From patchwork Mon Jan 10 05:40:42 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Reiji Watanabe X-Patchwork-Id: 12708236 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6F4C1C433EF for ; Mon, 10 Jan 2022 05:42:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:References: Mime-Version:Message-Id:In-Reply-To:Date:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=jmS/qZqO2zwMQnaR2GHmVEEtEC0EhrsIJm9FunoY0U8=; b=TvmT8BhN0qYdmkh3OBu0qliPRf vfgxNJOHwTvkd7NVe7nMFoxiWrPtRraLs3WV+hZOGkXjSBAwz3twl7cAAK93Y+N1SThBN16KU81bz zueP9lDGWXrucT/iYy7LrRxPBCALkLVo7DqxwTb7Z1deCYcAzdrRpwyzFRP6xM9+ZyErIyDVUICKN fEAwOHK40P3pFdWYGyE3JcZgKwh1hztG+mMNWa2YGHIQCK5M1kIt6T17K2Cht4kl2cCG9+IOGNYED KlBWb/6CQZJBqrwQcXsf9ppLBfMWCEgy/BsWfxaGdWpuQScwsWZoQrBHnduqq3BFgpUVM5ogcuocb AW+nXm+w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1n6nRC-009LWP-RJ; Mon, 10 Jan 2022 05:41:47 +0000 Received: from mail-pf1-x44a.google.com ([2607:f8b0:4864:20::44a]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1n6nQq-009LPY-Rg for linux-arm-kernel@lists.infradead.org; Mon, 10 Jan 2022 05:41:26 +0000 Received: by mail-pf1-x44a.google.com with SMTP id y15-20020a62b50f000000b004be3069a65bso1509572pfe.10 for ; Sun, 09 Jan 2022 21:41:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=L1XwvF1r7y5PRO+boTaNuTeg5JcDFRKy/7kUcvyJgIk=; b=ivaWcDCKMptpC+2Gyz5PlEwTB+lkFt+sRkpm+fW1bkvDlT+L9lDNkcJdnWvU4IMZuf dqtVGmSHGvrcKIpwLw1EmGOsZwO465d/qr4cHs1b8IBS1ZQ8GxSL4zPSEwhaykw+fbqG 4/np2DQw0fT0l3gq+9HEHPpKRx/ktew8h91goRu2gHdrm9uydrLoq3HGkNvgieQ8zo3G n62q0Ay3xTB3tE9syeSBlz9f/Ls6BJDFksyj6BU/Mdk001MlXTA1rOUaaxqmok52btZD c8URc2M1wYdWTEh2MasMSg9PnPtfOUtNe6X81+bZZg1PZ8K2jv96qwoXiWFECx2GZBLs UIrA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=L1XwvF1r7y5PRO+boTaNuTeg5JcDFRKy/7kUcvyJgIk=; b=S026O7RwVo8WdSXGJ79ba3gO0QEJWyMvu5BGdL743vvGMlMruIPsQFt4ZbiFgrshYM Add/dNOELy60jnjB7weZFBofW02NtYAjmBP/HqO3Ei27h5/ncLCnj96Bw4weJm34WeCG JJl2hPRps8UtwLuqrWjJ6D+4fblSXHtyrhQQJGxfX1LkgTCRoyeB++2jYkXoo3ERyOC4 vobMz/goxLA9ki9t66O1dex9fTF0VXK0n5NrNQW+g/SY/3Px/FV5NZ4UPibiK6aSrrnb UpnoW2L1BC3P/k6Q3rf4m8MkVRI1i5e++DRbt1OR226fHbd/sv/QVqvywNnQtRAhgzjU wloA== X-Gm-Message-State: AOAM5306VtxMwnIxPK/6v6FrAQ/5SqkAXdTrgcD0DV5FD1V6nLPMtU4M 65nxUHLMiaoDL1oK/AdaRgV+FYvn1rM= X-Google-Smtp-Source: ABdhPJyRAA/U0THLj1vGaXUkmPPljZhPPSiC6fN42d565nCC83OCtbo6QtygcQw9pke/raOzEGb0XEURibI= X-Received: from reiji-vws-sp.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:3d59]) (user=reijiw job=sendgmr) by 2002:a17:90a:410a:: with SMTP id u10mr641815pjf.1.1641793283018; Sun, 09 Jan 2022 21:41:23 -0800 (PST) Date: Sun, 9 Jan 2022 21:40:42 -0800 In-Reply-To: <20220110054042.1079932-1-reijiw@google.com> Message-Id: <20220110054042.1079932-2-reijiw@google.com> Mime-Version: 1.0 References: <20220110054042.1079932-1-reijiw@google.com> X-Mailer: git-send-email 2.34.1.575.g55b058a8bb-goog Subject: [PATCH 2/2] KVM: arm64: selftests: Introduce vcpu_width_config From: Reiji Watanabe To: Marc Zyngier , kvmarm@lists.cs.columbia.edu Cc: kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, James Morse , Alexandru Elisei , Suzuki K Poulose , Paolo Bonzini , Will Deacon , Peter Shier , Ricardo Koller , Oliver Upton , Jing Zhang , Raghavendra Rao Anata , Reiji Watanabe X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220109_214124_925549_08F5005E X-CRM114-Status: GOOD ( 19.66 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Introduce a test for aarch64 that ensures non-mixed-width vCPUs (all 64bit vCPUs or all 32bit vcPUs) can be configured, and mixed-width vCPUs cannot be configured. Signed-off-by: Reiji Watanabe Reviewed-by: Andrew Jones --- tools/testing/selftests/kvm/.gitignore | 1 + tools/testing/selftests/kvm/Makefile | 1 + .../selftests/kvm/aarch64/vcpu_width_config.c | 125 ++++++++++++++++++ 3 files changed, 127 insertions(+) create mode 100644 tools/testing/selftests/kvm/aarch64/vcpu_width_config.c diff --git a/tools/testing/selftests/kvm/.gitignore b/tools/testing/selftests/kvm/.gitignore index 3cb5ac5da087..8795a83cc382 100644 --- a/tools/testing/selftests/kvm/.gitignore +++ b/tools/testing/selftests/kvm/.gitignore @@ -3,6 +3,7 @@ /aarch64/debug-exceptions /aarch64/get-reg-list /aarch64/psci_cpu_on_test +/aarch64/vcpu_width_config /aarch64/vgic_init /s390x/memop /s390x/resets diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile index 17342b575e85..259e01d0735a 100644 --- a/tools/testing/selftests/kvm/Makefile +++ b/tools/testing/selftests/kvm/Makefile @@ -95,6 +95,7 @@ TEST_GEN_PROGS_aarch64 += aarch64/arch_timer TEST_GEN_PROGS_aarch64 += aarch64/debug-exceptions TEST_GEN_PROGS_aarch64 += aarch64/get-reg-list TEST_GEN_PROGS_aarch64 += aarch64/psci_cpu_on_test +TEST_GEN_PROGS_aarch64 += aarch64/vcpu_width_config TEST_GEN_PROGS_aarch64 += aarch64/vgic_init TEST_GEN_PROGS_aarch64 += demand_paging_test TEST_GEN_PROGS_aarch64 += dirty_log_test diff --git a/tools/testing/selftests/kvm/aarch64/vcpu_width_config.c b/tools/testing/selftests/kvm/aarch64/vcpu_width_config.c new file mode 100644 index 000000000000..cd238e068236 --- /dev/null +++ b/tools/testing/selftests/kvm/aarch64/vcpu_width_config.c @@ -0,0 +1,125 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * vcpu_width_config - Test KVM_ARM_VCPU_INIT() with KVM_ARM_VCPU_EL1_32BIT. + * + * Copyright (c) 2022 Google LLC. + * + * This is a test that ensures that non-mixed-width vCPUs (all 64bit vCPUs + * or all 32bit vcPUs) can be configured and mixed-width vCPUs cannot be + * configured. + */ + +#define _GNU_SOURCE + +#include "kvm_util.h" +#include "processor.h" +#include "test_util.h" + + +/* + * Add a vCPU, run KVM_ARM_VCPU_INIT with @init1, and then + * add another vCPU, and run KVM_ARM_VCPU_INIT with @init2. + */ +int add_init_2vcpus(struct kvm_vcpu_init *init1, + struct kvm_vcpu_init *init2) +{ + struct kvm_vm *vm; + int ret; + + vm = vm_create(VM_MODE_DEFAULT, DEFAULT_GUEST_PHY_PAGES, O_RDWR); + + vm_vcpu_add(vm, 0); + ret = _vcpu_ioctl(vm, 0, KVM_ARM_VCPU_INIT, init1); + if (ret) + goto free_exit; + + vm_vcpu_add(vm, 1); + ret = _vcpu_ioctl(vm, 1, KVM_ARM_VCPU_INIT, init2); + +free_exit: + kvm_vm_free(vm); + return ret; +} + +/* + * Add two vCPUs, then run KVM_ARM_VCPU_INIT for one vCPU with @init1, + * and run KVM_ARM_VCPU_INIT for another vCPU with @init2. + */ +int add_2vcpus_init_2vcpus(struct kvm_vcpu_init *init1, + struct kvm_vcpu_init *init2) +{ + struct kvm_vm *vm; + int ret; + + vm = vm_create(VM_MODE_DEFAULT, DEFAULT_GUEST_PHY_PAGES, O_RDWR); + + vm_vcpu_add(vm, 0); + vm_vcpu_add(vm, 1); + + ret = _vcpu_ioctl(vm, 0, KVM_ARM_VCPU_INIT, init1); + if (ret) + goto free_exit; + + ret = _vcpu_ioctl(vm, 1, KVM_ARM_VCPU_INIT, init2); + +free_exit: + kvm_vm_free(vm); + return ret; +} + +/* + * Tests that two 64bit vCPUs can be configured, two 32bit vCPUs can be + * configured, and two mixed-witgh vCPUs cannot be configured. + * Each of those three cases, configure vCPUs in two different orders. + * The one is running KVM_CREATE_VCPU for 2 vCPUs, and then running + * KVM_ARM_VCPU_INIT for them. + * The other is running KVM_CREATE_VCPU and KVM_ARM_VCPU_INIT for a vCPU, + * and then run those commands for another vCPU. + */ +int main(void) +{ + struct kvm_vcpu_init init1, init2; + struct kvm_vm *vm; + int ret; + + if (kvm_check_cap(KVM_CAP_ARM_EL1_32BIT) <= 0) { + print_skip("KVM_CAP_ARM_EL1_32BIT is not supported"); + exit(KSFT_SKIP); + } + + /* Get the preferred target type and copy that to init2 */ + vm = vm_create(VM_MODE_DEFAULT, DEFAULT_GUEST_PHY_PAGES, O_RDWR); + vm_ioctl(vm, KVM_ARM_PREFERRED_TARGET, &init1); + kvm_vm_free(vm); + memcpy(&init2, &init1, sizeof(init2)); + + /* Test with 64bit vCPUs */ + ret = add_init_2vcpus(&init1, &init2); + TEST_ASSERT(ret == 0, + "Configuring 64bit EL1 vCPUs failed unexpectedly"); + ret = add_2vcpus_init_2vcpus(&init1, &init2); + TEST_ASSERT(ret == 0, + "Configuring 64bit EL1 vCPUs failed unexpectedly"); + + /* Test with 32bit vCPUs */ + init1.features[0] = (1 << KVM_ARM_VCPU_EL1_32BIT); + init2.features[0] = (1 << KVM_ARM_VCPU_EL1_32BIT); + ret = add_init_2vcpus(&init1, &init2); + TEST_ASSERT(ret == 0, + "Configuring 32bit EL1 vCPUs failed unexpectedly"); + ret = add_2vcpus_init_2vcpus(&init1, &init2); + TEST_ASSERT(ret == 0, + "Configuring 32bit EL1 vCPUs failed unexpectedly"); + + /* Test with mixed-width vCPUs */ + init1.features[0] = 0; + init2.features[0] = (1 << KVM_ARM_VCPU_EL1_32BIT); + ret = add_init_2vcpus(&init1, &init2); + TEST_ASSERT(ret != 0, + "Configuring mixed-width vCPUs worked unexpectedly"); + ret = add_2vcpus_init_2vcpus(&init1, &init2); + TEST_ASSERT(ret != 0, + "Configuring mixed-width vCPUs worked unexpectedly"); + + return 0; +}