From: Huang Ying <ying.huang@intel.com>
Date: Tue, 10 Mar 2009 02:57:04 +0000 (+0800)
Subject: x86, kexec: x86_64: add identity map for pages at image->start
X-Git-Tag: v2.6.30-rc1~215^2~4^2~2^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5359454701ce51a4626b1ef6eb7b16ec35bd458d;p=pandora-kernel.git

x86, kexec: x86_64: add identity map for pages at image->start

Impact: Fix corner case that cannot yet occur

image->start may be outside of 0 ~ max_pfn, for example when jumping
back to original kernel from kexeced kenrel. This patch add identity
map for pages at image->start.

Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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