bitkeeper revision 1.1458 (428c48ecnHqb4lxc2c4KfJZ0p7500Q)

init_boot_pages() should ignore sub-page regions.
Signed-off-by: Matthew Chapman <matthewc@hp.com>
Signed-off-by: Keir Fraser <keir@xensource.com>

xen/common/page_alloc.c

@@ -156,6 +156,8 @@ void init_boot_pages(unsigned long ps, unsigned long pe)
 
     ps = round_pgup(ps);
     pe = round_pgdown(pe);
+    if ( pe <= ps )
+        return;
 
     map_free(ps >> PAGE_SHIFT, (pe - ps) >> PAGE_SHIFT);