linux-kernel - [PATCH 2/4] x86, numa: Do not adjust start/end for early_node

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Date:	Fri, 18 Feb 2011 10:59:16 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
	"H. Peter Anvin" <hpa@...or.com>, Tejun Heo <tj@...nel.org>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	David Rientjes <rientjes@...gle.com>,
	Cyrill Gorcunov <gorcunov@...il.com>
Subject: [PATCH 2/4] x86, numa: Do not adjust start/end for early_node_mem()


We have top-down allocation already. So do not bothter to adjust
start/end to make sure get high addr on local hode.

Signed-off-by: Yinghai Lu <yinghai@...nel.org>

---
 arch/x86/mm/numa_64.c |    9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

Index: linux-2.6/arch/x86/mm/numa_64.c
===================================================================
--- linux-2.6.orig/arch/x86/mm/numa_64.c
+++ linux-2.6/arch/x86/mm/numa_64.c
@@ -164,14 +164,9 @@ static void * __init early_node_mem(int
 	unsigned long mem;
 
 	/*
-	 * put it on high as possible
-	 * something will go with NODE_DATA
+	 * memblock find will follow top-down, so don't need to adjust
+	 *   start anymore
 	 */
-	if (start < (MAX_DMA_PFN<<PAGE_SHIFT))
-		start = MAX_DMA_PFN<<PAGE_SHIFT;
-	if (start < (MAX_DMA32_PFN<<PAGE_SHIFT) &&
-	    end > (MAX_DMA32_PFN<<PAGE_SHIFT))
-		start = MAX_DMA32_PFN<<PAGE_SHIFT;
 	mem = memblock_x86_find_in_range_node(nodeid, start, end, size, align);
 	if (mem != MEMBLOCK_ERROR)
 		return __va(mem);
--
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