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

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Date:	Thu, 13 Oct 2011 11:57:08 +0200
From:	Borislav Petkov <bp@...64.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Jeremy Fitzhardinge <jeremy@...p.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 Thu, Oct 13, 2011 at 03:33:52AM -0400, Borislav Petkov wrote:
> Bottomline is, extending initrd handling to deal with multiple initrd
> images might turn out to be easier to do than the linked list deal.

Alternatively and IMHO, we could avoid the bootloader enabling by
making the ucode part of the initramfs and pull up some of the
prepare_namespace() work in kernel_init() before smp_init() so that we
can have it ready for when bootstrapping the cores.

-- 
Regards/Gruss,
Boris.

Advanced Micro Devices GmbH
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