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

Ian Jackson
2011-10-17T13:48:12Z

H. Peter Anvin writes ("[Xen-devel] Re: [PATCH 0/3] x86/microcode: support for microcode update in Xen dom0"):
> On 10/12/2011 12:18 PM, Jeremy Fitzhardinge wrote:
> > But for right now, this patch seems like the pragmatic solution.
>
> No.

This is a quite astonishing response. At the moment, microcode
updates in Xen systems are _completely broken_ because they do not
happen at all.

The existing machinery in Linux is the way it is and you say it's no
good - how about we just remove it all too ? Because that's what
you're suggesting is the proper course for Xen!

At the moment, Jeremy's patch is a significant improvement. It is
quite unreasonable to block it because some pie-in-the-sky scheme for
doing it at boot time does not exist yet.

Either:
(a) Jeremy's patch should go in
(b) all after-boot microcode update code should be removed from Linux

Ian.
(very cross)