From: Markus Armbruster <armbru@redhat.com>
To: xen-devel@lists.xensource.com
Subject: Backend in user space, how is its kernel dev unregistered?
Date: Wed, 04 Mar 2009 20:02:27 +0100 [thread overview]
Message-ID: <8763ip158c.fsf@pike.pond.sub.org> (raw)
There's a curious asymmetry in how Xen backend devices are registered
and unregistered.
Registering is the job of xenbus_probe.c: it watches xenstore, and when
a device node shows up, it calls device_register().
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?
next reply other threads:[~2009-03-04 19:02 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-04 19:02 Markus Armbruster [this message]
2009-03-04 19:14 ` Backend in user space, how is its kernel dev unregistered? Keir Fraser
2009-03-04 19:17 ` Keir Fraser
2009-03-04 19:51 ` Markus Armbruster
2009-03-04 22:29 ` Keir Fraser
2009-03-05 12:40 ` Markus Armbruster
2009-03-05 13:17 ` Gerd Hoffmann
2009-03-05 13:18 ` Keir Fraser
2009-03-05 9:40 ` Gerd Hoffmann
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