From 0f16d0dfcdb5aab97d9e368f008b070b5b3ec6d3 Mon Sep 17 00:00:00 2001
From: Daniel Kiper <dkiper@net-space.pl>
Date: Wed, 11 May 2011 22:34:38 +0200
Subject: [PATCH] xen/setup: Fix for incorrect xen_extra_mem_start
 initialization under 32-bit

git commit 24bdb0b62cc82120924762ae6bc85afc8c3f2b26 (xen: do not create
the extra e820 region at an addr lower than 4G) does not take into
account that ifdef CONFIG_X86_32 instead of e820_end_of_low_ram_pfn()
find_low_pfn_range() is called (both calls are from arch/x86/kernel/setup.c).
find_low_pfn_range() behaves correctly and does not require change in
xen_extra_mem_start initialization. Additionally, if xen_extra_mem_start
is initialized in the same way as ifdef CONFIG_X86_64 then memory hotplug
support for Xen balloon driver (under development) is broken.

Signed-off-by: Daniel Kiper <dkiper@net-space.pl>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---
Reading git-format-patch failed