[Fwd: Re: What VM technology to use?]

[Daniel Mons]

Karl Bowden wrote:
> able to fault it. Dont get me wrong. I still think Xen is the best
> solution for businesses, but with it's flakey 32bit support in ubuntu
> and lack of out-of-the-box support for nvidia gpus, although it runs

I should mention that KVM's "solution" to the Nvidia thing is to pass 
kernel level instructions from the host to the guest.

This is not "support" for Nvidia GPUs, but rather a dirty and (if you're 
a purist) slightly insecure hack to make this work.

Xen on the other hand does no such thing, ensuring that no kernel level 
information in the guest be shared with the host.  End result is until 
Nvidia (or other GPU manufacturers) themselves add proper and correct 
Hypervisor support at a hardware level, Xen will most likely not support 
this level of hardware abstraction.

With that said, Xen was designed from the get-go for server 
virtualisation.  3D offloading is not a focus of theirs for that very 
reason.

-Dan