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

[Markus Armbruster <armbru@redhat.com>]

Anthony Liguori <anthony@codemonkey.ws> writes:

> 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.

Makes sense to me.  But considering the idea has been mulled around
for so long (half a year?) without obvious progress (obvious to
ignorant me!), I chose to scratch my itch right away.  Any chance I
can get it scratched now, or do I have to wait for the machine
description file feature?

> Paul, you mentioned you were working on something before?  Care to
> update us on the status?

Yes, please!

> I know there was a fair bit of support before for a FDT based machine
> config.
>
> Regards,
>
> Anthony Liguori