linux-kernel - [PATCH 2/6] x86, 64bit, numa: Allocate memnodemap under max_pfn

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Message-ID: <4D1933C8.7060105@kernel.org>
Date:	Mon, 27 Dec 2010 16:48:08 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
	"H. Peter Anvin" <hpa@...or.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH 2/6] x86, 64bit, numa: Allocate memnodemap under max_pfn_mapped


We need to access it right way, so make sure that it is mapped already.

Prepare to put page table on local node, and nodemap is used before that.

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

---
 arch/x86/mm/numa_64.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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
@@ -87,7 +87,7 @@ static int __init allocate_cachealigned_
 
 	addr = 0x8000;
 	nodemap_size = roundup(sizeof(s16) * memnodemapsize, L1_CACHE_BYTES);
-	nodemap_addr = memblock_find_in_range(addr, max_pfn<<PAGE_SHIFT,
+	nodemap_addr = memblock_find_in_range(addr, get_max_mapped(),
 				      nodemap_size, L1_CACHE_BYTES);
 	if (nodemap_addr == MEMBLOCK_ERROR) {
 		printk(KERN_ERR
--
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