From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34229) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YpKUW-0001SH-NB for qemu-devel@nongnu.org; Mon, 04 May 2015 13:49:17 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YpKUS-0006HH-M7 for qemu-devel@nongnu.org; Mon, 04 May 2015 13:49:16 -0400 Received: from mailpro.odiso.net ([89.248.209.98]:56347) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YpKUS-0006GV-G9 for qemu-devel@nongnu.org; Mon, 04 May 2015 13:49:12 -0400 Date: Mon, 4 May 2015 19:49:08 +0200 (CEST) From: Alexandre DERUMIER Message-ID: <1954990735.5679237.1430761748082.JavaMail.zimbra@oxygem.tv> In-Reply-To: <20150504162442.GA12825@francium.user.ytu.skyatlas.com> References: <20150504162442.GA12825@francium.user.ytu.skyatlas.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Subject: Re: [Qemu-devel] VCPU Hot-Unplug Feature List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Fahri Cihan Demirci Cc: qemu-devel Hi, they are a lot of patches sent on the mailing list recently, cpu hotplug|unplug with device_add|del https://www.redhat.com/archives/libvir-list/2015-February/msg00084.html ----- Mail original ----- De: "Fahri Cihan Demirci" =C3=80: "qemu-devel" Envoy=C3=A9: Lundi 4 Mai 2015 18:24:43 Objet: [Qemu-devel] VCPU Hot-Unplug Feature Hello,=20 We are interested in being able to remove a VCPU from an active Libvirt dom= ain running under QEMU/KVM. However, currently that does not seem to be pos= sible 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 i= nterface and the generalized device add/del interface. So, my question is, = is there someone working on a cpu-remove interface or making progress in th= e generalized device add/del interface to hot-unplug VCPUS? If you are in a= ny way interested in or planning such a feature, we may provide feedback, t= esting or help in the development effort. Any other input, guidance or corr= ections would be also most welcome. Thank you.=20 [1] http://wiki.qemu.org/Features/CPUHotplug=20 Best regards,=20 Fahri Cihan Demirci=20