From patchwork Fri Jan 31 10:02:04 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Janosch Frank X-Patchwork-Id: 11359537 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B03C713A4 for ; Fri, 31 Jan 2020 10:02:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8E774214D8 for ; Fri, 31 Jan 2020 10:02:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728364AbgAaKCp (ORCPT ); Fri, 31 Jan 2020 05:02:45 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:1540 "EHLO mx0b-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728160AbgAaKCp (ORCPT ); Fri, 31 Jan 2020 05:02:45 -0500 Received: from pps.filterd (m0127361.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 00V9uueg069666 for ; Fri, 31 Jan 2020 05:02:44 -0500 Received: from e06smtp01.uk.ibm.com (e06smtp01.uk.ibm.com [195.75.94.97]) by mx0a-001b2d01.pphosted.com with ESMTP id 2xrvwayepe-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Fri, 31 Jan 2020 05:02:42 -0500 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) Fri, 31 Jan 2020 10:02:21 -0000 Received: from d06av25.portsmouth.uk.ibm.com (d06av25.portsmouth.uk.ibm.com [9.149.105.61]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 00VA2KEP58130568 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 31 Jan 2020 10:02:20 GMT Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6BC7D11C052; Fri, 31 Jan 2020 10:02:20 +0000 (GMT) Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2C2A311C054; Fri, 31 Jan 2020 10:02:19 +0000 (GMT) Received: from localhost.localdomain (unknown [9.145.11.63]) by d06av25.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 31 Jan 2020 10:02:18 +0000 (GMT) From: Janosch Frank To: kvm@vger.kernel.org Cc: thuth@redhat.com, borntraeger@de.ibm.com, david@redhat.com, cohuck@redhat.com, linux-s390@vger.kernel.org Subject: [PATCH v10 5/6] selftests: KVM: s390x: Add reset tests Date: Fri, 31 Jan 2020 05:02:04 -0500 X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200131100205.74720-1-frankja@linux.ibm.com> References: <20200131100205.74720-1-frankja@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 x-cbid: 20013110-4275-0000-0000-0000039CBB97 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 20013110-4276-0000-0000-000038B0DBF4 Message-Id: <20200131100205.74720-6-frankja@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.572 definitions=2020-01-31_02:2020-01-30,2020-01-31 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=4 adultscore=0 malwarescore=0 phishscore=0 spamscore=0 impostorscore=0 bulkscore=0 lowpriorityscore=0 mlxscore=0 mlxlogscore=999 clxscore=1015 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1911200001 definitions=main-2001310088 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Test if the registers end up having the correct values after a normal, initial and clear reset. Signed-off-by: Janosch Frank Reviewed-by: Thomas Huth Reviewed-by: Cornelia Huck --- tools/testing/selftests/kvm/Makefile | 1 + tools/testing/selftests/kvm/s390x/resets.c | 155 +++++++++++++++++++++ 2 files changed, 156 insertions(+) create mode 100644 tools/testing/selftests/kvm/s390x/resets.c diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile index 3138a916574a..fe1ea294730c 100644 --- a/tools/testing/selftests/kvm/Makefile +++ b/tools/testing/selftests/kvm/Makefile @@ -36,6 +36,7 @@ TEST_GEN_PROGS_aarch64 += kvm_create_max_vcpus TEST_GEN_PROGS_s390x = s390x/memop TEST_GEN_PROGS_s390x += s390x/sync_regs_test +TEST_GEN_PROGS_s390x += s390x/resets TEST_GEN_PROGS_s390x += dirty_log_test TEST_GEN_PROGS_s390x += kvm_create_max_vcpus diff --git a/tools/testing/selftests/kvm/s390x/resets.c b/tools/testing/selftests/kvm/s390x/resets.c new file mode 100644 index 000000000000..fb8e976943a9 --- /dev/null +++ b/tools/testing/selftests/kvm/s390x/resets.c @@ -0,0 +1,155 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Test for s390x CPU resets + * + * Copyright (C) 2020, IBM + */ + +#include +#include +#include +#include + +#include "test_util.h" +#include "kvm_util.h" + +#define VCPU_ID 3 + +struct kvm_vm *vm; +struct kvm_run *run; +struct kvm_sync_regs *regs; +static uint64_t regs_null[16]; + +static uint64_t crs[16] = { 0x40000ULL, + 0x42000ULL, + 0, 0, 0, 0, 0, + 0x43000ULL, + 0, 0, 0, 0, 0, + 0x44000ULL, + 0, 0 +}; + +static void guest_code_initial(void) +{ + /* Round toward 0 */ + uint32_t fpc = 0x11; + + /* Dirty registers */ + asm volatile ( + " lctlg 0,15,%0\n" + " sfpc %1\n" + : : "Q" (crs), "d" (fpc)); + GUEST_SYNC(0); +} + +static void test_one_reg(uint64_t id, uint64_t value) +{ + struct kvm_one_reg reg; + uint64_t eval_reg; + + reg.addr = (uintptr_t)&eval_reg; + reg.id = id; + vcpu_get_reg(vm, VCPU_ID, ®); + TEST_ASSERT(eval_reg == value, "value == %s", value); +} + +static void assert_clear(void) +{ + struct kvm_sregs sregs; + struct kvm_regs regs; + struct kvm_fpu fpu; + + vcpu_regs_get(vm, VCPU_ID, ®s); + TEST_ASSERT(!memcmp(®s.gprs, regs_null, sizeof(regs.gprs)), "grs == 0"); + + vcpu_sregs_get(vm, VCPU_ID, &sregs); + TEST_ASSERT(!memcmp(&sregs.acrs, regs_null, sizeof(sregs.acrs)), "acrs == 0"); + + vcpu_fpu_get(vm, VCPU_ID, &fpu); + TEST_ASSERT(!memcmp(&fpu.fprs, regs_null, sizeof(fpu.fprs)), "fprs == 0"); +} + +static void assert_initial(void) +{ + struct kvm_sregs sregs; + struct kvm_fpu fpu; + + vcpu_sregs_get(vm, VCPU_ID, &sregs); + TEST_ASSERT(sregs.crs[0] == 0xE0UL, "cr0 == 0xE0"); + TEST_ASSERT(sregs.crs[14] == 0xC2000000UL, "cr14 == 0xC2000000"); + TEST_ASSERT(!memcmp(&sregs.crs[1], regs_null, sizeof(sregs.crs[1]) * 12), + "cr1-13 == 0"); + TEST_ASSERT(sregs.crs[15] == 0, "cr15 == 0"); + + vcpu_fpu_get(vm, VCPU_ID, &fpu); + TEST_ASSERT(!fpu.fpc, "fpc == 0"); + + test_one_reg(KVM_REG_S390_GBEA, 1); + test_one_reg(KVM_REG_S390_PP, 0); + test_one_reg(KVM_REG_S390_TODPR, 0); + test_one_reg(KVM_REG_S390_CPU_TIMER, 0); + test_one_reg(KVM_REG_S390_CLOCK_COMP, 0); +} + +static void assert_normal(void) +{ + test_one_reg(KVM_REG_S390_PFTOKEN, KVM_S390_PFAULT_TOKEN_INVALID); +} + +static void test_normal(void) +{ + printf("Testing normal reset\n"); + /* Create VM */ + vm = vm_create_default(VCPU_ID, 0, guest_code_initial); + run = vcpu_state(vm, VCPU_ID); + regs = &run->s.regs; + + vcpu_run(vm, VCPU_ID); + + vcpu_ioctl(vm, VCPU_ID, KVM_S390_NORMAL_RESET, 0); + assert_normal(); + kvm_vm_free(vm); +} + +static void test_initial(void) +{ + printf("Testing initial reset\n"); + vm = vm_create_default(VCPU_ID, 0, guest_code_initial); + run = vcpu_state(vm, VCPU_ID); + regs = &run->s.regs; + + vcpu_run(vm, VCPU_ID); + + vcpu_ioctl(vm, VCPU_ID, KVM_S390_INITIAL_RESET, 0); + assert_normal(); + assert_initial(); + kvm_vm_free(vm); +} + +static void test_clear(void) +{ + printf("Testing clear reset\n"); + vm = vm_create_default(VCPU_ID, 0, guest_code_initial); + run = vcpu_state(vm, VCPU_ID); + regs = &run->s.regs; + + vcpu_run(vm, VCPU_ID); + + vcpu_ioctl(vm, VCPU_ID, KVM_S390_CLEAR_RESET, 0); + assert_normal(); + assert_initial(); + assert_clear(); + kvm_vm_free(vm); +} + +int main(int argc, char *argv[]) +{ + setbuf(stdout, NULL); /* Tell stdout not to buffer its content */ + + test_initial(); + if (kvm_check_cap(KVM_CAP_S390_VCPU_RESETS)) { + test_normal(); + test_clear(); + } + return 0; +}