linux-kernel - [ 20/89] x86, mm: Undo incorrect revert in arch/x86/mm/init.c

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Date:	Mon, 03 Dec 2012 14:32:06 +0000
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Yinghai Lu <yinghai@...nel.org>,
	Jacob Shin <jacob.shin@....com>,
	"H. Peter Anvin" <hpa@...ux.intel.com>
Subject: [ 20/89] x86, mm: Undo incorrect revert in arch/x86/mm/init.c

3.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Yinghai Lu <yinghai@...nel.org>

commit f82f64dd9f485e13f29f369772d4a0e868e5633a upstream.

Commit

    844ab6f9 x86, mm: Find_early_table_space based on ranges that are actually being mapped

added back some lines back wrongly that has been removed in commit

    7b16bbf97 Revert "x86/mm: Fix the size calculation of mapping tables"

remove them again.

Signed-off-by: Yinghai Lu <yinghai@...nel.org>
Link: http://lkml.kernel.org/r/CAE9FiQW_vuaYQbmagVnxT2DGsYc=9tNeAbdBq53sYkitPOwxSQ@mail.gmail.com
Acked-by: Jacob Shin <jacob.shin@....com>
Signed-off-by: H. Peter Anvin <hpa@...ux.intel.com>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 arch/x86/mm/init.c |    4 ----
 1 file changed, 4 deletions(-)

diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index bc287d6..d7aea41 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -65,10 +65,6 @@ static void __init find_early_table_space(struct map_range *mr, int nr_range)
 #ifdef CONFIG_X86_32
 			extra += PMD_SIZE;
 #endif
-			/* The first 2/4M doesn't use large pages. */
-			if (mr[i].start < PMD_SIZE)
-				extra += range;
-
 			ptes += (extra + PAGE_SIZE - 1) >> PAGE_SHIFT;
 		} else {
 			ptes += (range + PAGE_SIZE - 1) >> PAGE_SHIFT;


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