From nobody Sun Feb 8 05:59:08 2026 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 EA218C0015E for ; Tue, 25 Jul 2023 22:03:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232021AbjGYWDx (ORCPT ); Tue, 25 Jul 2023 18:03:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47972 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231911AbjGYWDC (ORCPT ); Tue, 25 Jul 2023 18:03:02 -0400 Received: from mail-pg1-x549.google.com (mail-pg1-x549.google.com [IPv6:2607:f8b0:4864:20::549]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CB84730DD for ; Tue, 25 Jul 2023 15:02:29 -0700 (PDT) Received: by mail-pg1-x549.google.com with SMTP id 41be03b00d2f7-563ab574cb5so1114930a12.1 for ; Tue, 25 Jul 2023 15:02:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1690322534; x=1690927334; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=uYb2UntJCk/zn4c108HA9yrg8j3dAHpcDzElziN7WIY=; b=xfBM6s26jIZR4tKHpN5cd5tGGN3dCvhjj6B+IBCaPz8I7dc7Wrl2gcTdnsmi5cwETW qW+huhKAXm6iJbBQI9IdKm+q01Ajlv5Uv6cOsi2+juIL8bTmUlYqmfLdkRhGwGcwdjh9 Koz1CrduWFY6PCwFQUVcQfkcclozEzBClHSC4HHvIcjMzFYGYHzv6sLApCC6jc6JELJi 47M9z0zeEpPwp+7L8Hw8pkPC55y+YtN43Qxv6CUYKhLKHIbHqKQozX1nFMQtrK/U9Suq +qvq3c61LKNxLONkIXcYdEcey0KelBhjgwng+T/nmwcGbtOrZwo7I1ZYu5wiU6gQkcv1 9uug== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1690322534; x=1690927334; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=uYb2UntJCk/zn4c108HA9yrg8j3dAHpcDzElziN7WIY=; b=FxgnyZadur3fYpV0JJ1JTP1mwBXNNxiVEpo8/JWB+2HCLrb2+bXv+doK4aE6xQk5Iv Z411fwExzf9n81YuRm9swJGcfmD3JMM5qQUgg4CrCtbo+XxE9/qdNE1msQ5mmveBF8eQ YSrzHj+wF2ZL1O8mkcy0eUc4olWGmU/V7Kvgnl1lYluZuajNry3uZM4j/N8taDPnU8o3 I1t0zVVRDWEkdRv8Zm2G1YHQ7woSgq+hRDtgQj2lr5g+jk1P1kqqOmQ6kfkMWOk82oBs C4ZEufd8IqRJGi7kqi7DhYXRPrVgOYMBVnD1bVkseUaTyk9zkxkKQPmGK8FVC6xJbk9F GYqQ== X-Gm-Message-State: ABy/qLa0DanT8fdIcfxbxUhSh/9iQkdRp/nEiC5enu+Fk0Wts34I24gg O9aMgjU8rabFHkmhJgX4FS3cHj4zHYgy X-Google-Smtp-Source: APBJJlFrxhyN0gYmcU9m+L2b/2sDxek5BxJMk4MKZdCLwIXYEIL1JgCEJq+CGpMKSuItzkE4tA0pTqPKqjQY X-Received: from afranji.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:47f1]) (user=afranji job=sendgmr) by 2002:a63:8c54:0:b0:55b:5c9b:671e with SMTP id q20-20020a638c54000000b0055b5c9b671emr2339pgn.5.1690322534554; Tue, 25 Jul 2023 15:02:14 -0700 (PDT) Date: Tue, 25 Jul 2023 22:01:07 +0000 In-Reply-To: <20230725220132.2310657-1-afranji@google.com> Mime-Version: 1.0 References: <20230725220132.2310657-1-afranji@google.com> X-Mailer: git-send-email 2.41.0.487.g6d72f3e995-goog Message-ID: <20230725220132.2310657-15-afranji@google.com> Subject: [PATCH v4 14/28] KVM: selftests: TDX: Add TDX IO reads test From: Ryan Afranji To: linux-kselftest@vger.kernel.org Cc: pbonzini@redhat.com, seanjc@google.com, isaku.yamahata@intel.com, sagis@google.com, erdemaktas@google.com, afranji@google.com, runanwang@google.com, shuah@kernel.org, drjones@redhat.com, maz@kernel.org, bgardon@google.com, jmattson@google.com, dmatlack@google.com, peterx@redhat.com, oupton@google.com, ricarkol@google.com, yang.zhong@intel.com, wei.w.wang@intel.com, xiaoyao.li@intel.com, pgonda@google.com, eesposit@redhat.com, borntraeger@de.ibm.com, eric.auger@redhat.com, wangyanan55@huawei.com, aaronlewis@google.com, vkuznets@redhat.com, pshier@google.com, axelrasmussen@google.com, zhenzhong.duan@intel.com, maciej.szmigiero@oracle.com, like.xu@linux.intel.com, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, ackerleytng@google.com Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Sagi Shahar The test verifies IO reads of various sizes from the host to the guest. Signed-off-by: Sagi Shahar Signed-off-by: Ackerley Tng Change-Id: If5b43a7b084823707b5b4a546c16800d5c61daaf Signed-off-by: Ryan Afranji --- .../selftests/kvm/x86_64/tdx_vm_tests.c | 87 +++++++++++++++++++ 1 file changed, 87 insertions(+) diff --git a/tools/testing/selftests/kvm/x86_64/tdx_vm_tests.c b/tools/test= ing/selftests/kvm/x86_64/tdx_vm_tests.c index ca0136930775..9ac0b793f8c5 100644 --- a/tools/testing/selftests/kvm/x86_64/tdx_vm_tests.c +++ b/tools/testing/selftests/kvm/x86_64/tdx_vm_tests.c @@ -429,6 +429,92 @@ void verify_guest_writes(void) printf("\t ... PASSED\n"); } =20 +#define TDX_IO_READS_TEST_PORT 0x52 + +/* + * Verifies IO functionality by reading values of different sizes + * from the host. + */ +void guest_io_reads(void) +{ + uint64_t data; + uint64_t ret; + + ret =3D tdg_vp_vmcall_instruction_io(TDX_IO_READS_TEST_PORT, 1, + TDG_VP_VMCALL_INSTRUCTION_IO_READ, + &data); + if (ret) + tdx_test_fatal(ret); + if (data !=3D 0xAB) + tdx_test_fatal(1); + + ret =3D tdg_vp_vmcall_instruction_io(TDX_IO_READS_TEST_PORT, 2, + TDG_VP_VMCALL_INSTRUCTION_IO_READ, + &data); + if (ret) + tdx_test_fatal(ret); + if (data !=3D 0xABCD) + tdx_test_fatal(2); + + ret =3D tdg_vp_vmcall_instruction_io(TDX_IO_READS_TEST_PORT, 4, + TDG_VP_VMCALL_INSTRUCTION_IO_READ, + &data); + if (ret) + tdx_test_fatal(ret); + if (data !=3D 0xFFABCDEF) + tdx_test_fatal(4); + + // Read an invalid number of bytes. + ret =3D tdg_vp_vmcall_instruction_io(TDX_IO_READS_TEST_PORT, 5, + TDG_VP_VMCALL_INSTRUCTION_IO_READ, + &data); + if (ret) + tdx_test_fatal(ret); + + tdx_test_success(); +} + +void verify_guest_reads(void) +{ + struct kvm_vm *vm; + struct kvm_vcpu *vcpu; + + vm =3D td_create(); + td_initialize(vm, VM_MEM_SRC_ANONYMOUS, 0); + vcpu =3D td_vcpu_add(vm, 0, guest_io_reads); + td_finalize(vm); + + printf("Verifying guest reads:\n"); + + td_vcpu_run(vcpu); + TDX_TEST_CHECK_GUEST_FAILURE(vcpu); + TDX_TEST_ASSERT_IO(vcpu, TDX_IO_READS_TEST_PORT, 1, + TDG_VP_VMCALL_INSTRUCTION_IO_READ); + *(uint8_t *)((void *)vcpu->run + vcpu->run->io.data_offset) =3D 0xAB; + + td_vcpu_run(vcpu); + TDX_TEST_CHECK_GUEST_FAILURE(vcpu); + TDX_TEST_ASSERT_IO(vcpu, TDX_IO_READS_TEST_PORT, 2, + TDG_VP_VMCALL_INSTRUCTION_IO_READ); + *(uint16_t *)((void *)vcpu->run + vcpu->run->io.data_offset) =3D 0xABCD; + + td_vcpu_run(vcpu); + TDX_TEST_CHECK_GUEST_FAILURE(vcpu); + TDX_TEST_ASSERT_IO(vcpu, TDX_IO_READS_TEST_PORT, 4, + TDG_VP_VMCALL_INSTRUCTION_IO_READ); + *(uint32_t *)((void *)vcpu->run + vcpu->run->io.data_offset) =3D 0xFFABCD= EF; + + td_vcpu_run(vcpu); + ASSERT_EQ(vcpu->run->exit_reason, KVM_EXIT_SYSTEM_EVENT); + ASSERT_EQ(vcpu->run->system_event.data[1], TDG_VP_VMCALL_INVALID_OPERAND); + + td_vcpu_run(vcpu); + TDX_TEST_ASSERT_SUCCESS(vcpu); + + kvm_vm_free(vm); + printf("\t ... PASSED\n"); +} + int main(int argc, char **argv) { setbuf(stdout, NULL); @@ -444,6 +530,7 @@ int main(int argc, char **argv) run_in_new_process(&verify_td_cpuid); run_in_new_process(&verify_get_td_vmcall_info); run_in_new_process(&verify_guest_writes); + run_in_new_process(&verify_guest_reads); =20 return 0; } --=20 2.41.0.487.g6d72f3e995-goog