Re: Configuration vs. compat hints [was Re: [Qemu-devel] [PATCHv3 03/13] qemu: add routines to manage PCI capabilities]

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On 06/15/2009 03:48 PM, Anthony Liguori wrote:
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.
How do you add a new attribute to the device tree and, when a supplied

-M pc1
-M pc2

Certainly preferable to -baseline.

This is pretty easy to maintain with config files.

Let's not tie the two together.

--
error compiling committee.c: too many arguments to function

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