[PATCH] virtinst: use 'host-passthrough' as default 'host' on AArch64

[Pavel Hrdina]

On Mon, Apr 06, 2020 at 04:51:29PM -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.

I don't thing this is a good approach.  virt-install supports
'--cpu host-passthrough' and having '--cpu host' behave differently on
each architecture seems wrong to me.

If libvirt errors out correctly in case of '--cpu host' on aarch64 then
there is nothing else to do.  If libvirt is happy with that
configuration but it fails in QEMU or elsewhere with non-descriptive
error message then we can error out in virt-install.

Pavel
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