On 03.11.2009, at 07:21, Avi Kivity wrote:

On 11/03/2009 12:09 AM, Alexander Graf wrote:

quoted

When we want to create a full VirtIO based machine, we're still  
missing
graphics output. Fortunately, Linux provides us with most of the  
frameworks
to render text and everything, we only need to implement a transport.

So this is a frame buffer backend written for VirtIO. Using this  
and my
patch to qemu, you can use paravirtualized graphics.

What does this do that cirrus and/or vmware-vga don't?

Work on non-MMIO machines.

quoted

This is especially important on machines that can't do MMIO, as all  
current
graphics implementations qemu emulates I'm aware of so far fail here.

s390 virtual desktops?

Well - have you ever tried installing SLES / RHEL on an S390? If not,  
give it a shot and comment again :-)

Alex