Re: [PATCH v4 0/4] virtio: Clean up scatterlists and use the DMA API

[Christian Borntraeger <borntraeger@de.ibm.com>]

On 05/09/14 04:57, Andy Lutomirski wrote:
> There's a third option: try to make virtio-mmio work everywhere
> (except s390), at least in the long run.  This other benefits: it
> makes minimal hypervisors simpler, I think it'll get rid of the limits
> on the number of virtio devices in a system.  ARM is already going
> this direction, and I imagine that PPC support would be
> straightforward (it's already using devicetree).

Well this chance is gone.
When virtio was first introduced we though about abstraction (mmio,hypercalls, pci ops depending on the platform as part of the transport. There was even a virtio over serial line as potential implementation), but we had to do a fully PCI variant to please windows guests IIRC.

Christian