svn commit: r314138 - head/sys/dev/xen/gntdev

[Roger Pau Monné]

Author: royger
Date: Thu Feb 23 13:14:28 2017
New Revision: 314138
URL: https://svnweb.freebsd.org/changeset/base/314138

Log:
  xen/gndev: use UOFF_TO_IDX instead of OFF_TO_IDX
  
  The Xen grant table device treats the mmap offset parameter as an unsigned
  type, and as so it must use the newly introduced UOFF_TO_IDX.
  
  Sponsored by:   Citrix Systems R&D
  MFC after:      2 weeks
  X-MFC-with:     r313690

Modified:
  head/sys/dev/xen/gntdev/gntdev.c

Modified: head/sys/dev/xen/gntdev/gntdev.c
==============================================================================
--- head/sys/dev/xen/gntdev/gntdev.c	Thu Feb 23 09:55:55 2017	(r314137)
+++ head/sys/dev/xen/gntdev/gntdev.c	Thu Feb 23 13:14:28 2017	(r314138)
@@ -796,8 +796,8 @@ gntdev_gmap_pg_fault(vm_object_t object,
 
 	relative_offset = offset - gmap->file_index;
 
-	pidx = OFF_TO_IDX(offset);
-	ridx = OFF_TO_IDX(relative_offset);
+	pidx = UOFF_TO_IDX(offset);
+	ridx = UOFF_TO_IDX(relative_offset);
 	if (ridx >= gmap->count ||
 	    gmap->grant_map_ops[ridx].status != GNTST_okay)
 		return (VM_PAGER_FAIL);
@@ -1067,7 +1067,7 @@ mmap_gref(struct per_user_data *priv_use
 			break;
 
 		vm_page_insert(gref->page, mem_obj,
-		    OFF_TO_IDX(gref->file_index));
+		    UOFF_TO_IDX(gref->file_index));
 
 		count--;
 	}
@@ -1207,7 +1207,7 @@ gntdev_mmap_single(struct cdev *cdev, vm
 	if (error != 0)
 		return (EINVAL);
 
-	count = OFF_TO_IDX(size);
+	count = UOFF_TO_IDX(size);
 
 	gref_start = gntdev_find_grefs(priv_user, *offset, count);
 	if (gref_start) {