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 B83FBC4332F for ; Wed, 12 Jan 2022 14:58:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1354394AbiALO6S (ORCPT ); Wed, 12 Jan 2022 09:58:18 -0500 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.85.151]:50768 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1354382AbiALO6Q (ORCPT ); Wed, 12 Jan 2022 09:58:16 -0500 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-138-PRd9B9jAPKiWgPy9P27ZCQ-1; Wed, 12 Jan 2022 14:58:14 +0000 X-MC-Unique: PRd9B9jAPKiWgPy9P27ZCQ-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 15.0.1497.26; Wed, 12 Jan 2022 14:58:14 +0000 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.026; Wed, 12 Jan 2022 14:58:14 +0000 From: David Laight To: 'Mathieu Desnoyers' , Christian Brauner CC: Christian Brauner , Peter Zijlstra , linux-kernel , "Thomas Gleixner" , paulmck , Boqun Feng , "H. Peter Anvin" , Paul Turner , linux-api , Florian Weimer , carlos Subject: RE: [RFC PATCH v2 1/2] rseq: x86: implement abort-at-ip extension Thread-Topic: [RFC PATCH v2 1/2] rseq: x86: implement abort-at-ip extension Thread-Index: AdgHxNJPmHALYHCBSGGqQq0pyoAGXA== Date: Wed, 12 Jan 2022 14:58:14 +0000 Message-ID: <71e7d09733df4a899d12b7ef25198bbc@AcuMS.aculab.com> References: <20220110171611.8351-1-mathieu.desnoyers@efficios.com> <20220111110556.inteixgtl5vpmka7@wittgenstein> <1626924888.21447.1641922985771.JavaMail.zimbra@efficios.com> <20220112084617.32bjjo774n7vvyct@wittgenstein> <1475639366.24565.1641998849957.JavaMail.zimbra@efficios.com> In-Reply-To: <1475639366.24565.1641998849957.JavaMail.zimbra@efficios.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-kernel@vger.kernel.org PiAgKiBbKl0gVGhlIG9wZW5yaXNjLCBwb3dlcnBjNjQgYW5kIHg4Ni02NCBhcmNoaXRlY3R1cmVz IGRlZmluZSBhICJyZWR6b25lIiBhcyBhDQo+ICAqICAgICBzdGFjayBhcmVhIGJleW9uZCB0aGUg c3RhY2sgcG9pbnRlciB3aGljaCBjYW4gYmUgdXNlZCBieSB0aGUgY29tcGlsZXINCj4gICogICAg IHRvIHN0b3JlIGxvY2FsIHZhcmlhYmxlcyBpbiBsZWFmIGZ1bmN0aW9ucy4NCg0KSSB3b25kZXIg aWYgdGhhdCBpcyByZWFsbHkgd29ydGggdGhlIHRyb3VibGUgaXQgY2F1c2VzIQ0KQnkgdGhlIHRp bWUgYSBmdW5jdGlvbiBpcyBzcGlsbGluZyB2YWx1ZXMgdG8gc3RhY2sgdGhlIGNvc3QNCm9mIGEg JXNwIHVwZGF0ZSBpcyBhbG1vc3QgY2VydGFpbmx5IG5vaXNlLg0KDQpTb21lb25lIGNsZWFybHkg dGhvdWdodCBpdCB3YXMgYSAnZ29vZCBpZGVhICh0bSknLg0KDQoJRGF2aWQNCg0KLQ0KUmVnaXN0 ZXJlZCBBZGRyZXNzIExha2VzaWRlLCBCcmFtbGV5IFJvYWQsIE1vdW50IEZhcm0sIE1pbHRvbiBL ZXluZXMsIE1LMSAxUFQsIFVLDQpSZWdpc3RyYXRpb24gTm86IDEzOTczODYgKFdhbGVzKQ0K