Xen devel - Nov 2009 - Xen/Domain0 notification of a VM reboot

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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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@gmail.com> 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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