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Date: Mon, 18 Jul 2005 14:58:58 +0200
From: Andi Kleen <ak@suse.de>
To: "Alexander Y. Fomichev" <gluk@php4.ru>
Cc: Linus Torvalds <torvalds@osdl.org>,
       Kernel Mailing List <linux-kernel@vger.kernel.org>, admin@list.net.ru,
       Git Mailing List <git@vger.kernel.org>, ak@suse.de
Subject: Re: 2.6.12 hangs on boot
Message-ID: <20050718125857.GF8459@wotan.suse.de>
References: <200506221813.50385.gluk@php4.ru> <Pine.LNX.4.58.0506241446440.11175@ppc970.osdl.org> <200507181527.16652.gluk@php4.ru>
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Can you please test if this patch fixes it?

-Andi


Don't compare linux processor index with APICID

Fixes boot up lockups on some machines where CPU apic ids
don't start with 0

Signed-off-by: Andi Kleen <ak@suse.de>

Index: linux/arch/x86_64/kernel/smpboot.c
===================================================================
--- linux.orig/arch/x86_64/kernel/smpboot.c
+++ linux/arch/x86_64/kernel/smpboot.c
@@ -211,7 +211,7 @@ static __cpuinit void sync_master(void *
 {
 	unsigned long flags, i;
 
-	if (smp_processor_id() != boot_cpu_id)
+	if (smp_processor_id() != 0)
 		return;
 
 	go[MASTER] = 0;