Re: [Qemu-devel] [PATCH 0/8] virtio-console: Move to qdev, multiple devices, generic ports

[Anthony Liguori]

On 01/14/2010 07:17 AM, Amit Shah wrote:
> Hello people,
>
> This iteration of the series removes the START and END flags (and
> hence the header associated with each buffer). That's the major change
> since the last submission.
>    

I think the biggest issue remaining is the buffering.

I think this is a pretty fundamental issue to work out since it 
determines the very nature of the transport (stream vs. datagram).

Because you have to put a max buffer size on the transport, I think 
buffering is a really flawed approach provably equivalent to just 
increasing the message size within the transport.  In general, the later 
is a better approach because then the guest is using it's memory vs. 
using host memory.

Regards,

Anthony Liguori