From b01efdda04880c0bc7b87bbaa591854601bc9ed0 Mon Sep 17 00:00:00 2001
From: Wei Liu <wei.liu2@citrix.com>
Date: Thu, 31 Jan 2019 18:49:36 +0000
Subject: [PATCH] x86_64/mm.c: remove code that serves no purpose in
 setup_m2p_table

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
---
 xen/arch/x86/x86_64/mm.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/xen/arch/x86/x86_64/mm.c b/xen/arch/x86/x86_64/mm.c
index 094c609c8c..55fa338d71 100644
--- a/xen/arch/x86/x86_64/mm.c
+++ b/xen/arch/x86/x86_64/mm.c
@@ -480,8 +480,6 @@ static int setup_m2p_table(struct mem_hotadd_info *info)
             l2e_write(l2_ro_mpt, l2e_from_mfn(mfn,
                    /*_PAGE_GLOBAL|*/_PAGE_PSE|_PAGE_USER|_PAGE_PRESENT));
         }
-        if ( !((unsigned long)l2_ro_mpt & ~PAGE_MASK) )
-            l2_ro_mpt = NULL;
         i += ( 1UL << (L2_PAGETABLE_SHIFT - 3));
     }
 #undef CNT
-- 
2.39.5