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 1C23DC43603 for ; Tue, 17 Dec 2019 10:03:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EC3CF207FF for ; Tue, 17 Dec 2019 10:03:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727495AbfLQKDU (ORCPT ); Tue, 17 Dec 2019 05:03:20 -0500 Received: from eu-smtp-delivery-151.mimecast.com ([146.101.78.151]:52706 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727120AbfLQKDT (ORCPT ); Tue, 17 Dec 2019 05:03:19 -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-113-DJi9NBNYOi6lksLiOsDj3w-1; Tue, 17 Dec 2019 10:03:16 +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; Tue, 17 Dec 2019 10:03:15 +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; Tue, 17 Dec 2019 10:03:15 +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/vgCAAAOJwIAACIuAgAEIbNA= Date: Tue, 17 Dec 2019 10:03:15 +0000 Message-ID: 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> <053a199934844aef9745d7398494b5a0@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: DJi9NBNYOi6lksLiOsDj3w-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+IFNlbnQ6IDE2IERlY2VtYmVyIDIwMTkgMTg6MDYNCi4u DQo+IFRoaXMgd2hvbGUgZGlzY3Vzc2lvbiBpcyBhYm91dCB0aGUgZmFjdCB0aGF0IFBldGVyWiBp cyBzY2VwdGljYWwgdGhhdA0KPiBhY3R1YWwgeDg2IENQVXMgaGF2ZSBhcyBzdHJvbmcgYSBtZW1v cnkgbW9kZWwgYXMgdGhlIFNETSBzdWdnZXN0cywgYW5kDQo+IEknbSB0cnlpbmcgdG8gdW5kZXJz dGFuZCB0aGUgZXhhY3QgY29uY2Vybi4gIFRoaXMgbWF5IG9yIG1heSBub3QgYmUNCj4gZGlyZWN0 bHkgcmVsZXZhbnQgdG8gdGhlIGtlcm5lbC4gOikNCg0KVGhlIHg4NiBtZW1vcnkgbW9kZWwgaXMg cHJldHR5IHN0cm9uZy4NCkl0IGhhcyB0byBiZSB0byBzdXBwb3J0IGhpc3RvcmljIGNvZGUgLSBp bmNsdWRpbmcgc2VsZiBtb2RpZnlpbmcgY29kZS4NCkkgdGhpbmsgRE9TIGZyb20gMTk4MiBzaG91 bGQgc3RpbGwgYm9vdC4NCg0KRXZlbiBmb3IgU01QIHRoZXkgcHJvYmFibHkgY2FuJ3QgcmVsYXgg YW55dGhpbmcgZnJvbSB0aGUgb3JpZ2luYWwgaW1wbGVtZW50YXRpb25zLg0KKEV4Y2VwdCBjcHUg c3BlY2lmaWMga2VybmVsIGJpdHMgLSBzaW5jZSB0aGF0IGhhcyBhbGwgY2hhbmdlZCBzaW5jZSBz b21lIGR1YWwgNDg2IGJveGVzLikNCg0KQWN0dWFsbHkgdGhlIHdlYWtlc3QgeDg2IG1lbW9yeSBt b2RlbCB3YXMgdGhhdCBkZWZpbmVkIGluIHNvbWUgUC1wcm8NCmVyYSBJbnRlbCBkb2NzIHRoYXQg c2FpZCB0aGF0IElPUi9JT1cgd2VyZW4ndCBzZXF1ZW5jZWQgd2l0aCBtZW1vcnkgYWNjZXNzZXMu DQpGb3J0dW5hdGVseSBubyBjcHUgZXZlciBkaWQgdGhhdCByZW9yZGVyaW5nLCBhbmQgbm93IGl0 IGlzbid0IGFsbG93ZWQuDQoNCglEYXZpZA0KDQotDQpSZWdpc3RlcmVkIEFkZHJlc3MgTGFrZXNp ZGUsIEJyYW1sZXkgUm9hZCwgTW91bnQgRmFybSwgTWlsdG9uIEtleW5lcywgTUsxIDFQVCwgVUsN ClJlZ2lzdHJhdGlvbiBObzogMTM5NzM4NiAoV2FsZXMpDQo=