Re: [Qemu-devel] approaches to 3D virtualisation

[Avi Kivity]

On 12/14/2009 02:03 PM, Paul Brook wrote:
> [3] Obviously if you emulate lame hardware like ne2k or IDE then 
> performance
> will suck. However emulation of a high-end NIC of SCSI HBA should get within
> spitting distance of virtio.
>    

Practically the only difference performance-wise between virtio and 
high-end controllers is that the ring index is located in a chip 
register on real hardware, and in memory for virtio (plus hardware can 
ask virtio not to notify).

Real hardware assumes guest->controller traffic is cheap, which isn't 
true for virtio/kvm.

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