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=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 2DA0FC433DF for ; Tue, 25 Aug 2020 17:36:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 12D2A2076C for ; Tue, 25 Aug 2020 17:36:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726903AbgHYRgS (ORCPT ); Tue, 25 Aug 2020 13:36:18 -0400 Received: from mga03.intel.com ([134.134.136.65]:49398 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726864AbgHYRgA (ORCPT ); Tue, 25 Aug 2020 13:36:00 -0400 IronPort-SDR: 2TTSuPl76RP6A8avMTfGnfq1e21BsS70aNQEU1lxzNh3VC9N2J5EAQh1LNiw8Jlf8Mkk0V8SWc P09B0Gh5PBgg== X-IronPort-AV: E=McAfee;i="6000,8403,9723"; a="156156000" X-IronPort-AV: E=Sophos;i="5.76,353,1592895600"; d="scan'208";a="156156000" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Aug 2020 10:35:59 -0700 IronPort-SDR: i++aEhxC93hp5FRAZKq2sE51+wKkC4DoHR88XqEw37wTGCMIQbNkw82h/F1iyW67sMrfk/oib1 UsxXhbQr1FFw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.76,353,1592895600"; d="scan'208";a="280045164" Received: from unknown (HELO fmsmsx606.amr.corp.intel.com) ([10.18.84.216]) by fmsmga007.fm.intel.com with ESMTP; 25 Aug 2020 10:35:59 -0700 Received: from fmsmsx610.amr.corp.intel.com (10.18.126.90) by fmsmsx606.amr.corp.intel.com (10.18.126.86) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Tue, 25 Aug 2020 10:35:59 -0700 Received: from fmsmsx610.amr.corp.intel.com (10.18.126.90) by fmsmsx610.amr.corp.intel.com (10.18.126.90) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Tue, 25 Aug 2020 10:35:30 -0700 Received: from fmsmsx610.amr.corp.intel.com ([10.18.126.90]) by fmsmsx610.amr.corp.intel.com ([10.18.126.90]) with mapi id 15.01.1713.004; Tue, 25 Aug 2020 10:35:30 -0700 From: "Luck, Tony" To: Andy Lutomirski , "Christopherson, Sean J" CC: Andrew Cooper , Thomas Gleixner , LKML , X86 ML , Linus Torvalds , "Tom Lendacky" , Pu Wen , "Stephen Hemminger" , Sasha Levin , Dirk Hohndel , Jan Kiszka , Tony W Wang-oc , "H. Peter Anvin" , "Mallick, Asit K" , Gordon Tetlow , David Kaplan Subject: RE: TDX #VE in SYSCALL gap (was: [RFD] x86: Curing the exception and syscall trainwreck in hardware) Thread-Topic: TDX #VE in SYSCALL gap (was: [RFD] x86: Curing the exception and syscall trainwreck in hardware) Thread-Index: AQHWepnN5CwxwmBahk+tjye5jNDIMqlJf26A//+V8lKAAADkcA== Date: Tue, 25 Aug 2020 17:35:29 +0000 Message-ID: References: <875z98jkof.fsf@nanos.tec.linutronix.de> <3babf003-6854-e50a-34ca-c87ce4169c77@citrix.com> <20200825043959.GF15046@sjchrist-ice> <20200825171903.GA20660@sjchrist-ice> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-product: dlpe-windows dlp-reaction: no-action dlp-version: 11.5.1.3 x-originating-ip: [10.1.200.100] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org PiA+IE9yIG1hbGljaW91cyBoeXBlcnZpc29yIGFjdGlvbiwgYW5kIHRoYXQncyBhIHByb2JsZW0u DQo+ID4NCj4gPiBTdXBwb3NlIHRoZSBoeXBlcnZpc29yIHJlbWFwcyBhIEdQQSB1c2VkIGluIHRo ZSBTWVNDQUxMIGdhcCAoZS5nLiB0aGUNCj4gPiBhY3R1YWwgU1lTQ0FMTCB0ZXh0IG9yIHRoZSBm aXJzdCBtZW1vcnkgaXQgYWNjZXNzZXMgLS0gSSBkb24ndCBoYXZlIGENCj4gPiBURFggc3BlYyBz byBJIGRvbid0IGtub3cgdGhlIGRldGFpbHMpLg0KDQpJcyBpdCBmZWFzaWJsZSB0byBkZWZlbmQg YWdhaW5zdCBhIG1hbGljaW91cyAob3IgYnVnZ3kpIGh5cGVydmlzb3I/DQoNCk9idmlvdXNseSwg d2UgY2FuJ3QgbGVhdmUgaG9sZXMgdGhhdCBndWVzdHMgY2FuIGV4cGxvaXQuIEJ1dCB0aGUgaHlw ZXJ2aXNvcg0KY2FuIGNyYXNoIHRoZSBzeXN0ZW0gbm8gbWF0dGVyIGhvdyBjbGV2ZXIgVERYIGlz Lg0KDQotVG9ueQ0K