From patchwork Tue May 31 10:15:52 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Huth X-Patchwork-Id: 12865269 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 8DDCEC4332F for ; Tue, 31 May 2022 10:16:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245603AbiEaKQN (ORCPT ); Tue, 31 May 2022 06:16:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50220 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245599AbiEaKQL (ORCPT ); Tue, 31 May 2022 06:16:11 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 9BE6E5D5E8 for ; Tue, 31 May 2022 03:16:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1653992169; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=wCPXeBnkbLo6o8FOolTIukxJfk3u/6gpAkFsx8fWFds=; b=EzXugQhh1/OmPs++80WdIY5gXodd10UGg+/38fUFakPvu1JelT5NW4HdFFOMFG+Z390Q20 jLWFMRRy2DaTkrDVfz4Aqmp+k315K/8GyPRPgMsy1X5YS5ZKqL2u/uJVWflMU16GYd0M9U AdnWXgXcO50eu43w36ObJHcHYQ4bg/o= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-422-4kP9LMxuN1WFFzMdBtVq9A-1; Tue, 31 May 2022 06:16:05 -0400 X-MC-Unique: 4kP9LMxuN1WFFzMdBtVq9A-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 1C5F93C11056; Tue, 31 May 2022 10:16:05 +0000 (UTC) Received: from thuth.com (unknown [10.39.194.45]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1E010492C3B; Tue, 31 May 2022 10:16:01 +0000 (UTC) From: Thomas Huth To: kvm@vger.kernel.org, Christian Borntraeger , Janosch Frank , Claudio Imbrenda Cc: linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, David Hildenbrand , Paolo Bonzini , Shuah Khan , Janis Schoetterl-Glausch , linux-s390@vger.kernel.org Subject: [PATCH v4 2/4] KVM: s390: selftests: Use TAP interface in the sync_regs test Date: Tue, 31 May 2022 12:15:52 +0200 Message-Id: <20220531101554.36844-3-thuth@redhat.com> In-Reply-To: <20220531101554.36844-1-thuth@redhat.com> References: <20220531101554.36844-1-thuth@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.85 on 10.11.54.9 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org The sync_regs test currently does not have any output (unless one of the TEST_ASSERT statement fails), so it's hard to say for a user whether a certain new sub-test has been included in the binary or not. Let's make this a little bit more user-friendly and include some TAP output via the kselftests.h interface. To be able to distinguish the different sub-tests more easily, we also break up the huge main() function here in more fine grained parts. Acked-by: Janosch Frank Signed-off-by: Thomas Huth --- .../selftests/kvm/s390x/sync_regs_test.c | 87 ++++++++++++++----- 1 file changed, 66 insertions(+), 21 deletions(-) diff --git a/tools/testing/selftests/kvm/s390x/sync_regs_test.c b/tools/testing/selftests/kvm/s390x/sync_regs_test.c index caf7b8859a94..9510739e226d 100644 --- a/tools/testing/selftests/kvm/s390x/sync_regs_test.c +++ b/tools/testing/selftests/kvm/s390x/sync_regs_test.c @@ -21,6 +21,7 @@ #include "test_util.h" #include "kvm_util.h" #include "diag318_test_handler.h" +#include "kselftest.h" #define VCPU_ID 5 @@ -74,27 +75,9 @@ static void compare_sregs(struct kvm_sregs *left, struct kvm_sync_regs *right) #define TEST_SYNC_FIELDS (KVM_SYNC_GPRS|KVM_SYNC_ACRS|KVM_SYNC_CRS|KVM_SYNC_DIAG318) #define INVALID_SYNC_FIELD 0x80000000 -int main(int argc, char *argv[]) +void test_read_invalid(struct kvm_vm *vm, struct kvm_run *run) { - struct kvm_vm *vm; - struct kvm_run *run; - struct kvm_regs regs; - struct kvm_sregs sregs; - int rv, cap; - - /* Tell stdout not to buffer its content */ - setbuf(stdout, NULL); - - cap = kvm_check_cap(KVM_CAP_SYNC_REGS); - if (!cap) { - print_skip("CAP_SYNC_REGS not supported"); - exit(KSFT_SKIP); - } - - /* Create VM */ - vm = vm_create_default(VCPU_ID, 0, guest_code); - - run = vcpu_state(vm, VCPU_ID); + int rv; /* Request reading invalid register set from VCPU. */ run->kvm_valid_regs = INVALID_SYNC_FIELD; @@ -110,6 +93,11 @@ int main(int argc, char *argv[]) "Invalid kvm_valid_regs did not cause expected KVM_RUN error: %d\n", rv); vcpu_state(vm, VCPU_ID)->kvm_valid_regs = 0; +} + +void test_set_invalid(struct kvm_vm *vm, struct kvm_run *run) +{ + int rv; /* Request setting invalid register set into VCPU. */ run->kvm_dirty_regs = INVALID_SYNC_FIELD; @@ -125,6 +113,13 @@ int main(int argc, char *argv[]) "Invalid kvm_dirty_regs did not cause expected KVM_RUN error: %d\n", rv); vcpu_state(vm, VCPU_ID)->kvm_dirty_regs = 0; +} + +void test_req_and_verify_all_valid_regs(struct kvm_vm *vm, struct kvm_run *run) +{ + struct kvm_sregs sregs; + struct kvm_regs regs; + int rv; /* Request and verify all valid register sets. */ run->kvm_valid_regs = TEST_SYNC_FIELDS; @@ -146,6 +141,13 @@ int main(int argc, char *argv[]) vcpu_sregs_get(vm, VCPU_ID, &sregs); compare_sregs(&sregs, &run->s.regs); +} + +void test_set_and_verify_various_reg_values(struct kvm_vm *vm, struct kvm_run *run) +{ + struct kvm_sregs sregs; + struct kvm_regs regs; + int rv; /* Set and verify various register values */ run->s.regs.gprs[11] = 0xBAD1DEA; @@ -180,6 +182,11 @@ int main(int argc, char *argv[]) vcpu_sregs_get(vm, VCPU_ID, &sregs); compare_sregs(&sregs, &run->s.regs); +} + +void test_clear_kvm_dirty_regs_bits(struct kvm_vm *vm, struct kvm_run *run) +{ + int rv; /* Clear kvm_dirty_regs bits, verify new s.regs values are * overwritten with existing guest values. @@ -200,8 +207,46 @@ int main(int argc, char *argv[]) TEST_ASSERT(run->s.regs.diag318 != 0x4B1D, "diag318 sync regs value incorrect 0x%llx.", run->s.regs.diag318); +} + +struct testdef { + const char *name; + void (*test)(struct kvm_vm *vm, struct kvm_run *run); +} testlist[] = { + { "read invalid", test_read_invalid }, + { "set invalid", test_set_invalid }, + { "request+verify all valid regs", test_req_and_verify_all_valid_regs }, + { "set+verify various regs", test_set_and_verify_various_reg_values }, + { "clear kvm_dirty_regs bits", test_clear_kvm_dirty_regs_bits }, +}; + +int main(int argc, char *argv[]) +{ + static struct kvm_run *run; + static struct kvm_vm *vm; + int idx; + + /* Tell stdout not to buffer its content */ + setbuf(stdout, NULL); + + ksft_print_header(); + + if (!kvm_check_cap(KVM_CAP_SYNC_REGS)) + ksft_exit_skip("CAP_SYNC_REGS not supported"); + + ksft_set_plan(ARRAY_SIZE(testlist)); + + /* Create VM */ + vm = vm_create_default(VCPU_ID, 0, guest_code); + + run = vcpu_state(vm, VCPU_ID); + + for (idx = 0; idx < ARRAY_SIZE(testlist); idx++) { + testlist[idx].test(vm, run); + ksft_test_result_pass("%s\n", testlist[idx].name); + } kvm_vm_free(vm); - return 0; + ksft_finished(); /* Print results and exit() accordingly */ }