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+++ This bug was initially created as a clone of Bug #1660711 +++
Description of problem:
The cpu model fallback changed after restart libvirtd
Version-Release number of selected component (if applicable):
# rpm -q qemu-kvm libvirt
qemu-kvm-2.12.0-44.module+el8+2259+6d80f0a6.ppc64le
libvirt-4.5.0-14.module+el8+2210+474b8474.ppc64le
How reproducible:
100%
Steps to Reproduce:
1.
Prepare a guest with the cpu model element.
<cpu mode='host-model' check='partial'>
<model fallback='forbid'>power9</model>
</cpu>
2.
Start the guest and check the guest xml
virsh start test
virsh dumpxml test
The fallback is forbid now
3.
Restart libvirtd and check the guest xml
systemctl restart libvirtd
virsh dumpxml test
The fallback is changed to allow now
Actual results:
The fallback is changed
Expected results:
The fallback should not be changed
Additional info:
Could be reproduced on POWER8/9, could not be reproduced on x86_64