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

Konrad Rzeszutek Wilk
2011-10-12T20:52:35Z

On Wed, Oct 12, 2011 at 09:45:43PM +0200, Borislav Petkov wrote:
> On Wed, Oct 12, 2011 at 03:18:22PM -0400, Jeremy Fitzhardinge wrote:
> > While doing the whole boot time multiboot thing may offer some small
> > hypothetical technical advantages, it has the significant cost of just
> > complicating the whole deployment and use story.
>
> You simply can't call the need to apply ucode as early as possible a
> "hypothetical techical advantage." Other issues like how to handle ucode
> images and how to put them together and how distros distribute them
> and whether xen minimizes the amount of "specialness" or not are only
> secondary.

Why is it paramount to do it as early as possible? As in, even doing
it before Linux kernel is invoked is preferred than during initrd runtime?