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Re: [Qemu-devel] [PATCH 0/4] s390: Allow hotplug of s390 CPUs


From: Christian Borntraeger
Subject: Re: [Qemu-devel] [PATCH 0/4] s390: Allow hotplug of s390 CPUs
Date: Mon, 9 Nov 2015 16:37:54 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0

Am 09.11.2015 um 16:35 schrieb Christian Borntraeger:
> Am 09.11.2015 um 16:28 schrieb Andreas Färber:
>> Hi,
>>
>> Am 09.11.2015 um 16:17 schrieb Matthew Rosato:
>>> To subsequently hotplug a CPU:
>>>
>>> Issue 'cpu-add <id>' from qemu monitor, or use virsh setvcpus --count <n> 
>>> <domain>, where <n> is the total number of desired guest CPUs.
>>
>> What exactly is still missing for you to use the standard device_add?
>>
>> Last time I checked (a while ago...) some patches were stuck on the x86
>> side, and I don't recall hearing any feedback from the s390x side in my
>> KVM Forum CPU hotplug session.
> 
> libvirt uses "cpu-add" unconditionally for hotplugging, so we certainly 
> want to support that. 

Sorry, hit send too early. I assume you want us to support device_add of
a CPU in addition to that. Correct? 





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