From patchwork Wed Nov 28 10:19:35 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Mueller X-Patchwork-Id: 10702265 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 921EB13A4 for ; Wed, 28 Nov 2018 10:20:18 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 846292CF81 for ; Wed, 28 Nov 2018 10:20:18 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7866E2CFA1; Wed, 28 Nov 2018 10:20:18 +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=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5EC1D2CF85 for ; Wed, 28 Nov 2018 10:20:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728540AbeK1VVY (ORCPT ); Wed, 28 Nov 2018 16:21:24 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:40188 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728349AbeK1VVX (ORCPT ); Wed, 28 Nov 2018 16:21:23 -0500 Received: from pps.filterd (m0098394.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id wASAJijM117031 for ; Wed, 28 Nov 2018 05:20:14 -0500 Received: from e06smtp01.uk.ibm.com (e06smtp01.uk.ibm.com [195.75.94.97]) by mx0a-001b2d01.pphosted.com with ESMTP id 2p1nvxfpfg-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Wed, 28 Nov 2018 05:20:13 -0500 Received: from localhost by e06smtp01.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Wed, 28 Nov 2018 10:20:09 -0000 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id wASAK8rU53936328 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 28 Nov 2018 10:20:08 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1425A52050; Wed, 28 Nov 2018 10:20:08 +0000 (GMT) Received: from s38lp84.lnxne.boe (unknown [9.152.108.100]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTP id BB4EF52057; Wed, 28 Nov 2018 10:20:07 +0000 (GMT) From: Michael Mueller To: KVM Mailing List , Linux-S390 Mailing List Cc: Martin Schwidefsky , Heiko Carstens , Christian Borntraeger , Janosch Frank , David Hildenbrand , Cornelia Huck , Halil Pasic , Pierre Morel , Michael Mueller Subject: [PATCH v3 04/12] KVM: s390: factor out nullify_gisa() Date: Wed, 28 Nov 2018 11:19:35 +0100 X-Mailer: git-send-email 2.13.4 In-Reply-To: <20181128101943.155542-1-mimu@linux.ibm.com> References: <20181128101943.155542-1-mimu@linux.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18112810-4275-0000-0000-000002E7EAD4 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18112810-4276-0000-0000-000037F52A89 Message-Id: <20181128101943.155542-5-mimu@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-11-28_07:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=845 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1811280093 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This function will be used by the GIB alert handler and during the GISA clear operation. Thus it gets factored out here. Signed-off-by: Michael Mueller Reviewed-by: Pierre Morel Reviewed-by: Janosch Frank Reviewed-by: Cornelia Huck Reviewed-by: David Hildenbrand --- arch/s390/kvm/interrupt.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c index 5d20a0ce8a30..97e5da9a0814 100644 --- a/arch/s390/kvm/interrupt.c +++ b/arch/s390/kvm/interrupt.c @@ -2886,11 +2886,16 @@ int kvm_s390_get_irq_state(struct kvm_vcpu *vcpu, __u8 __user *buf, int len) return n; } +static void nullify_gisa(struct kvm_s390_gisa *gisa) +{ + memset(gisa, 0, sizeof(struct kvm_s390_gisa)); + gisa->next_alert = (u32)(u64)gisa; +} + void kvm_s390_gisa_clear(struct kvm *kvm) { if (kvm->arch.gisa) { - memset(kvm->arch.gisa, 0, sizeof(struct kvm_s390_gisa)); - kvm->arch.gisa->next_alert = (u32)(u64)kvm->arch.gisa; + nullify_gisa(kvm->arch.gisa); VM_EVENT(kvm, 3, "gisa 0x%pK cleared", kvm->arch.gisa); } }