linux-kernel - Re: [PATCH 1/3] x86, intel: Output microcode revision

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Message-ID: <20110525190424.GA17793@khazad-dum.debian.net>
Date:	Wed, 25 May 2011 16:04:24 -0300
From:	Henrique de Moraes Holschuh <hmh@....eng.br>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Andi Kleen <ak@...ux.intel.com>, Andi Kleen <andi@...stfloor.org>,
	x86@...nel.org, linux-kernel@...r.kernel.org,
	Borislav Petkov <bp@...en8.de>
Subject: Re: [PATCH 1/3] x86, intel: Output microcode revision

On Wed, 25 May 2011, Ingo Molnar wrote:
> So displaying a non-fatal 'info' message about it would in fact be 
> rather wise. Nothing scary, but we'd like to be informed.

A printk with levels info or notice, I do agree to be a good idea.  In fact,
I like the idea a lot.

WARN() and kernel tainting, which is what I understand was being proposed
before, I cannot agree with.

OTOH, IMO mismatched microcode should be grounds for more serious measures.
And that includes fixing the annoying userspace ABI that encourages bad
behaviour in the first place and makes it harder to do the proper thing.

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh
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