From patchwork Tue Jan 10 19:43:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Gonda X-Patchwork-Id: 13095601 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 CEE1EC54EBC for ; Tue, 10 Jan 2023 19:43:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232512AbjAJTns (ORCPT ); Tue, 10 Jan 2023 14:43:48 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47096 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232214AbjAJTnY (ORCPT ); Tue, 10 Jan 2023 14:43:24 -0500 Received: from mail-pl1-x64a.google.com (mail-pl1-x64a.google.com [IPv6:2607:f8b0:4864:20::64a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C6942178A1 for ; Tue, 10 Jan 2023 11:43:22 -0800 (PST) Received: by mail-pl1-x64a.google.com with SMTP id s2-20020a170902ea0200b0019247629ee5so9052022plg.17 for ; Tue, 10 Jan 2023 11:43:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:mime-version:message-id:date:from:to:cc:subject :date:message-id:reply-to; bh=XmjuGEcRACakTvOMtrLrmXhVn02mZnR7fERkmJ1dYkc=; b=rXV+aFWr3GAnUDp4iw94U5r3juez5gY6E40D21jZPY+Kir5xKBuk1BinoAEDlKhseN Skjx/QVvdik0l/9326BENbkDQIyWfAcUbIgL1YgB4gI9ohPBz4R7EtCazN/zB0rc4IP/ Hohjhb5qPyO/AJyWcblDFbe+/Q0UzAJFN2CbSZ7hwHKev3YNkL5ldEmIX1khgDLLRMx+ TkzyzgeAfkFocz29yr0IlXz5+Ote8oZF9u7mFhgUeAZM7DWvzKi8NPjPJ6PJ9xkyBdxx UwmaOvjfbdKfnpmO/A1ieviS7VaVhJyQJ/zIwZURvk5XgR8GHoS4lYdRpDO4Xi6umkjz NdjQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:from:subject:mime-version:message-id:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=XmjuGEcRACakTvOMtrLrmXhVn02mZnR7fERkmJ1dYkc=; b=mlct8qmGGmjQfG3R9D5lkJRLHhxRMEoIL9hdq986GHKMXD+pKlTX94ZzVtlTFLU5tp hgxXHbnkFiQ1PFLEWLFi/yzhe7a2a1ZokKddSuW79udwlX4vqIcw+2El4APrxVS2dcIY 5rQKwU42bD+YyLWxA3eM4Wjr7gxCb7+QNDJVpM4U6SfyVuWwO8nVEJCLTpRNsUTzkFpj gPJYWE+O0V/3g2lnuFYE3HrDJL9AbgFi10SMPvWeQ7UZjnO8uF8LySx0gW5USIOFk08Q qedE7tweQtbmQ4OwpR79hn9Z0zVRHMctJtPCscaRkgt4orf3eVLX6eN44Xs7U9Ktt3om 6sZg== X-Gm-Message-State: AFqh2krQcVx4iMn8KJjCfeWZtEBxVUx/gklpPMBVMuZW1Ar6l9z3d1ha vprFM/UX4UUaxSXzBB8Ph0QRgop8SOwysPGSlInK+NjGVzZwnk3LYSixKcIZcYy0m9q+2ANGFL4 NGtl5Sl/JA3tPZCp4ZKN4j0+omVqnC6qQM+BFPwU6eAk0t7HQq2ro6NvJ+Q== X-Google-Smtp-Source: AMrXdXvxlL0QPDsTWiYuM9c/C5hYNN1CxBk526MWowwobh4qRYTlxj7BbwWIy5YStL1CKT4qpoVKVxyyeao= X-Received: from pgonda1.kir.corp.google.com ([2620:0:1008:11:8358:4c2a:eae1:4752]) (user=pgonda job=sendgmr) by 2002:a17:902:a98a:b0:187:190f:6aa7 with SMTP id bh10-20020a170902a98a00b00187190f6aa7mr4899864plb.131.1673379802175; Tue, 10 Jan 2023 11:43:22 -0800 (PST) Date: Tue, 10 Jan 2023 11:43:19 -0800 Message-Id: <20230110194319.953718-1-pgonda@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.39.0.314.g84b9a713c41-goog Subject: [PATCH V6.1 7/7] KVM: selftests: Add simple sev vm testing From: Peter Gonda To: kvm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Peter Gonda , Paolo Bonzini , Sean Christopherson , Vishal Annapurve , Ackerley Tng , Andrew Jones , Michael Roth Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org A very simple of booting SEV guests that checks related CPUID bits. This is a stripped down version of "[PATCH v2 08/13] KVM: selftests: add SEV boot tests" from Michael but much simpler. Cc: Paolo Bonzini Cc: Sean Christopherson Cc: Vishal Annapurve Cc: Ackerley Tng cc: Andrew Jones Suggested-by: Michael Roth Signed-off-by: Peter Gonda --- V6.1 *Fixes gitignore change headers. --- tools/testing/selftests/kvm/Makefile | 1 + .../selftests/kvm/x86_64/sev_all_boot_test.c | 84 +++++++++++++++++++ 3 files changed, 169 insertions(+) create mode 100644 tools/testing/selftests/kvm/x86_64/sev_all_boot_test.c diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile index b7cfb15712d1..66d7ab3da990 100644 --- a/tools/testing/selftests/kvm/Makefile +++ b/tools/testing/selftests/kvm/Makefile @@ -111,6 +111,7 @@ TEST_GEN_PROGS_x86_64 += x86_64/tsc_msrs_test TEST_GEN_PROGS_x86_64 += x86_64/vmx_pmu_caps_test TEST_GEN_PROGS_x86_64 += x86_64/xen_shinfo_test TEST_GEN_PROGS_x86_64 += x86_64/xen_vmcall_test +TEST_GEN_PROGS_x86_64 += x86_64/sev_all_boot_test TEST_GEN_PROGS_x86_64 += x86_64/sev_migrate_tests TEST_GEN_PROGS_x86_64 += x86_64/amx_test TEST_GEN_PROGS_x86_64 += x86_64/max_vcpuid_cap_test diff --git a/tools/testing/selftests/kvm/x86_64/sev_all_boot_test.c b/tools/testing/selftests/kvm/x86_64/sev_all_boot_test.c new file mode 100644 index 000000000000..e9e4d7305bc1 --- /dev/null +++ b/tools/testing/selftests/kvm/x86_64/sev_all_boot_test.c @@ -0,0 +1,84 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Basic SEV boot tests. + * + */ +#include +#include +#include +#include +#include + +#include "test_util.h" +#include "kvm_util.h" +#include "processor.h" +#include "svm_util.h" +#include "linux/psp-sev.h" +#include "sev.h" + +#define NR_SYNCS 1 + +#define MSR_AMD64_SEV_BIT 1 + +static void guest_run_loop(struct kvm_vcpu *vcpu) +{ + struct ucall uc; + int i; + + for (i = 0; i <= NR_SYNCS; ++i) { + vcpu_run(vcpu); + switch (get_ucall(vcpu, &uc)) { + case UCALL_SYNC: + continue; + case UCALL_DONE: + return; + case UCALL_ABORT: + REPORT_GUEST_ASSERT(uc); + default: + TEST_FAIL("Unexpected exit: %s", + exit_reason_str(vcpu->run->exit_reason)); + } + } +} + +static void is_sev_enabled(void) +{ + uint64_t sev_status; + + GUEST_ASSERT(this_cpu_has(X86_FEATURE_SEV)); + + sev_status = rdmsr(MSR_AMD64_SEV); + GUEST_ASSERT(sev_status & 0x1); +} + +static void guest_sev_code(void) +{ + GUEST_SYNC(1); + + is_sev_enabled(); + + GUEST_DONE(); +} + +static void test_sev(void *guest_code, uint64_t policy) +{ + struct kvm_vm *vm; + struct kvm_vcpu *vcpu; + + vm = vm_sev_create_with_one_vcpu(policy, guest_code, &vcpu); + TEST_ASSERT(vm, "vm_sev_create_with_one_vcpu() failed to create VM\n"); + + guest_run_loop(vcpu); + + kvm_vm_free(vm); +} + +int main(int argc, char *argv[]) +{ + TEST_REQUIRE(is_kvm_sev_supported()); + + test_sev(guest_sev_code, SEV_POLICY_NO_DBG); + test_sev(guest_sev_code, 0); + + return 0; +}