On Mon, 2020-04-06 at 16:51 -0400, Liang Yan wrote: > virt-install already uses 'host-passthrough' as default when no setup > for cmline '--cpu'. However, it will still use 'host-model' when comes > with '-cpu host'. This will be a problem for aarch64 platfrom as > 'host-model' for aarch64 kvm domain on aarch64 host is not supported yet. virt-install's --cpu host maps to libvirt's <cpu mode='host-model'/> while virt-install's --cpu host-passthrough maps to libvirt's <cpu mode='host-passthrough'/> These semantics are not architecture dependent and, while the choice of name is a bit unfortunate considering that QEMU's -cpu host and virt-install's --cpu host have different meanings, I think they're completely unambiguous and reasonably documented, and we should not mess with them. -- Andrea Bolognani / Red Hat / Virtualization
