Hi,
[ xen-users in CC as I know a few there are using a decompressed
kernel workaround for LZ4 and might be hit by this too ]
I'm currently evaluating switching from booting Xen guests with grub
Xen PV (grub-mkimage -O x86_64-xen) to Xen PVH (grub-mkimage -O
i386-xen_pvh). I've noticed that a decompressed guest kernel refuses
to boot under PVH with the following error:
Loading Linux 5.4.0-52-generic ...
error: invalid magic number.
That same kernel boots with PV.
If I use the LZ4-compressed version of that kernel as supplied by
the distribution (Ubuntu 20.04), it works PVH. I therefore can only
conclude that PVH grub doesn't like kernels with no compression. Is
that expected?