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 69F1DC433F5 for ; Thu, 10 Feb 2022 22:47:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344381AbiBJWrD (ORCPT ); Thu, 10 Feb 2022 17:47:03 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:35728 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345209AbiBJWrC (ORCPT ); Thu, 10 Feb 2022 17:47:02 -0500 Received: from eu-smtp-delivery-151.mimecast.com (eu-smtp-delivery-151.mimecast.com [185.58.86.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 861F45F46 for ; Thu, 10 Feb 2022 14:47:02 -0800 (PST) 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-320-tnvpk8ZBMl6vvx44NdPNoA-1; Thu, 10 Feb 2022 22:45:02 +0000 X-MC-Unique: tnvpk8ZBMl6vvx44NdPNoA-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; Thu, 10 Feb 2022 22:45:00 +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; Thu, 10 Feb 2022 22:45:00 +0000 From: David Laight To: 'Dave Hansen' , Rick Edgecombe , "x86@kernel.org" , "H . Peter Anvin" , Thomas Gleixner , Ingo Molnar , "linux-kernel@vger.kernel.org" , "linux-doc@vger.kernel.org" , "linux-mm@kvack.org" , "linux-arch@vger.kernel.org" , "linux-api@vger.kernel.org" , Arnd Bergmann , Andy Lutomirski , Balbir Singh , Borislav Petkov , Cyrill Gorcunov , Dave Hansen , "Eugene Syromiatnikov" , Florian Weimer , "H . J . Lu" , Jann Horn , Jonathan Corbet , Kees Cook , Mike Kravetz , Nadav Amit , Oleg Nesterov , Pavel Machek , Peter Zijlstra , Randy Dunlap , "Ravi V . Shankar" , Dave Martin , Weijiang Yang , "Kirill A . Shutemov" , "joao.moreira@intel.com" , John Allen , "kcc@google.com" , "eranian@google.com" CC: Yu-cheng Yu Subject: RE: [PATCH 20/35] mm: Update can_follow_write_pte() for shadow stack Thread-Topic: [PATCH 20/35] mm: Update can_follow_write_pte() for shadow stack Thread-Index: AQHYHgex3kDJpMh0kE6CJu25wcKQLKyNYu3Q Date: Thu, 10 Feb 2022 22:45:00 +0000 Message-ID: References: <20220130211838.8382-1-rick.p.edgecombe@intel.com> <20220130211838.8382-21-rick.p.edgecombe@intel.com> <37426b64-2139-dc24-c7be-f3cefa4f0dd9@intel.com> In-Reply-To: <37426b64-2139-dc24-c7be-f3cefa4f0dd9@intel.com> 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-api@vger.kernel.org RnJvbTogRGF2ZSBIYW5zZW4NCj4gU2VudDogMDkgRmVicnVhcnkgMjAyMiAyMjo1Mg0KPiANCj4g T24gMS8zMC8yMiAxMzoxOCwgUmljayBFZGdlY29tYmUgd3JvdGU6DQo+ID4gTGlrZSBhIHdyaXRh YmxlIGRhdGEgcGFnZSwgYSBzaGFkb3cgc3RhY2sgcGFnZSBpcyB3cml0YWJsZSwgYW5kIGJlY29t ZXMNCj4gPiByZWFkLW9ubHkgZHVyaW5nIGNvcHktb24td3JpdGUsIGJ1dCBpdCBpcyBhbHdheXMg ZGlydHkuDQo+IA0KPiBPbmUgb3RoZXIgdGhpbmcuLi4NCj4gDQo+IFRoZSBsYW5ndWFnZSBpbiB0 aGVzZSBjaGFuZ2Vsb2dzIGlzIGEgYml0IHNsb3BweS4gIEZvciBpbnN0YW5jZSwgd2hhdA0KPiBk b2VzICJhbHdheXMgZGlydHkiIG1lYW4gaGVyZT8gIHB0ZV9kaXJ0eSgpPyAgT3Igc3RyaWN0bHkg X1BBR0VfRElSVFk/DQo+IA0KPiBJbiBvdGhlciB3b3JkcywgbG9naWNhbGx5IGRpcnR5LCBvciBs aXRlcmFsbHkgImhhcyAqdGhlKiBkaXJ0eSBiaXQgc2V0Ij8NCg0KRG9lc24ndCBDT1cgaGF2ZSB0 byBzZXQgaXQgcmVhZG9ubHkgLSBzbyB0aGF0IHRoZSBhY2Nlc3MgZmF1bHRzLg0KQW5kIHRoZW4g c2V0IHRoZSBmYXVsdCBjb2RlIHNldCBpdCByZWFkb25seStkaXJ0eSAod2l0aG91dCB3cml0ZSkN CnRvIGFsbG93IHRoZSBzaGFkb3cgc3RhY2sgYWNjZXNzZXMgdG8gbm90LWZhdWx0Lg0KDQpPciBh bSBJIG1pcy1ndWVzc2luZyB3aGF0IHRoZSBkb2NzIGFjdHVhbGx5IHNheT8NCg0KCURhdmlkDQoN Ci0NClJlZ2lzdGVyZWQgQWRkcmVzcyBMYWtlc2lkZSwgQnJhbWxleSBSb2FkLCBNb3VudCBGYXJt LCBNaWx0b24gS2V5bmVzLCBNSzEgMVBULCBVSw0KUmVnaXN0cmF0aW9uIE5vOiAxMzk3Mzg2IChX YWxlcykNCg==