Re: [Xen-devel] Backend in user space, how is its kernel dev unregistered?

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 04/03/2009 19:02, "Markus Armbruster" <armbru@xxxxxxxxxx> wrote:

> Unregistering is the device driver's job: it watches xenstore, and when
> it sees the front end shut down, it calls device_unregister().
> 
> But what if the device driver is in user space?  vfb and vkbd are.  I
> can't see how their kernel devices can ever get unregistered.
> 
> If that is true, any ideas on how to plug the leak?

Backends also tear down when their xenstore directory is removed. I think
that's the job of xenbus_cleanup_devices() in the 2.6.18 tree.

 -- Keir



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