From nobody Fri Nov 14 00:48:05 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=linux.ibm.com ARC-Seal: i=1; a=rsa-sha256; t=1583847869; cv=none; d=zohomail.com; s=zohoarc; b=g566mEGgitCXj7R4nhY+gdrkGmNFyCVnu9CKOaZQXFZW/ri/t9sv2e186FGA0ltUS1kKlM9B7kFbA75+5ln439lvxvrISsupg09n+C5PBL5HYyzjFQE4RX063stXgTtgCKnpBT8pCCsF+Auj9fpUnLyxhxWdF748+tu+XljA9L8= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1583847869; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=nSKFNgZusw/UVa2vA4i1BINW8EvacJ0Ramkdik4W7l0=; b=R6j5irDXZRp9t5S4+8/wbth+kz0eZCHvWblwFBVIDFuTCDBYaKeO008iVYtt0tjsrwsOylGaTS8mL6Ub9HkBgUZBvNP0FR2sTTn2u8Bt1/FgvIIznQe+gsBlE9QzIFDEZxnRH8ot8HX7+Qt5fye56qWfFxmSBpoDwYs2uW0xJEA= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1583847869453589.4115874810756; Tue, 10 Mar 2020 06:44:29 -0700 (PDT) Received: from localhost ([::1]:33334 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jBfBM-0005HN-Dp for importer@patchew.org; Tue, 10 Mar 2020 09:44:28 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42433) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jBf9Q-0002Sb-4G for qemu-devel@nongnu.org; Tue, 10 Mar 2020 09:42:29 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jBf9O-0007lX-8P for qemu-devel@nongnu.org; Tue, 10 Mar 2020 09:42:27 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:37600 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 1jBf9N-0007jO-Vo for qemu-devel@nongnu.org; Tue, 10 Mar 2020 09:42:26 -0400 Received: from pps.filterd (m0098416.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 02ADgJZv074555 for ; Tue, 10 Mar 2020 09:42:25 -0400 Received: from e06smtp01.uk.ibm.com (e06smtp01.uk.ibm.com [195.75.94.97]) by mx0b-001b2d01.pphosted.com with ESMTP id 2ym649xmne-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Tue, 10 Mar 2020 09:42:25 -0400 Received: from localhost by e06smtp01.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 10 Mar 2020 13:42:23 -0000 Received: from b06cxnps3075.portsmouth.uk.ibm.com (9.149.109.195) by e06smtp01.uk.ibm.com (192.168.101.131) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Tue, 10 Mar 2020 13:42:22 -0000 Received: from d06av25.portsmouth.uk.ibm.com (d06av25.portsmouth.uk.ibm.com [9.149.105.61]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 02ADgL6b56557702 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 10 Mar 2020 13:42:21 GMT Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 5318A11C04C; Tue, 10 Mar 2020 13:42:21 +0000 (GMT) Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 27A9E11C04A; Tue, 10 Mar 2020 13:42:20 +0000 (GMT) Received: from localhost.localdomain (unknown [9.145.23.214]) by d06av25.portsmouth.uk.ibm.com (Postfix) with ESMTP; Tue, 10 Mar 2020 13:42:19 +0000 (GMT) From: Janosch Frank To: qemu-devel@nongnu.org Subject: [PATCH v8 15/15] s390x: Add unpack facility feature to GA1 Date: Tue, 10 Mar 2020 09:40:08 -0400 X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200310134008.130038-1-frankja@linux.ibm.com> References: <20200310134008.130038-1-frankja@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 x-cbid: 20031013-4275-0000-0000-000003AA3A7E X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 20031013-4276-0000-0000-000038BF53DE Message-Id: <20200310134008.130038-16-frankja@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138, 18.0.572 definitions=2020-03-10_07:2020-03-10, 2020-03-10 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 priorityscore=1501 mlxscore=0 suspectscore=1 bulkscore=0 spamscore=0 clxscore=1015 phishscore=0 malwarescore=0 impostorscore=0 mlxlogscore=890 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2003100091 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" 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[] =3D { S390_FEAT_GROUP_MSA_EXT_9, S390_FEAT_GROUP_MSA_EXT_9_PCKMO, S390_FEAT_ETOKEN, + S390_FEAT_UNPACK, }; =20 /* Default features (in order of release) diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c index e92e0d5943..8731547158 100644 --- a/target/s390x/kvm.c +++ b/target/s390x/kvm.c @@ -2402,6 +2402,11 @@ void kvm_s390_get_host_cpu_model(S390CPUModel *model= , Error **errp) clear_bit(S390_FEAT_BPB, model->features); } =20 + /* 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); --=20 2.20.1