There's a related fix for enabling CPU feature flags that landed in upstream nova and charm-nova-compute via LP: #1750829 as a result of Meltdown.
There's mention in the upstream fix [1] that a future patch will allow disabling of CPU feature flag but I'm not sure if that has landed. I'll dig some more to see. [1] https://review.opendev.org/#/c/534384/ Fyi the config for the nova-compute charm that corresonds to this change is cpu-model-extra-flags, defined as a space delimited list of specific CPU flags for libvirt/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1853200 Title: cpu features hle and rtm disabled for security are present in /usr/share/libvirt/cpu_map.xml To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1853200/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs