On Mon, Jun 04, 2018 at 04:38:22AM +0300, Michael S. Tsirkin wrote: > On Sun, Jun 03, 2018 at 12:27:49PM +0300, Marcel Apfelbaum wrote: > > Moving to QEMU 3.0 seems like a good opportunity for such a change. > > > > I440FX is really old and does not support modern features like IOMMU. > > Q35's SATA emulation is faster than pc's IDE, native PCI express hotplug > > is cleaner than ACPI based one and so on... > > > > Also the libvirt guys added very good support for the Q35 machine (thanks!). > > > > Management software should always specify the machine type and for the > > current setups, adding '-machine pc' to the command line is not such a > > big deal. > > > > In time the pc machine will fade out and we will probably stop adding > > new versions at some point. > > > > Signed-off-by: Marcel Apfelbaum <marcel.apfelb...@gmail.com> > > For command line users, I think changing the default isn't nice. > > Yes it's easy to add -machine pc but there's no documentation > that tells you to do so. Add to that shortcuts like -cdrom > stop working, hotplug needs extra bridges to work, and one > can see that while management tool users benefit from q35, > command line users will suffer. > > Can't we add a tag for management without changing the command line > default? How about "management-default"? "recommended"? "latest"?
We could add new aliases if they are useful for management software, but we would need a well-defined use case and set of requirements+expectations for the new alias. -- Eduardo
