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

[Andrew Morton <akpm@osdl.org>]

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@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;
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/