QEMU - add a "deprecated-features" feature group (more-or-less David's code) libvirt - recognize a new model name "host-recommended" - query QEMU for host-model + deprecated-features and cache it in caps file (something like <hostRecCpu>) - when guest is defined with "host-recommended", pull <hostRecCPU> from caps when guest is started (similar to how host-model works today) If this is sufficient, then I can then get to work on this. My question is what would be the best way to include the deprecated features when calculating a baseline or comparison. Both work with the host-model and may no longer present an accurate result. Say, for example, we baseline a z15 with a gen17 (which will outright not support CSSKE). With today's implementation, this might result in a ridiculously old CPU model which also does not support CSSKE. The ideal response would be a z15 - deprecated features (i.e. host-recommended on a z15), but we'd need a way to flag to QEMU that we want to exclude the deprecated features. Or am I totally wrong about this? -- Regards, Collin Stay safe and stay healthy
