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=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 D07C4C433B4 for ; Thu, 6 May 2021 09:53:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 973B261207 for ; Thu, 6 May 2021 09:53:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234283AbhEFJyz (ORCPT ); Thu, 6 May 2021 05:54:55 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.85.151]:45309 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231194AbhEFJyz (ORCPT ); Thu, 6 May 2021 05:54:55 -0400 Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-138-SkAPRRxqPq-oJXvQAjJ0Rg-1; Thu, 06 May 2021 10:53:55 +0100 X-MC-Unique: SkAPRRxqPq-oJXvQAjJ0Rg-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 15.0.1497.2; Thu, 6 May 2021 10:53:53 +0100 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.015; Thu, 6 May 2021 10:53:53 +0100 From: David Laight To: 'Andy Lutomirski' , 'Simon Marchi' CC: 'Stefan Metzmacher' , 'Borislav Petkov' , 'Peter Zijlstra' , 'Linus Torvalds' , 'Thomas Gleixner' , 'Jens Axboe' , 'Linux Kernel Mailing List' , 'io-uring' , "'the arch/x86 maintainers'" , "'linux-toolchains@vger.kernel.org'" Subject: RE: [PATCH] io_thread/x86: don't reset 'cs', 'ss', 'ds' and 'es' registers for io_threads Thread-Topic: [PATCH] io_thread/x86: don't reset 'cs', 'ss', 'ds' and 'es' registers for io_threads Thread-Index: AQHXQfuSElK5zn4+eUeudkt5GoEV9qrWNZZwgAABpwA= Date: Thu, 6 May 2021 09:53:53 +0000 Message-ID: References: <8735v3ex3h.ffs@nanos.tec.linutronix.de> <3C41339D-29A2-4AB1-958F-19DB0A92D8D7@amacapital.net> <044d0bad-6888-a211-e1d3-159a4aeed52d@polymtl.ca> <932d65e1-5a8f-c86a-8673-34f0e006c27f@samba.org> <30e248aa-534d-37ff-2954-a70a454391fc@polymtl.ca> In-Reply-To: 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: io-uring@vger.kernel.org PiA+IChUbyBhdm9pZCBjb25mdXNpb24sIHRoaXMgaXMgbm90IGEgdW5pdmVyc2FsIHByb3BlcnR5 IG9mIExpbnV4LiAgYXJtNjQNCj4gPiBhbmQgYXJtMzIgdGFza3Mgb24gYW4gYXJtNjQgTGludXgg aG9zdCBhcmUgZGlmZmVyZW50IGFuZCBjYW5ub3QNCj4gPiBhcmJpdHJhcmlseSBzd2l0Y2ggbW9k ZXMuKQ0KPiANCj4gQWx0aG91Z2ggdGhlcmUgYXJlIHBhdGNoZXMgbHVya2luZyB0byBjaGFuZ2Ug dGhhdC4NCj4gKG5vdCBmcm9tIG1lKS4NCg0KQWN0dWFsbHkgdGhleSBtYXkgYmUganVzdCB0byBh bGxvdyA2NGJpdCB0YXNrcyBtYWtlIDMyYml0IHN5c3RlbSBjYWxscy4NClRoZSBjb2RlIGlzIGFs bW9zdCBjZXJ0YWlubHkgc3RpbGwgNTRiaXQuDQoNCglEYXZpZA0KDQotDQpSZWdpc3RlcmVkIEFk ZHJlc3MgTGFrZXNpZGUsIEJyYW1sZXkgUm9hZCwgTW91bnQgRmFybSwgTWlsdG9uIEtleW5lcywg TUsxIDFQVCwgVUsNClJlZ2lzdHJhdGlvbiBObzogMTM5NzM4NiAoV2FsZXMpDQo=