Re: [Qemu-devel] [PATCH RFC] virtio-pci: add MMIO property

[Avi Kivity]

On 03/19/2012 08:57 PM, Michael S. Tsirkin wrote:
> > 
> > Should be done via an extra BAR (with the same layout, perhaps extended)
> > so compatibility is preserved.
>
> No, that would need guest changes to be of use.  The point of this hack
> is to make things work for Linux guests where PIO does not work.

It only works if all guest's PCI layer knows to deal with the bit flip
correctly.  I imagine it isn't true for at least the seabios virtio drivers.

-- 
error compiling committee.c: too many arguments to function