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=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 93BC9C4338F for ; Thu, 12 Aug 2021 17:18:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6FC2E60FD7 for ; Thu, 12 Aug 2021 17:18:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235451AbhHLRTH (ORCPT ); Thu, 12 Aug 2021 13:19:07 -0400 Received: from mga09.intel.com ([134.134.136.24]:28815 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229905AbhHLRTG (ORCPT ); Thu, 12 Aug 2021 13:19:06 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10074"; a="215395118" X-IronPort-AV: E=Sophos;i="5.84,316,1620716400"; d="scan'208";a="215395118" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Aug 2021 10:18:40 -0700 X-IronPort-AV: E=Sophos;i="5.84,316,1620716400"; d="scan'208";a="517535725" Received: from smachee-mobl.amr.corp.intel.com (HELO skuppusw-mobl5.amr.corp.intel.com) ([10.213.169.15]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Aug 2021 10:18:40 -0700 Subject: Re: [PATCH v5 04/12] x86/tdx: Add protected guest support for TDX guest To: Borislav Petkov Cc: Sean Christopherson , Dave Hansen , Thomas Gleixner , Ingo Molnar , Peter Zijlstra , Andy Lutomirski , Peter H Anvin , Tony Luck , Dan Williams , Andi Kleen , Kirill Shutemov , Kuppuswamy Sathyanarayanan , x86@kernel.org, linux-kernel@vger.kernel.org References: <20210804181329.2899708-1-sathyanarayanan.kuppuswamy@linux.intel.com> <20210804181329.2899708-5-sathyanarayanan.kuppuswamy@linux.intel.com> <9c576f24-e6de-f816-623d-408a4a2ae747@intel.com> <4f28fe6e-a8ce-e444-51db-d0eb564eca8f@linux.intel.com> From: "Kuppuswamy, Sathyanarayanan" Message-ID: <486afc0e-0396-e57b-63fe-31a8433bd603@linux.intel.com> Date: Thu, 12 Aug 2021 10:18:39 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 8/12/21 12:53 AM, Borislav Petkov wrote: >>> Given amd_prot_guest_has(), my guess is Boris intended intel_prot_guest_has()... > Yap, exactly. I can implement intel_prot_guest_has() in arch/x86/kernel/cpu/intel.c. And call tdx_prot_guest_has() from it. -- Sathyanarayanan Kuppuswamy Linux Kernel Developer