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



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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