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=-0.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 08331C2BA15 for ; Fri, 3 Apr 2020 16:48:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C33162080C for ; Fri, 3 Apr 2020 16:48:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=vmware.com header.i=@vmware.com header.b="daN7DD5A" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404025AbgDCQso (ORCPT ); Fri, 3 Apr 2020 12:48:44 -0400 Received: from mail-dm6nam11on2074.outbound.protection.outlook.com ([40.107.223.74]:20827 "EHLO NAM11-DM6-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728095AbgDCQso (ORCPT ); Fri, 3 Apr 2020 12:48:44 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=PmiCaj7LC6mSGvTa7HUfAY+xudGxMuPyQlejH6U0G1NoGmXgxg1YSw6XPxWB45LZ/yUxhjGf4CSNioyy2YicEUb21g4+hJCcJM3PUkT9IVN4FR9SRxkLzE2/QZlKM6/bt/cQWd17kLS3S/BepQhj4SFWTO5YL3O0gF2AF8e97sUIjl8Jev3bip32psARUT66B3J2h+/HwD5yevGX2gPBP5Ve5kysXDsub8M4SQEfwFcpaeQnoD9SllmG6IqxiayJuNPIq9VoJbSkZpO0s51B/6pNEJ4GttMmAoi5MyYs+wKZ/DCPVgz3S8/RMXrgspevqzq6gvdSbXmnBtHf1EZmdA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=Y4rAZrJ1cZK3xCdo8NLdl5FJ4GiS7fh1ZCOvkqbTQ8w=; b=DouUkK1WrvYtyK4eHrmGetcJebneBYXeKtk00yrt9MZOrts+TLgudFZ2UhW+lCs3nSO24zVmKGHRU48+X2ggPeDulRsjggcePoyc+MQ06qvHbIMAq1OPevcF0yJhk6jTBjbaMZWxqMc/PXk8ehQyklvkRUYbiVTK/dmsHIjTRdfiQbLLdV3v+M3/adby5iiCMlP6GczRHTcN/l7ZCoiBJo99Utfc1RBfQNImH8/O3GMa9yJaaVGTNoZsTaoNuLCM5ZyYYs2Jx7cbgk0hKuxwZDAa/+iEfPzFHrfz3eIH3OlUa42isjLJJSWPL9wYVMjWI1oNiV1ZfiGc92Jh+WqTTA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=vmware.com; dmarc=pass action=none header.from=vmware.com; dkim=pass header.d=vmware.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=vmware.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=Y4rAZrJ1cZK3xCdo8NLdl5FJ4GiS7fh1ZCOvkqbTQ8w=; b=daN7DD5Aj6BLT7vvUtLDk7fPaI8WYj9bP5+y/OYuvoZTEGjrBWKir9WT9UfT2YVFDwCPRAhAd6BlrLucri+Zab7i0Q5DQTkFpyKk9tU/gvwiox5ZinsQGQDxZDUNZ7OjdAFQsSkBuykFdEX+/i8B15ceSsAeobC4nN2FV3LBLD8= Received: from BYAPR05MB4776.namprd05.prod.outlook.com (2603:10b6:a03:4a::18) by BYAPR05MB4149.namprd05.prod.outlook.com (2603:10b6:a02:92::29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2878.13; Fri, 3 Apr 2020 16:48:35 +0000 Received: from BYAPR05MB4776.namprd05.prod.outlook.com ([fe80::7c65:25af:faf7:5331]) by BYAPR05MB4776.namprd05.prod.outlook.com ([fe80::7c65:25af:faf7:5331%2]) with mapi id 15.20.2878.014; Fri, 3 Apr 2020 16:48:35 +0000 From: Nadav Amit To: Peter Zijlstra CC: Sean Christopherson , Jessica Yu , Rasmus Villemoes , Thomas Gleixner , LKML , x86 , "Kenneth R. Crudup" , Paolo Bonzini , Fenghua Yu , Xiaoyao Li , Thomas Hellstrom , Tony Luck , Steven Rostedt , Greg Kroah-Hartman , "jannh@google.com" , "keescook@chromium.org" Subject: Re: [patch 1/2] x86,module: Detect VMX modules and disable Split-Lock-Detect Thread-Topic: [patch 1/2] x86,module: Detect VMX modules and disable Split-Lock-Detect Thread-Index: AQHWCO7USTPzjZYgiU62wH3ltW4496hmfuWAgAD5WQCAAA0fAIAACysAgAAC1oCAAAPdgIAABDQAgAACIAA= Date: Fri, 3 Apr 2020 16:48:35 +0000 Message-ID: References: <20200402123258.895628824@linutronix.de> <20200402124205.242674296@linutronix.de> <20200403143459.GA30424@linux-8ccs> <20200403152158.GR20730@hirez.programming.kicks-ass.net> <20200403160156.GA2701@linux.intel.com> <20200403161205.GT20730@hirez.programming.kicks-ass.net> <20200403162555.GB2701@linux.intel.com> <20200403164058.GX20730@hirez.programming.kicks-ass.net> In-Reply-To: <20200403164058.GX20730@hirez.programming.kicks-ass.net> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=namit@vmware.com; x-originating-ip: [2601:647:4700:9b2:4cb3:3701:a401:9c] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: f84f1cf7-aa75-4edb-3c75-08d7d7eed9e9 x-ms-traffictypediagnostic: BYAPR05MB4149:|BYAPR05MB4149: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:612; x-forefront-prvs: 0362BF9FDB x-forefront-antispam-report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:BYAPR05MB4776.namprd05.prod.outlook.com;PTR:;CAT:NONE;SFTY:;SFS:(10009020)(4636009)(396003)(136003)(376002)(39860400002)(346002)(366004)(7416002)(81166006)(8676002)(478600001)(316002)(36756003)(86362001)(6512007)(81156014)(8936002)(2616005)(54906003)(6506007)(2906002)(53546011)(4326008)(66946007)(186003)(6916009)(66446008)(6486002)(71200400001)(33656002)(5660300002)(66476007)(76116006)(66556008)(64756008);DIR:OUT;SFP:1101; received-spf: None (protection.outlook.com: vmware.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: lp0PZGwzo5iwfliScncRAFZACMj1aNuz7qt+kpanu0l6jjHpmnDiHgwjdG+6prBk/KYkjef4wcQ0lCJSqCbzOllVwQh9DVz86jFIr7whxgNabKb8PiytKKLw43gTueUd9JT1pWuzOOshn45KmG1R5maV2ZHvsL/1pd7PHjH5KhlsmyP1YC0CRHa3jry65aJGngGvZq72FIc8f2xupUCfRSZjMYrl4YA093xenn+8xMzNUdvO4X45SNzCX0BYYwYXuj57yZUWtL0lTP9F6kyw4QIYBkQYuzHrHfV5YSzT80FPJDjmgbLa5TlTu51SCEGMg8dS8Zxdw2oH5tubA/xMZOzsQKXylVMBpb5IMduhDBHb0fTdDRiHipH2qPFqVgWiXZOlZAWsLcRp5U1uh2KFHjD5wdxcqTkYcRe6B9Cn7n1uLS5R0wtjp2SvS2Ptvp3F x-ms-exchange-antispam-messagedata: xwoNGRCdiU2fFt5NyhmhyfHz5DXFuZ1FqG9TGdkJENYzDWVY+uzrNWbQTcasFml/onVQ3CgT1A1VZto2CTWi5N48t7yw0YejcKJr0m5nj5/ogcfrhGHwOedEHmtuUcDcf9YOkR4yKDoagnkH/HL9bEkHEHpMLJQvhfi1MzWwK5LxYFRvI/yCG1jmvATfdA1um1C4lNxxoe/AsAVRTQFlfQ== Content-Type: text/plain; charset="utf-8" Content-ID: Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-OriginatorOrg: vmware.com X-MS-Exchange-CrossTenant-Network-Message-Id: f84f1cf7-aa75-4edb-3c75-08d7d7eed9e9 X-MS-Exchange-CrossTenant-originalarrivaltime: 03 Apr 2020 16:48:35.2275 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: b39138ca-3cee-4b4a-a4d6-cd83d9dd62f0 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: +k1Y5q3X0BIaW8FL4skOPnth/8fRU6l4MhVtJcsQDapEJIRcBr/Vkm9LfM3rwdIEJWyqfgVYXb/SPsnpAyZMUQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR05MB4149 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org PiBPbiBBcHIgMywgMjAyMCwgYXQgOTo0MCBBTSwgUGV0ZXIgWmlqbHN0cmEgPHBldGVyekBpbmZy YWRlYWQub3JnPiB3cm90ZToNCj4gDQo+IE9uIEZyaSwgQXByIDAzLCAyMDIwIGF0IDA5OjI1OjU1 QU0gLTA3MDAsIFNlYW4gQ2hyaXN0b3BoZXJzb24gd3JvdGU6DQo+PiBPbiBGcmksIEFwciAwMywg MjAyMCBhdCAwNjoxMjowNVBNICswMjAwLCBQZXRlciBaaWpsc3RyYSB3cm90ZToNCj4+PiBPbiBG cmksIEFwciAwMywgMjAyMCBhdCAwOTowMTo1NkFNIC0wNzAwLCBTZWFuIENocmlzdG9waGVyc29u IHdyb3RlOg0KPj4+PiBPbiBGcmksIEFwciAwMywgMjAyMCBhdCAwNToyMTo1OFBNICswMjAwLCBQ ZXRlciBaaWpsc3RyYSB3cm90ZToNCj4+Pj4+IE9uIEZyaSwgQXByIDAzLCAyMDIwIGF0IDA0OjM1 OjAwUE0gKzAyMDAsIEplc3NpY2EgWXUgd3JvdGU6DQo+Pj4gDQo+Pj4+Pj4gSSB3b25kZXIgaWYg aXQgd291bGQgbWFrZSBzZW5zZSB0aGVuIHRvIGxpbWl0IHRoZSB0ZXh0IHNjYW5zIHRvIGp1c3QN Cj4+Pj4+PiBvdXQtb2YtdHJlZSBtb2R1bGVzIChpLmUuLCBtaXNzaW5nIHRoZSBpbnRyZWUgbW9k aW5mbyBmbGFnKT8NCj4+Pj4+IA0KPj4+Pj4gSXQgd291bGQ7IGRpZG4ndCBrbm93IHRoZXJlIHdh cyBvbmUuDQo+Pj4+IA0KPj4+PiBSYXRoZXIgdGhhbiBzY2FubmluZyBtb2R1bGVzIGF0IGFsbCwg d2hhdCBhYm91dCBob29raW5nIG5hdGl2ZV93cml0ZV9jcjQoKQ0KPj4+PiB0byBraWxsIFNMRCBp ZiBDUjQuVk1YRSBpcyB0b2dnbGVkIG9uIGFuZCB0aGUgY2FsbGVyIGRpZG4ndCBpbmNyZW1lbnQg YQ0KPj4+PiAic2xkIHNhZmUiIGNvdW50ZXI/DQo+Pj4gDQo+Pj4gQW5kIHRoZW4geW91J3JlIGhv cGluZyB0aGF0IHRoZSBtb2R1bGUgdXNlcyB0aGF0IGFuZCBub3Q6DQo+Pj4gDQo+Pj4gIGFzbSB2 b2xhdGlsZSAoIm1vdiAlMCwgY3I0IiA6OiAiciIgKHZhbCkpOw0KPj4+IA0KPj4+IEkgdGhpbmsg SSBmZWVsIHNhZmVyIHdpdGggdGhlIHNjYW5uaW5nIHRvIGJlIGZhaXIuIEFsc28gd2l0aCB0aGUg aW50cmVlDQo+Pj4gaGludCBvbiwgd2UgY2FuIGV4dGVuZCB0aGUgc2Nhbm5pbmcgZm9yIG91dC1v Zi10cmVlIG1vZHVsZXMgZm9yIG1vcmUNCj4+PiBkb2RneSBjcmFwIHdlIHJlYWxseSBkb24ndCB3 YW50IG1vZHVsZXMgdG8gZG8sIGxpa2UgZm9yIGV4YW1wbGUgdGhlDQo+Pj4gYWJvdmUuDQo+PiAN Cj4+IFlhLCB0aGF0J3MgdGhlIGJpZyB1a25vd24uICBCdXQgd291bGRuJ3QgdGhleSdkIGFscmVh ZHkgYmUgYnJva2VuIGluIHRoZQ0KPj4gc2Vuc2UgdGhhdCB0aGV5J2QgY29ycnVwdCB0aGUgQ1I0 IHNoYWRvdz8gIEUuZy4gc2V0dGluZyBWTVhFIHdpdGhvdXQNCj4+IHVwZGF0aW5nIGNwdV90bGJz dGF0ZS5jcjQgd291bGQgcmVzdWx0IGluIGZ1dHVyZSBpbi1rZXJuZWwgd3JpdGVzIHRvIENSNA0K Pj4gYXR0ZW1wdGluZyB0byBjbGVhciBDUjQuVk1YRSBwb3N0LVZNWE9OLCB3aGljaCB3b3VsZCAj R1AuDQo+IA0KPiBTYWRseSB0aGUgQ1I0IHNoYWRvdyBpcyBleHBvcnRlZCwgc28gdGhleSBjYW4g YWN0dWFsbHkgZml4IHRoYXQgdXAgOi8NCg0KSSBkbyBub3QgdGhpbmsgdGhhdCBTZWFu4oCZcyBp ZGVhIHdvdWxkIHdvcmsgZm9yIFZNd2FyZS4NCg0K