From patchwork Mon Mar 21 10:19:00 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nico Boehr X-Patchwork-Id: 12787064 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 1FF8AC433EF for ; Mon, 21 Mar 2022 10:19:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346281AbiCUKUs (ORCPT ); Mon, 21 Mar 2022 06:20:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34324 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346259AbiCUKUi (ORCPT ); Mon, 21 Mar 2022 06:20:38 -0400 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5EE142A240; Mon, 21 Mar 2022 03:19:13 -0700 (PDT) Received: from pps.filterd (m0187473.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.1.2/8.16.1.2) with SMTP id 22L9LhVL016181; Mon, 21 Mar 2022 10:19:13 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=1y+iVhxfboa/6GiahI0C6GZ/jZeoElApDbL4Z8vlqaI=; b=lyp6T2jnrqZnGlwCHJ7pNAhVtJvScD6oNq1+J/Y2WmdVyNUBC8j/gPlXJiicQ1Ah9w4P huPUEeO1KUDGQENoX+PcBppWDGmR6+DK5asbeUF5EQ4bGZF5Dr75sJ/krOlCsZz8+gUX FXNKIZVLpEqvLK38WGGGvu0OVJFUrciXNi8gQVL9OH+wtmCiOTGnEwciyibTLY5y4DrA TTT8i1SIabuPgv8Bg8dJMfEYJsBF4pxx4oHww9Mbm8K4znecy3c6Gw3W99+fbKLtUE6/ rBSfhCSMZdJQZKT32K+AM3we1+EEhesqdYaWLwj6tIVMMJMrOw6fu4tdNHtnt3DQSjtm iA== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 3exkk3w1wc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 21 Mar 2022 10:19:12 +0000 Received: from m0187473.ppops.net (m0187473.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.43/8.16.0.43) with SMTP id 22LAIWue027914; Mon, 21 Mar 2022 10:19:12 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 3exkk3w1vr-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 21 Mar 2022 10:19:12 +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 22LAEb0O029756; Mon, 21 Mar 2022 10:19:10 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 3ew6t8uju4-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 21 Mar 2022 10:19:10 +0000 Received: from d06av25.portsmouth.uk.ibm.com (d06av25.portsmouth.uk.ibm.com [9.149.105.61]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 22LAJ66d15466948 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 21 Mar 2022 10:19:06 GMT Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C8DBA11C04A; Mon, 21 Mar 2022 10:19:06 +0000 (GMT) Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 83B6F11C04C; Mon, 21 Mar 2022 10:19:06 +0000 (GMT) Received: from t46lp57.lnxne.boe (unknown [9.152.108.100]) by d06av25.portsmouth.uk.ibm.com (Postfix) with ESMTP; Mon, 21 Mar 2022 10:19:06 +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, david@redhat.com, farman@linux.ibm.com Subject: [kvm-unit-tests PATCH v1 5/9] s390x: smp: add tests for SET_PREFIX Date: Mon, 21 Mar 2022 11:19:00 +0100 Message-Id: <20220321101904.387640-6-nrb@linux.ibm.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220321101904.387640-1-nrb@linux.ibm.com> References: <20220321101904.387640-1-nrb@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: luZzkLrqSev72xYLRGvX5kbqNicmYky0 X-Proofpoint-ORIG-GUID: HNhAEBmNnwHCxvbjyZRwpIQZIexp6tmt 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=2022-03-21_04,2022-03-21_01,2022-02-23_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 lowpriorityscore=0 mlxscore=0 malwarescore=0 phishscore=0 mlxlogscore=999 bulkscore=0 adultscore=0 clxscore=1015 spamscore=0 suspectscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2202240000 definitions=main-2203210066 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org We cover the following cases: - running CPU - illegal CPU id The order should be rejected in both cases. Signed-off-by: Nico Boehr Reviewed-by: Claudio Imbrenda --- s390x/smp.c | 73 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) diff --git a/s390x/smp.c b/s390x/smp.c index 5d3265f6be64..f22520b4f4fc 100644 --- a/s390x/smp.c +++ b/s390x/smp.c @@ -51,6 +51,8 @@ static uint8_t expected_vec_contents[NUM_VEC_REGISTERS][VEC_REGISTER_SIZE]; static struct gs_cb gs_cb; static struct gs_epl gs_epl; +static uint32_t cpu1_prefix; + static void test_invalid(void) { const struct sigp_invalid_cases *c; @@ -455,6 +457,76 @@ out: report_prefix_pop(); } +static void loop(void) +{ + while (1) + ; +} + +static void stpx_and_set_flag(void) +{ + asm volatile ( + " stpx %[prefix]\n" + : [prefix] "=Q" (cpu1_prefix) + : + : + ); + + set_flag(1); +} + +static void test_set_prefix(void) +{ + struct lowcore *new_lc = alloc_pages_flags(1, AREA_DMA31); + struct cpu *cpu1 = smp_cpu_from_idx(1); + uint32_t status = 0; + struct psw new_psw; + int cc; + + report_prefix_push("set prefix"); + + assert(new_lc); + + memcpy(new_lc, cpu1->lowcore, sizeof(struct lowcore)); + new_lc->restart_new_psw.addr = (unsigned long)loop; + + report_prefix_push("running"); + set_flag(0); + new_psw.addr = (unsigned long)stpx_and_set_flag; + new_psw.mask = extract_psw_mask(); + smp_cpu_start(1, new_psw); + wait_for_flag(); + cpu1_prefix = 0xFFFFFFFF; + + cc = smp_sigp(1, SIGP_SET_PREFIX, (unsigned long)new_lc, &status); + report(cc == 1, "CC = 1"); + report(status == SIGP_STATUS_INCORRECT_STATE, "status = INCORRECT_STATE"); + + /* + * If the prefix of the other CPU was changed it will enter an endless + * loop. Otherwise, it should eventually set the flag. + */ + smp_cpu_stop(1); + set_flag(0); + smp_cpu_restart(1); + wait_for_flag(); + report(cpu1_prefix == (uint64_t)cpu1->lowcore, "prefix unchanged"); + + report_prefix_pop(); + + report_prefix_push("invalid CPU address"); + + cc = sigp(INVALID_CPU_ADDRESS, SIGP_SET_PREFIX, (unsigned long)new_lc, &status); + report(cc == 3, "CC = 3"); + + report_prefix_pop(); + + free_pages(new_lc); + + report_prefix_pop(); + +} + static void ecall(void) { unsigned long mask; @@ -647,6 +719,7 @@ int main(void) test_store_adtl_status_vector(); test_store_adtl_status_gs(); test_store_adtl_status(); + test_set_prefix(); test_ecall(); test_emcall(); test_sense_running();