From patchwork Wed Apr 17 15:28:40 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Borntraeger X-Patchwork-Id: 10905543 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 3C55617E0 for ; Wed, 17 Apr 2019 15:28:57 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 26233285A5 for ; Wed, 17 Apr 2019 15:28:57 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 19F3628A11; Wed, 17 Apr 2019 15:28:57 +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 vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C0EA528A29 for ; Wed, 17 Apr 2019 15:28:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732709AbfDQP24 (ORCPT ); Wed, 17 Apr 2019 11:28:56 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:58706 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732669AbfDQP2x (ORCPT ); Wed, 17 Apr 2019 11:28:53 -0400 Received: from pps.filterd (m0098404.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x3HFLMDO015383 for ; Wed, 17 Apr 2019 11:28:52 -0400 Received: from e06smtp01.uk.ibm.com (e06smtp01.uk.ibm.com [195.75.94.97]) by mx0a-001b2d01.pphosted.com with ESMTP id 2rx4j3713j-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Wed, 17 Apr 2019 11:28:52 -0400 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) Wed, 17 Apr 2019 16:28:46 +0100 Received: from b06wcsmtp001.portsmouth.uk.ibm.com (b06wcsmtp001.portsmouth.uk.ibm.com [9.149.105.160]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x3HFSjmD62980344 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 17 Apr 2019 15:28:45 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 5A321A405B; Wed, 17 Apr 2019 15:28:45 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 46F47A4054; Wed, 17 Apr 2019 15:28:45 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Wed, 17 Apr 2019 15:28:45 +0000 (GMT) Received: by tuxmaker.boeblingen.de.ibm.com (Postfix, from userid 25651) id F172A20F639; Wed, 17 Apr 2019 17:28:44 +0200 (CEST) From: Christian Borntraeger To: Janosch Frank Cc: KVM , Cornelia Huck , Christian Borntraeger , David Hildenbrand , Paolo Bonzini , =?utf-8?b?UmFkaW0gS3LEjW3DocWZ?= , Collin Walling , "Jason J . Herne" Subject: [PATCH 5/7] KVM: s390: provide query function for instructions returning 32 byte Date: Wed, 17 Apr 2019 17:28:40 +0200 X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190417152842.71730-1-borntraeger@de.ibm.com> References: <20190417152842.71730-1-borntraeger@de.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 x-cbid: 19041715-4275-0000-0000-00000328EF07 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19041715-4276-0000-0000-000038382514 Message-Id: <20190417152842.71730-6-borntraeger@de.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-04-17_06:,, 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=730 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1904170104 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Some of the new features have a 32byte response for the query function. Provide a new wrapper similar to __cpacf_query. We might want to factor this out if other users come up, as of today there is none. So let us keep the function within KVM. Signed-off-by: Christian Borntraeger Reviewed-by: Collin Walling Reviewed-by: David Hildenbrand --- arch/s390/kvm/kvm-s390.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index ff2444d935fd..f0404960a715 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -321,6 +321,19 @@ static inline int plo_test_bit(unsigned char nr) return cc == 0; } +static inline void __insn32_query(unsigned int opcode, u8 query[32]) +{ + register unsigned long r0 asm("0") = 0; /* query function */ + register unsigned long r1 asm("1") = (unsigned long) query; + + asm volatile( + /* Parameter regs are ignored */ + " .insn rrf,%[opc] << 16,2,4,6,0\n" + : "=m" (*query) + : "d" (r0), "a" (r1), [opc] "i" (opcode) + : "cc"); +} + static void kvm_s390_cpu_feat_init(void) { int i;