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 X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 09B96C2D0B1 for ; Thu, 6 Feb 2020 10:47:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D217420730 for ; Thu, 6 Feb 2020 10:47:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="jH77qwhp" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728398AbgBFKrs (ORCPT ); Thu, 6 Feb 2020 05:47:48 -0500 Received: from us-smtp-1.mimecast.com ([205.139.110.61]:46335 "EHLO us-smtp-delivery-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728319AbgBFKrr (ORCPT ); Thu, 6 Feb 2020 05:47:47 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1580986066; 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=ewpivZESotMD79J0VWILRYzsWscgyt+xFYuSgg9jkN4=; b=jH77qwhpQVGhU8aC0Ck3doNbYMld9fclV7bUHyKoOg3/jM7UjfqQjBq9Ww86sZKKRNQrAl Vb4gnMMZWfskayguEuTtABMEGbbqiB4YNBu03QzJqN8yQeRIcewi6yRbptYf1zBMmSEpER 06iQHOKrQlQiL/GJqpeZo8Hf78xyzfU= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-372-0Ns3quFKMgOTftDJ9BlpkA-1; Thu, 06 Feb 2020 05:47:40 -0500 X-MC-Unique: 0Ns3quFKMgOTftDJ9BlpkA-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id E056D1922961; Thu, 6 Feb 2020 10:47:38 +0000 (UTC) Received: from laptop.redhat.com (ovpn-116-37.ams2.redhat.com [10.36.116.37]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0B7D28E9EA; Thu, 6 Feb 2020 10:47:30 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, pbonzini@redhat.com, vkuznets@redhat.com Cc: thuth@redhat.com, drjones@redhat.com, wei.huang2@amd.com Subject: [PATCH v4 3/3] selftests: KVM: SVM: Add vmcall test Date: Thu, 6 Feb 2020 11:47:10 +0100 Message-Id: <20200206104710.16077-4-eric.auger@redhat.com> In-Reply-To: <20200206104710.16077-1-eric.auger@redhat.com> References: <20200206104710.16077-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Content-Transfer-Encoding: quoted-printable Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org L2 guest calls vmcall and L1 checks the exit status does correspond. Signed-off-by: Eric Auger Reviewed-by: Vitaly Kuznetsov Reviewed-by: Miaohe Lin --- v3 -> v4: - remove useless includes - collected Lin's R-b v2 -> v3: - remove useless comment and add Vitaly's R-b --- tools/testing/selftests/kvm/Makefile | 1 + .../selftests/kvm/x86_64/svm_vmcall_test.c | 79 +++++++++++++++++++ 2 files changed, 80 insertions(+) create mode 100644 tools/testing/selftests/kvm/x86_64/svm_vmcall_test.c diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftes= ts/kvm/Makefile index 2e770f554cae..b529d3b42c02 100644 --- a/tools/testing/selftests/kvm/Makefile +++ b/tools/testing/selftests/kvm/Makefile @@ -26,6 +26,7 @@ TEST_GEN_PROGS_x86_64 +=3D x86_64/vmx_dirty_log_test TEST_GEN_PROGS_x86_64 +=3D x86_64/vmx_set_nested_state_test TEST_GEN_PROGS_x86_64 +=3D x86_64/vmx_tsc_adjust_test TEST_GEN_PROGS_x86_64 +=3D x86_64/xss_msr_test +TEST_GEN_PROGS_x86_64 +=3D x86_64/svm_vmcall_test TEST_GEN_PROGS_x86_64 +=3D clear_dirty_log_test TEST_GEN_PROGS_x86_64 +=3D dirty_log_test TEST_GEN_PROGS_x86_64 +=3D kvm_create_max_vcpus diff --git a/tools/testing/selftests/kvm/x86_64/svm_vmcall_test.c b/tools= /testing/selftests/kvm/x86_64/svm_vmcall_test.c new file mode 100644 index 000000000000..6d3565aab94e --- /dev/null +++ b/tools/testing/selftests/kvm/x86_64/svm_vmcall_test.c @@ -0,0 +1,79 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * svm_vmcall_test + * + * Copyright (C) 2020, Red Hat, Inc. + * + * Nested SVM testing: VMCALL + */ + +#include "test_util.h" +#include "kvm_util.h" +#include "processor.h" +#include "svm_util.h" + +#define VCPU_ID 5 + +static struct kvm_vm *vm; + +static inline void l2_vmcall(struct svm_test_data *svm) +{ + __asm__ __volatile__("vmcall"); +} + +static void l1_guest_code(struct svm_test_data *svm) +{ + #define L2_GUEST_STACK_SIZE 64 + unsigned long l2_guest_stack[L2_GUEST_STACK_SIZE]; + struct vmcb *vmcb =3D svm->vmcb; + + /* Prepare for L2 execution. */ + generic_svm_setup(svm, l2_vmcall, + &l2_guest_stack[L2_GUEST_STACK_SIZE]); + + run_guest(vmcb, svm->vmcb_gpa); + + GUEST_ASSERT(vmcb->control.exit_code =3D=3D SVM_EXIT_VMMCALL); + GUEST_DONE(); +} + +int main(int argc, char *argv[]) +{ + vm_vaddr_t svm_gva; + + nested_svm_check_supported(); + + vm =3D vm_create_default(VCPU_ID, 0, (void *) l1_guest_code); + vcpu_set_cpuid(vm, VCPU_ID, kvm_get_supported_cpuid()); + + vcpu_alloc_svm(vm, &svm_gva); + vcpu_args_set(vm, VCPU_ID, 1, svm_gva); + + for (;;) { + volatile struct kvm_run *run =3D vcpu_state(vm, VCPU_ID); + struct ucall uc; + + vcpu_run(vm, VCPU_ID); + TEST_ASSERT(run->exit_reason =3D=3D KVM_EXIT_IO, + "Got exit_reason other than KVM_EXIT_IO: %u (%s)\n", + run->exit_reason, + exit_reason_str(run->exit_reason)); + + switch (get_ucall(vm, VCPU_ID, &uc)) { + case UCALL_ABORT: + TEST_ASSERT(false, "%s", + (const char *)uc.args[0]); + /* NOT REACHED */ + case UCALL_SYNC: + break; + case UCALL_DONE: + goto done; + default: + TEST_ASSERT(false, + "Unknown ucall 0x%x.", uc.cmd); + } + } +done: + kvm_vm_free(vm); + return 0; +} --=20 2.20.1