From patchwork Fri Apr 1 11:16:01 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claudio Imbrenda X-Patchwork-Id: 12798157 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8DEA3C433EF for ; Fri, 1 Apr 2022 11:16:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345426AbiDALS2 (ORCPT ); Fri, 1 Apr 2022 07:18:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34494 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345509AbiDALSY (ORCPT ); Fri, 1 Apr 2022 07:18:24 -0400 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5CF9F18462B for ; Fri, 1 Apr 2022 04:16:35 -0700 (PDT) Received: from pps.filterd (m0098404.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.1.2/8.16.1.2) with SMTP id 2319j1Xt007294 for ; Fri, 1 Apr 2022 11:16:35 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=J08RTSthDlzbecxQQNYvs4aY7cSJUh2Aa5Q21E7FtwQ=; b=Htl4hfaUc4evcoA0Fra+ZOfMCV16n+QSGG1tJpeKL6hIOMpAXN10JqjIIRQeChEaeJor +0U9TRF1l9Ltapw3pUtsO7qgmKTTMdLiHyGqRapw2Zq8sGDFpTDsaHbcs/Z7k4YTZ1yk mm5NQ6vw/L7j1rxcbZIhP9uSd8indl5Dv4+echHKOA8oVoDWhKKxq+9LfOd8UUfN6G0d RJ80a5mTBnhWTwIWYYotkkXGr+I+2e5jc6Pg2gm7lYp+nc+ouVL+OVZJkTJsai5o9uDj 8v1J+IwOVnAmhl1/SbD22lF8DVSjH1a9WCcHv0kUfISoW0zp4CYZM/CGUTCNqaTfmJbQ iw== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 3f5y1j9tts-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT) for ; Fri, 01 Apr 2022 11:16:34 +0000 Received: from m0098404.ppops.net (m0098404.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.43/8.16.0.43) with SMTP id 231BEPQK005068 for ; Fri, 1 Apr 2022 11:16:34 GMT Received: from ppma04ams.nl.ibm.com (63.31.33a9.ip4.static.sl-reverse.com [169.51.49.99]) by mx0a-001b2d01.pphosted.com with ESMTP id 3f5y1j9tt0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 01 Apr 2022 11:16:34 +0000 Received: from pps.filterd (ppma04ams.nl.ibm.com [127.0.0.1]) by ppma04ams.nl.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 231B8dGC027953; Fri, 1 Apr 2022 11:16:32 GMT Received: from b06cxnps4075.portsmouth.uk.ibm.com (d06relay12.portsmouth.uk.ibm.com [9.149.109.197]) by ppma04ams.nl.ibm.com with ESMTP id 3f1tf94v69-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 01 Apr 2022 11:16:32 +0000 Received: from d06av22.portsmouth.uk.ibm.com (d06av22.portsmouth.uk.ibm.com [9.149.105.58]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 231BGTe213631854 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 1 Apr 2022 11:16:29 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 132664C040; Fri, 1 Apr 2022 11:16:29 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B19514C05C; Fri, 1 Apr 2022 11:16:28 +0000 (GMT) Received: from localhost.localdomain (unknown [9.145.3.73]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 1 Apr 2022 11:16:28 +0000 (GMT) From: Claudio Imbrenda To: pbonzini@redhat.com Cc: kvm@vger.kernel.org, borntraeger@de.ibm.com, frankja@linux.ibm.com, thuth@redhat.com, Nico Boehr Subject: [kvm-unit-tests GIT PULL 08/27] s390x: Add test for PFMF low-address protection Date: Fri, 1 Apr 2022 13:16:01 +0200 Message-Id: <20220401111620.366435-9-imbrenda@linux.ibm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220401111620.366435-1-imbrenda@linux.ibm.com> References: <20220401111620.366435-1-imbrenda@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: TMNu4zmod0bQWSEwJur5-ACcJqnYE8zp X-Proofpoint-GUID: OYfKhwjhtDNHVcz0xkzynnd45i_0G3C0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.850,Hydra:6.0.425,FMLib:17.11.64.514 definitions=2022-04-01_04,2022-03-31_01,2022-02-23_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 malwarescore=0 clxscore=1015 adultscore=0 phishscore=0 priorityscore=1501 impostorscore=0 mlxscore=0 mlxlogscore=652 lowpriorityscore=0 bulkscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2202240000 definitions=main-2204010050 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Nico Boehr PFMF should respect the low-address protection when clearing pages, hence add some tests for it. When low-address protection fails, clearing frame 0 is a destructive operation. It messes up interrupts and thus printing test results won't work properly. Hence, we first attempt to clear frame 1 which is not as destructive. Doing it this way around increases the chances for the user to see a proper failure message instead of QEMU randomly quitting in the middle of the test run. Signed-off-by: Nico Boehr Reviewed-by: Claudio Imbrenda Reviewed-by: Janosch Frank Reviewed-by: Thomas Huth Signed-off-by: Claudio Imbrenda --- s390x/pfmf.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/s390x/pfmf.c b/s390x/pfmf.c index 2f3cb110..aa130529 100644 --- a/s390x/pfmf.c +++ b/s390x/pfmf.c @@ -113,6 +113,34 @@ static void test_1m_clear(void) report_prefix_pop(); } +static void test_low_addr_prot(void) +{ + union pfmf_r1 r1 = { + .reg.cf = 1, + .reg.fsc = PFMF_FSC_4K + }; + + report_prefix_push("low-address protection"); + + report_prefix_push("0x1000"); + expect_pgm_int(); + low_prot_enable(); + pfmf(r1.val, (void *)0x1000); + low_prot_disable(); + check_pgm_int_code(PGM_INT_CODE_PROTECTION); + report_prefix_pop(); + + report_prefix_push("0x0"); + expect_pgm_int(); + low_prot_enable(); + pfmf(r1.val, 0); + low_prot_disable(); + check_pgm_int_code(PGM_INT_CODE_PROTECTION); + report_prefix_pop(); + + report_prefix_pop(); +} + int main(void) { bool has_edat = test_facility(8); @@ -124,6 +152,7 @@ int main(void) } test_priv(); + test_low_addr_prot(); /* Force the buffer pages in */ memset(pagebuf, 0, PAGE_SIZE * 256);