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=-0.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 81556C33CAC for ; Thu, 6 Feb 2020 16:27:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5EBEF214AF for ; Thu, 6 Feb 2020 16:27:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727835AbgBFQ1w (ORCPT ); Thu, 6 Feb 2020 11:27:52 -0500 Received: from eu-smtp-delivery-151.mimecast.com ([146.101.78.151]:36737 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727358AbgBFQ1w (ORCPT ); Thu, 6 Feb 2020 11:27:52 -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-185-_Inpmhi_MReCPYBTeRnDtw-1; Thu, 06 Feb 2020 16:27:47 +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; Thu, 6 Feb 2020 16:27:46 +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; Thu, 6 Feb 2020 16:27:46 +0000 From: David Laight To: 'Jann Horn' , Kees Cook CC: Kristen Carlson Accardi , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H . Peter Anvin" , Arjan van de Ven , Rick Edgecombe , "the arch/x86 maintainers" , kernel list , Kernel Hardening Subject: RE: [RFC PATCH 06/11] x86: make sure _etext includes function sections Thread-Topic: [RFC PATCH 06/11] x86: make sure _etext includes function sections Thread-Index: AQHV3O+Uub3eyEmx20OwpNUdqmwARKgOWIJQ Date: Thu, 6 Feb 2020 16:27:46 +0000 Message-ID: <9293be85241d49c182e614ffd7186bca@AcuMS.aculab.com> References: <20200205223950.1212394-1-kristen@linux.intel.com> <20200205223950.1212394-7-kristen@linux.intel.com> <202002060408.84005CEFFD@keescook> 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: _Inpmhi_MReCPYBTeRnDtw-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com 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 RnJvbTogSmFubiBIb3JuDQo+IFNlbnQ6IDA2IEZlYnJ1YXJ5IDIwMjAgMTM6MTYNCi4uLg0KPiA+ IEkgY2Fubm90IGZpbmQgZXZpZGVuY2UgZm9yDQo+ID4gd2hhdCBmdW5jdGlvbiBzdGFydCBhbGln bm1lbnQgc2hvdWxkIGJlLg0KPiANCj4gVGhlcmUgaXMgbm8gYXJjaGl0ZWN0dXJhbGx5IHJlcXVp cmVkIGFsaWdubWVudCBmb3IgZnVuY3Rpb25zLCBidXQNCj4gSW50ZWwncyBPcHRpbWl6YXRpb24g TWFudWFsDQo+ICg8aHR0cHM6Ly93d3cuaW50ZWwuY29tL2NvbnRlbnQvZGFtL3d3dy9wdWJsaWMv dXMvZW4vZG9jdW1lbnRzL21hbnVhbHMvNjQtaWEtMzItYXJjaGl0ZWN0dXJlcy0NCj4gb3B0aW1p emF0aW9uLW1hbnVhbC5wZGY+KQ0KPiByZWNvbW1lbmRzIGluIHNlY3Rpb24gMy40LjEuNSwgIkNv ZGUgQWxpZ25tZW50IjoNCj4gDQo+IHwgQXNzZW1ibHkvQ29tcGlsZXIgQ29kaW5nIFJ1bGUgMTIu IChNIGltcGFjdCwgSCBnZW5lcmFsaXR5KQ0KPiB8IEFsbCBicmFuY2ggdGFyZ2V0cyBzaG91bGQg YmUgMTYtYnl0ZSBhbGlnbmVkLg0KPiANCj4gQUZBSUsgdGhpcyBpcyByZWNvbW1lbmRlZCBiZWNh dXNlLCBhcyBkb2N1bWVudGVkIGluIHNlY3Rpb24gMi4zLjIuMSwNCj4gIkxlZ2FjeSBEZWNvZGUg UGlwZWxpbmUiIChkZXNjcmliaW5nIHRoZSBmcm9udGVuZCBvZiBTYW5keSBCcmlkZ2UsIGFuZA0K PiB1c2VkIGFzIHRoZSBiYXNlIGZvciBuZXdlciBtaWNyb2FyY2hpdGVjdHVyZXMpOg0KPiANCj4g fCBBbiBpbnN0cnVjdGlvbiBmZXRjaCBpcyBhIDE2LWJ5dGUgYWxpZ25lZCBsb29rdXAgdGhyb3Vn aCB0aGUgSVRMQg0KPiBhbmQgaW50byB0aGUgaW5zdHJ1Y3Rpb24gY2FjaGUuDQo+IHwgVGhlIGlu c3RydWN0aW9uIGNhY2hlIGNhbiBkZWxpdmVyIGV2ZXJ5IGN5Y2xlIDE2IGJ5dGVzIHRvIHRoZQ0K PiBpbnN0cnVjdGlvbiBwcmUtZGVjb2Rlci4NCj4gDQo+IEFGQUlLIHRoaXMgbWVhbnMgdGhhdCBp ZiBhIGJyYW5jaCBlbmRzIGNsb3NlIHRvIHRoZSBlbmQgb2YgYSAxNi1ieXRlDQo+IGJsb2NrLCB0 aGUgZnJvbnRlbmQgaXMgbGVzcyBlZmZpY2llbnQgYmVjYXVzZSBpdCBtYXkgaGF2ZSB0byBydW4g dHdvDQo+IGluc3RydWN0aW9uIGZldGNoZXMgYmVmb3JlIHRoZSBmaXJzdCBpbnN0cnVjdGlvbiBj YW4gZXZlbiBiZSBkZWNvZGVkLg0KDQpTZWUgYWxzbyBUaGUgbWljcm9hcmNoaXRlY3R1cmUgb2Yg SW50ZWwsIEFNRCBhbmQgVklBIENQVXMgZnJvbSB3d3cuYWduZXIub3JnL29wdGltaXplIA0KDQpN eSBzdXNwaWNpb24gaXMgdGhhdCByZWR1Y2luZyB0aGUgY2FjaGUgc2l6ZSAoc28gbW9yZSBjb2Rl IGZpdHMgaW4pDQp3aWxsIGFsbW9zdCBhbHdheXMgYmUgYSB3aW4gb3ZlciBhbGlnbmluZyBicmFu Y2ggdGFyZ2V0cyBhbmQgZW50cnkgcG9pbnRzLg0KSWYgdGhlIGFsaWdubWVudCBvZiBhIGZ1bmN0 aW9uIG1hdHRlcnMgdGhlbiB0aGVyZSBhcmUgcHJvYmFibHkgb3RoZXINCmNoYW5nZXMgdG8gdGhh dCBiaXQgb2YgY29kZSB0aGF0IHdpbGwgZ2l2ZSBhIGxhcmdlciBiZW5lZml0Lg0KDQoJRGF2aWQN Cg0KLQ0KUmVnaXN0ZXJlZCBBZGRyZXNzIExha2VzaWRlLCBCcmFtbGV5IFJvYWQsIE1vdW50IEZh cm0sIE1pbHRvbiBLZXluZXMsIE1LMSAxUFQsIFVLDQpSZWdpc3RyYXRpb24gTm86IDEzOTczODYg KFdhbGVzKQ0K