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[Xen-devel] Re: [PATCH 0/3] x86/microcode: support for microcode update

To: Borislav Petkov <bp@xxxxxxxxx>
Subject: [Xen-devel] Re: [PATCH 0/3] x86/microcode: support for microcode update in Xen dom0
From: "H. Peter Anvin" <hpa@xxxxxxxxx>
Date: Wed, 12 Oct 2011 15:49:51 -0700
Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx>, Xen Devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, the arch/x86 maintainers <x86@xxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>, Tigran Aivazian <tigran@xxxxxxxxxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>
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The stickiest part of all of this is where to leave the microcode so the kernel can get to it way early. We could use the linked list, but that would mean bootloader enabling; another idea was to stick it as a prefix to the initramfs identified by a signature.

        -hpa


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