From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B7412C433E0 for ; Thu, 30 Jul 2020 16:23:40 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 832812082E for ; Thu, 30 Jul 2020 16:23:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="c6niimqc" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 832812082E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:48452 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k1BLH-0006ld-T1 for qemu-devel@archiver.kernel.org; Thu, 30 Jul 2020 12:23:39 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:37520) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k1BKi-0006Il-Ms for qemu-devel@nongnu.org; Thu, 30 Jul 2020 12:23:04 -0400 Received: from us-smtp-1.mimecast.com ([205.139.110.61]:32258 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1k1BKg-00023S-Sh for qemu-devel@nongnu.org; Thu, 30 Jul 2020 12:23:04 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1596126182; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=eL1r5d5Lru/ir4LgT5aN3BuJtxNAkEyqxioqtRxDqDw=; b=c6niimqcEnDcy9ZXxo+gzYPiuAdFLRZAoe7wvvBUR4mkeKoENvL2Hm5w4ZGoKsoW7l2Ggc KkH7EiIuCn3enbMjH9C73sy8jAYj9SXXZrcSYaeVKnFSQXBN5EjCJoKAMvm2M+dhoHMF/R 5TSGFfThjw2ADYoLgkLJzaRGHqnnJL4= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-256-Ff0NgRsmO7iaLAV04TpDHg-1; Thu, 30 Jul 2020 12:23:00 -0400 X-MC-Unique: Ff0NgRsmO7iaLAV04TpDHg-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 0CD82800465; Thu, 30 Jul 2020 16:22:59 +0000 (UTC) Received: from [10.3.114.255] (ovpn-114-255.phx2.redhat.com [10.3.114.255]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 286831002382; Thu, 30 Jul 2020 16:22:47 +0000 (UTC) Subject: Re: [PATCH V1 14/32] savevm: VMS_RESTART and cprsave restart To: Steve Sistare , qemu-devel@nongnu.org References: <1596122076-341293-1-git-send-email-steven.sistare@oracle.com> <1596122076-341293-15-git-send-email-steven.sistare@oracle.com> From: Eric Blake Organization: Red Hat, Inc. Message-ID: Date: Thu, 30 Jul 2020 11:22:46 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <1596122076-341293-15-git-send-email-steven.sistare@oracle.com> Content-Language: en-US X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=205.139.110.61; envelope-from=eblake@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/30 03:41:52 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -40 X-Spam_score: -4.1 X-Spam_bar: ---- X-Spam_report: (-4.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Daniel P. Berrange" , Juan Quintela , =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= , "Michael S. Tsirkin" , "Dr. David Alan Gilbert" , Markus Armbruster , Alex Williamson , Stefan Hajnoczi , Paolo Bonzini , =?UTF-8?Q?Marc-Andr=c3=a9_Lureau?= , =?UTF-8?Q?Alex_Benn=c3=a9e?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 7/30/20 10:14 AM, Steve Sistare wrote: > Add the VMS_RESTART variant of vmstate, for use when upgrading qemu in place > on the same host without a reboot. Invoke it using: > cprsave restart > > VMS_RESTART supports guest ram mapped by private anonymous memory, versus > VMS_REBOOT which requires that guest ram be mapped by persistent shared > memory. Subsequent patches complete its implementation. > > Signed-off-by: Steve Sistare > --- > +++ b/qapi/migration.json > @@ -1639,6 +1639,7 @@ > # > # @file: name of checkpoint file > # @mode: 'reboot' : checkpoint can be cprload'ed after a host kexec reboot. > +# 'restart': checkpoint can be cprload'ed after restarting qemu. This should be a modification to an enum type (the 'CprMode' type I suggested earlier in the series). -- Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3226 Virtualization: qemu.org | libvirt.org