From patchwork Mon Aug 29 11:45:02 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cornelia Huck X-Patchwork-Id: 9303685 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 4A2CB6086B for ; Mon, 29 Aug 2016 11:46:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3B72B285E2 for ; Mon, 29 Aug 2016 11:46:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 30029287B6; Mon, 29 Aug 2016 11:46:34 +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 C87852878B for ; Mon, 29 Aug 2016 11:46:33 +0000 (UTC) Received: from localhost ([::1]:42862 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1beL1M-0006Cr-Pi for patchwork-qemu-devel@patchwork.kernel.org; Mon, 29 Aug 2016 07:46:32 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45342) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1beL0e-0006BA-NE for qemu-devel@nongnu.org; Mon, 29 Aug 2016 07:45:53 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1beL0V-0001ML-QB for qemu-devel@nongnu.org; Mon, 29 Aug 2016 07:45:47 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:36978 helo=mx0a-001b2d01.pphosted.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1beL0V-0001Lw-GN for qemu-devel@nongnu.org; Mon, 29 Aug 2016 07:45:39 -0400 Received: from pps.filterd (m0098419.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.11/8.16.0.11) with SMTP id u7TBhu5U111935 for ; Mon, 29 Aug 2016 07:45:39 -0400 Received: from e06smtp13.uk.ibm.com (e06smtp13.uk.ibm.com [195.75.94.109]) by mx0b-001b2d01.pphosted.com with ESMTP id 253r0ajbn5-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Mon, 29 Aug 2016 07:45:38 -0400 Received: from localhost by e06smtp13.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Mon, 29 Aug 2016 12:45:36 +0100 X-IBM-Helo: d06dlp01.portsmouth.uk.ibm.com X-IBM-MailFrom: cornelia.huck@de.ibm.com X-IBM-RcptTo: qemu-devel@nongnu.org Received: from b06cxnps4076.portsmouth.uk.ibm.com (d06relay13.portsmouth.uk.ibm.com [9.149.109.198]) by d06dlp01.portsmouth.uk.ibm.com (Postfix) with ESMTP id C1E7117D8042 for ; Mon, 29 Aug 2016 12:47:23 +0100 (BST) Received: from d06av05.portsmouth.uk.ibm.com (d06av05.portsmouth.uk.ibm.com [9.149.37.229]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u7TBjZ7E5243192 for ; Mon, 29 Aug 2016 11:45:35 GMT Received: from d06av05.portsmouth.uk.ibm.com (localhost [127.0.0.1]) by d06av05.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u7TBjZw8009442 for ; Mon, 29 Aug 2016 05:45:35 -0600 Received: from gondolin.boeblingen.de.ibm.com (dyn-9-152-224-137.boeblingen.de.ibm.com [9.152.224.137]) by d06av05.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id u7TBjW4S009268 (version=TLSv1/SSLv3 cipher=AES256-SHA256 bits=256 verify=NO); Mon, 29 Aug 2016 05:45:34 -0600 From: Cornelia Huck To: qemu-devel@nongnu.org Date: Mon, 29 Aug 2016 13:45:02 +0200 X-Mailer: git-send-email 2.9.3 In-Reply-To: <20160829114530.10842-1-cornelia.huck@de.ibm.com> References: <20160829114530.10842-1-cornelia.huck@de.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16082911-0012-0000-0000-0000044CD0EC X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16082911-0013-0000-0000-0000152E6FCE Message-Id: <20160829114530.10842-11-cornelia.huck@de.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2016-08-29_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-1608290119 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] X-Received-From: 148.163.158.5 Subject: [Qemu-devel] [PATCH for-2.8 10/38] 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: Cornelia Huck , borntraeger@de.ibm.com, jfrei@linux.vnet.ibm.com, agraf@suse.de, David Hildenbrand Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: David Hildenbrand 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. Signed-off-by: David Hildenbrand Message-Id: <20160829101358.14564-1-dahi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck --- 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: