From: Jan Beulich <jbeulich@suse.com>
Date: Mon, 14 Sep 2015 11:40:04 +0000 (+0200)
Subject: x86/PoD: use clear_domain_page()
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~2540
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=486252f8a86bca36c7c737a25d95327def7a1af3;p=xen.git

x86/PoD: use clear_domain_page()

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: George Dunlap <george.dunlap@citrix.com>
---

diff --git a/xen/arch/x86/mm/p2m-pod.c b/xen/arch/x86/mm/p2m-pod.c
index 8156525b29..026d45577d 100644
--- a/xen/arch/x86/mm/p2m-pod.c
+++ b/xen/arch/x86/mm/p2m-pod.c
@@ -107,11 +107,7 @@ p2m_pod_cache_add(struct p2m_domain *p2m,
      * promise to provide zero pages. So we scrub pages before using.
      */
     for ( i = 0; i < (1 << order); i++ )
-    {
-        char *b = map_domain_page(_mfn(mfn_x(page_to_mfn(page)) + i));
-        clear_page(b);
-        unmap_domain_page(b);
-    }
+        clear_domain_page(_mfn(mfn_x(page_to_mfn(page)) + i));
 
     /* First, take all pages off the domain list */
     lock_page_alloc(p2m);