). A domain can bind an event-channel
+     *     port to a virtual interrupt source, such as the virtual-timer
+     *     device or the emergency console.
+     * 
+     * Event channels are addressed by a "port index". Each channel is
+     * associated with two bits of information:
+     *  1. PENDING -- notifies the domain that there is a pending notification
+     *     to be processed. This bit is cleared by the guest.
+     *  2. MASK -- if this bit is clear then a 0->1 transition of PENDING
+     *     will cause an asynchronous upcall to be scheduled. This bit is only
+     *     updated by the guest. It is read-only within Xen. If a channel
+     *     becomes pending while the channel is masked then the 'edge' is lost
+     *     (i.e., when the channel is unmasked, the guest must manually handle
+     *     pending notifications as no upcall will be scheduled by Xen).
+     * 
+     * To expedite scanning of pending notifications, any 0->1 pending
+     * transition on an unmasked channel causes a corresponding bit in a
+     * per-vcpu selector word to be set. Each bit in the selector covers a
+     * 'C long' in the PENDING bitfield array.
+     */
+    unsigned long evtchn_pending[sizeof(unsigned long) * 8];
+    unsigned long evtchn_mask[sizeof(unsigned long) * 8];
+
+    /*
+     * Wallclock time: updated only by control software. Guests should base
+     * their gettimeofday() syscall on this wallclock-base value.
+     */
+    uint32_t wc_version;      /* Version counter: see vcpu_time_info_t. */
+    uint32_t wc_sec;          /* Secs  00:00:00 UTC, Jan 1, 1970.  */
+    uint32_t wc_nsec;         /* Nsecs 00:00:00 UTC, Jan 1, 1970.  */
 
-	struct arch_shared_info arch;
+    struct arch_shared_info arch;
 
 };
+#ifndef __XEN__
+typedef struct shared_info shared_info_t;
+#endif
 
 /*
- * Start-of-day memory layout for the initial domain (DOM0):
+ * Start-of-day memory layout:
  *  1. The domain is started within contiguous virtual-memory region.
- *  2. The contiguous region begins and ends on an aligned 4MB boundary.
- *  3. The region start corresponds to the load address of the OS image.
- *     If the load address is not 4MB aligned then the address is rounded down.
- *  4. This the order of bootstrap elements in the initial virtual region:
+ *  2. The contiguous region ends on an aligned 4MB boundary.
+ *  3. This the order of bootstrap elements in the initial virtual region:
  *      a. relocated kernel image
  *      b. initial ram disk              [mod_start, mod_len]
  *      c. list of allocated page frames [mfn_list, nr_pages]
  *      d. start_info_t structure        [register ESI (x86)]
  *      e. bootstrap page tables         [pt_base, CR3 (x86)]
  *      f. bootstrap stack               [register ESP (x86)]
- *  5. Bootstrap elements are packed together, but each is 4kB-aligned.
- *  6. The initial ram disk may be omitted.
- *  7. The list of page frames forms a contiguous 'pseudo-physical' memory
+ *  4. Bootstrap elements are packed together, but each is 4kB-aligned.
+ *  5. The initial ram disk may be omitted.
+ *  6. The list of page frames forms a contiguous 'pseudo-physical' memory
  *     layout for the domain. In particular, the bootstrap virtual-memory
  *     region is a 1:1 mapping to the first section of the pseudo-physical map.
- *  8. All bootstrap elements are mapped read-writable for the guest OS. The
+ *  7. All bootstrap elements are mapped read-writable for the guest OS. The
  *     only exception is the bootstrap page table, which is mapped read-only.
- *  9. There is guaranteed to be at least 512kB padding after the final
+ *  8. There is guaranteed to be at least 512kB padding after the final
  *     bootstrap element. If necessary, the bootstrap virtual region is
  *     extended by an extra 4MB to ensure this.
  */
 
 #define MAX_GUEST_CMDLINE 1024
 struct start_info {
-	/* THE FOLLOWING ARE FILLED IN BOTH ON INITIAL BOOT AND ON RESUME.    */
-	char magic[32];             /* "xen-<version>-<platform>".            */
-	unsigned long nr_pages;     /* Total pages allocated to this domain.  */
-	unsigned long shared_info;  /* MACHINE address of shared info struct. */
-	uint32_t flags;             /* SIF_xxx flags.                         */
-	unsigned long store_mfn;    /* MACHINE page number of shared page.    */
-	uint32_t store_evtchn;      /* Event channel for store communication. */
-	union {
-		struct {
-			unsigned long mfn;  /* MACHINE page number of console page.   */
-			uint32_t  evtchn;   /* Event channel for console page.        */
-		} domU;
-		struct {
-			uint32_t info_off;  /* Offset of console_info struct.         */
-			uint32_t info_size; /* Size of console_info struct from start.*/
-		} dom0;
-	} console;
-	/* THE FOLLOWING ARE ONLY FILLED IN ON INITIAL BOOT (NOT RESUME).     */
-	unsigned long pt_base;      /* VIRTUAL address of page directory.     */
-	unsigned long nr_pt_frames; /* Number of bootstrap p.t. frames.       */
-	unsigned long mfn_list;     /* VIRTUAL address of page-frame list.    */
-	unsigned long mod_start;    /* VIRTUAL address of pre-loaded module.  */
-	unsigned long mod_len;      /* Size (bytes) of pre-loaded module.     */
-	int8_t cmd_line[MAX_GUEST_CMDLINE];
+    /* THE FOLLOWING ARE FILLED IN BOTH ON INITIAL BOOT AND ON RESUME.    */
+    char magic[32];             /* "xen-<version>-<platform>".            */
+    unsigned long nr_pages;     /* Total pages allocated to this domain.  */
+    unsigned long shared_info;  /* MACHINE address of shared info struct. */
+    uint32_t flags;             /* SIF_xxx flags.                         */
+    xen_pfn_t store_mfn;        /* MACHINE page number of shared page.    */
+    uint32_t store_evtchn;      /* Event channel for store communication. */
+    union {
+        struct {
+            xen_pfn_t mfn;      /* MACHINE page number of console page.   */
+            uint32_t  evtchn;   /* Event channel for console page.        */
+        } domU;
+        struct {
+            uint32_t info_off;  /* Offset of console_info struct.         */
+            uint32_t info_size; /* Size of console_info struct from start.*/
+        } dom0;
+    } console;
+    /* THE FOLLOWING ARE ONLY FILLED IN ON INITIAL BOOT (NOT RESUME).     */
+    unsigned long pt_base;      /* VIRTUAL address of page directory.     */
+    unsigned long nr_pt_frames; /* Number of bootstrap p.t. frames.       */
+    unsigned long mfn_list;     /* VIRTUAL address of page-frame list.    */
+    unsigned long mod_start;    /* VIRTUAL address of pre-loaded module.  */
+    unsigned long mod_len;      /* Size (bytes) of pre-loaded module.     */
+    int8_t cmd_line[MAX_GUEST_CMDLINE];
 };
+typedef struct start_info start_info_t;
+
+/* New console union for dom0 introduced in 0x00030203. */
+#if __XEN_INTERFACE_VERSION__ < 0x00030203
+#define console_mfn    console.domU.mfn
+#define console_evtchn console.domU.evtchn
+#endif
 
 /* These flags are passed in the 'flags' field of start_info_t. */
 #define SIF_PRIVILEGED    (1<<0)  /* Is the domain privileged? */
 #define SIF_INITDOMAIN    (1<<1)  /* Is this the initial control domain? */
 
-typedef uint64_t cpumap_t;
+typedef struct dom0_vga_console_info {
+    uint8_t video_type; /* DOM0_VGA_CONSOLE_??? */
+#define XEN_VGATYPE_TEXT_MODE_3 0x03
+#define XEN_VGATYPE_VESA_LFB    0x23
+
+    union {
+        struct {
+            /* Font height, in pixels. */
+            uint16_t font_height;
+            /* Cursor location (column, row). */
+            uint16_t cursor_x, cursor_y;
+            /* Number of rows and columns (dimensions in characters). */
+            uint16_t rows, columns;
+        } text_mode_3;
+
+        struct {
+            /* Width and height, in pixels. */
+            uint16_t width, height;
+            /* Bytes per scan line. */
+            uint16_t bytes_per_line;
+            /* Bits per pixel. */
+            uint16_t bits_per_pixel;
+            /* LFB physical address, and size (in units of 64kB). */
+            uint32_t lfb_base;
+            uint32_t lfb_size;
+            /* RGB mask offsets and sizes, as defined by VBE 1.2+ */
+            uint8_t  red_pos, red_size;
+            uint8_t  green_pos, green_size;
+            uint8_t  blue_pos, blue_size;
+            uint8_t  rsvd_pos, rsvd_size;
+#if __XEN_INTERFACE_VERSION__ >= 0x00030206
+            /* VESA capabilities (offset 0xa, VESA command 0x4f00). */
+            uint32_t gbl_caps;
+            /* Mode attributes (offset 0x0, VESA command 0x4f01). */
+            uint16_t mode_attrs;
+#endif
+        } vesa_lfb;
+    } u;
+} dom0_vga_console_info_t;
+#define xen_vga_console_info dom0_vga_console_info
+#define xen_vga_console_info_t dom0_vga_console_info_t
 
 typedef uint8_t xen_domain_handle_t[16];
 
@@ -437,6 +605,11 @@ typedef uint8_t xen_domain_handle_t[16];
 #define __mk_unsigned_long(x) x ## UL
 #define mk_unsigned_long(x) __mk_unsigned_long(x)
 
+__DEFINE_XEN_GUEST_HANDLE(uint8,  uint8_t);
+__DEFINE_XEN_GUEST_HANDLE(uint16, uint16_t);
+__DEFINE_XEN_GUEST_HANDLE(uint32, uint32_t);
+__DEFINE_XEN_GUEST_HANDLE(uint64, uint64_t);
+
 #else /* __ASSEMBLY__ */
 
 /* In assembly code we cannot use C numeric constant suffixes. */
@@ -444,4 +617,24 @@ typedef uint8_t xen_domain_handle_t[16];
 
 #endif /* !__ASSEMBLY__ */
 
+/* Default definitions for macros used by domctl/sysctl. */
+#if defined(__XEN__) || defined(__XEN_TOOLS__)
+#ifndef uint64_aligned_t
+#define uint64_aligned_t uint64_t
+#endif
+#ifndef XEN_GUEST_HANDLE_64
+#define XEN_GUEST_HANDLE_64(name) XEN_GUEST_HANDLE(name)
+#endif
+#endif
+
 #endif /* __XEN_PUBLIC_XEN_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
Index: head-2008-04-15/include/xen/xenbus.h
===================================================================
--- head-2008-04-15.orig/include/xen/xenbus.h	2008-04-15 09:41:09.000000000 +0200
+++ head-2008-04-15/include/xen/xenbus.h	2008-04-15 09:59:33.000000000 +0200
@@ -5,23 +5,23 @@
  *
  * Copyright (C) 2005 Rusty Russell, IBM Corporation
  * Copyright (C) 2005 XenSource Ltd.
- *
+ * 
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License version 2
  * as published by the Free Software Foundation; or, when distributed
  * separately from the Linux kernel or incorporated into other
  * software packages, subject to the following license:
- *
+ * 
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this source file (the "Software"), to deal in the Software without
  * restriction, including without limitation the rights to use, copy, modify,
  * merge, publish, distribute, sublicense, and/or sell copies of the Software,
  * and to permit persons to whom the Software is furnished to do so, subject to
  * the following conditions:
- *
+ * 
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
- *
+ * 
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
@@ -39,6 +39,7 @@
 #include <linux/mutex.h>
 #include <linux/completion.h>
 #include <linux/init.h>
+#include <linux/err.h>
 #include <xen/interface/xen.h>
 #include <xen/interface/grant_table.h>
 #include <xen/interface/io/xenbus.h>
@@ -55,8 +56,17 @@ struct xenbus_watch
 	/* Callback (executed in a process context with no locks held). */
 	void (*callback)(struct xenbus_watch *,
 			 const char **vec, unsigned int len);
+
+	/* See XBWF_ definitions below. */
+	unsigned long flags;
 };
 
+/*
+ * Execute callback in its own kthread. Useful if the callback is long
+ * running or heavily serialised, to avoid taking out the main xenwatch thread
+ * for a long period of time (or even unwittingly causing a deadlock).
+ */
+#define XBWF_new_thread	1
 
 /* A xenbus device. */
 struct xenbus_device {
@@ -97,6 +107,7 @@ struct xenbus_driver {
 	int (*uevent)(struct xenbus_device *, char **, int, char *, int);
 	struct device_driver driver;
 	int (*read_otherend_details)(struct xenbus_device *dev);
+	int (*is_ready)(struct xenbus_device *dev);
 };
 
 static inline struct xenbus_driver *to_xenbus_driver(struct device_driver *drv)
@@ -104,27 +115,8 @@ static inline struct xenbus_driver *to_x
 	return container_of(drv, struct xenbus_driver, driver);
 }
 
-int __must_check __xenbus_register_frontend(struct xenbus_driver *drv,
-					    struct module *owner,
-					    const char *mod_name);
-
-static inline int __must_check
-xenbus_register_frontend(struct xenbus_driver *drv)
-{
-	WARN_ON(drv->owner != THIS_MODULE);
-	return __xenbus_register_frontend(drv, THIS_MODULE, KBUILD_MODNAME);
-}
-
-int __must_check __xenbus_register_backend(struct xenbus_driver *drv,
-					   struct module *owner,
-					   const char *mod_name);
-static inline int __must_check
-xenbus_register_backend(struct xenbus_driver *drv)
-{
-	WARN_ON(drv->owner != THIS_MODULE);
-	return __xenbus_register_backend(drv, THIS_MODULE, KBUILD_MODNAME);
-}
-
+int xenbus_register_frontend(struct xenbus_driver *drv);
+int xenbus_register_backend(struct xenbus_driver *drv);
 void xenbus_unregister_driver(struct xenbus_driver *drv);
 
 struct xenbus_transaction
@@ -135,8 +127,6 @@ struct xenbus_transaction
 /* Nil transaction ID. */
 #define XBT_NIL ((struct xenbus_transaction) { 0 })
 
-int __init xenbus_dev_init(void);
-
 char **xenbus_directory(struct xenbus_transaction t,
 			const char *dir, const char *node, unsigned int *num);
 void *xenbus_read(struct xenbus_transaction t,
@@ -166,7 +156,6 @@ int xenbus_printf(struct xenbus_transact
 int xenbus_gather(struct xenbus_transaction t, const char *dir, ...);
 
 /* notifer routines for when the xenstore comes up */
-extern int xenstored_ready;
 int register_xenstore_notifier(struct notifier_block *nb);
 void unregister_xenstore_notifier(struct notifier_block *nb);
 
@@ -179,12 +168,9 @@ void xs_suspend_cancel(void);
 /* Used by xenbus_dev to borrow kernel's store connection. */
 void *xenbus_dev_request_and_reply(struct xsd_sockmsg *msg);
 
-struct work_struct;
-
 /* Prepare for domain suspend: then resume or cancel the suspend. */
 void xenbus_suspend(void);
 void xenbus_resume(void);
-void xenbus_probe(struct work_struct *);
 void xenbus_suspend_cancel(void);
 
 #define XENBUS_IS_ERR_READ(str) ({			\
@@ -197,38 +183,125 @@ void xenbus_suspend_cancel(void);
 
 #define XENBUS_EXIST_ERR(err) ((err) == -ENOENT || (err) == -ERANGE)
 
+
+/**
+ * Register a watch on the given path, using the given xenbus_watch structure
+ * for storage, and the given callback function as the callback.  Return 0 on
+ * success, or -errno on error.  On success, the given path will be saved as
+ * watch->node, and remains the caller's to free.  On error, watch->node will
+ * be NULL, the device will switch to XenbusStateClosing, and the error will
+ * be saved in the store.
+ */
 int xenbus_watch_path(struct xenbus_device *dev, const char *path,
 		      struct xenbus_watch *watch,
 		      void (*callback)(struct xenbus_watch *,
 				       const char **, unsigned int));
-int xenbus_watch_pathfmt(struct xenbus_device *dev, struct xenbus_watch *watch,
-			 void (*callback)(struct xenbus_watch *,
-					  const char **, unsigned int),
-			 const char *pathfmt, ...)
-	__attribute__ ((format (printf, 4, 5)));
 
+
+/**
+ * Register a watch on the given path/path2, using the given xenbus_watch
+ * structure for storage, and the given callback function as the callback.
+ * Return 0 on success, or -errno on error.  On success, the watched path
+ * (path/path2) will be saved as watch->node, and becomes the caller's to
+ * kfree().  On error, watch->node will be NULL, so the caller has nothing to
+ * free, the device will switch to XenbusStateClosing, and the error will be
+ * saved in the store.
+ */
+int xenbus_watch_path2(struct xenbus_device *dev, const char *path,
+		       const char *path2, struct xenbus_watch *watch,
+		       void (*callback)(struct xenbus_watch *,
+					const char **, unsigned int));
+
+
+/**
+ * Advertise in the store a change of the given driver to the given new_state.
+ * Return 0 on success, or -errno on error.  On error, the device will switch
+ * to XenbusStateClosing, and the error will be saved in the store.
+ */
 int xenbus_switch_state(struct xenbus_device *dev, enum xenbus_state new_state);
+
+
+/**
+ * Grant access to the given ring_mfn to the peer of the given device.  Return
+ * 0 on success, or -errno on error.  On error, the device will switch to
+ * XenbusStateClosing, and the error will be saved in the store.
+ */
 int xenbus_grant_ring(struct xenbus_device *dev, unsigned long ring_mfn);
-int xenbus_map_ring_valloc(struct xenbus_device *dev,
-			   int gnt_ref, void **vaddr);
+
+
+/**
+ * Map a page of memory into this domain from another domain's grant table.
+ * xenbus_map_ring_valloc allocates a page of virtual address space, maps the
+ * page to that address, and sets *vaddr to that address.
+ * xenbus_map_ring does not allocate the virtual address space (you must do
+ * this yourself!). It only maps in the page to the specified address.
+ * Returns 0 on success, and GNTST_* (see xen/include/interface/grant_table.h)
+ * or -ENOMEM on error. If an error is returned, device will switch to
+ * XenbusStateClosing and the error message will be saved in XenStore.
+ */
+struct vm_struct *xenbus_map_ring_valloc(struct xenbus_device *dev,
+					 int gnt_ref);
 int xenbus_map_ring(struct xenbus_device *dev, int gnt_ref,
 			   grant_handle_t *handle, void *vaddr);
 
-int xenbus_unmap_ring_vfree(struct xenbus_device *dev, void *vaddr);
+
+/**
+ * Unmap a page of memory in this domain that was imported from another domain.
+ * Use xenbus_unmap_ring_vfree if you mapped in your memory with
+ * xenbus_map_ring_valloc (it will free the virtual address space).
+ * Returns 0 on success and returns GNTST_* on error
+ * (see xen/include/interface/grant_table.h).
+ */
+int xenbus_unmap_ring_vfree(struct xenbus_device *dev, struct vm_struct *);
 int xenbus_unmap_ring(struct xenbus_device *dev,
 		      grant_handle_t handle, void *vaddr);
 
+
+/**
+ * Allocate an event channel for the given xenbus_device, assigning the newly
+ * created local port to *port.  Return 0 on success, or -errno on error.  On
+ * error, the device will switch to XenbusStateClosing, and the error will be
+ * saved in the store.
+ */
 int xenbus_alloc_evtchn(struct xenbus_device *dev, int *port);
-int xenbus_bind_evtchn(struct xenbus_device *dev, int remote_port, int *port);
+
+
+/**
+ * Free an existing event channel. Returns 0 on success or -errno on error.
+ */
 int xenbus_free_evtchn(struct xenbus_device *dev, int port);
 
+
+/**
+ * Return the state of the driver rooted at the given store path, or
+ * XenbusStateUnknown if no state can be read.
+ */
 enum xenbus_state xenbus_read_driver_state(const char *path);
 
-void xenbus_dev_error(struct xenbus_device *dev, int err, const char *fmt, ...);
-void xenbus_dev_fatal(struct xenbus_device *dev, int err, const char *fmt, ...);
+
+/***
+ * Report the given negative errno into the store, along with the given
+ * formatted message.
+ */
+void xenbus_dev_error(struct xenbus_device *dev, int err, const char *fmt,
+		      ...);
+
+
+/***
+ * Equivalent to xenbus_dev_error(dev, err, fmt, args), followed by
+ * xenbus_switch_state(dev, NULL, XenbusStateClosing) to schedule an orderly
+ * closedown of this driver and its peer.
+ */
+void xenbus_dev_fatal(struct xenbus_device *dev, int err, const char *fmt,
+		      ...);
+
+int xenbus_dev_init(void);
 
 const char *xenbus_strstate(enum xenbus_state state);
 int xenbus_dev_is_online(struct xenbus_device *dev);
 int xenbus_frontend_closed(struct xenbus_device *dev);
 
+int xenbus_for_each_backend(void *arg, int (*fn)(struct device *, void *));
+int xenbus_for_each_frontend(void *arg, int (*fn)(struct device *, void *));
+
 #endif /* _XEN_XENBUS_H */