Re: [Xen-users] Using xen with separated hardware configurations

[Philip Van Hoof <spam@xxxxxxxxxxx>]

On Tue, 2005-07-12 at 13:49 +0100, Mark Williamson wrote:

> What kind of device is it?  If it's a block device or a network
> device, this is already easily doable.  If it's some other kind of
> device then the sharing semantics are less clear.

It's an USB-stick like device. I'm guessing a block-device. We don't
have the source code of the kernel module and/or software that uses the
device. We get this from our supplier.

> Xen 3.0 should have the ability to attach an arbitrary USB device to a
> domain. You won't be able to share it simultaneously but there would
> be nothing to stop you swapping the device between the domains as
> required.

Ok.

> > whereas for the device on the PCI-bus we only want to 
> > make it accessible for one of the two instances.

> You can do this in Xen 2.0 but it's a little unfriendly at the moment
> - I see you've found some information on this.  Note that once you've
> givien a domain control of a device,on the PCI bus you do have to
> trust it (and its applications) to be non-malicious.

Of course. I understand.

> People are using the PCI bus sharing part of Xen very happily "in the
> wild" to allow their guest domains to function as routers / firewalls,
> Asterisk PBXes, 
> etc.

Sounds promising. 

Thanks


-- 
Philip Van Hoof, Software Developer @ Cronos
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