Jamie Lokier wrote:

Avi Kivity wrote:
  

quoted

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?
    

*This* virtio-fb doesn't, but one feature I think a lot of users
(including me) would like is:

   Option to resize the guest desktop when the host desktop / host
   window / VNC client resizes.

   Tell the guest to provide multiple desktops when the host has
   multiple desktops, so things like twin monitors work nicely with
   guests.

   Relay EDID/Xrandr information and updates from host to guest, and
   generally handle hotplugging host monitors nicely.

Are there any real hardware standards worth emulating which do that?
  

vmware-vga.

If you have a little tool in a guest that uses the X extension that 
vmware vga implements, it actually works in qemu too.

Regards,

Anthony Liguoru