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

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Message-ID: <4E9614AE.1060508@zytor.com>
Date:	Wed, 12 Oct 2011 15:29:02 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
CC:	Borislav Petkov <bp@...64.org>,
	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 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.

	-hpa
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