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

[Avi Kivity]

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

>   
> > NB the device tree contains no host configuration information.
> >     
>
> So, it wouldn't e.g. include the path to the image file for a block
> device? That would always be specified on the command line?
>   

Or in a different file.  I agree splitting host and guest configuration 
is a must-have, this ensures portability of virtual machines across 
hosts and time.

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