Re: [Xen-users] Boot loop after upgrade

[Roger Pau Monné <roger.pau@xxxxxxxxxx>]

On Tue, Aug 29, 2017 at 12:14:11PM +0200, Michel D'HOOGE wrote:
> Hello,
> 
> I believe I have the same problem as Duncan...
> I'm also using ArchLinux and when I upgraded the kernel from 4.11.9-1
> to 4.12.8-2, it stopped booting through Xen. I have a black screen and
> the only working option is to power off. I do have the "noreboot"
> option set, but because (I guess) of an NVidia Optimus GPU, I can't
> see anything. It's also EFI-based.
> 
> I can still boot any kernel versions if I skip XEN. And I can still
> boot through xen if I use the LTS kernel (4.9.44-1, then 4.9.45-1).
> 
> So it must have something to do with the 4.12 version of the kernel,
> but it is very hard to debug (and I don't have any serial output on my
> laptop). I tried many different configurations, both at Xen and kernel
> levels (e.g. acpi=off, earlyprintk=efi) but nothing works.
> 
> I'll try to diff the kernel configurations when I have some spare time!

I don't know much about EFI, but it seems 4.12 (and probably older
kernels) have a bug when running on Xen with EFI. The following patch
should fix the bug:

https://lkml.org/lkml/2017/6/23/391

Roger.

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxx
https://lists.xen.org/xen-users