Re: [Xen-devel] Start xen on UEFI system with grub

[Fabio Fantoni <fantonifabio@xxxxxxxxxx>]

Il 02/11/2012 12:36, Daniel Kiper ha scritto:
> On Thu, Nov 01, 2012 at 07:57:30PM +0000, Jan Beulich wrote:
> > > > > Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx> 11/01/12 4:50 PM >>>
> > > On Tue, 11 Sep 2012, Jan Beulich wrote:
> > > > > > > On 11.09.12 at 15:17, Fabio Fantoni <fantonifabio@xxxxxxxxxx> wrote:
> > > > > xen.efi not compile when we build xen on Wheezy and probably is not
> > > > > possible boot with lvm volume, fallback options ecc...
> > > > Just get a suitable tool chain installed then.
> > > >
> > > > > UEFI with grub2 seem the best option but with xen hypervisor seem not
> > > > > load efi variable.
> > > > Sure, because only xen.efi has the code to deal with such.
> > > >
> > > > (Btw., I assume you aren't aware that any boot manager
> > > > whatsoever, other than the one coming with EFI, is sort of
> > > > bogus under EFI?)
> > > Unfortunately it looks like more and more people are of the opinion that
> > > grub2 is useful even on UEFI firmware.
> > > For example, it is pretty clear that Ubuntu is still going to boot Xen
> > > via grub2 no matter how the firmware looks like.
> > Then they need to be tought how to do it properly, the more that Linux itself
> > now is capable of booting without a boot loader (other than the EFI one).
> >
> > > What would it take to make Xen work properly with grub2 on a UEFI firmware?
> > I can't be that difficult.
> >
> > > I think that we should add it as a work item for Xen 4.3.
> > If you have someone to do that work. I'm willing to review the resulting
> > changes, but I currently don't see me doing anything here (as being totally
> > unimportant and - just to repeat that - conceptually wrong).
> Heh... I agree with Jan but there are so many things conceptually wrong
> used by millions of people and we could not change that. Let's fix
> (broke?) it. I am going to work on EFI stuff in upstream kernel and
> I think this task could be assigned to me too.
>
> Daniel
>
>
> -----
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> 01/11/2012
Thanks for getting this task. Hope to hear from you soon regard this, 
let us know as soon as you can post patches.

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