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Re: [Xen-devel] Xen/Domain0 notification of a VM reboot

To: Satish Sangapu <xen.sks@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] Xen/Domain0 notification of a VM reboot
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Mon, 02 Nov 2009 17:14:34 +0000
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Thread-topic: [Xen-devel] Xen/Domain0 notification of a VM reboot
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The hardware registers used to initiate a reboot are emulated by qemu which
usually runs as a process in dom0. When those registers get accessed to
trigger a reboot, qemu notifies Xen, which notifies the dom0 toolstack, and
then a decision can be made as to what to do (e.g., restart the VM, destroy
the VM, ...).

 -- Keir

On 01/11/2009 14:04, "Satish Sangapu" <xen.sks@xxxxxxxxx> wrote:

> Hello.
> I have searched the internet/forums about this topic and I wasn't able to find
> any help so I thought I would ask here.
> Suppose a HVM guest reboots within the virtual machine context - how can Xen
> or Domain0 know about this event?
> Thanks,
> xen.sks

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