From: Keir Fraser <keir.xen@gmail.com>
To: Bruce Granger <vivagin@yeah.net>, xen-devel@lists.xensource.com
Subject: Re: How could Xen know a certain GuestOS have already shutdown?
Date: Fri, 21 Sep 2012 09:06:01 +0100 [thread overview]
Message-ID: <CC81DE79.3F4C6%keir.xen@gmail.com> (raw)
In-Reply-To: <1348197814609-5711421.post@n5.nabble.com>
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When the guest shuts down, Xen sends VIRQ_DOM0_EXC to dom0. This is picked
up by xenstored which fires the @releaseDomain watch. Anyone in dom0 can
register on that watch. Or see libxl__domaindeathcheck_* functions in
libxl/libxl_event.c for another method to pick up on domain shutdowns.
-- Keir
On 21/09/2012 04:23, "Bruce Granger" <vivagin@yeah.net> wrote:
> Hi everyone! This is probably a familiar problem, but I haven't found anything
> in the archives or from google yet. I also talked with my parterners but we
> haven't got a sure conclusion. Recently I¹m caring about a question about
> shutdown operation: When we shutdown a GuestOS by giving the command in its
> terminal, how can hypervisor get to know that this GuestOS is about to
> shutdown and How can hypervisor know that GuestOS has already done the work of
> shutdown? In other word, is there any signal or something else that GuestOS
> deliver to hypervisor to notice that it will shutdown or it has accomplished
> its shutdown work? Does anyone know the detailed process? Thanks for your
> help!
>
> View this message in context: How could Xen know a certain GuestOS have
> already shutdown?
> <http://xen.1045712.n5.nabble.com/How-could-Xen-know-a-certain-GuestOS-have-al
> ready-shutdown-tp5711421.html> Sent from the Xen - Dev mailing list archive
> <http://xen.1045712.n5.nabble.com/Xen-Dev-f2473738.html> at Nabble.com.
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel
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next prev parent reply other threads:[~2012-09-21 8:06 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-21 3:23 How could Xen know a certain GuestOS have already shutdown? Bruce Granger
2012-09-21 8:06 ` Keir Fraser [this message]
2012-09-24 13:12 ` Bruce Granger
-- strict thread matches above, loose matches on Subject: below --
2012-09-24 17:09 Bruce Granger
2012-09-25 8:22 ` Ian Campbell
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