Re: Improve default machine type selection
On Wed, Mar 15, 2023 at 03:40:18PM +0100, Ján Tomko wrote:
On a Monday in 2023, Jim Fehlig wrote:
> If an explicit machine type is not specified in the VM config, the qemu
> driver will select the first machine type in the list of machine types
> for the specified accelerator. See virQEMUCapsGetPreferredMachine
>
> https://gitlab.com/libvirt/libvirt/-/blob/master/src/qemu/qemu_capabiliti...
>
> On my test machines, this works reasonably well for x86_64 where the
> first machine type is pc-i440fx-7.1. But for aarch64, the first machine
> is integratorcp, which is not very useful with maxCpus=1 and other
> limitations.
Is it possible to run such machine with libvirt?
If not, we could say our default is faulty and pick a new one.
Good point.
If we can prove that it's not possible to define a working VM when
using the default machine type (integratorcp for Arm and spike_v1.10
for RISC-V), I think we'd have a fairly solid argument in favor of
changing our defaults.
--
Andrea Bolognani / Red Hat / Virtualization