Re: Suppress APIC errors on UP x86-64.

Andi Kleen
2006-02-24T01:45:42Z

On Friday 24 February 2006 02:42, Dave Jones wrote:
> Quite a few UP x86-64 laptops print APIC error 40's repeatedly
> when they run an SMP kernel (And Fedora doesn't ship a UP x86-64 kernel
> any more). We can suppress this as there's not really anything we
> can do about them.

No we need to fix the APIC errors, not hide them.

-Andi

>
> Signed-off-by: Dave Jones <davej@redhat.com>
>
> --- linux-2.6.14/arch/x86_64/kernel/apic.c~ 2005-12-07 15:17:33.000000000 -0500
> +++ linux-2.6.14/arch/x86_64/kernel/apic.c 2005-12-07 15:18:16.000000000 -0500
> @@ -1032,7 +1032,8 @@ asmlinkage void smp_error_interrupt(void
> 6: Received illegal vector
> 7: Illegal register address
> */
> - printk (KERN_DEBUG "APIC error on CPU%d: %02x(%02x)\n",
> + if (num_online_cpus() > 1)
> + printk (KERN_DEBUG "APIC error on CPU%d: %02x(%02x)\n",
> smp_processor_id(), v , v1);
> irq_exit();
> }
>