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Hello,
we've been running Xen as our hypervisor for many years now, with
Debian being both the host OS and the guest OS in each VM. But
since Debian 13, their kernel for whatever reason can't boot
anymore on Xen with the error messages:
Loading Linux 6.12.48-amd64 ...
error: not xen image.
Loading initial ramdisk ...
error: you need to load the kernel first.
Press any key to continue...
A different kernel compiled by myself based on the config of an
older 6.12.x config from Debian still boots, but I really can't
figure out what difference between them actually causes it to not
be able to boot anymore. I even went through the Gentoo Wiki [1],
where I could actually find differences, but I got no clue how to
resolve them (and also I don't know if they even make a
difference):
- "Support for running as a PVH guest" doesn't seem to be an
option anymore, the option is now called "Xen PVH guest support"
- "Bus options (PCI etc.) -> Xen PCI Frontend" seems to be
entirely gone
Sure, some modules are market as M in Debian's config compared to
the Gentoo wiki, but that was also the case in the past. Does
anybody have a full list of kernel configs needed for a Linux
kernel to boot on Xen? For reference, these are our configs for
the Xen guests:
name = "ts"
type = "pv"
kernel = "/usr/lib/grub-xen/grub-x86_64-xen.bin"
memory = 4096
maxmem = 4096
vcpus = 4
maxvcpus = 4
disk = [ 'phy:/dev/xen-guests/ts,sda,w' ]
vif = [ 'mac=00:16:3e:33:b7:3f,bridge=xenbr0' ]
acpi = 1
pus="6-31"
device_model_version = "qemu-xen"
device_model_override = "/usr/bin/qemu-system-x86_64"
Best regards
Richard
[1]:
https://wiki.gentoo.org/wiki/Xen#Creating_an_unprivileged_domain_.28domU.29
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