4 files changed, 39 insertions, 12 deletions

diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index e51f3c50bd4..35e02a10110 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -929,8 +929,7 @@ int bind_evtchn_to_irqhandler(unsigned int evtchn,
 			      unsigned long irqflags,
 			      const char *devname, void *dev_id)
 {
-	unsigned int irq;
-	int retval;
+	int irq, retval;
 
 	irq = bind_evtchn_to_irq(evtchn);
 	if (irq < 0)
@@ -972,8 +971,7 @@ int bind_virq_to_irqhandler(unsigned int virq, unsigned int cpu,
 			    irq_handler_t handler,
 			    unsigned long irqflags, const char *devname, void *dev_id)
 {
-	unsigned int irq;
-	int retval;
+	int irq, retval;
 
 	irq = bind_virq_to_irq(virq, cpu);
 	if (irq < 0)
diff --git a/drivers/xen/gntalloc.c b/drivers/xen/gntalloc.c
index a7ffdfe19fc..f6832f46aea 100644
--- a/drivers/xen/gntalloc.c
+++ b/drivers/xen/gntalloc.c
@@ -427,6 +427,17 @@ static long gntalloc_ioctl(struct file *filp, unsigned int cmd,
 	return 0;
 }
 
+static void gntalloc_vma_open(struct vm_area_struct *vma)
+{
+	struct gntalloc_gref *gref = vma->vm_private_data;
+	if (!gref)
+		return;
+
+	spin_lock(&gref_lock);
+	gref->users++;
+	spin_unlock(&gref_lock);
+}
+
 static void gntalloc_vma_close(struct vm_area_struct *vma)
 {
 	struct gntalloc_gref *gref = vma->vm_private_data;
@@ -441,6 +452,7 @@ static void gntalloc_vma_close(struct vm_area_struct *vma)
 }
 
 static struct vm_operations_struct gntalloc_vmops = {
+	.open = gntalloc_vma_open,
 	.close = gntalloc_vma_close,
 };
 
@@ -471,8 +483,6 @@ static int gntalloc_mmap(struct file *filp, struct vm_area_struct *vma)
 	vma->vm_private_data = gref;
 
 	vma->vm_flags |= VM_RESERVED;
-	vma->vm_flags |= VM_DONTCOPY;
-	vma->vm_flags |= VM_PFNMAP | VM_PFN_AT_MMAP;
 
 	vma->vm_ops = &gntalloc_vmops;
 
diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c
index b0f9e8fb005..f914b26cf0c 100644
--- a/drivers/xen/gntdev.c
+++ b/drivers/xen/gntdev.c
@@ -330,17 +330,26 @@ static int unmap_grant_pages(struct grant_map *map, int offset, int pages)
 
 /* ------------------------------------------------------------------ */
 
+static void gntdev_vma_open(struct vm_area_struct *vma)
+{
+	struct grant_map *map = vma->vm_private_data;
+
+	pr_debug("gntdev_vma_open %p\n", vma);
+	atomic_inc(&map->users);
+}
+
 static void gntdev_vma_close(struct vm_area_struct *vma)
 {
 	struct grant_map *map = vma->vm_private_data;
 
-	pr_debug("close %p\n", vma);
+	pr_debug("gntdev_vma_close %p\n", vma);
 	map->vma = NULL;
 	vma->vm_private_data = NULL;
 	gntdev_put_map(map);
 }
 
 static struct vm_operations_struct gntdev_vmops = {
+	.open = gntdev_vma_open,
 	.close = gntdev_vma_close,
 };
 
@@ -652,7 +661,10 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma)
 
 	vma->vm_ops = &gntdev_vmops;
 
-	vma->vm_flags |= VM_RESERVED|VM_DONTCOPY|VM_DONTEXPAND|VM_PFNMAP;
+	vma->vm_flags |= VM_RESERVED|VM_DONTEXPAND;
+
+	if (use_ptemod)
+		vma->vm_flags |= VM_DONTCOPY|VM_PFNMAP;
 
 	vma->vm_private_data = map;
 
diff --git a/drivers/xen/manage.c b/drivers/xen/manage.c
index 95143dd6904..a2eee574784 100644
--- a/drivers/xen/manage.c
+++ b/drivers/xen/manage.c
@@ -8,6 +8,7 @@
 #include <linux/sysrq.h>
 #include <linux/stop_machine.h>
 #include <linux/freezer.h>
+#include <linux/syscore_ops.h>
 
 #include <xen/xen.h>
 #include <xen/xenbus.h>
@@ -61,7 +62,7 @@ static void xen_post_suspend(int cancelled)
 	xen_mm_unpin_all();
 }
 
-#ifdef CONFIG_HIBERNATION
+#ifdef CONFIG_HIBERNATE_CALLBACKS
 static int xen_suspend(void *data)
 {
 	struct suspend_info *si = data;
@@ -70,8 +71,13 @@ static int xen_suspend(void *data)
 	BUG_ON(!irqs_disabled());
 
 	err = sysdev_suspend(PMSG_FREEZE);
+	if (!err) {
+		err = syscore_suspend();
+		if (err)
+			sysdev_resume();
+	}
 	if (err) {
-		printk(KERN_ERR "xen_suspend: sysdev_suspend failed: %d\n",
+		printk(KERN_ERR "xen_suspend: system core suspend failed: %d\n",
 			err);
 		return err;
 	}
@@ -95,6 +101,7 @@ static int xen_suspend(void *data)
 		xen_timer_resume();
 	}
 
+	syscore_resume();
 	sysdev_resume();
 
 	return 0;
@@ -173,7 +180,7 @@ out:
 #endif
 	shutting_down = SHUTDOWN_INVALID;
 }
-#endif	/* CONFIG_HIBERNATION */
+#endif	/* CONFIG_HIBERNATE_CALLBACKS */
 
 struct shutdown_handler {
 	const char *command;
@@ -202,7 +209,7 @@ static void shutdown_handler(struct xenbus_watch *watch,
 		{ "poweroff",	do_poweroff },
 		{ "halt",	do_poweroff },
 		{ "reboot",	do_reboot   },
-#ifdef CONFIG_HIBERNATION
+#ifdef CONFIG_HIBERNATE_CALLBACKS
 		{ "suspend",	do_suspend  },
 #endif
 		{NULL, NULL},