Re: [Qemu-devel] [RFC PATCH 0/9] Configurable PCI device addresses

[Daniel P. Berrange]

On Thu, Jan 22, 2009 at 02:06:08PM -0600, Anthony Liguori wrote:
> Markus Armbruster wrote:
> >This patch series makes PCI device addresses configurable for a number
> >of devices.  For now, I just covered the ones I consider important
> >and/or where the change is somewhat invasive.
> >
> >Why is a configurable PCI device address useful?  Currently, QEMU
> >assigns a few device addresses statically, and the rest dynamically on
> >a first come, first serve basis[*].  If you add or remove a device,
> >all devices registering later change address.  I'm told a certain
> >operating system that can't be named in polite company can get rather
> >upset about that.
> >
> >Making the device address configurable looks like the simplest
> >solution to this problem.  Only users who really mind changing
> >addresses have to deal with the new configuration parameter.
> >  
> 
> I think we're starting to get to the tipping point where we really just 
> need to introduce a machine config file.

I think we passed that point a long time ago :-)  If someone were to make
use of every single QEMU command line arg, with many disks & nics we're
probably already hitting the ARGV size limit. 

Daniel
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