linux-kernel - Re: [PATCH 0/3] x86/microcode: support for microcode update in Xen dom0

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Message-ID: <20111012223836.GA29740@aftab>
Date:	Thu, 13 Oct 2011 00:38:37 +0200
From:	Borislav Petkov <bp@...64.org>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	the arch/x86 maintainers <x86@...nel.org>,
	Tigran Aivazian <tigran@...azian.fsnet.co.uk>,
	Xen Devel <xen-devel@...ts.xensource.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 0/3] x86/microcode: support for microcode update in Xen
 dom0

On Wed, Oct 12, 2011 at 06:33:28PM -0400, Jeremy Fitzhardinge wrote:
> On 10/12/2011 03:29 PM, H. Peter Anvin wrote:
> > On 10/12/2011 03:27 PM, Jeremy Fitzhardinge wrote:
> >>
> >> The current scheme has worked pretty well so far; there doesn't seem to
> >> be a huge concern about it.  Have there been actual observed failures
> >> with the current mechanism, or is the drive to make it earlier driven by
> >> an aesthetic desire to make it "as it should be"?
> >>
> >
> > Yes, there has.  There is at least one case where we have to print an
> > error message saying "update your BIOS" because our current microcode
> > update is too late.
> 
> Is that K8 errata 93 or something else?

AFAIR, that was an Atom erratum fix.

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