From mboxrd@z Thu Jan  1 00:00:00 1970
From: Olaf Hering <olaf@aepfle.de>
Subject: Re: [PATCH 2/6] xen/hvm kexec: unregister shutdown+sysrq
	watches during reboot
Date: Thu, 28 Jul 2011 16:07:10 +0200
Message-ID: <20110728140710.GA28817@aepfle.de>
References: <4E30A9BC0200007800073B1F@nat28.tlf.novell.com>
	<20110728052500.GA13940@aepfle.de>
	<1311850379.24408.119.camel@cthulhu.hellion.org.uk>
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8
Return-path: <xen-devel-bounces@lists.xensource.com>
Content-Disposition: inline
In-Reply-To: <1311850379.24408.119.camel@cthulhu.hellion.org.uk>
List-Unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xensource.com>
List-Help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-Subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
Sender: xen-devel-bounces@lists.xensource.com
Errors-To: xen-devel-bounces@lists.xensource.com
To: Ian Campbell <Ian.Campbell@citrix.com>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>, Jan Beulich <JBeulich@novell.com>
List-Id: xen-devel@lists.xenproject.org

On Thu, Jul 28, Ian Campbell wrote:

> > Are you suggesting that there have to be ways for a domU to query the
> > state of its registered watches and shut them all down during very early
> > boot?
> 
> Perhaps the xenstore protocol could be enhanced with a mechanism to
> clear all existing watches? A kernel could call that at start of day.

I poked around in the xenstore sources, there is appearently nothing
that can be used to shutdown all. Or would calling XS_RELEASE do the trick?

Olaf