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=-0.8 required=3.0 tests=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 DBD00C43603 for ; Mon, 16 Dec 2019 17:45:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BD4E4206EC for ; Mon, 16 Dec 2019 17:45:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726620AbfLPRp0 (ORCPT ); Mon, 16 Dec 2019 12:45:26 -0500 Received: from eu-smtp-delivery-151.mimecast.com ([146.101.78.151]:43162 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725805AbfLPRp0 (ORCPT ); Mon, 16 Dec 2019 12:45:26 -0500 Received: from AcuMS.aculab.com (156.67.243.126 [156.67.243.126]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-43-acutJ5mMOdScnvq5_4WRig-1; Mon, 16 Dec 2019 17:45:23 +0000 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) by AcuMS.aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Mon, 16 Dec 2019 17:45:22 +0000 Received: from AcuMS.Aculab.com ([fe80::43c:695e:880f:8750]) by AcuMS.aculab.com ([fe80::43c:695e:880f:8750%12]) with mapi id 15.00.1347.000; Mon, 16 Dec 2019 17:45:22 +0000 From: David Laight To: 'Andy Lutomirski' CC: Peter Zijlstra , "Luck, Tony" , "Yu, Fenghua" , Ingo Molnar , "Thomas Gleixner" , Ingo Molnar , "Borislav Petkov" , H Peter Anvin , "Raj, Ashok" , "Shankar, Ravi V" , linux-kernel , x86 , "Will Deacon" Subject: RE: [PATCH v10 6/6] x86/split_lock: Enable split lock detection by kernel parameter Thread-Topic: [PATCH v10 6/6] x86/split_lock: Enable split lock detection by kernel parameter Thread-Index: AQHVsSQN6yBAo1s5f0Kws0hZvGpx8qe8iNtwgAB/vgCAAAOJwA== Date: Mon, 16 Dec 2019 17:45:22 +0000 Message-ID: <053a199934844aef9745d7398494b5a0@AcuMS.aculab.com> References: <20191121185303.GB199273@romley-ivt3.sc.intel.com> <20191121202508.GZ4097@hirez.programming.kicks-ass.net> <20191122092555.GA4097@hirez.programming.kicks-ass.net> <3908561D78D1C84285E8C5FCA982C28F7F4DD19F@ORSMSX115.amr.corp.intel.com> <20191122203105.GE2844@hirez.programming.kicks-ass.net> <20191211175202.GQ2827@hirez.programming.kicks-ass.net> <20191211223407.GT2844@hirez.programming.kicks-ass.net> <8d880a468c6242b9a951a83716ddeb07@AcuMS.aculab.com> In-Reply-To: Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 X-MC-Unique: acutJ5mMOdScnvq5_4WRig-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogQW5keSBMdXRvbWlyc2tpDQo+IFNlbnQ6IDE2IERlY2VtYmVyIDIwMTkgMTc6MjMNCi4u Lg0KPiBJJ20gdGFsa2luZyBzcGVjaWZpY2FsbHkgYWJvdXQgeDg2IGhlcmUsIHdoZXJlLCBmb3Ig ZXhhbXBsZSwgIlJlYWRzDQo+IGFyZSBub3QgcmVvcmRlcmVkIHdpdGggb3RoZXIgcmVhZHMiLiAg U28gUkVBRF9PTkNFICpkb2VzKiBoYXZlDQo+IHNlcXVlbmNpbmcgcmVxdWlyZW1lbnRzIG9uIHRo ZSBDUFVzLg0KPiANCj4gRmVlbCBmcmVlIHRvIHJlcGxhY2UgUkVBRF9PTkNFIHdpdGggTU9WIGlu IHlvdXIgaGVhZCBpZiB5b3UgbGlrZSA6KQ0KDQpJIGdvdCBhIGxpdHRsZSBjb25mdXNlZCBiZWNh dXNlIEkgdGhvdWdodCB5b3VyIHJlZmVyZW5jZSB0byBSRUFEX09OQ0UoKQ0Kd2FzIHJlbGV2YW50 Lg0KDQpTb21ldGltZXMgcmVtZW1iZXJpbmcgYWxsIHRoaXMgZ2V0cyBoYXJkLg0KVGhlIGRvY3Mg YWJvdXQgdGhlIGVmZmVjdHMgb2YgTEZFTkNFIGFuZCBNRkVOQ0UgZG9uJ3QgcmVhbGx5IGhlbHAN Cih0aGV5IG1ha2UgbXkgYnJhaW4gaHVydCkuDQpJJ20gcHJldHR5IHN1cmUgSSd2ZSBkZWNpZGVk IGluIHRoZSBwYXN0IHRoZXkgYXJlIGFsbW9zdCBuZXZlciBuZWVkZWQuDQoNClVzdWFsbHkgdGhl IG9yZGVyaW5nIG9mIHJlYWRzIGRvZXNuJ3QgaGVscCB5b3UuDQpJSVJDIElmIGxvY2F0aW9ucyAn YScgYW5kICdiJyBnZXQgY2hhbmdlZCBmcm9tIDAgdG8gMSBpdCBpcyBwZXJmZWN0bHkgcG9zc2li bGUNCmZvciBvbmUgY3B1IHRvIHNlZSBhPT0wLCBiPT0xIGFuZCBhbm90aGVyIGE9PTEsIGI9PTAg ZXZlbg0KdGhvdWdoIGJvdGggcmVhZCBhIHRoZW4gYi4NCihPbiBub24tYWxwaGEgdGhpcyBtYXkg cmVxdWlyZSBkaWZmZXJlbnQgY3B1cyB1cGRhdGUgYSBhbmQgYi4pDQoNCglEYXZpZA0KDQotDQpS ZWdpc3RlcmVkIEFkZHJlc3MgTGFrZXNpZGUsIEJyYW1sZXkgUm9hZCwgTW91bnQgRmFybSwgTWls dG9uIEtleW5lcywgTUsxIDFQVCwgVUsNClJlZ2lzdHJhdGlvbiBObzogMTM5NzM4NiAoV2FsZXMp DQo=