From mboxrd@z Thu Jan 1 00:00:00 1970 From: Subject: VCPU hotplug on KVM/ARM Date: Tue, 27 Feb 2018 15:01:17 +0530 Message-ID: <000e01d3afad$b9a13830$2ce3a890$@codeaurora.org> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1094332515934909775==" Return-path: Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 3EA0340257 for ; Tue, 27 Feb 2018 04:24:50 -0500 (EST) Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id sBOpmd+3B0IA for ; Tue, 27 Feb 2018 04:24:29 -0500 (EST) Received: from smtp.codeaurora.org (smtp.codeaurora.org [198.145.29.96]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id 070B1401CD for ; Tue, 27 Feb 2018 04:24:29 -0500 (EST) Received: from BTHAKUR (blr-bdr-fw-01_globalnat_allzones-outside.qualcomm.com [103.229.18.19]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: bthakur@codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id DEB8C6024C for ; Tue, 27 Feb 2018 09:31:19 +0000 (UTC) Content-Language: en-us List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu To: kvmarm@lists.cs.columbia.edu List-Id: kvmarm@lists.cs.columbia.edu This is a multipart message in MIME format. --===============1094332515934909775== Content-Type: multipart/alternative; boundary="----=_NextPart_000_000F_01D3AFDB.D359E960" Content-Language: en-us This is a multipart message in MIME format. ------=_NextPart_000_000F_01D3AFDB.D359E960 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Hi, I hope it is the right forum to post my query. I am currently looking at the possibility of adding a new VCPU to a running guest VM in KVM/ARM. I see that currently, it is not allowed to add a new VCPU to a guest VM, if it is already initialized. The first check in kvm_arch_vcpu_create() returns failure if it is already initialized. There was some work done in QEMU to add support for VCPU hotplug: https://lists.gnu.org/archive/html/qemu-arm/2017-05/msg00404.html But I am looking at the KVM side for enabling adding a new VCPU. If you can point me to any relevant work/resources, which I can refer to then it will help me. Thanks. Regards, Bhupinder ------=_NextPart_000_000F_01D3AFDB.D359E960 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi,

 

I hope it is = the right forum to post my query.

 

I am = currently looking at the possibility of adding a new VCPU to a running = guest VM in KVM/ARM. I see that currently, it is not allowed to add a = new VCPU to a guest VM, if it is already initialized. The first check in = kvm_arch_vcpu_create() returns failure if it is already = initialized.

 

There was some work done in QEMU to add support for = VCPU hotplug: https://lists.gnu.org/archive/html/qemu-arm/2017-05/msg00404.html

 

But I am looking at the KVM side for enabling adding a = new VCPU. If you can point me to any relevant work/resources, which I = can refer to then it will help me.

 

Thanks.

 

Regards,

Bhupinder

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