From patchwork Fri Dec 18 14:18:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claudio Imbrenda X-Patchwork-Id: 11982067 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A3345C4361B for ; Fri, 18 Dec 2020 14:19:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7C0F923AAA for ; Fri, 18 Dec 2020 14:19:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727102AbgLROS7 (ORCPT ); Fri, 18 Dec 2020 09:18:59 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:55166 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725908AbgLROS6 (ORCPT ); Fri, 18 Dec 2020 09:18:58 -0500 Received: from pps.filterd (m0098399.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0BIEDEnT040950; Fri, 18 Dec 2020 09:18:18 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : mime-version : content-transfer-encoding; s=pp1; bh=Hb2vIskaEuEzm8cbxDywKvyMNWrHp7cUGkREIFvkH3I=; b=RQmf/u2MgmVv/pU1R2MqfPcromLVjaxvE4kE9Z7+pbbfR4nJAW3PEZJOAe4fjpUx7BmN 5v8BzOr6pUrSUUBS3HFPqimHIbwqeBQY0DeiHNUaSlrqb65WQ3eYfycuqK3xYLLq5Ziq +ga0kuAN4ohOKMad0WZ/QboS7FEs/Kw62eLbWx2oYmMMKQoRTQegIyJLm/Bx8GkZVeu3 /TQlFwppwW0DxkPeYOeQ+ZD1V06RN8UwXviEC8dNwzKQoumfnbBExeu0QSa5xFustnR2 FcoXKzA9Pn0tiYgW1PAeh+WzTpHmTmB2BvPwl6VwwhEJBDBPCyufB1kheLFsX5MjOWYD 5g== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 35gx0cg55q-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 18 Dec 2020 09:18:18 -0500 Received: from m0098399.ppops.net (m0098399.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.36/8.16.0.36) with SMTP id 0BIEDTSv041680; Fri, 18 Dec 2020 09:18:17 -0500 Received: from ppma04fra.de.ibm.com (6a.4a.5195.ip4.static.sl-reverse.com [149.81.74.106]) by mx0a-001b2d01.pphosted.com with ESMTP id 35gx0cg54x-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 18 Dec 2020 09:18:17 -0500 Received: from pps.filterd (ppma04fra.de.ibm.com [127.0.0.1]) by ppma04fra.de.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 0BIEGeoM015047; Fri, 18 Dec 2020 14:18:15 GMT Received: from b06cxnps3074.portsmouth.uk.ibm.com (d06relay09.portsmouth.uk.ibm.com [9.149.109.194]) by ppma04fra.de.ibm.com with ESMTP id 35cng8bbw3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 18 Dec 2020 14:18:15 +0000 Received: from b06wcsmtp001.portsmouth.uk.ibm.com (b06wcsmtp001.portsmouth.uk.ibm.com [9.149.105.160]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 0BIEICh842467650 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 18 Dec 2020 14:18:12 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 34A24A4060; Fri, 18 Dec 2020 14:18:12 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id CF5D7A405B; Fri, 18 Dec 2020 14:18:11 +0000 (GMT) Received: from ibm-vm.ibmuc.com (unknown [9.145.12.102]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 18 Dec 2020 14:18:11 +0000 (GMT) From: Claudio Imbrenda To: linux-kernel@vger.kernel.org Cc: borntraeger@de.ibm.com, frankja@linux.ibm.com, david@redhat.com, kvm@vger.kernel.org, linux-s390@vger.kernel.org Subject: [PATCH v1 0/4] s390/kvm: fix MVPG when in VSIE Date: Fri, 18 Dec 2020 15:18:07 +0100 Message-Id: <20201218141811.310267-1-imbrenda@linux.ibm.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.343,18.0.737 definitions=2020-12-18_09:2020-12-18,2020-12-18 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 adultscore=0 clxscore=1015 suspectscore=0 mlxlogscore=790 spamscore=0 impostorscore=0 mlxscore=0 priorityscore=1501 lowpriorityscore=0 phishscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2012180095 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org The current handling of the MVPG instruction when executed in a nested guest is wrong, and can lead to the nested guest hanging. This patchset fixes the behaviour to be more architecturally correct, and fixes the hangs observed. Claudio Imbrenda (4): s390/kvm: VSIE: stop leaking host addresses s390/kvm: extend guest_translate for MVPG interpretation s390/kvm: add kvm_s390_vsie_mvpg_check needed for VSIE MVPG s390/kvm: VSIE: correctly handle MVPG when in VSIE arch/s390/kvm/gaccess.c | 88 ++++++++++++++++++++++++++++++++++++++--- arch/s390/kvm/gaccess.h | 3 ++ arch/s390/kvm/vsie.c | 78 +++++++++++++++++++++++++++++++++--- 3 files changed, 159 insertions(+), 10 deletions(-)