Re: [Qemu-devel] [libvirt] [PATCH v3 2/2] Add configure option --enable-pc-1-0-qemu-kvm

["Michael S. Tsirkin" <mst@redhat.com>]

On Mon, Sep 22, 2014 at 12:42:47PM +0100, Daniel P. Berrange wrote:
> On Mon, Sep 22, 2014 at 02:36:55PM +0300, Michael S. Tsirkin wrote:
> > On Sun, Sep 21, 2014 at 03:38:59PM +0100, Alex Bligh wrote:
> > > Add a configure option --enable-pc-1-0-qemu-kvm and the
> > > corresponding --disable-pc-1-0-qemu-kvm, defaulting
> > > to disabled.
> > > 
> > > Rename machine type pc-1.0 to pc-1.0-qemu-git.
> > > 
> > > Make pc-1.0 machine type an alias of either pc-1.0-qemu-kvm
> > > or pc-1.0-qemu-git depending on the value of the config
> > > option.
> > > 
> > > Signed-off-by: Alex Bligh <alex@alex.org.uk>
> > 
> > I have to say, this one bothers me.
> > We end up not being able to predict what does pc-1.0
> > reference.
> 
> Yeah, this is not good. Any single machine type name should have
> fixed semantics - having two different semantics depending on build
> options means mgmt apps can no longer simply compare the machine
> type name to determine if it is a match with the same name on a
> different host.
> 
> 
> Regards,
> Daniel

Right. However, the fact remains that distros shipped qemu
and qemu-kvm that had pc-1.0 meaning different things.
What do you think about my idea to detect the meaning
for pc-1.0 based on argv[0]?


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