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 30471C433ED for ; Mon, 19 Apr 2021 15:26:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 05B5161246 for ; Mon, 19 Apr 2021 15:26:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239405AbhDSP1L (ORCPT ); Mon, 19 Apr 2021 11:27:11 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.86.151]:39203 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238601AbhDSP1K (ORCPT ); Mon, 19 Apr 2021 11:27:10 -0400 Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-83-1fpuH_pNMbiwBnHi01lYDQ-1; Mon, 19 Apr 2021 16:26:37 +0100 X-MC-Unique: 1fpuH_pNMbiwBnHi01lYDQ-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 15.0.1497.2; Mon, 19 Apr 2021 16:26:36 +0100 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.015; Mon, 19 Apr 2021 16:26:36 +0100 From: David Laight To: 'Andy Lutomirski' , Thomas Gleixner CC: Kees Cook , Borislav Petkov , "Sami Tolvanen" , X86 ML , Josh Poimboeuf , Peter Zijlstra , "Nathan Chancellor" , Nick Desaulniers , Sedat Dilek , "linux-hardening@vger.kernel.org" , LKML , clang-built-linux Subject: RE: [PATCH 05/15] x86: Implement function_nocfi Thread-Topic: [PATCH 05/15] x86: Implement function_nocfi Thread-Index: AQHXM+diuSsNstP2FUia6sIzu9nmdKq7+HvQ Date: Mon, 19 Apr 2021 15:26:36 +0000 Message-ID: References: <20210416203844.3803177-1-samitolvanen@google.com> <20210416203844.3803177-6-samitolvanen@google.com> <20210416211855.GD22348@zn.tnic> <20210416220251.GE22348@zn.tnic> <202104161519.1D37B6D26@keescook> <202104161601.CFB2CCF84F@keescook> <877dl0sc2m.ffs@nanos.tec.linutronix.de> 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 RnJvbTogQW5keSBMdXRvbWlyc2tpDQo+IFNlbnQ6IDE4IEFwcmlsIDIwMjEgMDE6MTINCi4uDQo+ IFNsaWdodGx5IG1vcmUgY29tcGxpY2F0ZWQ6DQo+IA0KPiBzdHJ1Y3Qgb3BhcXVlX3N5bWJvbDsN Cj4gZXh0ZXJuIHN0cnVjdCBvcGFxdWVfc3ltYm9sIGVudHJ5X1NZU0NBTExfNjQ7DQo+IA0KPiBU aGUgb3BhcXVlX3N5bWJvbCB2YXJpYW50IGF2b2lkcyBhbnkgcG9zc2libGUgY29uZnVzaW9uIG92 ZXIgdGhlIHdlaXJkDQo+IHN0YXR1cyBvZiBhcnJheXMgaW4gQywgYW5kIGl0J3MgaGFyZCB0byBt aXN1c2UsIHNpbmNlIHN0cnVjdA0KPiBvcGFxdWVfc3ltYm9sIGlzIGFuIGluY29tcGxldGUgdHlw ZS4NCg0KTWF5YmU6DQoNCnMvb3BhcXVlX3N5bWJvbC9lbnRyeV9TWVNDQUxMXzY0Lw0KDQoJRGF2 aWQNCg0KLQ0KUmVnaXN0ZXJlZCBBZGRyZXNzIExha2VzaWRlLCBCcmFtbGV5IFJvYWQsIE1vdW50 IEZhcm0sIE1pbHRvbiBLZXluZXMsIE1LMSAxUFQsIFVLDQpSZWdpc3RyYXRpb24gTm86IDEzOTcz ODYgKFdhbGVzKQ0K