Re: Add option to skip cpu feature and model verification in libvirt and rely on qemu 'enforce' option

On Wed, Nov 23, 2022 at 18:34:38 +0530, manish.mishra wrote: This won't work as libvirt should add a default CPU model there and replace check='none' with check='full' once the domain starts. But we actually have a way to do what you need even without any change in libvirt: <cpu mode='host-passthrough' check='none'> <topology .../> <numa> ... </numa> ... </cpu> <qemu:commandline> <qemu:arg value='-cpu'/> <qemu:arg value='Icelake-Server-v4,enforce,x2apic=on,hv-time,kvm-pv-eoi=on'/> </qemu:commandline> This will result in -cpu host,migratable=on ... -cpu Icelake-Server-v4,enforce,x2apic=on,hv-time,kvm-pv-eoi=on and libvirt will not touch the check='none' attribute once the domain starts and it would not complain about any unknown CPU features or models as there's nothing to check in <cpu/>. That is, there's no need to come up with anything special to support passing arbitrary options to -cpu. Jirka