Received: by 2002:ac0:a594:0:0:0:0:0 with SMTP id m20-v6csp4776226imm; Fri, 18 May 2018 10:26:31 -0700 (PDT) X-Google-Smtp-Source: AB8JxZpeHMGNkrAGOKQ805A6C4VMECfgbJiT7ELaXIQjW2FLP7TKjIJ6ekvj3q7DZiNhgtHj+okO X-Received: by 2002:a65:661a:: with SMTP id w26-v6mr8205063pgv.151.1526664391329; Fri, 18 May 2018 10:26:31 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1526664391; cv=none; d=google.com; s=arc-20160816; b=v6V+f85xnLX1+lIBq0gF4QyjAzJ4YC0MJUovI8Pjx8WH1US7PS7Kpl4KlvPSZN4z00 4oN9KkqPZCYHyOgHYGXbbLWMGb2uuDzfxIJ9nKMXxg2FPNi6/cpmkcwVHL7pyiJXShy2 wGaz3yt2HndxxP/eEoipbmd6vFPZpU2A8o6R5MqTYj65F5hYoglbudUBYiy0A6rIo4rK qra6N++isz8QCsuk+dS/wG1M3pDPOBvieHu0XgV2oBkbz8KyEqBSEenYluVL8mJuPfx3 PwOw+IH4mRQuBR6ohYpCUd8tC6FYWTLqO09pwnWMiM/KYaDWX8PGXN+xqx1HqCpAainC EFew== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:content-transfer-encoding :content-id:spamdiagnosticmetadata:spamdiagnosticoutput :content-language:accept-language:in-reply-to:references:message-id :date:thread-index:thread-topic:subject:cc:to:from:dkim-signature :arc-authentication-results; bh=rwulCKrS2iCI8/qxZU6uO07MLeekWEoBMP0pZU9fvmA=; b=kS2X4MMimpN2+QNmSfUvwfS9+jJIeYU7QuMzMB2/VJTgDLmlbvrffoB8UhqM5wJOkf IvlcVdUM/T0kzend9kF1CdqsIx/+IfH8x6bkKwSSVzD4+BDCPN0kSN6Ya1emjCXqt66h u0yPPcvh72i7uQQHk/XLvhbSw//bbH3Cb0gJwU96Ykn4wzltIyUZsYPKEOpEzxtl0Dd9 k9msMUiHmV1JPhQEqNHaaKd2KgahZohcdvzr38CuWAWlG20ZsQO3eSBJP+eZZEaoweiF zi6HglYHL4/CPPhlppw9na7V+M+9hEPAzcmcgUlI/pfWhUxqK5G5KQh5y5sXV6ERWL2W WPpQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@onevmw.onmicrosoft.com header.s=selector1-vmware-com header.b=j3NxV7Vf; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id 5-v6si7914356plc.203.2018.05.18.10.26.16; Fri, 18 May 2018 10:26:31 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@onevmw.onmicrosoft.com header.s=selector1-vmware-com header.b=j3NxV7Vf; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751571AbeERRYa (ORCPT + 99 others); Fri, 18 May 2018 13:24:30 -0400 Received: from mail-sn1nam02on0084.outbound.protection.outlook.com ([104.47.36.84]:2304 "EHLO NAM02-SN1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750957AbeERRY3 (ORCPT ); Fri, 18 May 2018 13:24:29 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=onevmw.onmicrosoft.com; s=selector1-vmware-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=rwulCKrS2iCI8/qxZU6uO07MLeekWEoBMP0pZU9fvmA=; b=j3NxV7VfMmbpdBdq3t3hrUQtM/RtbQxQPswzGmmdnRi4FGLSD+pjoKJXkh5yDbhUL+FLIKZscoUI921NxA4w7XMUr00KYn3Ep1lPx33K5Zwv2f8unijlHuzVZoUjjmdi5FLpBv1SW6tPrXrMpu3hGosVPbDYfX7QOHZ/BexCuzc= Received: from SN2PR05MB2654.namprd05.prod.outlook.com (10.166.212.137) by SN2PR05MB2430.namprd05.prod.outlook.com (10.166.212.149) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.776.4; Fri, 18 May 2018 17:24:27 +0000 Received: from SN2PR05MB2654.namprd05.prod.outlook.com ([fe80::dcb:7409:11fc:2327]) by SN2PR05MB2654.namprd05.prod.outlook.com ([fe80::dcb:7409:11fc:2327%3]) with mapi id 15.20.0797.007; Fri, 18 May 2018 17:24:27 +0000 From: Nadav Amit To: Linus Torvalds CC: Peter Zijlstra , Linux Kernel Mailing List , the arch/x86 maintainers , Thomas Gleixner , Ingo Molnar , Peter Anvin , Josh Poimboeuf Subject: Re: [PATCH 2/6] x86: bug: prevent gcc distortions Thread-Topic: [PATCH 2/6] x86: bug: prevent gcc distortions Thread-Index: AQHT7jbL50o+w3m6PkeKHm2HX6GyP6Q1H7KAgACNMgCAABDSAA== Date: Fri, 18 May 2018 17:24:27 +0000 Message-ID: <6DB0E0C2-CCD2-4FCE-BD8B-5E340E308FF7@vmware.com> References: <20180517161402.78089-1-namit@vmware.com> <20180517161402.78089-3-namit@vmware.com> <20180518075853.GD12217@hirez.programming.kicks-ass.net> In-Reply-To: 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: [208.91.2.2] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;SN2PR05MB2430;7:irGpEoEhqeLjj8EAZndbf3bWOKL+qkacEFBcJB5RvybNiAwj/TZ9e8mYo4arNn6i6MYNu5XaMp2oG7JQNOwMWLnLknigN3F2FNyFn+Ethk5H92pV/padUkzVie+izzqL4GUjWp/BL1dFmc6fVsHDRaCVOs3dMRtsciN9Gtu8Br9J4YnOAyDgqT1VTxtj8F1oR4CeVKOZvUytzpAQeZP60ZJ4AC8m1Xq32Dq/UNmKW2kvSx4fAH0pXbpC4Qd9NnzB;20:g/Yq/7XEwYDGx6Lmyv0iHkd2GRz4XsQkpyCXj5o29FvjLuuyLWLnI4jkvAQ+PExAoKbgkHmEXkDMUwbJXJqifG6Cn3ZoFhCKA7o5aUGiJDf457txNZCeAMiSfxcfj/HzymgBOzrr9uOC1LPuY6BE4KmOB6Al8/FbVpY91EfVSPs= x-ms-exchange-antispam-srfa-diagnostics: SOS; x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(5600026)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603328)(7153060)(7193020);SRVR:SN2PR05MB2430; x-ms-traffictypediagnostic: SN2PR05MB2430: x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:; x-ms-exchange-senderadcheck: 1 x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(8211001083)(6040522)(2401047)(8121501046)(5005006)(3231254)(944501410)(52105095)(3002001)(93006095)(93001095)(10201501046)(149027)(150027)(6041310)(20161123562045)(20161123564045)(20161123560045)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123558120)(6072148)(201708071742011)(7699016);SRVR:SN2PR05MB2430;BCL:0;PCL:0;RULEID:;SRVR:SN2PR05MB2430; x-forefront-prvs: 0676F530A9 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(346002)(39860400002)(376002)(39380400002)(396003)(366004)(199004)(189003)(54094003)(105586002)(186003)(68736007)(106356001)(3280700002)(6436002)(11346002)(446003)(3660700001)(25786009)(14454004)(26005)(486006)(102836004)(6486002)(476003)(2616005)(2900100001)(6512007)(76176011)(66066001)(93886005)(478600001)(86362001)(3846002)(305945005)(6116002)(2906002)(97736004)(4326008)(99286004)(6246003)(33656002)(53936002)(54906003)(316002)(5250100002)(6916009)(53546011)(8936002)(6506007)(229853002)(81166006)(82746002)(81156014)(8676002)(7736002)(36756003)(83716003)(5660300001);DIR:OUT;SFP:1101;SCL:1;SRVR:SN2PR05MB2430;H:SN2PR05MB2654.namprd05.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: vmware.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: O6YRJ3Khc90mDQaw8eoHS/NcJ5rmL7l+uCSDszioZyIuXTSePtZtJMOCYPcy4drBCGWG+Ea2X91xKeUdNXtGXkVyowTykJTTBoi47+ahfhvkzQZjIXjfOhCt7KbyG/fYxuuvIR4O9BkxaaMSX0WTBExD+YENMDSn7KL3hPh/f1ce7RHgFSshhCNfynQut5AZ spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="utf-8" Content-ID: <76F269CE351B7A46961F46628903A64F@namprd05.prod.outlook.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-MS-Office365-Filtering-Correlation-Id: 1f1f18a1-c1a2-46ad-d9f8-08d5bce43543 X-OriginatorOrg: vmware.com X-MS-Exchange-CrossTenant-Network-Message-Id: 1f1f18a1-c1a2-46ad-d9f8-08d5bce43543 X-MS-Exchange-CrossTenant-originalarrivaltime: 18 May 2018 17:24:27.4060 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: b39138ca-3cee-4b4a-a4d6-cd83d9dd62f0 X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN2PR05MB2430 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org TGludXMgVG9ydmFsZHMgPHRvcnZhbGRzQGxpbnV4LWZvdW5kYXRpb24ub3JnPiB3cm90ZToNCg0K PiBPbiBGcmksIE1heSAxOCwgMjAxOCBhdCAxMjo1OSBBTSBQZXRlciBaaWpsc3RyYSA8cGV0ZXJ6 QGluZnJhZGVhZC5vcmc+DQo+IHdyb3RlOg0KPiANCj4+IFRoaXMgaXMgYW4gYXdlc29tZSBoYWNr LCBidXQgaXMgdGhlcmUgcmVhbGx5IG5vdGhpbmcgd2UgY2FuIGRvIHRvIG1ha2UNCj4+IGl0IG1v cmUgcmVhZGFibGU/IEVzcCwgdGhhdCBnbG9iYWwgYXNtIGRvaW5nIHRoZSBtYWNybyBkZWZpbml0 aW9uIGlzIGENCj4+IHBhaW4gdG8gcmVhZC4NCj4gDQo+IEkgYWN0dWFsbHkgZmluZCB0aGF0IG1h Y3JvIHRvIGJlICptb3JlKiBsZWdpYmxlIHRoYW4gd2hhdCB3ZSBkbyBub3csDQo+IGFsdGhvdWdo IEknbSBub3QgZW5hbW9yZWQgd2l0aCB0aGUgcHNldWRvLW9wZXJhdGlvbiBuYW1lICgiX19CVUdf RkxBR1MiKS4NCj4gDQo+IFRoYXQgc2FpZCwgdGhlIEMgaGVhZGVyIGNvZGUgaXRzZWxmIEkgZG9u J3QgbG92ZS4NCj4gDQo+IEkgd29uZGVyIGlmIHdlIHNob3VsZCBqdXN0IGludHJvZHVjZSBhIG5l dyBhc3NlbWJsZXIgaGVhZGVyIGZpbGUsIGFuZCBnZXQNCj4gaXQgaW5jbHVkZWQgd2hlbiBwcm9j ZXNzaW5nIGNvbXBpbGVyLWdlbmVyYXRlZCBhc20uIFdlIGFscmVhZHkgZG8gdGhhdCBmb3INCj4g b3VyIF9yZWFsXyAqLlMgZmlsZXMsIHdpdGggYSBudW1iZXIgb2Ygb3VyIGhlYWRlciBmaWxlcyBo YXZpbmcgY29uc3RhbnRzDQo+IGFuZCBjb2RlIGZvciB0aGUgYXNtIGNhc2UgdG9vLCBub3QganVz dCBDLg0KPiANCj4gQnV0IHdlIGNvdWxkIGhhdmUgYW4gPGFzbS9hc20tbWFjcm8uaD4gaGVhZGVy IGZpbGUgdGhhdCBoYXMgdGhlc2Uga2luZHMgb2YNCj4gbWFjcm9zIChvciAicHNldWRvLWluc3Ry dWN0aW9ucyIpIGZvciBhc3NlbWJseSBsYW5ndWFnZSBjYXNlcywgYW5kIHRoZW4gd2UNCj4gY291 bGQganVzdCByZWx5IG9uIHRoZW0gaW4gaW5saW5lIGFzbS4NCg0KV2lsbCBpdCBiZSBvayBqdXN0 IHRvIHVzZSBhIGdsb2JhbCBpbmxpbmUgYXNtIHRvIHNldCBhbiDigJwuaW5jbHVkZeKAnSBkaXJl Y3RpdmUNCnRoYXQgZ2FzIHdvdWxkIGxhdGVyIHByb2Nlc3M/IChJIGNhbiBwcm9iYWJseSB3cmFw IGl0IGluIGEgQyBtYWNybyBzbyBpdA0Kd29u4oCZdCBiZSB0b28gZGlzZ3VzdGluZykNCg0K