From patchwork Wed Dec 20 10:23:04 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Henrique Barboza X-Patchwork-Id: 851354 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3z1rTk2Z3Nz9s71 for ; Wed, 20 Dec 2017 21:23:53 +1100 (AEDT) Received: from localhost ([::1]:44666 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eRbXS-0007Jl-KA for incoming@patchwork.ozlabs.org; Wed, 20 Dec 2017 05:23:50 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55668) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eRbX5-0007J7-4j for qemu-devel@nongnu.org; Wed, 20 Dec 2017 05:23:28 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eRbX2-0001TF-Bf for qemu-devel@nongnu.org; Wed, 20 Dec 2017 05:23:27 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:58156 helo=mx0a-001b2d01.pphosted.com) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1eRbX2-0001Sb-4p for qemu-devel@nongnu.org; Wed, 20 Dec 2017 05:23:24 -0500 Received: from pps.filterd (m0098414.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id vBKAJo0X001711 for ; Wed, 20 Dec 2017 05:23:22 -0500 Received: from e18.ny.us.ibm.com (e18.ny.us.ibm.com [129.33.205.208]) by mx0b-001b2d01.pphosted.com with ESMTP id 2eyjcc185k-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Wed, 20 Dec 2017 05:23:21 -0500 Received: from localhost by e18.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Wed, 20 Dec 2017 05:23:18 -0500 Received: from b01ledav005.gho.pok.ibm.com (b01ledav005.gho.pok.ibm.com [9.57.199.110]) by b01cxnp22035.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id vBKANIMV49479802; Wed, 20 Dec 2017 10:23:18 GMT Received: from b01ledav005.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9735FAE03C; Wed, 20 Dec 2017 05:24:21 -0500 (EST) Received: from localhost.localdomain (unknown [9.80.235.180]) by b01ledav005.gho.pok.ibm.com (Postfix) with ESMTP id 2365AAE034; Wed, 20 Dec 2017 05:24:19 -0500 (EST) From: Daniel Henrique Barboza To: qemu-devel@nongnu.org Date: Wed, 20 Dec 2017 08:23:04 -0200 X-Mailer: git-send-email 2.13.6 X-TM-AS-GCONF: 00 x-cbid: 17122010-0044-0000-0000-000003C1BF01 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00008232; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000244; SDB=6.00962906; UDB=6.00487089; IPR=6.00742898; BA=6.00005752; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00018638; XFM=3.00000015; UTC=2017-12-20 10:23:20 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17122010-0045-0000-0000-000007F10606 Message-Id: <20171220102304.8288-1-danielhb@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-12-20_05:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1712200152 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.158.5 Subject: [Qemu-devel] [PATCH v1 1/1] qmp: remove qmp_cpu 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: Daniel Henrique Barboza , Markus Armbruster Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" 'qmp_cpu' was implemented in commit 755f196898 ("qapi: Convert the cpu command") as a functional no-op, a QMP call that does nothing and return success. The idea, apparently, was to provide a counterpart for the HMP 'hmp_cpu' command, introduced in the same commit. After 6 years of its creation, qmp_cpu remains a functional no-op that does nothing, having no value for any caller/user. A proposal was sent to implement qmp_cpu like hmp_cpu works, but it was denied [1]. The reason is that QMP must be as stateless as possible and a function that changes its state (the current CPU monitor in the case of qmp_cpu) goes against it. Any QMP command that needs a specific monitor CPU setup must provide it in its arguments, instead of relying in the current QMP monitor state. After discussions that happened in [2] it was decided that a command that does nothing since its birth, no one uses for anything and will not be implemented, should be deprecated and erased. Given that we will *not* provide any replacement for qmp_cpu and we believe that there is no user relying on it, there is no point in adding a deprecation delay for it. So, this patch nukes qmp_cpu from QEMU code, removing both its blank implementation in qmp.c and its doc in qapi-schema.json. [1] https://lists.gnu.org/archive/html/qemu-devel/2017-12/msg02283.html [2] https://lists.gnu.org/archive/html/qemu-devel/2017-12/msg03696.html Signed-off-by: Daniel Henrique Barboza CC: Markus Armbruster CC: Eric Blake CC: Daniel P. Berrange Reviewed-by: Daniel P. Berrange Reviewed-by: Eric Blake --- qapi-schema.json | 11 ----------- qmp.c | 5 ----- 2 files changed, 16 deletions(-) diff --git a/qapi-schema.json b/qapi-schema.json index 18457954a8..5c29bcd27f 100644 --- a/qapi-schema.json +++ b/qapi-schema.json @@ -1046,17 +1046,6 @@ { 'command': 'system_powerdown' } ## -# @cpu: -# -# This command is a nop that is only provided for the purposes of compatibility. -# -# Since: 0.14.0 -# -# Notes: Do not use this command. -## -{ 'command': 'cpu', 'data': {'index': 'int'} } - -## # @cpu-add: # # Adds CPU with specified ID diff --git a/qmp.c b/qmp.c index e8c303116a..52cfd2d81c 100644 --- a/qmp.c +++ b/qmp.c @@ -113,11 +113,6 @@ void qmp_system_powerdown(Error **erp) qemu_system_powerdown_request(); } -void qmp_cpu(int64_t index, Error **errp) -{ - /* Just do nothing */ -} - void qmp_cpu_add(int64_t id, Error **errp) { MachineClass *mc;