Description of problem:

Version-Release number of selected component (if applicable):
Satellite 6.14.0 Snap 13

How reproducible:
Always

Steps to Reproduce:
1. Prepare provisioning setup and sync RHEL9 OS and Kickstart repos.
2. Configure Libvirt CR
3. # hammer host create --name="pbvlzmmshx" --location="SEXSGiSTJBd" --organization="kDurvTWwY" --hostgroup="RJvMlS" --compute-resource-id="1" --compute-attributes="cpus=1, memory=6442450944, cpu_mode=default, start=1" --interface="compute_type=bridge,compute_bridge=br-1001" --volume="capacity=10" --provision-method="build" '

Actual results:
RHEL9 provisioning on Libvirt fails with Boot Errors

Expected results:
RHEL9 provisioning on Libvirt completes successfully.

Additional info:
Looks related error https://access.redhat.com/discussions/6968806 and this PR also look related https://github.com/fog/fog-libvirt/pull/127

After some investigation and discussion with @ekohlvan@redhat.com, this issue looks with cpu_mode=default which sets "custom (qemu64)" on Libvirt and when tried other cpu modes like host-model(set as custom (EPYC-Rome)) and host passthrough(set as host passthrough) this works correctly.
Also, For RHEL7 and RHEL8 provisioning cpu_mode=default custom(qemu64) works.