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Re: [Xen-devel] [PATCH 2/6] xen/hvm kexec: unregister shutdown+sysrq wat

To: Olaf Hering <olaf@xxxxxxxxx>, Ian Campbell <Ian.Campbell@xxxxxxxxxx>
Subject: Re: [Xen-devel] [PATCH 2/6] xen/hvm kexec: unregister shutdown+sysrq watches during reboot
From: Keir Fraser <keir.xen@xxxxxxxxx>
Date: Thu, 28 Jul 2011 15:13:10 +0100
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Jan Beulich <JBeulich@xxxxxxxxxx>
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On 28/07/2011 15:07, "Olaf Hering" <olaf@xxxxxxxxx> wrote:

> 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?

XS_INTRODUCE

 K.

> Olaf
> 
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