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+++ This bug was initially created as a clone of Bug #1998945 +++

After we rebase to QEMU 6.1 we need to ensure old machine types stays compatible with previous version. 

Check the changes and prepare fix for keeping machine types compatible.

Bulk update: Move RHEL-AV bugs to RHEL8.

FWIW, looks like there is not much to do for s390x here: hw_compat_6_0 only contains entries that are not related to s390x, so this should not affect the s390x machine type.

Verified forth and back migration works with:

Source host
qemu-kvm-6.0.0-29.module+el8.5.0+12386+43574bac.s390x

Destination host
qemu-kvm-6.1.0-3.module+el8.6.0+12982+5e169f40.s390x

Guest
s390-ccw-virtio-rhel8.5.0
kernel-4.18.0-348.el8.s390x

Auto test case
virsh.migrate_vm.positive_testing.live_migration.bi_directional.with_postcopy

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Moderate: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2022:1759