From patchwork Fri Feb 14 15:16:30 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Janosch Frank X-Patchwork-Id: 1238117 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 48Jxvl58SSz9sNg for ; Sat, 15 Feb 2020 02:22:43 +1100 (AEDT) Received: from localhost ([::1]:40220 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j2cnh-0000ai-Js for incoming@patchwork.ozlabs.org; Fri, 14 Feb 2020 10:22:41 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:46652) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j2cia-00077Q-AX for qemu-devel@nongnu.org; Fri, 14 Feb 2020 10:17:25 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1j2ciZ-0006Di-4T for qemu-devel@nongnu.org; Fri, 14 Feb 2020 10:17:24 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:41482) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1j2ciY-0006DJ-Sv for qemu-devel@nongnu.org; Fri, 14 Feb 2020 10:17:23 -0500 Received: from pps.filterd (m0098394.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 01EFGTlE063200 for ; Fri, 14 Feb 2020 10:17:22 -0500 Received: from e06smtp01.uk.ibm.com (e06smtp01.uk.ibm.com [195.75.94.97]) by mx0a-001b2d01.pphosted.com with ESMTP id 2y4qyuaad2-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Fri, 14 Feb 2020 10:17:20 -0500 Received: from localhost by e06smtp01.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) Fri, 14 Feb 2020 15:17:12 -0000 Received: from d06av23.portsmouth.uk.ibm.com (d06av23.portsmouth.uk.ibm.com [9.149.105.59]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 01EFHCr82032088 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 14 Feb 2020 15:17:12 GMT Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id E3A08A404D; Fri, 14 Feb 2020 15:17:11 +0000 (GMT) Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 90248A4059; Fri, 14 Feb 2020 15:17:10 +0000 (GMT) Received: from localhost.localdomain (unknown [9.145.191.187]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 14 Feb 2020 15:17:10 +0000 (GMT) From: Janosch Frank To: qemu-devel@nongnu.org Subject: [PATCH v3 11/17] s390x: protvirt: SCLP interpretation Date: Fri, 14 Feb 2020 10:16:30 -0500 X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200214151636.8764-1-frankja@linux.ibm.com> References: <20200214151636.8764-1-frankja@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 x-cbid: 20021415-4275-0000-0000-000003A17B65 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 20021415-4276-0000-0000-000038B57FD4 Message-Id: <20200214151636.8764-12-frankja@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138, 18.0.572 definitions=2020-02-14_04:2020-02-12, 2020-02-14 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 phishscore=0 priorityscore=1501 suspectscore=1 mlxlogscore=745 lowpriorityscore=0 impostorscore=0 spamscore=0 bulkscore=0 adultscore=0 mlxscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2002140121 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] X-Received-From: 148.163.156.1 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: mihajlov@linux.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" SCLP for a protected guest is done over the SIDAD, so we need to use the s390_cpu_virt_mem_* functions to access the SIDAD instead of guest memory when reading/writing SCBs. To not confuse the sclp emulation, we set 0x4000 as the SCCB address, since the function that injects the sclp external interrupt would reject a zero sccb address. Signed-off-by: Janosch Frank --- hw/s390x/sclp.c | 17 +++++++++++++++++ include/hw/s390x/sclp.h | 2 ++ target/s390x/kvm.c | 5 +++++ 3 files changed, 24 insertions(+) diff --git a/hw/s390x/sclp.c b/hw/s390x/sclp.c index af0bfbc2ec..5136f5fcbe 100644 --- a/hw/s390x/sclp.c +++ b/hw/s390x/sclp.c @@ -193,6 +193,23 @@ static void sclp_execute(SCLPDevice *sclp, SCCB *sccb, uint32_t code) } } +#define SCLP_PV_DUMMY_ADDR 0x4000 +int sclp_service_call_protected(CPUS390XState *env, uint64_t sccb, + uint32_t code) +{ + SCLPDevice *sclp = get_sclp_device(); + SCLPDeviceClass *sclp_c = SCLP_GET_CLASS(sclp); + SCCB work_sccb; + hwaddr sccb_len = sizeof(SCCB); + + s390_cpu_pv_mem_read(env_archcpu(env), 0, &work_sccb, sccb_len); + sclp_c->execute(sclp, &work_sccb, code); + s390_cpu_pv_mem_write(env_archcpu(env), 0, &work_sccb, + be16_to_cpu(work_sccb.h.length)); + sclp_c->service_interrupt(sclp, SCLP_PV_DUMMY_ADDR); + return 0; +} + int sclp_service_call(CPUS390XState *env, uint64_t sccb, uint32_t code) { SCLPDevice *sclp = get_sclp_device(); diff --git a/include/hw/s390x/sclp.h b/include/hw/s390x/sclp.h index c54413b78c..c0a3faa37d 100644 --- a/include/hw/s390x/sclp.h +++ b/include/hw/s390x/sclp.h @@ -217,5 +217,7 @@ void s390_sclp_init(void); void sclp_service_interrupt(uint32_t sccb); void raise_irq_cpu_hotplug(void); int sclp_service_call(CPUS390XState *env, uint64_t sccb, uint32_t code); +int sclp_service_call_protected(CPUS390XState *env, uint64_t sccb, + uint32_t code); #endif diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c index e4f8242be7..29bcdf839f 100644 --- a/target/s390x/kvm.c +++ b/target/s390x/kvm.c @@ -1224,6 +1224,11 @@ static void kvm_sclp_service_call(S390CPU *cpu, struct kvm_run *run, sccb = env->regs[ipbh0 & 0xf]; code = env->regs[(ipbh0 & 0xf0) >> 4]; + if (run->s390_sieic.icptcode == ICPT_PV_INSTR) { + sclp_service_call_protected(env, sccb, code); + return; + } + r = sclp_service_call(env, sccb, code); if (r < 0) { kvm_s390_program_interrupt(cpu, -r);