Xen users - Nov 2011 - Xen + pv_ops + migration

Hope I don''t annoy you but I''m totally stuck.

Here is my question to all xen users:

Is there anyone who has a running pv_ops kernel (like 2.6.32.x or
2.6.35.x or 2.6.38.x or 3.x) which supports the following operations
without a crash:

- boot with maxvcpus > vcpus
- then migrate from one dom0 to another
- raise the vcpus (via xm vcpu-set)
- take the cpus online in the domu

either on xen 4.0.x or 4.1.x with pv_ops dom0 OR patch dom0 (like
2.6.26.x) with or without pv_spinlock enabled.

While I''ve been doing this for more than a year now with a 2.6.26
kernel
with xen patches without one single crash, I''ve not been able to do it
in any way with newer pv_ops kernel.

Taking the cpus online crashes the domu whith "cpu stuck" messages and
silly timestamps like 10,000s.

Anyone, please :)

Regards,

Tim

On Wed, Nov 23, 2011 at 10:11:45PM +0100, Tim Evers
wrote:
> Hope I don''t annoy you but I''m totally stuck.
> 
Hello,

I added xen-devel to CC list..
> Here is my question to all xen users:
> 
> Is there anyone who has a running pv_ops kernel (like 2.6.32.x or
> 2.6.35.x or 2.6.38.x or 3.x) which supports the following operations
> without a crash:
> 
> - boot with maxvcpus > vcpus
> - then migrate from one dom0 to another
> - raise the vcpus (via xm vcpu-set)
> - take the cpus online in the domu
> 
> either on xen 4.0.x or 4.1.x with pv_ops dom0 OR patch dom0 (like
> 2.6.26.x) with or without pv_spinlock enabled.
> 
Please be more exact about your kernel versions:
- What dom0 kernel version? 
- What domU kernel version? 
- And what Xen version? 
> While I''ve been doing this for more than a year now with a 2.6.26
kernel
> with xen patches without one single crash, I''ve not been able to
do it
> in any way with newer pv_ops kernel.
> 
> Taking the cpus online crashes the domu whith "cpu stuck"
messages and
> silly timestamps like 10,000s.
> 
> Anyone, please :)
> 
> Regards,
> 
> Tim
> 
-- Pasi