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

["Jan Beulich" <jbeulich@xxxxxxxx>]

>>> 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).

Jan


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