From c3361f2f6e1d64bc7e7b8148bbd1c66b8007a898 Mon Sep 17 00:00:00 2001
From: Joerg Roedel <jroedel@suse.de>
Date: Fri, 12 Jun 2015 12:39:25 +0200
Subject: [PATCH] iommu/vt-d: Don't copy translation tables if RTT bit needs to
 be changed

We can't change the RTT bit when translation is enabled, so
don't copy translation tables when we would change the bit
with our new root entry.

Tested-by: ZhenHua Li <zhen-hual@hp.com>
Tested-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
Reading git-format-patch failed