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Re: ANNOUNCEMENT: Intel/AMD x86 CPU microcode update system in non-free

On Tue, 06 Nov 2012, Stephan Seitz wrote:
> On Mon, Nov 05, 2012 at 06:12:53PM -0200, Henrique de Moraes Holschuh wrote:
> >I would like to bring to your attention the improved support for system
> >processor (CPU) microcode updates, for x86/i686/x86-64/amd64 systems
> >that was recently added to [non-free] Wheezy.
> Alas, this will not work for XEN users because I can’t update the
> microcode in Dom0 with xen-hypervisor 4.1. There exist kernel
> patches (over a year old), but according to the xen-devel ML they
> are not good enough to be included in the kernel.
> With XEN 4.2 the hypervisor can load the CPU microcode. Would this
> be a reason to include XEN 4.2 in Wheezy?

I wouldn't know, please ask the xen maintainers and the release manager
about it.  Maybe a backport of the relevant functionality is also a possible

What I do know is that lack of microcode update support is a severe issue

  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh

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