Re: [Qemu-devel] [RFC PATCH v4 00/30] ACPI memory hotplug

[Gerd Hoffmann]

  Hi,

> - multiple memory buses can be registered. Memory buses of the real hw/chipset
>   or a paravirtual memory bus can be added.

IIRC q35 supports memory hotplug natively (picked up in some
discussion).  Is that correct?

What does the code emulate?  It doesn't look like it emulates q35 memory
hotplug ...

I think the paravirtual memory hotplug controller should be a PCI device
(which we then can add as function to the chipset).  Having some fixed
magic addresses is bad.

[ btw: same goes for ACPI PCI hotplug, that is hardly fixable without
       breaking compatibility though, for q35 we should be able to do
       better ].

cheers,
  Gerd