From mboxrd@z Thu Jan  1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 198621] KVM Guest panics when running own guest, while being
 live migrated
Date: Thu, 08 Feb 2018 11:59:18 +0000
Message-ID: <bug-198621-28872-Md9jho9CAN@https.bugzilla.kernel.org/>
References: <bug-198621-28872@https.bugzilla.kernel.org/>
Mime-Version: 1.0
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 8BIT
To: kvm@kernel.org
Return-path: <kvm-owner@vger.kernel.org>
Received: from mail.wl.linuxfoundation.org ([198.145.29.98]:39922 "EHLO
        mail.wl.linuxfoundation.org" rhost-flags-OK-OK-OK-OK)
        by vger.kernel.org with ESMTP id S1750853AbeBHL7T (ORCPT
        <rfc822;kvm@vger.kernel.org>); Thu, 8 Feb 2018 06:59:19 -0500
Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1])
        by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3320C294B4
        for <kvm@vger.kernel.org>; Thu,  8 Feb 2018 11:59:19 +0000 (UTC)
In-Reply-To: <bug-198621-28872@https.bugzilla.kernel.org/>
Sender: kvm-owner@vger.kernel.org
List-ID: <kvm.vger.kernel.org>

https://bugzilla.kernel.org/show_bug.cgi?id=198621

Kashyap Chamarthy (kashyap.cv@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |kashyap.cv@gmail.com

--- Comment #3 from Kashyap Chamarthy (kashyap.cv@gmail.com) ---
(In reply to David Hildenbrand from comment #1)
> There is no support for nVMX migration yet. So trying to migrate a guest
> while it is using VMX itself is expected to fail.
> 
> Some people are currently working on this. Especially to
> - Migrate the nVMX state
> - Properly add and indicate VMX features in the CPU model to guarantee that
> no VMX features will be lost during migration.

Hmm, interesting.

FWIW, I was able to successfully migrate L2 guest to the destination L1 guest
(hypervisor).  My full QEMU command-lines for both L1s and L2 are here:

https://kashyapc.fedorapeople.org/virt/Migrate-a-nested-guest-08Feb2018.txt

With the below versions:

L0:

    $ uname -r; qemu-system-x86_64 --version; rpm -q libvirt-daemon-kvm
    4.13.13-300.fc27.x86_64+debug
    QEMU emulator version 2.11.0(qemu-2.11.0-4.fc27)
    Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers
    libvirt-daemon-kvm-3.10.0-2.fc27.x86_64

On both source and destination L1s:

    $ uname -r; qemu-system-x86_64 --version; rpm -q libvirt-daemon-kvm
    4.14.16-200.fc26.x86_64
    QEMU emulator version 2.10.0(qemu-2.10.0-4.fc26)
    Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers
    libvirt-daemon-kvm-3.7.0-2.fc26.x86_64

-- 
You are receiving this mail because:
You are watching the assignee of the bug.