RE: [Xen-devel] poweroff in 3.2 and 3.3

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

>From: Keir Fraser [mailto:keir.fraser@xxxxxxxxxxxxx] 
>Sent: Thursday, November 20, 2008 4:52 PM
>On 20/11/08 08:21, "Tian, Kevin" <kevin.tian@xxxxxxxxx> wrote:
>
>>> If Xen itself itself is now robust to VCPUs still being
>>> runnable/running
>>> then I'm fine with warnings only. If Xen isn't, then forceful
>>> pausing is
>>> still needed (perhaps with some warnings in addition).
>>> 
>> 
>> what do you mean by "xen itself is robust to..."?
>
>It used to be the case that Xen CPU hotplug depended on CPUs 
>alreayd being
>idle. It would just go horribly wrong if non-idle VCPUs were 
>still running.
>

That should be still the current case, and running vcpus will
be migrated first before pulling down the CPUs (added by 
Haitao Shan). So I think we can just return error for S3 case
if there're other running vcpus other than dom0's vcpu0.

Thanks,
Kevin
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