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Date:	Wed, 2 Jul 2008 18:53:44 -0700
From:	Yinghai Lu <>
To:	Ingo Molnar <>, Thomas Gleixner <>,
	"H. Peter Anvin" <>
Cc:	LKML <>
Subject: [PATCH] x86: move init_cpu_to_node after get_smp_config

when acpi=off, cpu_to_apicid is ready after get_smp_config
so need to move init_cpu_to_node after it.

otherwise, we will get wrong cpu->node mapping. and it will rely on
amd_detect_cmp to correct it. but that is too late.
setup_per_cpu_data is already called before that.
we will get per_cpu_data on wrong node.

Signed-off-by: Yinghai Lu <>

 arch/x86/kernel/setup.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

Index: linux-2.6/arch/x86/kernel/setup.c
--- linux-2.6.orig/arch/x86/kernel/setup.c
+++ linux-2.6/arch/x86/kernel/setup.c
@@ -780,10 +780,6 @@ void __init setup_arch(char **cmdline_p)
-#ifdef CONFIG_X86_64
-	init_cpu_to_node();
 #if defined(CONFIG_X86_MPPARSE) || defined(CONFIG_X86_VISWS)
 	 * get boot-time SMP configuration:
@@ -792,6 +788,10 @@ void __init setup_arch(char **cmdline_p)
+#ifdef CONFIG_X86_64
+	init_cpu_to_node();
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