From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C3C2BC10F13 for ; Thu, 11 Apr 2019 11:40:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 934D7217D4 for ; Thu, 11 Apr 2019 11:40:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726629AbfDKLkf (ORCPT ); Thu, 11 Apr 2019 07:40:35 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:55460 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726106AbfDKLkf (ORCPT ); Thu, 11 Apr 2019 07:40:35 -0400 Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x3BBe4nf133110 for ; Thu, 11 Apr 2019 07:40:33 -0400 Received: from e06smtp01.uk.ibm.com (e06smtp01.uk.ibm.com [195.75.94.97]) by mx0a-001b2d01.pphosted.com with ESMTP id 2rt4fqsehg-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 11 Apr 2019 07:40:33 -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) Thu, 11 Apr 2019 12:40:28 +0100 Received: from b06wcsmtp001.portsmouth.uk.ibm.com (b06wcsmtp001.portsmouth.uk.ibm.com [9.149.105.160]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x3BBeRJl47513748 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 11 Apr 2019 11:40:27 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7DBEDA405C; Thu, 11 Apr 2019 11:40:27 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 51D81A405F; Thu, 11 Apr 2019 11:40:27 +0000 (GMT) Received: from oc7455500831.ibm.com (unknown [9.152.224.131]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTP; Thu, 11 Apr 2019 11:40:27 +0000 (GMT) Subject: Re: [kvm-unit-tests PATCH] s390x/skey: Skip the "iske" test when running under z/VM 6 To: Thomas Huth , kvm@vger.kernel.org, David Hildenbrand Cc: Janosch Frank References: <20190411055304.21429-1-thuth@redhat.com> From: Christian Borntraeger Openpgp: preference=signencrypt Autocrypt: addr=borntraeger@de.ibm.com; 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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <20190411055304.21429-1-thuth@redhat.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 x-cbid: 19041111-4275-0000-0000-00000326B92F X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19041111-4276-0000-0000-00003835D946 Message-Id: X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-04-11_07:,, 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-1904110082 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On 11.04.19 07:53, Thomas Huth wrote: > There is a known bug of z/VM 6 which causes the "iske" test to fail. > Since it is still sometimes useful to run the kvm-unit-tests in such > a nested environment, let's rather skip the "iske" test there instead > of always reporting a failure. I have seen the skey test fail as well, but only on 6.3. IIRC 6.4 was good. Do you have a bug number or an offical statement whatever (I did not found one). In general Ack. > > Signed-off-by: Thomas Huth > --- > s390x/skey.c | 55 ++++++++++++++++++++++++++++++++++++++++++++++++---- > 1 file changed, 51 insertions(+), 4 deletions(-) > > diff --git a/s390x/skey.c b/s390x/skey.c > index f4894f1..b1e11af 100644 > --- a/s390x/skey.c > +++ b/s390x/skey.c > @@ -70,9 +70,51 @@ static void test_set(void) > skey.str.acc == ret.str.acc && skey.str.fp == ret.str.fp); > } > > +static inline int stsi(void *addr, int fc, int sel1, int sel2) > +{ > + register int r0 asm("0") = (fc << 28) | sel1; > + register int r1 asm("1") = sel2; > + int rc = 0; > + > + asm volatile( > + " stsi 0(%3)\n" > + " jz 0f\n" > + " lhi %1,-1\n" > + "0:\n" > + : "+d" (r0), "+d" (rc) > + : "d" (r1), "a" (addr) > + : "cc", "memory"); > + > + return rc; > +} > + > +/* Returns true if we are running under z/VM 6.x */ > +static bool check_for_zvm6(void) > +{ > + int dcbt; /* Descriptor block count */ > + int nr; > + static const unsigned char zvm6[] = { > + /* This is "z/VM 6" in EBCDIC */ > + 0xa9, 0x61, 0xe5, 0xd4, 0x40, 0x40, 0x40, 0x40, 0xf6 > + }; > + > + if (stsi(pagebuf, 3, 2, 2)) > + return false; > + > + dcbt = pagebuf[31] & 0xf; > + > + for (nr = 0; nr < dcbt; nr++) { > + if (!memcmp(&pagebuf[32 + nr * 64 + 24], zvm6, sizeof(zvm6))) > + return true; > + } > + > + return false; > +} > + > static void test_priv(void) > { > union skey skey; > + bool is_zvm6 = check_for_zvm6(); > > memset(pagebuf, 0, PAGE_SIZE * 2); > report_prefix_push("privileged"); > @@ -87,10 +129,15 @@ static void test_priv(void) > report("skey did not change on exception", skey.str.acc != 3); > > report_prefix_push("iske"); > - expect_pgm_int(); > - enter_pstate(); > - get_storage_key(page0); > - check_pgm_int_code(PGM_INT_CODE_PRIVILEGED_OPERATION); > + if (is_zvm6) { > + /* There is a known bug with z/VM 6, so skip the test there */ > + report_skip("not working on z/VM 6"); > + } else { > + expect_pgm_int(); > + enter_pstate(); > + get_storage_key(page0); > + check_pgm_int_code(PGM_INT_CODE_PRIVILEGED_OPERATION); > + } > report_prefix_pop(); > > report_prefix_pop(); >