1 files changed, 11 insertions, 37 deletions

diff --git a/drivers/xen/xenbus/xenbus_client.c b/drivers/xen/xenbus/xenbus_client.c
index 566d2adbd6e..439c9dca9ee 100644
--- a/drivers/xen/xenbus/xenbus_client.c
+++ b/drivers/xen/xenbus/xenbus_client.c
@@ -30,6 +30,7 @@
  * IN THE SOFTWARE.
  */
 
+#include <linux/mm.h>
 #include <linux/slab.h>
 #include <linux/types.h>
 #include <linux/spinlock.h>
@@ -44,6 +45,7 @@
 #include <xen/grant_table.h>
 #include <xen/xenbus.h>
 #include <xen/xen.h>
+#include <xen/features.h>
 
 #include "xenbus_probe.h"
 
@@ -399,33 +401,6 @@ 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)
@@ -490,8 +465,7 @@ static int xenbus_map_ring_valloc_pv(struct xenbus_device *dev,
 
 	op.host_addr = arbitrary_virt_to_machine(pte).maddr;
 
-	if (HYPERVISOR_grant_table_op(GNTTABOP_map_grant_ref, &op, 1))
-		BUG();
+	gnttab_batch_map(&op, 1);
 
 	if (op.status != GNTST_okay) {
 		free_vm_area(area);
@@ -534,7 +508,7 @@ static int xenbus_map_ring_valloc_hvm(struct xenbus_device *dev,
 
 	err = xenbus_map_ring(dev, gnt_ref, &node->handle, addr);
 	if (err)
-		goto out_err;
+		goto out_err_free_ballooned_pages;
 
 	spin_lock(&xenbus_valloc_lock);
 	list_add(&node->next, &xenbus_valloc_pages);
@@ -543,8 +517,9 @@ static int xenbus_map_ring_valloc_hvm(struct xenbus_device *dev,
 	*vaddr = addr;
 	return 0;
 
- out_err:
+ out_err_free_ballooned_pages:
 	free_xenballooned_pages(1, &node->page);
+ out_err:
 	kfree(node);
 	return err;
 }
@@ -569,11 +544,10 @@ int xenbus_map_ring(struct xenbus_device *dev, int gnt_ref,
 {
 	struct gnttab_map_grant_ref op;
 
-	gnttab_set_map_op(&op, (phys_addr_t)vaddr, GNTMAP_host_map, gnt_ref,
+	gnttab_set_map_op(&op, (unsigned long)vaddr, GNTMAP_host_map, gnt_ref,
 			  dev->otherend_id);
 
-	if (HYPERVISOR_grant_table_op(GNTTABOP_map_grant_ref, &op, 1))
-		BUG();
+	gnttab_batch_map(&op, 1);
 
 	if (op.status != GNTST_okay) {
 		xenbus_dev_fatal(dev, op.status,
@@ -662,7 +636,7 @@ static int xenbus_unmap_ring_vfree_hvm(struct xenbus_device *dev, void *vaddr)
 			goto found;
 		}
 	}
-	node = NULL;
+	node = addr = NULL;
  found:
 	spin_unlock(&xenbus_valloc_lock);
 
@@ -698,7 +672,7 @@ int xenbus_unmap_ring(struct xenbus_device *dev,
 {
 	struct gnttab_unmap_grant_ref op;
 
-	gnttab_set_unmap_op(&op, (phys_addr_t)vaddr, GNTMAP_host_map, handle);
+	gnttab_set_unmap_op(&op, (unsigned long)vaddr, GNTMAP_host_map, handle);
 
 	if (HYPERVISOR_grant_table_op(GNTTABOP_unmap_grant_ref, &op, 1))
 		BUG();
@@ -743,7 +717,7 @@ static const struct xenbus_ring_ops ring_ops_hvm = {
 
 void __init xenbus_ring_ops_init(void)
 {
-	if (xen_pv_domain())
+	if (!xen_feature(XENFEAT_auto_translated_physmap))
 		ring_ops = &ring_ops_pv;
 	else
 		ring_ops = &ring_ops_hvm;