Fw: [PATCH] x86_64: fix SMP boot lockup on some machines

From: Andrew Morton
Date: Mon Jul 25 2005 - 22:33:56 EST

People who are experiencing early-boot lockups on x86_64
might find this useful..

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@xxxxxxx>

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)

go[MASTER] = 0;
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