Re: [Qemu-devel] [PATCH RFC] hw/pc: set q35 as the default x86 machine

[Michael S. Tsirkin]

On Tue, Jun 05, 2018 at 05:23:59PM +0100, Daniel P. Berrangé wrote:
> On Tue, Jun 05, 2018 at 07:20:24PM +0300, Michael S. Tsirkin wrote:
> > On Tue, Jun 05, 2018 at 02:29:48PM +0100, Daniel P. Berrangé wrote:
> > > Existing domains wasn't the case I was concerned about. Consider you have
> > > libvirt 4.4.0 intsalled and you deploy a *new* domain from a prebuilt
> > > disk image "foo".
> > 
> > I see. How about q35 as default for new domains only?
> 
> There's no concept of "new" or "old" domains in libvirt. It just sees XML
> and boots it and has no way of knowing if this is a brand new deployment
> never booted before or an old deployed booted for the 1000th time.
> 
> Regards,
> Daniel

Oh I mean when XML is created using e.g. virt-install

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