[libvirt] [RFC] kvm: x86: export vCPU halted state to sysfs

Viktor Mihajlovski mihajlov at linux.vnet.ibm.com
Tue Feb 6 10:29:46 UTC 2018


On 01.02.2018 21:26, Eduardo Habkost wrote:
> On Thu, Feb 01, 2018 at 09:15:15PM +0100, Radim Krčmář wrote:
>> 2018-02-01 12:54-0500, Luiz Capitulino:
>>>
>>> Libvirt needs to know when a vCPU is halted. To get this information,
>>
>> I don't see why upper level management should care about that, a single
>> bit about halted state that can be incorrect at the time it is processed
>> seems of very limited use.
> 
> I don't see why, either.
> 
> I'm CCing libvir-list and the people involved in the code that
> added halt state to libvirt domain statistics.
> 
I've posted a libvirt patch to disable query-cpus in the domain stats
collection for all architectures other than s390. This should alleviate
the problem until we have a better method to obtain arch-specific cpu state.

-- 
Regards,
 Viktor Mihajlovski




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