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

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Message-ID: <20111013070050.GA501@aftab>
Date:	Thu, 13 Oct 2011 09:00:50 +0200
From:	Borislav Petkov <bp@...64.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Jeremy Fitzhardinge <jeremy@...p.org>,
	Borislav Petkov <bp@...64.org>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.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 08:03:50PM -0400, H. Peter Anvin wrote:
> On 10/12/2011 05:00 PM, Jeremy Fitzhardinge wrote:
> >
> > Presumably we'd want some way to make all possible microcode files
> > available to the hypervisor/kernel so that there's no need to construct
> > the bootloader config for a specific CPU vendor (or worse, CPU model).
> > So that would need either some way of specifying multiple files, or a
> > wrapper which can contain multiple files?
> >
> 
> I have been thinking a "bundle" format with a per-vendor header followed 
> by the microcode in the appropriate format for each vendor.

Yes, makes sense. Keep it as simple as possible.

-- 
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Boris.

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