[XEN] Fix my change to XENVER_pagesize hypercall --

arg check wrong way round.
Signed-off-by: Keir Fraser <keir@xensource.com>

diff --git a/xen/common/kernel.c b/xen/common/kernel.c
index db82859d0f7ddc470adf5f17f5462f6cb74619f8..dc76a893a3c1bced3f9464405299b5041584d196 100644 (file)
--- a/xen/common/kernel.c
+++ b/xen/common/kernel.c
@@ -214,7 +214,7 @@ long do_xen_version(int cmd, XEN_GUEST_HANDLE(void) arg)
 
     case XENVER_pagesize:
     {
-        return (guest_handle_is_null(arg) ? -EINVAL : PAGE_SIZE);
+        return (!guest_handle_is_null(arg) ? -EINVAL : PAGE_SIZE);
     }
 
     }