linux-kernel - Re: [PATCH 0/2] x86/microcode/amd: Do not overwrite specific patch levels

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Message-ID: <20150709150341.GB23766@khazad-dum.debian.net>
Date:	Thu, 9 Jul 2015 12:03:41 -0300
From:	Henrique de Moraes Holschuh <hmh@....eng.br>
To:	Borislav Petkov <bp@...en8.de>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Aravind Gopalakrishnan <Aravind.Gopalakrishnan@....com>,
	X86 ML <x86@...nel.org>
Subject: Re: [PATCH 0/2] x86/microcode/amd: Do not overwrite specific patch
 levels

On Wed, 01 Jul 2015, Borislav Petkov wrote:
> Certain patch levels supplied by the BIOS should not be upgraded and
> overwritten by the microcode loader because doing so leaves the system
> dead in the water.
> 
> The two below provide for filtering out those levels and avoiding the
> update, thereby making those patch levels final.

Is there any way to notify the user that 'processor microcode updates are
not available on this system except through a firmware update' ?

-- 
  "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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