[Xen-changelog] [xen-unstable] arm: mark heap and frametable limits as read mostly

[Xen patchbot-unstable <patchbot@xxxxxxx>]

# HG changeset patch
# User Ian Campbell <ian.campbell@xxxxxxxxxx>
# Date 1349967420 -3600
# Node ID e0e1350dfe9b7a6cacb1378f75d8e6536d22eb2d
# Parent  632c1db3658a8a869b82a91b53a89c54506ddac8
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@xxxxxxxxxx>
Acked-by: Tim Deegan <tim@xxxxxxx>
Committed-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
---


diff -r 632c1db3658a -r e0e1350dfe9b xen/arch/arm/mm.c
--- a/xen/arch/arm/mm.c Thu Oct 11 15:56:59 2012 +0100
+++ b/xen/arch/arm/mm.c Thu Oct 11 15:57:00 2012 +0100
@@ -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;
 

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