Problem with Grub?

[Christoph Kaminski <mangel@xxxxxx>]

Hi All

I've a problem with booting xen. If I add some parameters to the kernel
(not xen) in grub, then xen says "not an ELF binary"/"Panic on CPU 0"
and rebootet the host.

Without parameters on kernel does xen load the Dom0 kernel (but doesnt
find the root partition etc)

What can be the problem?

I use "Xen made easy" packeges (xen 4.13.2) on CentOS 8.
I've tried 3 grub Versions already with still the same error...

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Greetz