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Re: [Qemu-devel] VCPU Hot-Unplug Feature

From: Alexandre DERUMIER
Subject: Re: [Qemu-devel] VCPU Hot-Unplug Feature
Date: Mon, 4 May 2015 19:49:08 +0200 (CEST)


they are a lot of patches sent on the mailing list recently,

cpu hotplug|unplug with device_add|del


----- Mail original -----
De: "Fahri Cihan Demirci" <address@hidden>
À: "qemu-devel" <address@hidden>
Envoyé: Lundi 4 Mai 2015 18:24:43
Objet: [Qemu-devel] VCPU Hot-Unplug Feature


We are interested in being able to remove a VCPU from an active Libvirt domain 
running under QEMU/KVM. However, currently that does not seem to be possible 
because QEMU does not provide an interface for hot-unplugging a VCPU. The 
corresponding feature page [1] on the QEMU wiki mentions the cpu-add interface 
and the generalized device add/del interface. So, my question is, is there 
someone working on a cpu-remove interface or making progress in the generalized 
device add/del interface to hot-unplug VCPUS? If you are in any way interested 
in or planning such a feature, we may provide feedback, testing or help in the 
development effort. Any other input, guidance or corrections would be also most 
welcome. Thank you. 

[1] http://wiki.qemu.org/Features/CPUHotplug 

Best regards, 
Fahri Cihan Demirci 

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