linux-kernel - Re: [patch 05/11] [PATCH 05/11] x86: Moved microcode.c to microcode

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Date:	Fri, 19 Sep 2008 06:07:52 -0700
From:	Arjan van de Ven <arjan@...radead.org>
To:	Peter Oruba <peter.oruba@....com>
Cc:	cate@...ian.org, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Tigran Aivazian <tigran@...azian.fsnet.co.uk>,
	LKML <linux-kernel@...r.kernel.org>,
	Dmitry Adamushko <dmitry.adamushko@...il.com>
Subject: Re: [patch 05/11] [PATCH 05/11] x86: Moved microcode.c to
 microcode_intel.c.

On Fri, 19 Sep 2008 13:59:39 +0200
Peter Oruba <peter.oruba@....com> wrote:

> Some additonal words regarding the current user space issues:
> 
> IMHO the most convenient way to update microcode is through the
> firmware loading interface instead of microcode_ctl. This reduces
> user-space responsibilities to loading the correct module at boot
> time and to place the microcode patch file at the right location via
> package installation. The problems mentioned in this thread would
> then probably disappear as well. What do you guys think?

while I absolutely don't disagree with what you say, breaking existing
userspace is not an option.
Yes I very much would like for microcode_ctl to die as well (in fact,
that was one of the reasons we had the microcode code use
request_firmware), but that doesn't mean we can just ditch
compatibility ;(
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