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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 14D03C433FE for ; Wed, 2 Feb 2022 22:20:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232280AbiBBWUc (ORCPT ); Wed, 2 Feb 2022 17:20:32 -0500 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.85.151]:36252 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230394AbiBBWUa (ORCPT ); Wed, 2 Feb 2022 17:20:30 -0500 Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id uk-mta-246-3uFb0Gx1Ohm3qFSiuXJfVw-1; Wed, 02 Feb 2022 22:20:28 +0000 X-MC-Unique: 3uFb0Gx1Ohm3qFSiuXJfVw-1 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) by AcuMS.aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) with Microsoft SMTP Server (TLS) id 15.0.1497.28; Wed, 2 Feb 2022 22:20:25 +0000 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.028; Wed, 2 Feb 2022 22:20:25 +0000 From: David Laight To: 'Miguel Ojeda' CC: Kees Cook , Jonathan Corbet , Linus Torvalds , Martin Uecker , Ingo Molnar , Rikard Falkeborn , Arnd Bergmann , "linux-doc@vger.kernel.org" , Tetsuo Handa , Andrew Morton , Andy Shevchenko , Nick Desaulniers , "Gustavo A. R. Silva" , "linux-kernel@vger.kernel.org" , "linux-hardening@vger.kernel.org" Subject: RE: [PATCH] linux/const.h: Explain how __is_constexpr() works Thread-Topic: [PATCH] linux/const.h: Explain how __is_constexpr() works Thread-Index: AQHYFuNHRL4oDGFcTkyEh79ubpGBJ6yAbZqwgABHZoCAACDEgA== Date: Wed, 2 Feb 2022 22:20:25 +0000 Message-ID: <6d75ee32e7c3415ebcfa12e61d26aa87@AcuMS.aculab.com> References: <20220131204357.1133674-1-keescook@chromium.org> <6641e01b86374ce197020d57c65ae3b3@AcuMS.aculab.com> In-Reply-To: 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-hardening@vger.kernel.org RnJvbTogTWlndWVsIE9qZWRhIDxtaWd1ZWwub2plZGEuc2FuZG9uaXNAZ21haWwuY29tPg0KPiBT ZW50OiAwMiBGZWJydWFyeSAyMDIyIDIwOjE0DQo+IFRvOiBEYXZpZCBMYWlnaHQNCj4gDQo+IE9u IFdlZCwgRmViIDIsIDIwMjIgYXQgNToxOSBQTSBEYXZpZCBMYWlnaHQgPERhdmlkLkxhaWdodEBh Y3VsYWIuY29tPiB3cm90ZToNCj4gPg0KPiA+IC0gVGhlIGNvbmRpdGlvbmFsIG9wZXJhdG9yICg/ OikgcmVxdWlyZXMgdGhhdCBib3RoIGV4cHJlc3Npb25zIGhhdmUgdGhlDQo+ID4gICB0aGUgc2Ft ZSB0eXBlIChhZnRlciBudW1lcmljIHByb21vdGlvbnMpLg0KPiANCj4gSSB0aGluayB5b3UgYXJl IHJlZmVycmluZyB0byB0aGUgYXJpdGhtZXRpYyB0eXBlcyBjYXNlLCBidXQgdGhhdCBvbmUNCj4g ZG9lcyBub3QgYXBwbHkgaGVyZS4NCg0KVGhlIHR5cGUgb2YgdGhlIHJlc3VsdCBkZXBlbmRzIG9u IHRoZSB0eXBlIG9mIHRoZSAybmQgYW5kIDNyZCBhcmd1bWVudHMuDQpOb3Qgb24gdGhlIHZhbHVl IG9mIHRoZSBmaXJzdCBvbmUuDQoNCj4gPiAtIElmIHRoZSBleHByZXNzaW9ucyBoYXZlIGRpc3Rp bmN0IG5vbi1OVUxMIHBvaW50ZXIgdHlwZXMgdGhlbiB0aGV5IGFyZSBib3RoDQo+ID4gICBjYXN0 IHRvICh2b2lkICopIGFuZCB0aGUgcmVzdWx0IGhhcyB0eXBlICd2b2lkIConLg0KPiANCj4gR0ND IGFuZCBDbGFuZyBnaXZlIGB2b2lkICpgIGZvciB0aGlzLCBidXQgc29tZXRoaW5nIGxpa2UgYGZs b2F0ICpgIGFuZA0KPiBgaW50ICpgIGRvIG5vdCBmaXQgdGhlIGNvbnN0cmFpbnMgb2YgdGhlIG9w ZXJhdG9yLg0KDQpDb21waWxpbmc6DQoNCiNkZWZpbmUgayh4KSAoc2l6ZW9mKCooMSA/IChmbG9h dCAqKTggOiAoaW50ICopOCkpKQ0KDQppbnQgZjEodm9pZCl7IHJldHVybiBrKDYpOyB9DQoNCmdp dmVzOg0KDQpmMToNCiAgICAgICAgbW92bCAgICAkMSwgJWVheA0KICAgICAgICByZXQNCg0KKHNl ZSBodHRwczovL2dvZGJvbHQub3JnL3ovZTFNdllZeEd6KQ0KDQpDaGFuZ2UgdG8gI2RlZmluZSBr KHgpIChzaXplb2YoKigxID8gKHZvaWQgKikoeCkgOiAoaW50ICopMCkpKQ0KYW5kIHlvdSBvbmx5 IGdldCA0IHdoZW4geCBpcyBhIGNvbXBpbGUtdGltZSBjb25zdGFudCAwLg0KDQpJdCBoYXMgbm90 aGluZyB0byB3aXRoIHRoZSBjb25kaXRpb24sIHRoZSBjb21waWxlciBpcyB0cnlpbmcgdG8gJ3Nv cnQgb3V0Jw0KYSBzdWl0YWJsZSByZXR1cm4gdHlwZS4NCg0KSSBzdXNwZWN0IHRoZSBtaXNtYXRj aGVkIHBvaW50ZXIgdHlwZXMgbWlnaHQgZXZlbiBiZSBhIGdjYyBleHRlbnNpb24uDQoNCglEYXZp ZA0KDQotDQpSZWdpc3RlcmVkIEFkZHJlc3MgTGFrZXNpZGUsIEJyYW1sZXkgUm9hZCwgTW91bnQg RmFybSwgTWlsdG9uIEtleW5lcywgTUsxIDFQVCwgVUsNClJlZ2lzdHJhdGlvbiBObzogMTM5NzM4 NiAoV2FsZXMpDQo=