From patchwork Mon Mar 9 11:22:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Janosch Frank X-Patchwork-Id: 1251493 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.ibm.com Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 48bbb64g6Yz9sPR for ; Mon, 9 Mar 2020 22:29:06 +1100 (AEDT) Received: from localhost ([::1]:41136 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jBGam-000497-Iw for incoming@patchwork.ozlabs.org; Mon, 09 Mar 2020 07:29:04 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:48076) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jBGUh-0000rt-Hg for qemu-devel@nongnu.org; Mon, 09 Mar 2020 07:22:48 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jBGUg-0004wL-HO for qemu-devel@nongnu.org; Mon, 09 Mar 2020 07:22:47 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:45204 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 1jBGUg-0004os-D0 for qemu-devel@nongnu.org; Mon, 09 Mar 2020 07:22:46 -0400 Received: from pps.filterd (m0098419.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 029BLevb030194 for ; Mon, 9 Mar 2020 07:22:36 -0400 Received: from e06smtp05.uk.ibm.com (e06smtp05.uk.ibm.com [195.75.94.101]) by mx0b-001b2d01.pphosted.com with ESMTP id 2ym5e1xd4u-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Mon, 09 Mar 2020 07:22:35 -0400 Received: from localhost by e06smtp05.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) Mon, 9 Mar 2020 11:22:31 -0000 Received: from d06av22.portsmouth.uk.ibm.com (d06av22.portsmouth.uk.ibm.com [9.149.105.58]) by b06avi18878370.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 029BMUa737749068 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 9 Mar 2020 11:22:30 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 689DD4C04E; Mon, 9 Mar 2020 11:22:30 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A9D5F4C04A; Mon, 9 Mar 2020 11:22:29 +0000 (GMT) Received: from localhost.localdomain (unknown [9.152.224.87]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Mon, 9 Mar 2020 11:22:29 +0000 (GMT) From: Janosch Frank To: qemu-devel@nongnu.org Subject: [PATCH v7 15/15] s390x: Add unpack facility feature to GA1 Date: Mon, 9 Mar 2020 07:22:06 -0400 X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200309112206.20261-1-frankja@linux.ibm.com> References: <20200309112206.20261-1-frankja@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 x-cbid: 20030911-0020-0000-0000-000003B1DFD7 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 20030911-0021-0000-0000-0000220A26B4 Message-Id: <20200309112206.20261-16-frankja@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138, 18.0.572 definitions=2020-03-09_02:2020-03-08, 2020-03-09 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=1 impostorscore=0 priorityscore=1501 adultscore=0 malwarescore=0 phishscore=0 spamscore=0 bulkscore=0 lowpriorityscore=0 mlxscore=0 mlxlogscore=889 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2003090080 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] X-Received-From: 148.163.158.5 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: borntraeger@de.ibm.com, qemu-s390x@nongnu.org, cohuck@redhat.com, david@redhat.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Christian Borntraeger The unpack facility is an indication that diagnose 308 subcodes 8-10 are available to the guest. That means, that the guest can put itself into protected mode. Once it is in protected mode, the hardware stops any attempt of VM introspection by the hypervisor. Some features are currently not supported in protected mode: * Passthrough devices * Migration * Huge page backings Signed-off-by: Christian Borntraeger Reviewed-by: David Hildenbrand --- target/s390x/gen-features.c | 1 + target/s390x/kvm.c | 5 +++++ 2 files changed, 6 insertions(+) diff --git a/target/s390x/gen-features.c b/target/s390x/gen-features.c index 6278845b12..8ddeebc544 100644 --- a/target/s390x/gen-features.c +++ b/target/s390x/gen-features.c @@ -562,6 +562,7 @@ static uint16_t full_GEN15_GA1[] = { S390_FEAT_GROUP_MSA_EXT_9, S390_FEAT_GROUP_MSA_EXT_9_PCKMO, S390_FEAT_ETOKEN, + S390_FEAT_UNPACK, }; /* Default features (in order of release) diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c index 5c7757ac28..ade0752f0c 100644 --- a/target/s390x/kvm.c +++ b/target/s390x/kvm.c @@ -2400,6 +2400,11 @@ void kvm_s390_get_host_cpu_model(S390CPUModel *model, Error **errp) clear_bit(S390_FEAT_BPB, model->features); } + /* we do have the IPL enhancements */ + if (cap_protected) { + set_bit(S390_FEAT_UNPACK, model->features); + } + /* We emulate a zPCI bus and AEN, therefore we don't need HW support */ set_bit(S390_FEAT_ZPCI, model->features); set_bit(S390_FEAT_ADAPTER_EVENT_NOTIFICATION, model->features);