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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,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 22B74C4338F for ; Thu, 5 Aug 2021 23:31:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F2AE761164 for ; Thu, 5 Aug 2021 23:31:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234289AbhHEXbX (ORCPT ); Thu, 5 Aug 2021 19:31:23 -0400 Received: from mga02.intel.com ([134.134.136.20]:6542 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236808AbhHEXbW (ORCPT ); Thu, 5 Aug 2021 19:31:22 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10067"; a="201448365" X-IronPort-AV: E=Sophos;i="5.84,296,1620716400"; d="scan'208";a="201448365" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Aug 2021 16:31:07 -0700 X-IronPort-AV: E=Sophos;i="5.84,296,1620716400"; d="scan'208";a="481043884" Received: from rmgular-mobl2.amr.corp.intel.com (HELO skuppusw-desk1.amr.corp.intel.com) ([10.251.138.25]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Aug 2021 16:31:06 -0700 From: Kuppuswamy Sathyanarayanan To: Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, Jonathan Corbet , Peter Zijlstra , Andy Lutomirski Cc: "H . Peter Anvin" , Kuppuswamy Sathyanarayanan , Andi Kleen , Tony Luck , Andy Shevchenko , "Kirill A . Shutemov" , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, Kuppuswamy Sathyanarayanan Subject: [PATCH v3 0/5] Add TDX Guest Support (Debug support) Date: Thu, 5 Aug 2021 16:30:31 -0700 Message-Id: <20210805233036.2949674-1-sathyanarayanan.kuppuswamy@linux.intel.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi All, Intel's Trust Domain Extensions (TDX) protect guest VMs from malicious hosts and some physical attacks. Following patches adds tracepoint support for TDX Guest TDCALL requests and #VE exceptions. It also includes helper function to detect TD-DEBUG mode which will be used by patches in other TDX series to add TD-DEBUG mode specific features support. This series is the continuation of the following TDX guest related patches. [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 Also please note that this series alone is not necessarily fully functional. You need to apply all the above 4 patch series to get a fully functional TDX guest. Changes since v2: * Added taint flag support for TDX overrides. * Moved patch titled "x86/tdx: Add tdg_debug_enabled() interface" to the patch series which actually uses it. * Added support to override protected guest flags. Changes since v1: * Rebased on top of v5.14-rc1. Andi Kleen (2): Add taint flag for TDX overrides x86/tdx: Add option to override prot values Kuppuswamy Sathyanarayanan (2): x86/tdx: Add TDCALL tracepoint x86/tdx: Expose TDX Guest #VE count in /proc/interrupts Sean Christopherson (1): x86/tdx: Add #VE tracepoint .../admin-guide/kernel-parameters.txt | 8 + Documentation/admin-guide/tainted-kernels.rst | 7 +- arch/x86/include/asm/hardirq.h | 3 + arch/x86/include/asm/tdx.h | 2 + arch/x86/include/asm/trace/tdx.h | 158 ++++++++++++++++++ arch/x86/kernel/irq.c | 6 + arch/x86/kernel/tdx.c | 88 ++++++++-- arch/x86/kernel/traps.c | 2 + include/linux/panic.h | 3 +- kernel/panic.c | 1 + 10 files changed, 263 insertions(+), 15 deletions(-) create mode 100644 arch/x86/include/asm/trace/tdx.h -- 2.25.1