From patchwork Wed Nov 22 19:20:22 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: George Dunlap X-Patchwork-Id: 10070837 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 253CB6038F for ; Wed, 22 Nov 2017 19:30:58 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1AA7429DBA for ; Wed, 22 Nov 2017 19:30:58 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0FB2B29DCC; Wed, 22 Nov 2017 19:30:58 +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 9192D29DBA for ; Wed, 22 Nov 2017 19:30:57 +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 1eHahB-0000CB-8U; Wed, 22 Nov 2017 19:28:29 +0000 Received: from mail6.bemta5.messagelabs.com ([195.245.231.135]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eHahA-0000Bs-G2 for xen-devel@lists.xenproject.org; Wed, 22 Nov 2017 19:28:28 +0000 Received: from [85.158.139.211] by server-15.bemta-5.messagelabs.com id 6A/99-20526-BDFC51A5; Wed, 22 Nov 2017 19:28:27 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprGIsWRWlGSWpSXmKPExsXitHSDve7t86J RBgtfclp83zKZyYHR4/CHKywBjFGsmXlJ+RUJrBmL/vxlLpjOW7Hu+1O2BsYO7i5GTg4JAX+J 3Y8PM4LYbAJ6EvOOf2XpYuTgEBFQkbi916CLkYuDWeAis8TtE0tZQWqEBVwkph//A2azCKhK/ HhzlxGknlfATuL9Ug+IkfISi7/vZAOxOYHCjybPB7OFBGwlTm2dywxhq0osfnCUHcTmFRCUOD nzCQuIzSwgIXHwxQvmCYy8s5CkZiFJLWBkWsWoUZxaVJZapGtopJdUlJmeUZKbmJmja2hgqpe bWlycmJ6ak5hUrJecn7uJERg6DECwg7FvlvMhRkkOJiVR3uDlIlFCfEn5KZUZicUZ8UWlOanF hxhlODiUJHhFgaEoJFiUmp5akZaZAwximLQEB4+SCO/xc0Bp3uKCxNzizHSI1ClGY45nM183M HNMu9raxCzEkpeflyolznsOpFQApDSjNA9uECy6LjHKSgnzMgKdJsRTkFqUm1mCKv+KUZyDUU mY9w3IFJ7MvBK4fa+ATmECOuXncWGQU0oSEVJSDYyWhj5L+wru/dzRfpFP3oRbzllvx+080cT NzcYR8QL+/pVPTspFcS1exGZYeVc2dX2zsnOFzZI/se8VfrrEGr3sKKtIuZn38E/d7rfX69dK yCfc3fAx/kLDbfV72YdztK949T9qn7SRUzXl14IfMifdy57vMDl1Ys5LPqsCXg0uSQlevtfad 5RYijMSDbWYi4oTAet2OL6pAgAA X-Env-Sender: prvs=49202577f=George.Dunlap@citrix.com X-Msg-Ref: server-14.tower-206.messagelabs.com!1511378899!69560426!4 X-Originating-IP: [66.165.176.63] X-SpamReason: No, hits=0.0 required=7.0 tests=sa_preprocessor: VHJ1c3RlZCBJUDogNjYuMTY1LjE3Ni42MyA9PiAzMDYwNDg=\n, received_headers: No Received headers X-StarScan-Received: X-StarScan-Version: 9.4.45; banners=-,-,- X-VirusChecked: Checked Received: (qmail 3012 invoked from network); 22 Nov 2017 19:28:26 -0000 Received: from smtp02.citrix.com (HELO SMTP02.CITRIX.COM) (66.165.176.63) by server-14.tower-206.messagelabs.com with RC4-SHA encrypted SMTP; 22 Nov 2017 19:28:26 -0000 X-IronPort-AV: E=Sophos;i="5.44,436,1505779200"; d="scan'208";a="460304777" From: George Dunlap To: Date: Wed, 22 Nov 2017 19:20:22 +0000 Message-ID: <20171122192024.21187-15-george.dunlap@citrix.com> X-Mailer: git-send-email 2.15.0 In-Reply-To: <20171122192024.21187-1-george.dunlap@citrix.com> References: <20171122192024.21187-1-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 v3 15/17] 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 c8fec4daa8..aa58fb0de3 100644 --- a/SUPPORT.md +++ b/SUPPORT.md @@ -324,6 +324,36 @@ 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