From patchwork Fri Aug 6 00:09:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Kuppuswamy Sathyanarayanan X-Patchwork-Id: 12422345 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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 1FD2CC432BE for ; Fri, 6 Aug 2021 00:10:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 037C661151 for ; Fri, 6 Aug 2021 00:10:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242677AbhHFAKQ (ORCPT ); Thu, 5 Aug 2021 20:10:16 -0400 Received: from mga04.intel.com ([192.55.52.120]:45281 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229644AbhHFAKQ (ORCPT ); Thu, 5 Aug 2021 20:10:16 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10067"; a="212422356" X-IronPort-AV: E=Sophos;i="5.84,299,1620716400"; d="scan'208";a="212422356" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Aug 2021 17:10:01 -0700 X-IronPort-AV: E=Sophos;i="5.84,299,1620716400"; d="scan'208";a="420562693" Received: from rmgular-mobl2.amr.corp.intel.com (HELO skuppusw-desk1.amr.corp.intel.com) ([10.251.138.25]) by orsmga003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Aug 2021 17:09:59 -0700 From: Kuppuswamy Sathyanarayanan To: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Peter Zijlstra , Andy Lutomirski , Hans de Goede , Mark Gross , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko Cc: Peter H Anvin , Dave Hansen , Tony Luck , Dan Williams , Andi Kleen , Kirill Shutemov , Sean Christopherson , Kuppuswamy Sathyanarayanan , x86@kernel.org, linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org, bpf@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH v4 0/7] Add TDX Guest Support (Attestation support) Date: Thu, 5 Aug 2021 17:09:38 -0700 Message-Id: <20210806000946.2951441-1-sathyanarayanan.kuppuswamy@linux.intel.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Hi All, Intel's Trust Domain Extensions (TDX) protect guest VMs from malicious hosts and some physical attacks. VM guest with TDX support is called as TD Guest. In TD Guest, the attestation process is used to verify the trustworthiness of TD guest to the 3rd party servers. Such attestation process is required by 3rd party servers before sending sensitive information to TD guests. One usage example is to get encryption keys from the key server for mounting the encrypted rootfs or secondary drive. Following patches adds the attestation support to TDX guest which includes attestation user interface driver, user agent example, and related hypercall support. In this series, only following patches are in arch/x86 and are intended for x86 maintainers review. * x86/tdx: Add TDREPORT TDX Module call support * x86/tdx: Add GetQuote TDX hypercall support * x86/tdx: Add SetupEventNotifyInterrupt TDX hypercall support Patch titled "platform/x86: intel_tdx_attest: Add TDX Guest attestation interface driver" adds the attestation driver support. This is supposed to be reviewed by platform-x86 maintainers. Also, patch titled "tools/tdx: Add a sample attestation user app" adds a testing app for attestation feature which needs review from bpf@vger.kernel.org. This series is the continuation of the following TDX patch series which added basic TDX guest support. [set 1, v5] - https://lore.kernel.org/patchwork/project/lkml/list/?series=510805 [set 2, v4] - https://lore.kernel.org/patchwork/project/lkml/list/?series=510814 [set 3, v4] - https://lore.kernel.org/patchwork/project/lkml/list/?series=510816 [set 4, v4] - https://lore.kernel.org/patchwork/project/lkml/list/?series=510836 [set 5, v3] - https://lkml.org/lkml/2021/8/5/1195 Also please note that this series alone is not necessarily fully functional. You can find TDX related documents in the following link. https://software.intel.com/content/www/br/pt/develop/articles/intel-trust-domain-extensions.html Changes since v3: * Since the code added by patch titled "x86/tdx: Add tdg_debug_enabled() interface" is only used by other patches in this series, moved it here. * Rebased on top of Tom Lendacky's protected guest changes (https://lore.kernel.org/patchwork/cover/1468760/ * Rest of the history is included in individual patches. Changes since v2: * Rebased on top of v5.14-rc1. * Rest of the history is included in individual patches. Changes since v1: * Included platform-x86 and test tool maintainers in recipient list. * Fixed commit log and comments in attestation driver as per Han's comments. Kuppuswamy Sathyanarayanan (7): x86/tdx: Add tdg_debug_enabled() interface x86/tdx: Add TDREPORT TDX Module call support x86/tdx: Add GetQuote TDX hypercall support x86/tdx: Add SetupEventNotifyInterrupt TDX hypercall support x86/tdx: Add TDX Guest event notify interrupt vector support platform/x86: intel_tdx_attest: Add TDX Guest attestation interface driver tools/tdx: Add a sample attestation user app arch/x86/include/asm/hardirq.h | 1 + arch/x86/include/asm/idtentry.h | 4 + arch/x86/include/asm/irq_vectors.h | 7 +- arch/x86/include/asm/tdx.h | 8 + arch/x86/kernel/irq.c | 7 + arch/x86/kernel/tdx.c | 140 +++++++++++ drivers/platform/x86/intel/Kconfig | 1 + drivers/platform/x86/intel/Makefile | 1 + drivers/platform/x86/intel/tdx/Kconfig | 13 + drivers/platform/x86/intel/tdx/Makefile | 3 + .../platform/x86/intel/tdx/intel_tdx_attest.c | 212 ++++++++++++++++ include/uapi/misc/tdx.h | 37 +++ tools/Makefile | 13 +- tools/tdx/Makefile | 19 ++ tools/tdx/attest/.gitignore | 2 + tools/tdx/attest/Makefile | 24 ++ tools/tdx/attest/tdx-attest-test.c | 232 ++++++++++++++++++ 17 files changed, 717 insertions(+), 7 deletions(-) create mode 100644 drivers/platform/x86/intel/tdx/Kconfig create mode 100644 drivers/platform/x86/intel/tdx/Makefile create mode 100644 drivers/platform/x86/intel/tdx/intel_tdx_attest.c create mode 100644 include/uapi/misc/tdx.h create mode 100644 tools/tdx/Makefile create mode 100644 tools/tdx/attest/.gitignore create mode 100644 tools/tdx/attest/Makefile create mode 100644 tools/tdx/attest/tdx-attest-test.c Acked-by: Hans de Goede