Avi Kivity wrote:
On 06/15/2009 12:09 PM, Mark McLoughlin wrote:
I think the point is that you don't need version numbers if you
have a
proper device tree.
How do you add a new attribute to the device tree and, when a supplied
device tree lacking said attribute, distinguish between a device tree
from an old version of qemu (i.e. use the old default) and a partial
device tree from the VM manager (i.e. use the new default) ?
-baseline 0.10
That's a version number :-)
(I was responding to Anthony's "you don't need a version number")
If you want to prevent incompatibilities, you need to make everything
new (potentially including bugfixes) non-default. Eventually the
default configuration becomes increasingly unusable and you need a new
baseline. You must still be able to fall back to the old baseline for
older guests. I don't think games with configuration files can hide
that.
-M pc1
-M pc2
etc.
This is pretty easy to maintain with config files.
Regards,
Anthony Liguori
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