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Re: Problems booting Ubuntu Jammy 22.04 PV domU from Jammy dom0



Just tested booting a Jammy domU as pv using pygrub from the build
below (works):

> sudo rpm -qa | grep -P 'xen|qemu'
xen-hypervisor-4.15.2-1.el8.x86_64
xen-doc-4.15.2-1.el8.x86_64
xen-4.15.2-1.el8.x86_64
xen-licenses-4.15.2-1.el8.x86_64
qemut-0.10.2+2-1.el8.x86_64
xen-libs-4.15.2-1.el8.x86_64
qemuu-img-5.1.0+2-1.el8.x86_64
xen-ocaml-4.15.2-1.el8.x86_64
qemuu-5.1.0+2-1.el8.x86_64
ipxe-roms-qemu-20181214-8.git133f4c47.el8.noarch
xen-runtime-4.15.2-1.el8.x86_64

We also boot with the pvgrub from the included stubdom.  Both of them
work with zstd compressed kernels dom0+domU since they use the same
xen libraries with latest patches.

Our fedora domU with zstd compressed kernels also work with pygrub and
pvgrub (stubdom).

Your dom0 seems problematic since you don't make clear if you
self-build xen-4.16 or use the Jammy packages from the Universe repo.

best wishes,
PryMar56
As mentioned by Andy S. the grub xen support has no lz4/zstd for
direct kernel boot, as done with pvgrub2.



 


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