From patchwork Mon Nov 13 15:41:25 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: George Dunlap X-Patchwork-Id: 10056355 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 6F62C60365 for ; Mon, 13 Nov 2017 16:00:40 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5FC8729463 for ; Mon, 13 Nov 2017 16:00:40 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5446029466; Mon, 13 Nov 2017 16:00:40 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id C0C7029463 for ; Mon, 13 Nov 2017 16:00:39 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eEH80-00020S-LA; Mon, 13 Nov 2017 15:58:28 +0000 Received: from mail6.bemta6.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eEH7y-0001yy-Tq for xen-devel@lists.xenproject.org; Mon, 13 Nov 2017 15:58:27 +0000 Received: from [193.109.254.147] (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256 bits)) by server-2.bemta-6.messagelabs.com id 1E/0A-05188-221C90A5; Mon, 13 Nov 2017 15:58:26 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprCIsWRWlGSWpSXmKPExsXitHRDpK7iQc4 og1vX5Cy+b5nM5MDocfjDFZYAxijWzLyk/IoE1oz3r2ILZvBW3FuxgLWBsYO7i5GDQ0LAX+Lq 4tQuRk4ONgE9iXnHv7KAhEUEVCRu7zXoYuTiYBa4yCxx+8RSVpAaYQFHiY7rr9hAbBYBVYlfq 48wgdi8AnYSrQfvsoPYEgLyEou/7wSr4QSKX/yyEqxGSMBW4sO6mewQtqrE4gdH2SF6BSVOzn zCAmIzC0hIHHzxgnkCI+8sJKlZSFILGJlWMaoXpxaVpRbpmuolFWWmZ5TkJmbm6BoamOnlphY XJ6an5iQmFesl5+duYgSGDQMQ7GCcftn/EKMkB5OSKK/KZ/YoIb6k/JTKjMTijPii0pzU4kOM MhwcShK8t/dzRgkJFqWmp1akZeYAAxgmLcHBoyTC+w0kzVtckJhbnJkOkTrFaMzxbObrBmaOa Vdbm5iFWPLy81KlxHnvg5QKgJRmlObBDYJF1iVGWSlhXkag04R4ClKLcjNLUOVfMYpzMCoJ89 4AmcKTmVcCt+8V0ClMQKdIgXzBW1ySiJCSamBkju0uOSxYs/xM9vV3WtO2Oz/TtTgZsNZ0VYL rcoFrvMvnNdkl5klJ3P/Hu8SP5V/tuqzgqyrF7VY/r3/7z65vYvo4ftcc3uWXczSZOtmdnC8u kXQoO2UbWtO9OZDTp/yXxBtlNo/mqcEZV/x/2N+29JbYWcDxIdn3MMu0Df8/8DmzlwoteKnEU pyRaKjFXFScCACoUao0pwIAAA== X-Env-Sender: prvs=483948db6=George.Dunlap@citrix.com X-Msg-Ref: server-5.tower-27.messagelabs.com!1510588700!110792079!3 X-Originating-IP: [66.165.176.89] X-SpamReason: No, hits=0.0 required=7.0 tests=sa_preprocessor: VHJ1c3RlZCBJUDogNjYuMTY1LjE3Ni44OSA9PiAyMDMwMDc=\n, received_headers: No Received headers X-StarScan-Received: X-StarScan-Version: 9.4.45; banners=-,-,- X-VirusChecked: Checked Received: (qmail 28645 invoked from network); 13 Nov 2017 15:58:25 -0000 Received: from smtp.citrix.com (HELO SMTP.CITRIX.COM) (66.165.176.89) by server-5.tower-27.messagelabs.com with RC4-SHA encrypted SMTP; 13 Nov 2017 15:58:25 -0000 X-IronPort-AV: E=Sophos;i="5.44,389,1505779200"; d="scan'208";a="451511657" From: George Dunlap To: Date: Mon, 13 Nov 2017 15:41:25 +0000 Message-ID: <20171113154126.13038-15-george.dunlap@citrix.com> X-Mailer: git-send-email 2.15.0 In-Reply-To: <20171113154126.13038-1-george.dunlap@citrix.com> References: <20171113154126.13038-1-george.dunlap@citrix.com> MIME-Version: 1.0 Cc: Stefano Stabellini , Wei Liu , Konrad Wilk , Andrew Cooper , Tim Deegan , George Dunlap , Julien Grall , Paul Durrant , Jan Beulich , Anthony Perard , Ian Jackson , Roger Pau Monne Subject: [Xen-devel] [PATCH 15/16] SUPPORT.md: Add statement on migration RFC X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: George Dunlap --- Would someone be willing to take over this one? CC: Ian Jackson CC: Wei Liu CC: Andrew Cooper CC: Jan Beulich CC: Stefano Stabellini CC: Konrad Wilk CC: Tim Deegan CC: Roger Pau Monne CC: Anthony Perard CC: Paul Durrant CC: Julien Grall --- SUPPORT.md | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/SUPPORT.md b/SUPPORT.md index a8388f3dc5..e72f9f3892 100644 --- a/SUPPORT.md +++ b/SUPPORT.md @@ -294,6 +294,36 @@ This includes exposing event channels to HVM guests. ## High Availability and Fault Tolerance +### Live Migration, Save & Restore + + Status, x86: Supported, with caveats + +A number of features don't work with live migration / save / restore. These include: + * PCI passthrough + * vNUMA + * Nested HVM + +XXX Need to check the following: + + * Guest serial console + * Crash kernels + * Transcendent Memory + * Alternative p2m + * vMCE + * vPMU + * Intel Platform QoS + * Remus + * COLO + * PV protocols: Keyboard, PVUSB, PVSCSI, PVTPM, 9pfs, pvcalls? + * FlASK? + * CPU / memory hotplug? + +Additionally, if an HVM guest was booted with memory != maxmem, +and the balloon driver hadn't hit the target before migration, +the size of the guest on the far side might be unexpected. + +See docs/features/migration.pandoc for more details + ### Remus Fault Tolerance Status: Experimental