linux-kernel - [PATCH] x86_64: not set boot cpu in cpu_present

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Date:	Sun, 27 Jan 2008 18:27:17 -0800
From:	Yinghai Lu <Yinghai.Lu@....COM>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [PATCH] x86_64: not set boot cpu in cpu_present_map again

[PATCH] x86_64: not set boot cpu in cpu_present_map again

in init/main.c boot_cpu_init() already does that before setup_arch

Signed-off-by: Yinghai Lu <yinghai.lu@....com>

Index: linux-2.6/arch/x86/kernel/setup_64.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/setup_64.c
+++ linux-2.6/arch/x86/kernel/setup_64.c
@@ -446,12 +446,6 @@ void __init setup_arch(char **cmdline_p)
 
 	early_quirks();
 
-	/*
-	 * set this early, so we dont allocate cpu0
-	 * if MADT list doesnt list BSP first
-	 * mpparse.c/MP_processor_info() allocates logical cpu numbers.
-	 */
-	cpu_set(0, cpu_present_map);
 #ifdef CONFIG_ACPI
 	/*
 	 * Read APIC and some other early information from ACPI tables.
--
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