Received: by 2002:a05:6359:c8b:b0:c7:702f:21d4 with SMTP id go11csp215784rwb; Tue, 4 Oct 2022 03:03:28 -0700 (PDT) X-Google-Smtp-Source: AMsMyM7qYRVNLhd0niEw/EQuVzP/WncQLtlkDvV00YZds/gEk5c8sEonC9NJi2WiOgRd465ki7j6 X-Received: by 2002:a17:90b:3e8c:b0:202:c7b1:b20b with SMTP id rj12-20020a17090b3e8c00b00202c7b1b20bmr16392690pjb.54.1664877808102; Tue, 04 Oct 2022 03:03:28 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1664877808; cv=none; d=google.com; s=arc-20160816; b=tm/hiorhekmAyeZl/hfPV+hvu1KgJLJvmgevdV76o7IP4dyFm5bMKEhWXek4u2TSbQ WzxWY1razp5+AIZQn+YdLuB98ukWnSGowb/PzAGtz4fzO5N1J3mL15b6/ah0rQXL1qRJ 21a6tQjfqzgvCWwP6/hYlepALIHTIPJbn7VL+2eW6BPDhHdYKR3lC+0MGGbSFhqRxQls 8rLRkiptkSzPKCrS3uZjO510U6HqkW1AQZVxxV/5d63Tyfwq9zbIkczpDoffmhcaup/c 0qldX7ZeRVChM7jJcXzHNTXQgXGngkELatao2awHEEScT4YLs8i51ZnZSctwpnGqakEN PMsw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:content-language :mime-version:accept-language:in-reply-to:references:message-id:date :thread-index:thread-topic:subject:cc:to:from; bh=GGaJcA60e4t1d9NkSaTAwFyzVU4MgVXIpI2JujAwPXI=; b=PWUF4RsP2xwBw+NCoHYHJHSokw/5rCu82EAPuIWPitvnoF12xe+pSYiCH/XbkEsxBH Il+DGCDJtEmtrHgHAc3L1hwpDaw4mjb+eIhYyOCnPKBRB+OhpNA5bAkQFpjCPx4uTJnb aqAUTIM2K6LOSxOJa3a33vX4xzJEkPzf5J9NcnIqrhWwn8zF2bR5nAg/Yv1xZOejVvrj /vt/6PsoNIL2d0mqPEy3KyMtvH1KFZqz7XfC4yDg0XjtJg1f09nQiZj6wB/Gd7CtxTJy huS7WTm+ljvwlXpY/Tr88fArz5YsvylXiY39dHjszmt9ts2SGb9jaBjje8JCQArblj01 7zZg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=aculab.com Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id f9-20020a170902ce8900b0016bea2a8b16si12181963plg.364.2022.10.04.03.03.01; Tue, 04 Oct 2022 03:03:28 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=aculab.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229863AbiJDJ6I (ORCPT + 99 others); Tue, 4 Oct 2022 05:58:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40846 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229862AbiJDJ6C (ORCPT ); Tue, 4 Oct 2022 05:58:02 -0400 Received: from eu-smtp-delivery-151.mimecast.com (eu-smtp-delivery-151.mimecast.com [185.58.85.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7E9421DA48 for ; Tue, 4 Oct 2022 02:57:58 -0700 (PDT) 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 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogS2VlcyBDb29rIDxrZWVzY29va0BjaHJvbWl1bS5vcmc+DQouLi4NCj4gPg0KPiA+IElm IHlvdSBkb24ndCB3YW50IC9wcm9jLyRwaWQvbWVtIHRvIGJlIGFibGUgdG8gZG8gc3R1ZmYgbGlr ZSB0aGF0LA0KPiA+IHRoZW4gSU1PIHRoZSB3YXkgdG8gZ28gaXMgdG8gY2hhbmdlIHdoZW4gL3By b2MvJHBpZC9tZW0gdXNlcw0KPiA+IEZPTExfRk9SQ0UsIG9yIHRvIGxpbWl0IG92ZXJhbGwgd3Jp dGUgYWNjZXNzIHRvIC9wcm9jLyRwaWQvbWVtLg0KPiANCj4gWWVhaCwgYWxsIHJlYXNvbmFibGUu IEkganVzdCB3aXNoIHdlIGNvdWxkIGRpdGNoIEZPTExfRk9SQ0U7IGl0IGNvbnRpbnVlcw0KPiB0 byB3ZWlyZCBtZSBvdXQgaG93IHBvd2VyZnVsIHRoYXQgZmQncyBzaWRlLWVmZmVjdHMgYXJlLg0K DQpDb3VsZCB5b3UgcmVtb3ZlIEZPTExfRk9SQ0UgZnJvbSAvcHJvYy8kcGlkL21lbSBhbmQgYWRk IGENCi9wcm9jLyRwaWQvbWVtX2ZvcmNlIHRoYXQgZW5hYmxlIEZPTExfRk9SQ0UgYnV0IHJlcXVp cmVzIHJvb3QNCihvciBzaW1pbGFyKSBhY2Nlc3MuDQoNCkFsdGhvdWdoIEkgc3VzcGVjdCBnZGIg bWF5IGxpa2UgdG8gaGF2ZSB3cml0ZSBhY2Nlc3MgdG8NCmNvZGU/DQoNCglEYXZpZA0KDQotDQpS ZWdpc3RlcmVkIEFkZHJlc3MgTGFrZXNpZGUsIEJyYW1sZXkgUm9hZCwgTW91bnQgRmFybSwgTWls dG9uIEtleW5lcywgTUsxIDFQVCwgVUsNClJlZ2lzdHJhdGlvbiBObzogMTM5NzM4NiAoV2FsZXMp DQo=