From: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Date: Fri, 10 Jul 2009 16:57:41 +0000 (-0700)
Subject: x86, pat: Sanity check remap_pfn_range for RAM region
X-Git-Tag: v2.6.32-rc1~680^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d886c73cd4cf02a71e1650cbcb6176799d78aac1;p=pandora-kernel.git

x86, pat: Sanity check remap_pfn_range for RAM region

Add sanity check for remap_pfn_range of RAM regions using
lookup_memtype(). Previously, we did not have anyway to get the type of
RAM memory regions as they were tracked using a single bit in
page_struct (WB, nonWB). Now we can get the actual type from page struct
(WB, WC, UC_MINUS) and make sure the requester gets that type.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
---

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