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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 68F2AC433FE for ; Tue, 4 Oct 2022 09:58:00 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id D4DFA6B0072; Tue, 4 Oct 2022 05:57:59 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id CD71B6B0073; Tue, 4 Oct 2022 05:57:59 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B296C6B0074; Tue, 4 Oct 2022 05:57:59 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id 99AC26B0072 for ; Tue, 4 Oct 2022 05:57:59 -0400 (EDT) Received: from smtpin01.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay04.hostedemail.com (Postfix) with ESMTP id 4C1221A0A72 for ; Tue, 4 Oct 2022 09:57:59 +0000 (UTC) X-FDA: 79982815878.01.E2E64B7 Received: from eu-smtp-delivery-151.mimecast.com (eu-smtp-delivery-151.mimecast.com [185.58.85.151]) by imf03.hostedemail.com (Postfix) with ESMTP id A472E20009 for ; Tue, 4 Oct 2022 09:57:58 +0000 (UTC) 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-228-I6jkKZ2OO_aSqVMjuCOGMA-1; Tue, 04 Oct 2022 10:57:56 +0100 X-MC-Unique: I6jkKZ2OO_aSqVMjuCOGMA-1 Received: from AcuMS.Aculab.com (10.202.163.4) by AcuMS.aculab.com (10.202.163.4) with Microsoft SMTP Server (TLS) id 15.0.1497.38; Tue, 4 Oct 2022 10:57:48 +0100 Received: from AcuMS.Aculab.com ([::1]) by AcuMS.aculab.com ([::1]) with mapi id 15.00.1497.040; Tue, 4 Oct 2022 10:57:48 +0100 From: David Laight To: 'Kees Cook' , Jann Horn CC: 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" , Jonathan Corbet , Mike Kravetz , Nadav Amit , Oleg Nesterov , "Pavel Machek" , Peter Zijlstra , Randy Dunlap , "Ravi V . Shankar" , Weijiang Yang , "Kirill A . Shutemov" , "joao.moreira@intel.com" , John Allen , "kcc@google.com" , "eranian@google.com" , "rppt@kernel.org" , "jamorris@linux.microsoft.com" , "dethoma@microsoft.com" Subject: RE: [PATCH v2 00/39] Shadowstacks for userspace Thread-Topic: [PATCH v2 00/39] Shadowstacks for userspace Thread-Index: AQHY165UjpEHDRdyM0abW5Nx06znV639/yBQ Date: Tue, 4 Oct 2022 09:57:48 +0000 Message-ID: <752d296b68f04c2282bd898cf7ec3f0f@AcuMS.aculab.com> References: <20220929222936.14584-1-rick.p.edgecombe@intel.com> <202210030946.CB90B94C11@keescook> <202210032158.CE0941C4D@keescook> In-Reply-To: <202210032158.CE0941C4D@keescook> 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 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 ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1664877478; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=GGaJcA60e4t1d9NkSaTAwFyzVU4MgVXIpI2JujAwPXI=; b=iLspQTS+/4f59+ZZ72r8LQVVKz2gG7HtIRLJhUVV1aRUZ1rsj0DfB3qypDHvMjGEVOkiu8 3Ewpgkw8FqA/oNJM9oXGmg4gL/iD4YL1JTac3UioBpo+lIPVA0msCNVEKI84B+XJPTGhr3 0NpB9mDNjUmJav5tkhl81Y0B1jezU/c= ARC-Authentication-Results: i=1; imf03.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=aculab.com; spf=pass (imf03.hostedemail.com: domain of david.laight@aculab.com designates 185.58.85.151 as permitted sender) smtp.mailfrom=david.laight@aculab.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1664877478; a=rsa-sha256; cv=none; b=3P13Pgovgeo1O10/qKhipvcq2xvSTgLOeJX62hSyfjww0FjHa88T7FjJ/ESJyNn2LLnQH8 9R2shlwuuq0yojtdKx+U2NnwEI/CagyELUPjjo+gyVkuXxVBsL4VRuTFcezVDybo4LjYMo JpLjnmHd3ofOOLmKiIulUpY8w5Zjaac= X-Stat-Signature: oz51kpnhkaetb51aohiyuc9rammtriky X-Rspam-User: X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: A472E20009 Authentication-Results: imf03.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=aculab.com; spf=pass (imf03.hostedemail.com: domain of david.laight@aculab.com designates 185.58.85.151 as permitted sender) smtp.mailfrom=david.laight@aculab.com X-HE-Tag: 1664877478-471797 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: RnJvbTogS2VlcyBDb29rIDxrZWVzY29va0BjaHJvbWl1bS5vcmc+DQouLi4NCj4gPg0KPiA+IElm IHlvdSBkb24ndCB3YW50IC9wcm9jLyRwaWQvbWVtIHRvIGJlIGFibGUgdG8gZG8gc3R1ZmYgbGlr ZSB0aGF0LA0KPiA+IHRoZW4gSU1PIHRoZSB3YXkgdG8gZ28gaXMgdG8gY2hhbmdlIHdoZW4gL3By b2MvJHBpZC9tZW0gdXNlcw0KPiA+IEZPTExfRk9SQ0UsIG9yIHRvIGxpbWl0IG92ZXJhbGwgd3Jp dGUgYWNjZXNzIHRvIC9wcm9jLyRwaWQvbWVtLg0KPiANCj4gWWVhaCwgYWxsIHJlYXNvbmFibGUu IEkganVzdCB3aXNoIHdlIGNvdWxkIGRpdGNoIEZPTExfRk9SQ0U7IGl0IGNvbnRpbnVlcw0KPiB0 byB3ZWlyZCBtZSBvdXQgaG93IHBvd2VyZnVsIHRoYXQgZmQncyBzaWRlLWVmZmVjdHMgYXJlLg0K DQpDb3VsZCB5b3UgcmVtb3ZlIEZPTExfRk9SQ0UgZnJvbSAvcHJvYy8kcGlkL21lbSBhbmQgYWRk IGENCi9wcm9jLyRwaWQvbWVtX2ZvcmNlIHRoYXQgZW5hYmxlIEZPTExfRk9SQ0UgYnV0IHJlcXVp cmVzIHJvb3QNCihvciBzaW1pbGFyKSBhY2Nlc3MuDQoNCkFsdGhvdWdoIEkgc3VzcGVjdCBnZGIg bWF5IGxpa2UgdG8gaGF2ZSB3cml0ZSBhY2Nlc3MgdG8NCmNvZGU/DQoNCglEYXZpZA0KDQotDQpS ZWdpc3RlcmVkIEFkZHJlc3MgTGFrZXNpZGUsIEJyYW1sZXkgUm9hZCwgTW91bnQgRmFybSwgTWls dG9uIEtleW5lcywgTUsxIDFQVCwgVUsNClJlZ2lzdHJhdGlvbiBObzogMTM5NzM4NiAoV2FsZXMp DQo=