[Xen-devel] RE: is a pure usermode backend possible?

[Paul Durrant <Paul.Durrant@xxxxxxxxxx>]

I guess it depends on what the specific backend needs to do. I can see that it 
makes sense to put a block backend in user space where process scheduling 
latency might not be such an issue. Putting a network backend, for instance, in 
user space will probably hurt.

  Paul

> -----Original Message-----
> From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-devel-
> bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of James Harper
> Sent: 19 November 2010 09:59
> To: xen-devel@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-devel] is a pure usermode backend possible?
> 
> Is there any reason why a purely user mode backend driver could not
> work
> in Dom0? I believe that the xenstore, grant table, and event channel
> interfaces all exist so I can't see why not, unless creating nodes
> under
> /local/domain/0/backend might confuse something?
> 
> Assuming it's possible, are there any performance reasons or other
> reasons why it might not be a good idea?
> 
> Thanks
> 
> James
> 
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