linux-kernel - Re: 2.6.19 Microcode Update causes a ten second wait

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Date:	Mon, 06 Nov 2006 23:05:27 +0000
From:	Andrew Benton <b3nt@...anet.com>
To:	Arjan van de Ven <arjan@...radead.org>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.19 Microcode Update causes a ten second wait

Arjan van de Ven wrote:
> you're lucky, for me it hangs forever until I add this patch:
> 
> --- linux-2.6.18/arch/i386/kernel/microcode.c.org	2006-11-06 14:50:37.000000000 +0100
> +++ linux-2.6.18/arch/i386/kernel/microcode.c	2006-11-06 14:52:30.000000000 +0100
> @@ -577,7 +577,7 @@ static void microcode_init_cpu(int cpu)
>  	set_cpus_allowed(current, cpumask_of_cpu(cpu));
>  	mutex_lock(&microcode_mutex);
>  	collect_cpu_info(cpu);
> -	if (uci->valid)
> +	if (uci->valid && system_state==SYSTEM_RUNNING)
>  		cpu_request_microcode(cpu);
>  	mutex_unlock(&microcode_mutex);
>  	set_cpus_allowed(current, old);
> 

Thanks, that patch fixes the problem for me.

Andy

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