[libvirt] [Qemu-devel] change x86 default machine type to Q35?
Eduardo Habkost
ehabkost at redhat.com
Tue Jul 11 14:47:52 UTC 2017
On Tue, Jul 11, 2017 at 10:13:05AM +0200, Gerd Hoffmann wrote:
> Hi,
>
> > Concerning QEMU, could we maybe simply emit a warning a la
> >
> > "you did not specify a machine type with the -M option, so you are
> > currently running the the 'pc' machine type. Please note that
> > future
> > versions of QEMU might use the 'q35' machine type instead. If you
> > require the 'pc' machine type for your setting, then please specify
> > it with the -M option."
>
> Warnings tend to get ignored until things are actually break, so I
> don't think this helps much. I think simply not having a default
> machine type (as already suggested elsewhere in this thread) is the
> best way to deal with this. That way we don't silently change
> behavior. It also is in line with what we have on arm where we already
> require the user to explicitly pick a machine type.
If we do that, we probably should wait for libvirt to adapt and
choose its own default. Current libvirt would pick an arbitrary
machine-type (the first one in the query-machines list) as the
default.
--
Eduardo
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