From: Markus Armbruster <armbru@redhat.com>
To: Keir Fraser <keir.fraser@eu.citrix.com>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: Re: Backend in user space, how is its kernel dev unregistered?
Date: Wed, 04 Mar 2009 20:51:17 +0100 [thread overview]
Message-ID: <87k575yslm.fsf@pike.pond.sub.org> (raw)
In-Reply-To: <C5D4843C.42CE%keir.fraser@eu.citrix.com> (Keir Fraser's message of "Wed\, 04 Mar 2009 19\:17\:16 +0000")
Keir Fraser <keir.fraser@eu.citrix.com> writes:
> On 04/03/2009 19:02, "Markus Armbruster" <armbru@redhat.com> wrote:
>
>> 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.
>
> Presumably these should watch xenstore themselves and tear down state when
> they see state changes from the frontend, or the corresponding xenstore
> directory disappear completely. Just like in the kernel's xenbus_probe.c.
>
> -- Keir
Stupid question: how can a user space driver get *kernel* devices unregistered?
next prev parent reply other threads:[~2009-03-04 19:51 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-04 19:02 Backend in user space, how is its kernel dev unregistered? Markus Armbruster
2009-03-04 19:14 ` Keir Fraser
2009-03-04 19:17 ` Keir Fraser
2009-03-04 19:51 ` Markus Armbruster [this message]
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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