[Qemu-devel] Re: virtio-serial: An interface for host-guest communication

[Anthony Liguori]

Gerd Hoffmann wrote:
> On 08/14/09 10:15, Amit Shah wrote:
>> The guest code sort-of ends up looking like this after merging
>> virtio_console into virtio_serial.
>
> I think it should better go the other way around: add multichannel 
> support to virtio-concole, probably guarded by a feature flag so old 
> host+new guest and new host+old guest combinations continue to work.
>
>> Since there's support for only one console as of now, I've assigned port
>> #2 as the console port so that we hook into hvc when a port is found at
>> that location.
>
> Doesn't sound like this is going to be backward compatible ...
>
> Also I still think passing a 'protocol' string for each port is a good 
> idea, so you can stick that into a sysfs file for guests use.

Or drops ports altogether and just use protocol strings...

Regards,

Anthony Liguori