From: Ian Campbell <ian.campbell@citrix.com>
Date: Thu, 11 Oct 2012 14:57:00 +0000 (+0100)
Subject: arm: mark heap and frametable limits as read mostly
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~7752
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=1c4a5b37b55c56e49135e65728137f54288d1fe6;p=xen.git

arm: mark heap and frametable limits as read mostly

These are used in virt_to_page and page_to_virt so I imagine there's
some small benefit to this (but I've not measured)

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Tim Deegan <tim@xen.org>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
---

diff --git a/xen/arch/arm/mm.c b/xen/arch/arm/mm.c
index f566d4c610..b0068d2a66 100644
--- a/xen/arch/arm/mm.c
+++ b/xen/arch/arm/mm.c
@@ -46,11 +46,12 @@ uint64_t boot_httbr;
 static paddr_t phys_offset;
 
 /* Limits of the Xen heap */
-unsigned long xenheap_mfn_start, xenheap_mfn_end;
-unsigned long xenheap_virt_end;
+unsigned long xenheap_mfn_start __read_mostly;
+unsigned long xenheap_mfn_end __read_mostly;
+unsigned long xenheap_virt_end __read_mostly;
 
-unsigned long frametable_base_mfn;
-unsigned long frametable_virt_end;
+unsigned long frametable_base_mfn __read_mostly;
+unsigned long frametable_virt_end __read_mostly;
 
 unsigned long max_page;