From patchwork Mon Sep 5 08:52:15 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 9313211 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 22BE1607D3 for ; Mon, 5 Sep 2016 08:58:47 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0F89B2897B for ; Mon, 5 Sep 2016 08:58:47 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0413A289BC; Mon, 5 Sep 2016 08:58:47 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id E823E2897B for ; Mon, 5 Sep 2016 08:58:45 +0000 (UTC) Received: from localhost ([::1]:53094 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bgpjn-00024W-PZ for patchwork-qemu-devel@patchwork.kernel.org; Mon, 05 Sep 2016 04:58:45 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54558) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bgpeR-0006GY-Pi for qemu-devel@nongnu.org; Mon, 05 Sep 2016 04:53:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bgpeG-0008LV-Lz for qemu-devel@nongnu.org; Mon, 05 Sep 2016 04:53:11 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:48832) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bgpeG-0008LF-CX for qemu-devel@nongnu.org; Mon, 05 Sep 2016 04:53:00 -0400 Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.17/8.16.0.17) with SMTP id u858qo1M107463 for ; Mon, 5 Sep 2016 04:52:55 -0400 Received: from e06smtp05.uk.ibm.com (e06smtp05.uk.ibm.com [195.75.94.101]) by mx0a-001b2d01.pphosted.com with ESMTP id 257sgcpavb-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Mon, 05 Sep 2016 04:52:55 -0400 Received: from localhost by e06smtp05.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Mon, 5 Sep 2016 09:52:49 +0100 X-IBM-Helo: d06dlp02.portsmouth.uk.ibm.com X-IBM-MailFrom: dahi@linux.vnet.ibm.com X-IBM-RcptTo: qemu-devel@nongnu.org Received: from b06cxnps3074.portsmouth.uk.ibm.com (d06relay09.portsmouth.uk.ibm.com [9.149.109.194]) by d06dlp02.portsmouth.uk.ibm.com (Postfix) with ESMTP id DD29E2190061 for ; Mon, 5 Sep 2016 09:52:10 +0100 (BST) Received: from d06av07.portsmouth.uk.ibm.com (d06av07.portsmouth.uk.ibm.com [9.149.37.248]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u858qmf220447470 for ; Mon, 5 Sep 2016 08:52:48 GMT Received: from d06av07.portsmouth.uk.ibm.com (localhost [127.0.0.1]) by d06av07.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u858qmRK031428 for ; Mon, 5 Sep 2016 04:52:48 -0400 Received: from tuxmaker.boeblingen.de.ibm.com (tuxmaker.boeblingen.de.ibm.com [9.152.85.9]) by d06av07.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id u858qlPx031408; Mon, 5 Sep 2016 04:52:48 -0400 From: David Hildenbrand To: qemu-devel@nongnu.org Date: Mon, 5 Sep 2016 10:52:15 +0200 X-Mailer: git-send-email 2.8.4 In-Reply-To: <20160905085244.99980-1-dahi@linux.vnet.ibm.com> References: <20160905085244.99980-1-dahi@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16090508-0020-0000-0000-000001F3E5E5 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16090508-0021-0000-0000-00001D599B80 Message-Id: <20160905085244.99980-2-dahi@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2016-09-05_05:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=1 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1604210000 definitions=main-1609050135 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] X-Received-From: 148.163.156.1 Subject: [Qemu-devel] [Patch v4 01/30] qmp: details about CPU definitions in query-cpu-definitions X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ehabkost@redhat.com, borntraeger@de.ibm.com, fiuczy@linux.vnet.ibm.com, cornelia.huck@de.ibm.com, imammedo@redhat.com, jdenemar@redhat.com, mimu@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP It might be of interest for tooling whether a CPU definition can be safely used when migrating, or if e.g. CPU features might get lost during migration when migrationg from/to a different QEMU version or host, even if the same compatibility machine is used. Also, we want to know if a CPU definition is static and will never change. Beause these definitions can then be used independantly of a compatibility machine and will always have the same feature set, they can e.g. be used to indicate the "host" model in libvirt later on. Let's add two return values to query-cpu-definitions, stating for each returned CPU definition, if it is migration-safe and if it is static. While "migration-safe" is optional, "static" will be set to "false" automatically by all implementing architectures. If a model really was static all the time and will be in the future, this can simply be changed later. Reviewed-by: Eric Blake Signed-off-by: David Hildenbrand --- qapi-schema.json | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/qapi-schema.json b/qapi-schema.json index 5658723..1c3533c 100644 --- a/qapi-schema.json +++ b/qapi-schema.json @@ -3038,10 +3038,22 @@ # # @name: the name of the CPU definition # +# @migration-safe: #optional whether a CPU definition can be safely used for +# migration in combination with a QEMU compatibility machine +# when migrating between different QMU versions and between +# hosts with different sets of (hardware or software) +# capabilities. If not provided, information is not available +# and callers should not assume the CPU definition to be +# migration-safe. (since 2.8) +# +# @static: whether a CPU definition is static and will not change depending on +# QEMU version, machine type, machine options and accelerator options. +# A static model is always migration-safe. (since 2.8) +# # Since: 1.2.0 ## { 'struct': 'CpuDefinitionInfo', - 'data': { 'name': 'str' } } + 'data': { 'name': 'str', '*migration-safe': 'bool', 'static': 'bool' } } ## # @query-cpu-definitions: