Re: [Qemu-devel] [RFC PATCH v6 0/6] Virtio refactoring.

[Peter Maydell]

On 17 December 2012 15:45, Michael S. Tsirkin <address@hidden> wrote:
> Is the point to allow virtio-mmio?  Why can't virtio-mmio be just
> another bus, like a pci bus, and another binding, like the virtio-pci
> binding?

(a) the current code is really not very nice because it's not
actually a proper set of QOM/qdev devices
(b) unlike PCI, you can't create sysbus devices on the
command line, because they don't correspond to a user
pluggable bit of hardware. We don't want users to have to know
an address and IRQ number for each virtio-mmio device (especially
since these are board specific); instead the board can create
and wire up transport devices wherever is suitable, and the
user just creates the backend (which is plugged into the virtio bus).

-- PMM