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 05E80C433E7 for ; Fri, 16 Oct 2020 08:13:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ADFD72080A for ; Fri, 16 Oct 2020 08:13:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2405007AbgJPINu (ORCPT ); Fri, 16 Oct 2020 04:13:50 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.86.151]:41618 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404939AbgJPINt (ORCPT ); Fri, 16 Oct 2020 04:13:49 -0400 Received: from AcuMS.aculab.com (156.67.243.126 [156.67.243.126]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-25-NRrZ346XOLelYSsRdn014w-1; Fri, 16 Oct 2020 09:13:45 +0100 X-MC-Unique: NRrZ346XOLelYSsRdn014w-1 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; Fri, 16 Oct 2020 09:13:44 +0100 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; Fri, 16 Oct 2020 09:13:44 +0100 From: David Laight To: 'Arvind Sankar' CC: Nick Desaulniers , Andrew Morton , Kees Cook , "Nathan Chancellor" , "clang-built-linux@googlegroups.com" , "linux-kernel@vger.kernel.org" Subject: RE: [PATCH] compiler.h: Clarify comment about the need for barrier_data() Thread-Topic: [PATCH] compiler.h: Clarify comment about the need for barrier_data() Thread-Index: AQHWox7rJ5hC7vlNqk+GpAb0LFktmKmZJEvQgAACJICAALXFQA== Date: Fri, 16 Oct 2020 08:13:44 +0000 Message-ID: <407e91d1d36d48faa8bbdfe4f51033ad@AcuMS.aculab.com> References: <20201015181340.653004-1-nivedita@alum.mit.edu> <72958fd25e33490181b0df9413ec08b4@AcuMS.aculab.com> <20201015220123.GA919128@rani.riverdale.lan> In-Reply-To: <20201015220123.GA919128@rani.riverdale.lan> Accept-Language: en-GB, 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 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=C51A453 smtp.mailfrom=david.laight@aculab.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogQXJ2aW5kIFNhbmthcg0KPiBTZW50OiAxNSBPY3RvYmVyIDIwMjAgMjM6MDENCiwsLA0K PiBJIHRoaW5rIGl0J3MgaGVscGZ1bCB0byBoYXZlIHRoZSBtb3JlIGRldGFpbGVkIGV4cGxhbmF0 aW9uIGFib3V0DQo+IHJlZ2lzdGVyIHZhcmlhYmxlcyAtLSBhdCBmaXJzdCBnbGFuY2UsIGl0J3Mg YSBiaXQgbXlzdGlmeWluZyBhcyB0byB3aHkNCj4gdGhlIGNvbXBpbGVyIHdvdWxkIHRoaW5rIHRo YXQgdGhlIGFzbSBjYW4ndCBhY2Nlc3MgdGhlIHN0YWNrLiBTcGlsbGluZw0KPiByZWdpc3RlcnMg dG8gdGhlIHN0YWNrIGlzIGFjdHVhbGx5IGFuIHVuZGVzaXJhYmxlIHNpZGUtZWZmZWN0IG9mIHRo ZQ0KPiB3b3JrYXJvdW5kLg0KDQpUaGF0IGlzIHRoZSB2ZXJ5IGJpdCB0aGF0IGp1c3QgY29uZnVz ZXMgdGhpbmdzLg0KVGhlIGRhdGEgdGhlIG1lbXplcm9fZXhwbGljdGl0KCkgaXMgdHJ5aW5nIHRv IGNsZWFyIGlzIChwcm9iYWJseSkNCm9uLXN0YWNrIGFscmVhZHkgLSBpdCB3b24ndCBiZSBpbiBy ZWdpc3RlcnMuDQoNCklmIGl0IHdlcmUgaW4gcmVnaXN0ZXJzIHlvdSB3b3VsZG4ndCBuZWVkIHRo ZSBtZW1zZXQoKS4NCg0KQWN0dWFsbHkgSSBzdXNwZWN0IHRoYXQgdGhlIG1lbXNldCgpIGlzIGlu bGluZWQgc28gdGhhdCBpcw0KanVzdCBhc3NpZ25zIHplcm9zIHRvIGFsbCB0aGUgdmFyaWFibGVz Lg0KVGhpcyB3aWxsIGJlIGRvbmUgdXNpbmcgJ3ZpcnR1YWwgcmVnaXN0ZXJzJyB0aGF0IGNhY2hl IHRoZQ0Kb24tc3RhY2sgdmFsdWUuDQpZb3UgdGhlbiBuZWVkIHRvIGRvIHNvbWV0aGluZyB0byBm b3JjZSB0aGUgaW5zdHJ1Y3Rpb25zIHRvIGZsdXNoDQp0aGUgJ3ZpcnR1YWwgcmVnaXN0ZXJzJyBi YWNrIHRvIHN0YWNrIHRvIGJlIGdlbmVyYXRlZC4NCg0KVGhlIGZ1bmRhbWVudGFsIHRoaW5nIGlz IHRoYXQgdGhlIGFkZHJlc3Mgb2YgYSBsb2NhbCAoYXV0byEpDQp2YXJpYWJsZSBtdXN0IGJlIHZp c2libGUgdG8gdGhlIGFzbSBzdGF0ZW1lbnQgZm9yIHRoZSBjb21waWxlcg0KdG8gbWFrZSB0aGUg Y29udGVudHMgb2YgdGhvc2UgdmFyaWFibGVzIHZpc2libGUuDQoNCkkgZXZlbiBzdXNwZWN0IHlv dSBtYXkgbmVlZCB0byBwYXNzIHRoZSBhZGRyZXNzIG9mIHRoZSBzdHJ1Y3R1cmUNCih0byBiZSB6 ZXJvZWQpIHRvIGFuIGFzbSBibG9jayBhdCB0aGUgdG9wIG9mIHRoZSBmdW5jdGlvbiBhcyB3ZWxs Lg0KT3RoZXJ3aXNlIHRoZSBjb21waWxlciBjb3VsZCBjaGFuZ2UgdGhlIHN0YWNrIG9mZnNldHMg d2hlcmUgdGhlDQpzdHJ1Y3R1cmUgaXMgc3RvcmVkLg0KQnV0IEkgZG9uJ3QgdGhpbmsgY29tcGls ZXJzIGRvIHRoYXQuDQoNCglEYXZpZA0KDQotDQpSZWdpc3RlcmVkIEFkZHJlc3MgTGFrZXNpZGUs IEJyYW1sZXkgUm9hZCwgTW91bnQgRmFybSwgTWlsdG9uIEtleW5lcywgTUsxIDFQVCwgVUsNClJl Z2lzdHJhdGlvbiBObzogMTM5NzM4NiAoV2FsZXMpDQo=