linux-kernel - [PATCH] x86: set node_remap

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Message-Id: <200805312253.47939.yhlu.kernel@gmail.com>
Date:	Sat, 31 May 2008 22:53:47 -0700
From:	Yinghai Lu <yhlu.kernel@...il.com>
To:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH] x86: set node_remap_size[0] in fallback path


otherwise alloc_remap will not get node_mem_map from kva area, and
alloc_node_mem_map has to alloc_bootmem_node get mem_map.
it will use two copies low address...

Signed-off-by: Yinghai Lu <yhlu.kernel@...il.com>

--- a/arch/x86/mm/discontig_32.c	2008-05-31 21:46:14.000000000 -0700
+++ b/arch/x86/mm/discontig_32.c	2008-05-31 21:49:02.000000000 -0700
@@ -124,6 +124,7 @@ int __init get_memcfg_numa_flat(void)
 	node_start_pfn[0] = 0;
 	node_end_pfn[0] = max_pfn;
 	memory_present(0, 0, max_pfn);
+	node_remap_size[0] = node_memmap_size_bytes(0, 0, max_pfn);
 
         /* Indicate there is one node available. */
 	nodes_clear(node_online_map);
--
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