From 5f335544cf5b716b0af51223e33373c4a7d65e8c Mon Sep 17 00:00:00 2001
From: Jan Beulich <jbeulich@suse.com>
Date: Thu, 27 Aug 2015 17:40:38 +0200
Subject: [PATCH] IOMMU: skip domains without page tables when dumping
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Reported-by: Roger Pau Monné <roger.pau@citrix.com>
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Tested-by: Roger Pau Monné <roger.pau@citrix.com>
Release-acked-by: Wei Liu <wei.liu2@citrix.com>
---
 xen/drivers/passthrough/iommu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/drivers/passthrough/iommu.c b/xen/drivers/passthrough/iommu.c
index fc7831e70a..d513773347 100644
--- a/xen/drivers/passthrough/iommu.c
+++ b/xen/drivers/passthrough/iommu.c
@@ -411,7 +411,7 @@ static void iommu_dump_p2m_table(unsigned char key)
     ops = iommu_get_ops();
     for_each_domain(d)
     {
-        if ( is_hardware_domain(d) )
+        if ( is_hardware_domain(d) || need_iommu(d) <= 0 )
             continue;
 
         if ( iommu_use_hap_pt(d) )
-- 
2.30.2