From 77c35acb7c81cd94c6b30a3bef488dd2d8145131 Mon Sep 17 00:00:00 2001
From: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Date: Wed, 23 Feb 2011 08:11:35 -0500
Subject: [PATCH] xen-gntdev: Fix incorrect use of zero handle

The handle with numeric value 0 is a valid map handle, so it cannot
be used to indicate that a page has not been mapped. Use -1 instead.

Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---
Reading git-format-patch failed