Re: [Qemu-devel] Would virtio support 64 bit address for vring virtqueue?

[Rusty Russell]

"Xie, Huawei" <address@hidden> writes:
> If this is the case, one possible fix would be:
>       Write two continuous 32bit DWORD to combine a 64bit address
>       Use the upper 12 bits of PFN val to indicate if it is combined write
> In this way, we wouldn't break other virtio driver, register layout
> and only need a few lines of modification.

Note that (with OASIS) we are currently working on a v1.0 of the virtio
spec.  I recommend the OASIS virtio-dev mailing list
( https://www.oasis-open.org/mlmanage/ ) and in particular the thread on
Michael Tsirkin's proposal on using PCI capabilities:

https://lists.oasis-open.org/archives/virtio-comment/201308/msg00087.html

Cheers,
Rusty.