Re: [Qemu-devel] [PATCH v2] 9pfs: fix dependencies

[Peter Maydell]

On 9 August 2017 at 10:07, Thomas Huth <address@hidden> wrote:
> While virtio-pci and virtio-ccw seem to require separate dedicated
> devices (e.g. virtio-9p-pci and virtio-9p-ccw) for everything,

You don't *have* to use the dedicated virtio-foo-pci device;
if you like you can manually plug together the virtio-pci
transport and the virtio-foo-device backend yourself. The
'fused' device is just for convenience and compatibility
with existing command lines. There is no fused device for
virtio-mmio because the board itself creates the transport
devices so the user only needs to create the backends
(which then auto-plug into the virtio bus).

thanks
-- PMM