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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6658CC43334 for ; Mon, 4 Jul 2022 12:13:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233988AbiGDMNl (ORCPT ); Mon, 4 Jul 2022 08:13:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51438 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233688AbiGDMNi (ORCPT ); Mon, 4 Jul 2022 08:13:38 -0400 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7CAF8DC7; Mon, 4 Jul 2022 05:13:36 -0700 (PDT) Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 264BGZvi005285; Mon, 4 Jul 2022 12:13:36 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=Xs9BwbqR71GXVeL+iz6ZX2fw0aSrb1rik6PUNblwiYY=; b=g2PA/5OjkaNsd0quM9jHho/RnhqqMbx8Kx4Q9KuDcADLjaQpAOWRi1+Nr2H9XWYyAyjt vRt2RQRMu12USdqcApgRJTKUmaX60ZvOtBWtC5WxcuZBQEwqO375pVo5W1GRhFDZaRW+ zBhnqScP/22LoaRe6A2jzTxaBYBZ2xohibNDQi8xfT8i+C9OBg3r33qaxHbtTTKRXJw1 zB0d8iFIMAwptxHrZYV/DW3MGMYWE7PO+pRfl/HoigRjlq1VP6SbiK/qvI/1YXMteeBV AQbL/suRxCXvL1UjbErSvISTVFsoYMM+Oq3EnrQHbhFBpFaZxQa3uiOI0K4YZqbyv+et 7g== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3h3y6kh74f-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 04 Jul 2022 12:13:35 +0000 Received: from m0098396.ppops.net (m0098396.ppops.net [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 264BW8WP004512; Mon, 4 Jul 2022 12:13:35 GMT Received: from ppma03fra.de.ibm.com (6b.4a.5195.ip4.static.sl-reverse.com [149.81.74.107]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3h3y6kh73r-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 04 Jul 2022 12:13:35 +0000 Received: from pps.filterd (ppma03fra.de.ibm.com [127.0.0.1]) by ppma03fra.de.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 264C6kH5019242; Mon, 4 Jul 2022 12:13:32 GMT Received: from b06cxnps4074.portsmouth.uk.ibm.com (d06relay11.portsmouth.uk.ibm.com [9.149.109.196]) by ppma03fra.de.ibm.com with ESMTP id 3h2dn8t0am-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 04 Jul 2022 12:13:32 +0000 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 264CDTtI21889326 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 4 Jul 2022 12:13:29 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A08055204E; Mon, 4 Jul 2022 12:13:29 +0000 (GMT) Received: from a46lp57.lnxne.boe (unknown [9.152.108.100]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTP id 6BD8E52050; Mon, 4 Jul 2022 12:13:29 +0000 (GMT) From: Nico Boehr To: kvm@vger.kernel.org, linux-s390@vger.kernel.org Cc: frankja@linux.ibm.com, imbrenda@linux.ibm.com, thuth@redhat.com Subject: [kvm-unit-tests PATCH v2 4/4] s390x: add pgm spec interrupt loop test Date: Mon, 4 Jul 2022 14:13:28 +0200 Message-Id: <20220704121328.721841-5-nrb@linux.ibm.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220704121328.721841-1-nrb@linux.ibm.com> References: <20220704121328.721841-1-nrb@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: 0HlcWoQHg6Yoil7VPzEHWUrEmOkJpgZT X-Proofpoint-GUID: h4Zstar_VnTQ0Ji7XjiwjnZUSNDQTzTw X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.883,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-07-04_11,2022-06-28_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 impostorscore=0 bulkscore=0 adultscore=0 clxscore=1015 priorityscore=1501 mlxscore=0 spamscore=0 phishscore=0 suspectscore=0 malwarescore=0 mlxlogscore=934 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2204290000 definitions=main-2207040052 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org An invalid PSW causes a program interrupt. When an invalid PSW is introduced in the pgm_new_psw, an interrupt loop occurs as soon as a program interrupt is caused. QEMU should detect that and panic the guest, hence add a test for it. Signed-off-by: Nico Boehr --- s390x/Makefile | 1 + s390x/panic-loop-pgm.c | 53 ++++++++++++++++++++++++++++++++++++++++++ s390x/unittests.cfg | 6 +++++ 3 files changed, 60 insertions(+) create mode 100644 s390x/panic-loop-pgm.c diff --git a/s390x/Makefile b/s390x/Makefile index e4649da50d9d..66415d0b588d 100644 --- a/s390x/Makefile +++ b/s390x/Makefile @@ -35,6 +35,7 @@ tests += $(TEST_DIR)/pv-attest.elf tests += $(TEST_DIR)/migration-cmm.elf tests += $(TEST_DIR)/migration-skey.elf tests += $(TEST_DIR)/panic-loop-extint.elf +tests += $(TEST_DIR)/panic-loop-pgm.elf pv-tests += $(TEST_DIR)/pv-diags.elf diff --git a/s390x/panic-loop-pgm.c b/s390x/panic-loop-pgm.c new file mode 100644 index 000000000000..68934057a251 --- /dev/null +++ b/s390x/panic-loop-pgm.c @@ -0,0 +1,53 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Program interrupt loop test + * + * Copyright IBM Corp. 2022 + * + * Authors: + * Nico Boehr + */ +#include +#include +#include +#include +#include + +static void pgm_int_handler(void) +{ + /* + * return to pgm_old_psw. This gives us the chance to print the return_fail + * in case something goes wrong. + */ + asm volatile ( + "lpswe %[pgm_old_psw]\n" + : + : [pgm_old_psw] "Q"(lowcore.pgm_old_psw) + : "memory" + ); +} + +int main(void) +{ + report_prefix_push("panic-loop-pgm"); + + if (!host_is_qemu() || host_is_tcg()) { + report_skip("QEMU-KVM-only test"); + goto out; + } + + lowcore.pgm_new_psw.addr = (uint64_t) pgm_int_handler; + /* bit 12 set is invalid */ + lowcore.pgm_new_psw.mask = extract_psw_mask() | BIT(63 - 12); + mb(); + + /* cause a pgm int */ + *((int *)-4) = 0x42; + mb(); + + report_fail("survived pgmint loop"); + +out: + report_prefix_pop(); + return report_summary(); +} diff --git a/s390x/unittests.cfg b/s390x/unittests.cfg index 53aeb94f382c..0f7d830220d7 100644 --- a/s390x/unittests.cfg +++ b/s390x/unittests.cfg @@ -190,3 +190,9 @@ file = panic-loop-extint.elf groups = panic accel = kvm timeout = 5 + +[panic-loop-pgm] +file = panic-loop-pgm.elf +groups = panic +accel = kvm +timeout = 5 -- 2.36.1