Re: [Qemu-devel] [PATCH] qemu: piix: PCI bridge ACPI hotplug support

[Kevin O'Connor]

On Mon, Jun 10, 2013 at 04:45:53PM -0500, Anthony Liguori wrote:
> This discussion comes down to two things I think: (a) our existing
> firmware interface is pretty poor (b) we are duplicating work because of
> firmware licensing.
> 
> We can fix (a) and there's lots of value in doing that in terms of
> improving support for other architectures.  We've discussed (b) in other
> threads and I've stated my opinion on the direction we need to take.

I'm not concerned about (b).

I'm quite curious how you are planning to solve (a).  I think it would
help move this conversation forward if you could take a couple acpi
tables in use today (eg, madt, srat) and describe the future format
and location for each field in those tables.  I think it would also be
useful if you could do the same for a couple DSDT entries (eg,
\_SB.PCI0, \_SB.PCI0.ISA) and also describe how you plan to have the
guest build the AML from that info.

-Kevin