From patchwork Mon May 29 13:55:15 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Halil Pasic X-Patchwork-Id: 9753247 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 C4B64602B1 for ; Mon, 29 May 2017 13:56:48 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BC82C26BE9 for ; Mon, 29 May 2017 13:56:48 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B155326E49; Mon, 29 May 2017 13:56:48 +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 5293626BE9 for ; Mon, 29 May 2017 13:56:48 +0000 (UTC) Received: from localhost ([::1]:48895 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dFLA7-000888-GX for patchwork-qemu-devel@patchwork.kernel.org; Mon, 29 May 2017 09:56:47 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:33634) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dFL8z-00087w-3w for qemu-devel@nongnu.org; Mon, 29 May 2017 09:55:38 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dFL8v-0005Bg-8o for qemu-devel@nongnu.org; Mon, 29 May 2017 09:55:37 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:57808 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 1dFL8v-0005BX-2h for qemu-devel@nongnu.org; Mon, 29 May 2017 09:55:33 -0400 Received: from pps.filterd (m0098417.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.20/8.16.0.20) with SMTP id v4TDrUP9012237 for ; Mon, 29 May 2017 09:55:32 -0400 Received: from e06smtp13.uk.ibm.com (e06smtp13.uk.ibm.com [195.75.94.109]) by mx0a-001b2d01.pphosted.com with ESMTP id 2arha4gt24-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Mon, 29 May 2017 09:55:31 -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 May 2017 14:55:28 +0100 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id v4TDtRrD33030150; Mon, 29 May 2017 13:55:27 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D53F852041; Mon, 29 May 2017 13:52:26 +0100 (BST) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTPS id AC70B5204B; Mon, 29 May 2017 13:52:26 +0100 (BST) From: Halil Pasic To: Cornelia Huck , "Dr. David Alan Gilbert" Date: Mon, 29 May 2017 15:55:15 +0200 X-Mailer: git-send-email 2.11.2 In-Reply-To: <20170529135520.101429-1-pasic@linux.vnet.ibm.com> References: <20170529135520.101429-1-pasic@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 17052913-0012-0000-0000-0000053C862A X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17052913-0013-0000-0000-000018A4D17C Message-Id: <20170529135520.101429-3-pasic@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-05-29_10:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1703280000 definitions=main-1705290259 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 v2 2/7] s390x: add helper get_machine_class 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: Dong Jia Shi , Halil Pasic , qemu-devel@nongnu.org, Juan Quintela Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP We will need the machine class at machine initialization time, so the usual way via qdev won't do. Let's cache the machine class and also use the default values of the base machine for capability discovery. Signed-off-by: Halil Pasic Acked-by: Cornelia Huck --- hw/s390x/s390-virtio-ccw.c | 46 +++++++++++++++++++++++----------------------- 1 file changed, 23 insertions(+), 23 deletions(-) diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c index fdd4384ff0..04148916ed 100644 --- a/hw/s390x/s390-virtio-ccw.c +++ b/hw/s390x/s390-virtio-ccw.c @@ -242,36 +242,35 @@ static inline void machine_set_dea_key_wrap(Object *obj, bool value, ms->dea_key_wrap = value; } -bool ri_allowed(void) -{ - if (kvm_enabled()) { - MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine()); - if (object_class_dynamic_cast(OBJECT_CLASS(mc), - TYPE_S390_CCW_MACHINE)) { - S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc); +static S390CcwMachineClass *current_mc; - return s390mc->ri_allowed; - } +static S390CcwMachineClass *get_machine_class(void) +{ + if (unlikely(!current_mc)) { /* - * Make sure the "none" machine can have ri, otherwise it won't * be - * unlocked in KVM and therefore the host CPU model might be wrong. - */ - return true; + * No s390 ccw machine was instantiated, we are likely to + * be called for the 'none' machine. The properties will + * have their after-initialization values. + */ + current_mc = S390_MACHINE_CLASS( + object_class_by_name(TYPE_S390_CCW_MACHINE)); } - return 0; + return current_mc; } -bool cpu_model_allowed(void) +bool ri_allowed(void) { - MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine()); - if (object_class_dynamic_cast(OBJECT_CLASS(mc), - TYPE_S390_CCW_MACHINE)) { - S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc); - - return s390mc->cpu_model_allowed; + if (!kvm_enabled()) { + return false; } - /* allow CPU model qmp queries with the "none" machine */ - return true; + /* for "none" machine this results in true */ + return get_machine_class()->ri_allowed; +} + +bool cpu_model_allowed(void) +{ + /* for "none" machine this results in true */ + return get_machine_class()->cpu_model_allowed; } static char *machine_get_loadparm(Object *obj, Error **errp) @@ -360,6 +359,7 @@ static const TypeInfo ccw_machine_info = { static void ccw_machine_##suffix##_instance_init(Object *obj) \ { \ MachineState *machine = MACHINE(obj); \ + current_mc = S390_MACHINE_CLASS(MACHINE_GET_CLASS(machine)); \ ccw_machine_##suffix##_instance_options(machine); \ } \ static const TypeInfo ccw_machine_##suffix##_info = { \