From patchwork Mon Aug 13 21:48:16 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tony Krowiak X-Patchwork-Id: 10564863 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 1F62F13B4 for ; Mon, 13 Aug 2018 21:49:17 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1211329328 for ; Mon, 13 Aug 2018 21:49:17 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 056A129356; Mon, 13 Aug 2018 21:49:17 +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 A061A29328 for ; Mon, 13 Aug 2018 21:49:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731673AbeHNAdR (ORCPT ); Mon, 13 Aug 2018 20:33:17 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:48656 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1731610AbeHNAdQ (ORCPT ); Mon, 13 Aug 2018 20:33:16 -0400 Received: from pps.filterd (m0098416.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w7DLn65I047863 for ; Mon, 13 Aug 2018 17:49:12 -0400 Received: from e12.ny.us.ibm.com (e12.ny.us.ibm.com [129.33.205.202]) by mx0b-001b2d01.pphosted.com with ESMTP id 2kugs5k0j4-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Mon, 13 Aug 2018 17:49:12 -0400 Received: from localhost by e12.ny.us.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) Mon, 13 Aug 2018 17:49:07 -0400 Received: from b01ledav002.gho.pok.ibm.com (b01ledav002.gho.pok.ibm.com [9.57.199.107]) by b01cxnp23033.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w7DLn5PM14418178 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 13 Aug 2018 21:49:05 GMT Received: from b01ledav002.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0DC98124052; Mon, 13 Aug 2018 18:50:04 -0400 (EDT) Received: from b01ledav002.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id E332D124055; Mon, 13 Aug 2018 18:50:02 -0400 (EDT) Received: from localhost.localdomain (unknown [9.85.141.105]) by b01ledav002.gho.pok.ibm.com (Postfix) with ESMTPS; Mon, 13 Aug 2018 18:50:02 -0400 (EDT) From: Tony Krowiak To: linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: freude@de.ibm.com, schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com, borntraeger@de.ibm.com, cohuck@redhat.com, kwankhede@nvidia.com, bjsdjshi@linux.vnet.ibm.com, pbonzini@redhat.com, alex.williamson@redhat.com, pmorel@linux.vnet.ibm.com, alifm@linux.vnet.ibm.com, mjrosato@linux.vnet.ibm.com, jjherne@linux.vnet.ibm.com, thuth@redhat.com, pasic@linux.vnet.ibm.com, berrange@redhat.com, fiuczy@linux.vnet.ibm.com, buendgen@de.ibm.com, akrowiak@linux.vnet.ibm.com, frankja@linux.ibm.com, Pierre Morel , Tony Krowiak Subject: [PATCH v9 19/22] KVM: s390: Clear Crypto Control Block when using vSIE Date: Mon, 13 Aug 2018 17:48:16 -0400 X-Mailer: git-send-email 1.7.1 In-Reply-To: <1534196899-16987-1-git-send-email-akrowiak@linux.vnet.ibm.com> References: <1534196899-16987-1-git-send-email-akrowiak@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18081321-0060-0000-0000-0000029D5F13 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00009538; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000266; SDB=6.01073087; UDB=6.00552883; IPR=6.00853043; MB=3.00022698; MTD=3.00000008; XFM=3.00000015; UTC=2018-08-13 21:49:10 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18081321-0061-0000-0000-000046282BB4 Message-Id: <1534196899-16987-20-git-send-email-akrowiak@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-08-13_10:,, 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=745 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1808130219 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Pierre Morel When we clear the Crypto Control Block (CRYCB) used by a guest level 2, the vSIE shadow CRYCB for guest level 3 must be updated before the guest uses it. We achieve this by using the KVM_REQ_VSIE_RESTART synchronous request for each vCPU belonging to the guest to force the reload of the shadow CRYCB before rerunning the guest level 3. Signed-off-by: Pierre Morel Signed-off-by: Tony Krowiak --- arch/s390/kvm/kvm-s390.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 8d8a65a..1e8cb67 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -1929,6 +1929,8 @@ void kvm_arch_crypto_clear_masks(struct kvm *kvm) memset(&kvm->arch.crypto.crycb->apcb1, 0, sizeof(kvm->arch.crypto.crycb->apcb1)); + /* recreate the shadow crycb for each vcpu */ + kvm_s390_sync_request_broadcast(kvm, KVM_REQ_VSIE_RESTART); kvm_s390_vcpu_unblock_all(kvm); mutex_unlock(&kvm->lock); }