linux-kernel - Re: [patch 0/4] x86: AMD microcode patch loading v2 fixes

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Date:	Thu, 31 Jul 2008 19:23:09 -0700
From:	Max Krasnyansky <maxk@...lcomm.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Dmitry Adamushko <dmitry.adamushko@...il.com>,
	Peter Oruba <peter.oruba@....com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Tigran Aivazian <tigran@...azian.fsnet.co.uk>,
	"H. Peter Anvin" <hpa@...or.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [patch 0/4] x86: AMD microcode patch loading v2 fixes

Ingo Molnar wrote:
> * Dmitry Adamushko <dmitry.adamushko@...il.com> wrote:
> 
>> I've even suggested to consider doing microcode update somewhere 
>> earlier in start_secondary() (say, right before cpu_idle()). So it'd 
>> be done as ealry as possible + we don't mess up with cpu-hotplug 
>> events.
> 
> i have no problems with that approach in principle. Microcode updates 
> are special and black magic things anyway.
> 

I still think we should just do the update via schedule_work_on() and be 
done with it. Maybe in theory it should be done as early as possible but 
in practice hotplug handler -> workqueue will be soon enough, I think.

Max
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