Received: by 2002:a05:6520:4211:b029:f4:110d:56bc with SMTP id o17csp1584491lkv; Wed, 19 May 2021 13:22:44 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwXxDI+Jqnea7kRhK1upGVQIJEEUJcPx4yaly3M3yWaQ2bPjpmcxgTNBdmL2DVR6WMnBlI9 X-Received: by 2002:a02:ca0d:: with SMTP id i13mr1071508jak.98.1621455763786; Wed, 19 May 2021 13:22:43 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1621455763; cv=none; d=google.com; s=arc-20160816; b=Yi7Xp7cVHMvRjnDFdt6XUog/F4AiaF0tbjJ3YgaHdtGFje7wTnF6zW3Ab809bIaLrw RcdGSgsZM4XlnEV7o8QR7m7ZvME7fsplkzb6YjQD5sCuCZk6P4nWQSMa/sC5zbixWnnH If4p3m4cM6Gs/xx8swjx1ADNIundR2HwlSNNpNuLg8Jy3b1eJ43j3u2xoS2xU6JWsWg2 5loEDklzPyQL2lRltTNjHSPDvOxgDDr0/tCHiPXS+JzZJ7uosMyrCZBhF9qBC0Dd6E6L ryc+DJanAALj6DJUamt6D503+L/+D0ANdp+/uKGPjJLbl7BWgHuR8rqBsBuIgFl7oD9/ XOKA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:content-language :in-reply-to:mime-version:user-agent:date:message-id:from:references :cc:to:subject:ironport-sdr:ironport-sdr; bh=MvGFpiElSUzN9SbyWhxtUBPqXDJIhIypKKwuC08+ZAE=; b=b6+vqyHH2NphFYkL+BOcGlygygk3muv8EU7vERGdP9AO4apEmI6GGOnb8vKVoUegr8 mkVLN8+PHtDHjpsbSaTUE3RktP9jWl1oD3E2mrSH/4YJbtjTSacOw7IZJLIejLYfB9EQ L0VdtJUM7ac5W+/pdaY+SWZq49ydHyDv7tNyfdI7qHavq2/UnYFVfqtzpjF9Orz1XTQM 4/6J0DD3MV6jQT+BT+5CKyFX+3QPK81AuQZdjBcSDDOvOGs6zWJuRDBF1QgRCs/mJ3KE RrF8YbkVauv3abGxDkWYx3HyiOlwLPiQM90VKgXXn/6/TzND/htZrROeR1ietwULfBw9 17dw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id y7si401400jap.36.2021.05.19.13.22.31; Wed, 19 May 2021 13:22:43 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229505AbhESTOs (ORCPT + 99 others); Wed, 19 May 2021 15:14:48 -0400 Received: from mga12.intel.com ([192.55.52.136]:33088 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230499AbhESTOq (ORCPT ); Wed, 19 May 2021 15:14:46 -0400 IronPort-SDR: OZy/X+vYvYjAtEW80DIRDK0pHUi9o82PRb+I1HIuJ5mTGFndpQJaSyVBTCEgRBTbK8pl/7awZe /KrHe73TZhMg== X-IronPort-AV: E=McAfee;i="6200,9189,9989"; a="180659959" X-IronPort-AV: E=Sophos;i="5.82,313,1613462400"; d="scan'208";a="180659959" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 May 2021 12:13:15 -0700 IronPort-SDR: Ae8dI07kVOsRIiZ4vXjpax5QkYTX/uekLWZMhn+5AOM+9TRVqtUhH5PIYMFGmAbT0BgCnxHDLy WF0DVJJhx7bQ== X-IronPort-AV: E=Sophos;i="5.82,313,1613462400"; d="scan'208";a="411861113" Received: from ccheung-mobl.amr.corp.intel.com (HELO skuppusw-mobl5.amr.corp.intel.com) ([10.212.97.108]) by orsmga002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 May 2021 12:13:14 -0700 Subject: Re: [RFC v2-fix-v1 1/1] x86/tdx: Add __tdx_module_call() and __tdx_hypercall() helper functions To: Dave Hansen , Peter Zijlstra , Andy Lutomirski Cc: Tony Luck , Andi Kleen , Kirill Shutemov , Kuppuswamy Sathyanarayanan , Dan Williams , Raj Ashok , Sean Christopherson , linux-kernel@vger.kernel.org References: <3a7c0bba-cc43-e4ba-f7fe-43c8627c2fc2@intel.com> <20210519055842.2048957-1-sathyanarayanan.kuppuswamy@linux.intel.com> <568d2929-f366-e3be-96f9-0bfa91991ef2@intel.com> From: "Kuppuswamy, Sathyanarayanan" Message-ID: <02e7b229-4b6f-c1c7-bb63-48e5e9eca5db@linux.intel.com> Date: Wed, 19 May 2021 12:13:11 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: <568d2929-f366-e3be-96f9-0bfa91991ef2@intel.com> 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 5/19/21 8:31 AM, Dave Hansen wrote: > Was this "older compiler" argument really the reason? It is a speculation. I haven't tried to reproduce it with old compiler. So I have removed that point. -- Sathyanarayanan Kuppuswamy Linux Kernel Developer