The patch cannot be applied to Ubuntu Bionic (18.04), since its libvirt version is older than the minimum required (mentioned in the patch).
The Ubuntu Cloud Archive for Bionic (eg, from Focal / Ussuri) can be used/patched though, as it provides a sufficiently newer version of libvirt. `QEMU >=2.9 and libvirt >= 4.4.0 are the mininum required versions` $ rmadison -a source libvirt -s bionic-updates # ubuntu archive libvirt | 4.0.0-1ubuntu8.21 | bionic-updates | source $ cmadison libvirt | grep bionic-updates # cloud archive libvirt | 5.0.0-1ubuntu2.6~cloud3 | stein | bionic-updates | source libvirt | 5.4.0-0ubuntu5.4~cloud1.1 | train | bionic-updates | source libvirt | 6.0.0-0ubuntu8.16~cloud0 | ussuri | bionic-updates | source ** Changed in: nova (Ubuntu Bionic) Status: New => Won't Fix -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1999814 Title: [SRU] Allow for specifying common baseline CPU model with disabled feature To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1999814/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs