From patchwork Thu Dec 6 22:24:17 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Collin Walling X-Patchwork-Id: 10717137 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 657D41759 for ; Thu, 6 Dec 2018 22:28:27 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 56EA42D817 for ; Thu, 6 Dec 2018 22:28:27 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4B49C2E06E; Thu, 6 Dec 2018 22:28:27 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id B36042D927 for ; Thu, 6 Dec 2018 22:28:26 +0000 (UTC) Received: from localhost ([::1]:43269 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gV289-0002I8-VE for patchwork-qemu-devel@patchwork.kernel.org; Thu, 06 Dec 2018 17:28:25 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47928) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gV255-0007nJ-Uq for qemu-devel@nongnu.org; Thu, 06 Dec 2018 17:25:17 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gV24z-00039f-Ln for qemu-devel@nongnu.org; Thu, 06 Dec 2018 17:25:14 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:44400 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 1gV24z-00038M-CW for qemu-devel@nongnu.org; Thu, 06 Dec 2018 17:25:09 -0500 Received: from pps.filterd (m0098421.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id wB6MJ23v023043 for ; Thu, 6 Dec 2018 17:25:08 -0500 Received: from e33.co.us.ibm.com (e33.co.us.ibm.com [32.97.110.151]) by mx0a-001b2d01.pphosted.com with ESMTP id 2p7cf4088u-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 06 Dec 2018 17:25:08 -0500 Received: from localhost by e33.co.us.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) Thu, 6 Dec 2018 22:25:04 -0000 Received: from b03ledav001.gho.boulder.ibm.com (b03ledav001.gho.boulder.ibm.com [9.17.130.232]) by b03cxnp08027.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id wB6MP3tF23789684 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 6 Dec 2018 22:25:03 GMT Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6FB9C6E058; Thu, 6 Dec 2018 22:25:03 +0000 (GMT) Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D06B76E050; Thu, 6 Dec 2018 22:25:02 +0000 (GMT) Received: from collin-ThinkPad-W541.pok.ibm.com (unknown [9.56.58.52]) by b03ledav001.gho.boulder.ibm.com (Postfix) with ESMTP; Thu, 6 Dec 2018 22:25:02 +0000 (GMT) From: Collin Walling To: qemu-devel@nongnu.org, qemu-s390x@nongnu.org, cohuck@redhat.com, rth@twiddle.net, david@redhat.com, borntraeger@de.ibm.com, thuth@redhat.com Date: Thu, 6 Dec 2018 17:24:17 -0500 X-Mailer: git-send-email 2.7.4 In-Reply-To: <1544135058-21380-1-git-send-email-walling@linux.ibm.com> References: <1544135058-21380-1-git-send-email-walling@linux.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18120622-0036-0000-0000-00000A66C121 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00010184; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000270; SDB=6.01127998; UDB=6.00585943; IPR=6.00908129; MB=3.00024517; MTD=3.00000008; XFM=3.00000015; UTC=2018-12-06 22:25:06 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18120622-0037-0000-0000-000049E2F110 Message-Id: <1544135058-21380-3-git-send-email-walling@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2018-12-06_08:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1812060188 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.158.5 Subject: [Qemu-devel] [PATCH v2 2/3] s390: cpu feature for diagnose 318 andlimit max VCPUs to 247 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: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Diagnose 318 is a new z14.2 CPU feature. Since we are able to emulate it entirely via KVM, we can add guest support for earlier models. A new CPU feature for diagnose 318 (shortened to diag318) will be made available to guests starting with the zEC12-full CPU model. The z14.2 adds a new read SCP info byte (let's call it byte 134) to detect the availability of diag318. Because of this, we have room for one less VCPU and thus limit the max VPUs supported in a configuration to 247 (down from 248). Signed-off-by: Collin Walling . --- hw/s390x/sclp.c | 2 ++ include/hw/s390x/sclp.h | 2 ++ target/s390x/cpu.h | 2 +- target/s390x/cpu_features.c | 3 +++ target/s390x/cpu_features.h | 1 + target/s390x/cpu_features_def.h | 3 +++ target/s390x/gen-features.c | 1 + target/s390x/kvm.c | 1 + 8 files changed, 14 insertions(+), 1 deletion(-) diff --git a/hw/s390x/sclp.c b/hw/s390x/sclp.c index 4510a80..183c627 100644 --- a/hw/s390x/sclp.c +++ b/hw/s390x/sclp.c @@ -73,6 +73,8 @@ static void read_SCP_info(SCLPDevice *sclp, SCCB *sccb) read_info->conf_char); s390_get_feat_block(S390_FEAT_TYPE_SCLP_CONF_CHAR_EXT, read_info->conf_char_ext); + /* Read Info byte 134 */ + s390_get_feat_block(S390_FEAT_TYPE_SCLP_BYTE_134, read_info->byte_134); read_info->facilities = cpu_to_be64(SCLP_HAS_CPU_INFO | SCLP_HAS_IOA_RECONFIG); diff --git a/include/hw/s390x/sclp.h b/include/hw/s390x/sclp.h index f9db243..eb12ba2 100644 --- a/include/hw/s390x/sclp.h +++ b/include/hw/s390x/sclp.h @@ -133,6 +133,8 @@ typedef struct ReadInfo { uint16_t highest_cpu; uint8_t _reserved5[124 - 122]; /* 122-123 */ uint32_t hmfai; + uint8_t _reserved7[134 - 128]; /* 128-133 */ + uint8_t byte_134[1]; struct CPUEntry entries[0]; } QEMU_PACKED ReadInfo; diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h index 8c2320e..594b4a4 100644 --- a/target/s390x/cpu.h +++ b/target/s390x/cpu.h @@ -52,7 +52,7 @@ #define MMU_USER_IDX 0 -#define S390_MAX_CPUS 248 +#define S390_MAX_CPUS 247 typedef struct PSW { uint64_t mask; diff --git a/target/s390x/cpu_features.c b/target/s390x/cpu_features.c index 60cfeba..d05afa5 100644 --- a/target/s390x/cpu_features.c +++ b/target/s390x/cpu_features.c @@ -121,6 +121,9 @@ static const S390FeatDef s390_features[] = { FEAT_INIT("pfmfi", S390_FEAT_TYPE_SCLP_CONF_CHAR_EXT, 9, "SIE: PFMF interpretation facility"), FEAT_INIT("ibs", S390_FEAT_TYPE_SCLP_CONF_CHAR_EXT, 10, "SIE: Interlock-and-broadcast-suppression facility"), + /* SCLP SCCB Byte 134 */ + FEAT_INIT("diag318", S390_FEAT_TYPE_SCLP_BYTE_134, 0, "SIE: Diagnose 318"), + FEAT_INIT("sief2", S390_FEAT_TYPE_SCLP_CPU, 4, "SIE: interception format 2 (Virtual SIE)"), FEAT_INIT("skey", S390_FEAT_TYPE_SCLP_CPU, 5, "SIE: Storage-key facility"), FEAT_INIT("gpereh", S390_FEAT_TYPE_SCLP_CPU, 10, "SIE: Guest-PER enhancement facility"), diff --git a/target/s390x/cpu_features.h b/target/s390x/cpu_features.h index effe790..e7248df 100644 --- a/target/s390x/cpu_features.h +++ b/target/s390x/cpu_features.h @@ -23,6 +23,7 @@ typedef enum { S390_FEAT_TYPE_STFL, S390_FEAT_TYPE_SCLP_CONF_CHAR, S390_FEAT_TYPE_SCLP_CONF_CHAR_EXT, + S390_FEAT_TYPE_SCLP_BYTE_134, S390_FEAT_TYPE_SCLP_CPU, S390_FEAT_TYPE_MISC, S390_FEAT_TYPE_PLO, diff --git a/target/s390x/cpu_features_def.h b/target/s390x/cpu_features_def.h index 5fc7e7b..d99da1d 100644 --- a/target/s390x/cpu_features_def.h +++ b/target/s390x/cpu_features_def.h @@ -109,6 +109,9 @@ typedef enum { S390_FEAT_SIE_PFMFI, S390_FEAT_SIE_IBS, + /* Read Info Byte 134 */ + S390_FEAT_DIAG318, + /* Sclp Cpu */ S390_FEAT_SIE_F2, S390_FEAT_SIE_SKEY, diff --git a/target/s390x/gen-features.c b/target/s390x/gen-features.c index 70015ea..a3d1457 100644 --- a/target/s390x/gen-features.c +++ b/target/s390x/gen-features.c @@ -450,6 +450,7 @@ static uint16_t full_GEN12_GA1[] = { S390_FEAT_AP_QUERY_CONFIG_INFO, S390_FEAT_AP_FACILITIES_TEST, S390_FEAT_AP, + S390_FEAT_DIAG318, }; static uint16_t full_GEN12_GA2[] = { diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c index 2ebf26a..3915e36 100644 --- a/target/s390x/kvm.c +++ b/target/s390x/kvm.c @@ -2142,6 +2142,7 @@ static int kvm_to_feat[][2] = { { KVM_S390_VM_CPU_FEAT_PFMFI, S390_FEAT_SIE_PFMFI}, { KVM_S390_VM_CPU_FEAT_SIGPIF, S390_FEAT_SIE_SIGPIF}, { KVM_S390_VM_CPU_FEAT_KSS, S390_FEAT_SIE_KSS}, + { KVM_S390_VM_CPU_FEAT_DIAG318, S390_FEAT_DIAG318}, }; static int query_cpu_feat(S390FeatBitmap features)