RE: [Xen-users] Xen handling of graphics card

["Petersson, Mats" <mats.petersson@xxxxxxx>]

> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Jean-Eric
> Sent: 12 January 2006 16:55
> Cc: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-users] Xen handling of graphics card
> 
> 
> > Xen offers vga emulation through a VNC backend.  The 
> Xen-Windows video 
> > driver you speak of would probably just be a VNC driver that turns 
> > graphic commands directly into VNC encoding rather than 
> traversing the 
> > VGA emulation layer.  Perhaps this beast already exists?  
> Maybe this 
> > is
> 
> You mean that Xen has it own VNC server embedded?
> Or does it depend on an external one managed by the OS?

The VNC server is managed by Dom0. 
> 
> > impossible?  I wonder what its performance would be compared to xen 
> > vga-emulation and the regular VNC server?
> > 
> > All that said, I'm sure xen vga-emulation and regular VNC 
> servers are 
> > good enough for most purposes.
> 
> I don't see how Windows will work in Xen without such a 
> thing. A graphic card is *mandatory* with Windows...
> Or do I misunderstand something?

The graphics card is emulated in Qemu, the graphics operations are
converted to VNC commands there, and you see on the VNC display what
would appear on the Windows VGA display. 

--
Mats
> -jec
> 
> 
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