[Pkg-xen-devel] Bug#989560: xen-hypervisor-common: generates broken grub configuration on armhf

[Maximilian Engelhardt]

Package: xen-hypervisor-common
Version: 4.14.1+11-gb0b734a8b3-1
Severity: important

Installing xen-system-armhf in a test vm and running update-grub left me with 
a grub configuration that cannot boot the xen hypervisor and gets stuck in the 
grub menu. It's still possible to boot the normal linux kernel after manual 
selection. Grub outputs the following error:


Loading Xen 4.14-armhf ...
error: can't find command `multiboot'.
Loading Linux 5.10.0-7-armmp-lpae ...
error: can't find command `module'.
Loading initial ramdisk ...
error: can't find command `module'.

Press any key to continue...


The problem is that the /etc/grub.d/20_linux_xen file from the grub-common 
package generates a multiboot line for the xen hypervisor but there is no 
multiboot module available for grub on armhf.

I did a bit research but could not come up with a way to boot the xen 
hypervisor from grub on armhf, maybe somebody has more knowledge here.

This may be a bug in 20_linux_xen, but only installing xen-hypervisor-common 
causes a not working grub configuration to be generated, so I'm filing this 
against this package now. Feel free to reassign.
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