multiboot2 and module2 boot issues via GRUB2

[Roman Shaposhnik <roman@xxxxxxxxxx>]

Hi!

seems like I've run into an issue with multiboot2 and module2

commands that I can't quite explain. Since it may be something

super simply and silly -- I wanted to reach out here before I do

a GRUB/Xen/LK source deepdive.

So here's the deal: whenever I boot straight up Linux kernel

I can do the following sequence of commands:

   linux /kernel

   initrd foo.cpio.gz bar.cpio.gz

and have linux kernel effectively stack content of bar.cpio.gz

on top of foo.cpio.gz and present a unified initramfs that way.

I'm trying to replicate it with Xen, but:

     multiboot2 /boot/xen.gz

     module2 /kernel

     module2 foo.cpio.gz

     module2 bar.cpio.gz

only seems to be picking up foo.cpio.gz

Has anyone run into this issue before?

Thanks,

Roman.