Xen users - Sep 2011 - run domU w/ higher kernel version as dom0

Hey folks,

 

Currently I am running a domU with 2.6.26-2-xen-amd6 on a 2.6.18-5-xen-amd64
host. I didn''t expect it to work but atm it runs without errors.

Am I right when saying that this will only be a problem if certain xen calls are
made which are available to the child but are not in the host? Do I have to
expect an unstable DomU?

 

Thanks for helping me understand.

 

Regards

Thomas

 

 



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>From: xen-users-bounces@lists.xensource.com
[xen-users-bounces@lists.xensource.com] On Behalf Of Thomas Pöhler
[tp@turtle-entertainment.de]
>Sent: 22 September 2011 18:40
>To: xen-users@lists.xensource.com
>Subject: [Xen-users] run domU w/ higher kernel version as dom0
>
>Hey folks,
>
>Currently I am running a domU with 2.6.26-2-xen-amd6 on a 2.6.18-5-xen-amd64
host. I didn’t expect it to work but atm it runs without errors.
>Am I right when saying that this will only be a problem if certain xen calls
are made which are available to the child but are not in the host? Do I have to
expect an unstable DomU?
>Thanks for helping me understand.
>
>Regards
>Thomas
Hi there,

looks like the DomU is Debian Lenny. :) There''s no issue with different
DomU and Dom0 kernels. Xen is baremetal hypervisor and that means that all DomUs
and also Dom0 are virtualized. DomUs talk to hypervisor, not to the privileged
Dom0. Privileged Dom0 is for Xen hypervisor to communicate with actual hardware
in computer. As far as you don''t stumble on any bugs , you should be
OK!


Regards

Matej

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