On Fri, Apr 14, 2023 at 03:14:46PM -0600, Jim Fehlig wrote: > On aarch64, the default CPU for machine type 'virt' is 'cortex-a15', > which works fine for <domain type='qemu'>, but fails for type='kvm' > > 2023-04-14T21:03:03.392256Z qemu-system-aarch64: KVM is not supported for > this guest CPU type > > Do we need to go a step further and define a default CPU (presumably > host-passthrough) for machine type 'virt' for kvm domains on aarch64?
Even for TCG, you're probably going to want to use something newer and more featureful than the default. Heck, even on x86_64 the default CPU model is pretty terrible and you really want to be using either host-model or host-passthrough. There's some movement in QEMU land when it comes to adding proper support for CPU models on Arm. So I would leave things as they are for now, in the hope that in the not-so-distant future we're going to be able to make host-model work across both TCG and KVM. -- Andrea Bolognani / Red Hat / Virtualization
