From nobody Sat Oct 25 21:42:28 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1521156596156493.01531110910446; Thu, 15 Mar 2018 16:29:56 -0700 (PDT) Received: from localhost ([::1]:53809 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ewcJn-0004KO-BN for importer@patchew.org; Thu, 15 Mar 2018 19:29:55 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48688) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ewcGc-0002DG-Qw for qemu-devel@nongnu.org; Thu, 15 Mar 2018 19:26:39 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ewcGY-0000qY-Rl for qemu-devel@nongnu.org; Thu, 15 Mar 2018 19:26:38 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:43452) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ewcGY-0000lq-Jv for qemu-devel@nongnu.org; Thu, 15 Mar 2018 19:26:34 -0400 Received: from pps.filterd (m0098409.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w2FNLt5Q060338 for ; Thu, 15 Mar 2018 19:26:18 -0400 Received: from e35.co.us.ibm.com (e35.co.us.ibm.com [32.97.110.153] (may be forged)) by mx0a-001b2d01.pphosted.com with ESMTP id 2gr05pvwvs-1 (version=TLSv1.2 cipher=AES256-SHA256 bits=256 verify=NOT) for ; Thu, 15 Mar 2018 19:26:17 -0400 Received: from localhost by e35.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Thu, 15 Mar 2018 17:25:20 -0600 Received: from b03ledav002.gho.boulder.ibm.com (b03ledav002.gho.boulder.ibm.com [9.17.130.233]) by b03cxnp07028.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w2FNPJ5s14745906; Thu, 15 Mar 2018 16:25:19 -0700 Received: from b03ledav002.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4DC3313603A; Thu, 15 Mar 2018 17:25:19 -0600 (MDT) Received: from localhost.localdomain (unknown [9.80.217.151]) by b03ledav002.gho.boulder.ibm.com (Postfix) with ESMTPS id 0987F136049; Thu, 15 Mar 2018 17:25:16 -0600 (MDT) From: Tony Krowiak To: qemu-devel@nongnu.org Date: Thu, 15 Mar 2018 19:24:57 -0400 X-Mailer: git-send-email 1.7.1 In-Reply-To: <1521156300-19296-1-git-send-email-akrowiak@linux.vnet.ibm.com> References: <1521156300-19296-1-git-send-email-akrowiak@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18031523-0012-0000-0000-000015E7DC2B X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00008681; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000254; SDB=6.01003605; UDB=6.00510771; IPR=6.00782931; MB=3.00020058; MTD=3.00000008; XFM=3.00000015; UTC=2018-03-15 23:25:24 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18031523-0013-0000-0000-000051E32B01 Message-Id: <1521156300-19296-5-git-send-email-akrowiak@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2018-03-15_11:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1803150253 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.156.1 Subject: [Qemu-devel] [PATCH v3 4/7] s390x/kvm: interface to interpret AP instructions X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mjrosato@linux.vnet.ibm.com, peter.maydell@linaro.org, pasic@linux.vnet.ibm.com, alifm@linux.vnet.ibm.com, eskultet@redhat.com, david@redhat.com, pmorel@linux.vnet.ibm.com, cohuck@redhat.com, heiko.carstens@de.ibm.com, alex.williamson@redhat.com, agraf@suse.de, borntraeger@de.ibm.com, qemu-s390x@nongnu.org, akrowiak@linux.vnet.ibm.com, jjherne@linux.vnet.ibm.com, schwidefsky@de.ibm.com, pbonzini@redhat.com, bjsdjshi@linux.vnet.ibm.com, eric.auger@redhat.com, rth@twiddle.net Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" The VFIO AP device exploits interpretive execution of AP instructions (APIE). APIE is enabled by setting a device attribute via the KVM_SET_DEVICE_ATTR ioctl. Signed-off-by: Tony Krowiak --- target/s390x/kvm.c | 16 ++++++++++++++++ target/s390x/kvm_s390x.h | 2 ++ 2 files changed, 18 insertions(+), 0 deletions(-) diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c index 33e5ec3..2812e28 100644 --- a/target/s390x/kvm.c +++ b/target/s390x/kvm.c @@ -277,6 +277,22 @@ static void kvm_s390_init_dea_kw(void) } } =20 +int kvm_s390_set_interpret_ap(uint8_t enable) +{ + struct kvm_device_attr attribute =3D { + .group =3D KVM_S390_VM_CRYPTO, + .attr =3D KVM_S390_VM_CRYPTO_INTERPRET_AP, + .addr =3D 1, + }; + + if (!kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, + KVM_S390_VM_CRYPTO_INTERPRET_AP)) { + return -EOPNOTSUPP; + } + + return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attribute); +} + void kvm_s390_crypto_reset(void) { if (s390_has_feat(S390_FEAT_MSA_EXT_3)) { diff --git a/target/s390x/kvm_s390x.h b/target/s390x/kvm_s390x.h index 34ee7e7..0d6c6e7 100644 --- a/target/s390x/kvm_s390x.h +++ b/target/s390x/kvm_s390x.h @@ -40,4 +40,6 @@ void kvm_s390_crypto_reset(void); void kvm_s390_restart_interrupt(S390CPU *cpu); void kvm_s390_stop_interrupt(S390CPU *cpu); =20 +int kvm_s390_set_interpret_ap(uint8_t enable); + #endif /* KVM_S390X_H */ --=20 1.7.1