$NetBSD: patch-da,v 1.1 2009/01/24 18:57:59 bouyer Exp $

some device have I/O space but no mem space so checking iomem to grant
privileges is not enough.

--- xen/include/xen/iocap.h.orig	2009-01-24 17:21:41.000000000 +0100
+++ xen/include/xen/iocap.h	2009-01-24 17:22:05.000000000 +0100
@@ -29,7 +29,7 @@
     rangeset_contains_singleton((d)->irq_caps, i)
 
 #define multipage_allocation_permitted(d)               \
-    (!rangeset_is_empty((d)->iomem_caps))
+    (!rangeset_is_empty((d)->iomem_caps) || !rangeset_is_empty((d)->arch.ioport_caps))
 
 /*
  * Until TLB flushing issues are sorted out we consider it unsafe for
@@ -37,6 +37,6 @@
  * operations.
  */
 #define grant_operation_permitted(d)                    \
-    (!rangeset_is_empty((d)->iomem_caps))
+    (!rangeset_is_empty((d)->iomem_caps) || !rangeset_is_empty((d)->arch.ioport_caps))
 
 #endif /* __XEN_IOCAP_H__ */