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Message-Id: <1236257708-27269-9-git-send-email-penberg@cs.helsinki.fi>
Date:	Thu,  5 Mar 2009 14:55:00 +0200
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	mingo@...e.hu
Cc:	x86@...nel.org, linux-kernel@...r.kernel.org,
	Yinghai Lu <yinghai@...nel.org>
Subject: [PATCH 09/17] x86: add table start and end sanity checks to 32-bit init_memory_mapping()

Impact: cleanup

This patch adds a sanity check to the 32-bit version of init_memory_mapping()
to reduce the diff to the 64-bit version.

Cc: Yinghai Lu <yinghai@...nel.org>
Signed-off-by: Pekka Enberg <penberg@...helsinki.fi>
---
 arch/x86/mm/init_32.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 00c1d85..0a3707f 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -1060,7 +1060,7 @@ unsigned long __init_refok init_memory_mapping(unsigned long start,
 
 	__flush_tlb_all();
 
-	if (!after_bootmem)
+	if (!after_bootmem && table_end > table_start)
 		reserve_early(table_start << PAGE_SHIFT,
 				 table_end << PAGE_SHIFT, "PGTABLE");
 
-- 
1.5.4.3

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