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

[Eduardo Habkost]

On Mon, Jun 18, 2018 at 08:18:16PM +0300, Michael S. Tsirkin wrote:
> On Mon, Jun 18, 2018 at 02:14:31PM -0300, Eduardo Habkost wrote:
> > > Sure if someone does that, we'll have no choice, but as long as 'pc' is
> > > shipped we shouldn't gratuitously break apps by changing the default.
> > 
> > Right.  I just want to make sure "omitting the machine-type may
> > stop working in the future" is documented somehow.
> 
> I still think we should just add links to the qemu binary and
> use ARGV to detect the machine type.
> 
> qemu-pc-i386
> qemu-q35-x86_64

Why having separate QEMU binaries would help?  We still need to
define and document what will happen when both the machine-type
and the QEMU binary are omitted in the domain XML.

Personally I prefer to document this as "we recommend you always
specify the machine-type" instead of "we recommend you always
specify the QEMU binary path".

-- 
Eduardo