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=-0.9 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham 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 4E29EC43387 for ; Fri, 14 Dec 2018 14:38:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A2ABF206C0 for ; Fri, 14 Dec 2018 14:38:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730158AbeLNOir (ORCPT ); Fri, 14 Dec 2018 09:38:47 -0500 Received: from eu-smtp-delivery-151.mimecast.com ([146.101.78.151]:28308 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726554AbeLNOir (ORCPT ); Fri, 14 Dec 2018 09:38:47 -0500 Received: from AcuMS.aculab.com (156.67.243.126 [156.67.243.126]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-109-Ck1L3wHcP-6yXgXKCEeFmw-1; Fri, 14 Dec 2018 14:38:42 +0000 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b::d117) by AcuMS.aculab.com (fd9f:af1c:a25b::d117) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Fri, 14 Dec 2018 14:38:53 +0000 Received: from AcuMS.Aculab.com ([fe80::43c:695e:880f:8750]) by AcuMS.aculab.com ([fe80::43c:695e:880f:8750%12]) with mapi id 15.00.1347.000; Fri, 14 Dec 2018 14:38:53 +0000 From: David Laight To: 'Richard Weinberger' , "kevin@guarana.org" CC: "glaubitz@physik.fu-berlin.de" , "Andy Lutomirski" , "x86@kernel.org" , LKML , "open list:ABI/API" , "H. Peter Anvin" , Peter Zijlstra , Borislav Petkov , "fweimer@redhat.com" , Mike Frysinger , "H.J. Lu" , "dalias@libc.org" , "x32@buildd.debian.org" , Arnd Bergmann , Will Deacon , Catalin Marinas , Linus Torvalds Subject: RE: Can we drop upstream Linux x32 support? Thread-Topic: Can we drop upstream Linux x32 support? Thread-Index: AQHUksMIEw1uarZA0kyk7mn2rjoPwKV+S2TA Date: Fri, 14 Dec 2018 14:38:53 +0000 Message-ID: References: <70bb54b2-8ed3-b5ee-c02d-6ef66c4f27eb@physik.fu-berlin.de> <20181213050313.GA21201@ip-172-31-15-78> In-Reply-To: Accept-Language: en-GB, en-US Content-Language: 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-MC-Unique: Ck1L3wHcP-6yXgXKCEeFmw-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogUmljaGFyZCBXZWluYmVyZ2VyDQo+IFNlbnQ6IDEzIERlY2VtYmVyIDIwMTggMDk6MDUN Cj4gT24gVGh1LCBEZWMgMTMsIDIwMTggYXQgNjowMyBBTSBLZXZpbiBFYXN0b24gPGtldmluQGd1 YXJhbmEub3JnPiB3cm90ZToNCj4gPg0KPiA+IE9uIFR1ZSwgRGVjIDExLCAyMDE4IGF0IDExOjI5 OjE0QU0gKzAxMDAsIEpvaG4gUGF1bCBBZHJpYW4gR2xhdWJpdHogd3JvdGU6DQo+ID4gLi4uDQo+ ID4gPiBJIGNhbid0IHNheSBhbnl0aGluZyBhYm91dCB0aGUgc3lzY2FsbCBpbnRlcmZhY2UuIEhv d2V2ZXIsIHdoYXQgSSBkbyBrbm93DQo+ID4gPiBpcyB0aGF0IHRoZSB3ZWlyZCBjb21iaW5hdGlv biBvZiBhIDMyLWJpdCB1c2VybGFuZCB3aXRoIGEgNjQtYml0IGtlcm5lbA0KPiA+ID4gaW50ZXJm YWNlIGlzIHNvbWV0aW1lcyBjYXVzaW5nIGlzc3Vlcy4gRm9yIGV4YW1wbGUsIGFwcGxpY2F0aW9u IGNvZGUgdXN1YWxseQ0KPiA+ID4gZXhwZWN0cyB0aGluZ3MgbGlrZSB0aW1lX3QgdG8gYmUgMzIt Yml0IG9uIGEgMzItYml0IHN5c3RlbS4gSG93ZXZlciwgdGhpcw0KPiA+ID4gaXNuJ3QgdGhlIGNh c2UgZm9yIHgzMiB3aGljaCBpcyB3aHkgY29kZSBmYWlscyB0byBidWlsZC4NCj4gPg0KPiA+IE9w ZW5CU0QgYW5kIE5ldEJTRCBib3RoIGhhdmUgNjQtYml0IHRpbWVfdCBvbiAzMi1iaXQgc3lzdGVt cyBhbmQgaGF2ZQ0KPiA+IGhhZCBmb3IgZm91ciBvciBmaXZlIHllYXJzIGF0IHRoaXMgcG9pbnQu DQo+IA0KPiBUaGV5IGNhbiBhbHNvIGRvIGZsYWctZGF5IGNoYW5nZXMgYW5kIGJyZWFrIGV4aXN0 aW5nIGFwcGxpY2F0aW9ucywgTGludXggbm90Lg0KDQpOb3QgdHJ1ZSBhdCBhbGwuDQpUaGUgYmlu YXJ5IGNvbXBhdGliaWxpdHkgaW4gTmV0QlNEIGlzIHByb2JhYmx5IGJldHRlciB0aGFuIHRoYXQg aW4gTGludXgNCmFuZCBnb2VzIGJhY2sgYSBsb25nIHdheS4NCg0KRm9yIHRoZSB0aW1lX3QgY2hh bmdlcyBuZXcgc3lzdGVtIGNhbGxzIG51bWJlcnMgd2VyZSBhc3NpZ25lZCB3aGVyZSBuZWVkZWQu DQpUaGUgc3lzdGVtIGhlYWRlcnMgYW5kIGxpYmMgd2VyZSB1cGRhdGVkIHNvIHRoYXQgcmVjb21w aWxlZCBjb2RlIHdvdWxkDQp1c2UgdGhlIG5ldyBzeXN0ZW0gY2FsbHMuDQoNClRoZSBvbmx5IHJl YWwgYWR2YW50YWdlIHRoYXQgTmV0QlNEIGhhcyBpcyB0aGF0IGl0cyBsaWJjIChhbmQgc3RhbmRh cmQNCnV0aWxpdGllcykgYXJlIHJlbGVhc2VkIHdpdGggdGhlIGtlcm5lbCBtYWtpbmcgaXQgbXVj aCBlYXNpZXIgdG8gZ2V0DQphcHBsaWNhdGlvbnMgdG8gdXNlIHRoZSBuZXcgZmVhdHVyZXMuDQoN ClRoaXMgd2FzIGFsc28gZG9uZSBhIHZlcnkgbG9uZyB0aW1lIGFnbyB3aGVuIGZpbGUgb2Zmc2V0 cyB3ZXJlIGV4dGVuZGVkDQp0byA2NCBiaXRzLg0KDQpTb21lIG9mIHRoZSBzeXN0ZW0gY2FsbHMg aGF2ZSBxdWl0ZSBhIGZldyAnY29tcGF0aWJpbGl0eScgdmVyc2lvbnMuDQpBcyB3ZWxsIGFzIHRo ZSBvbmVzIGZvciBlbXVsYXRpb25zIG9mIG90aGVyIG9wZXJhdGluZyBzeXN0ZW1zLg0KSXQgaGFz IGJlZW4gcG9zc2libGUgdG8gcnVuIGNvcGllcyBvZiBmaXJlZm94IGNvbXBpbGVkIGZvciBMaW51 eA0KdW5kZXIgTmV0QlNELg0KDQoJRGF2aWQNCg0KLQ0KUmVnaXN0ZXJlZCBBZGRyZXNzIExha2Vz aWRlLCBCcmFtbGV5IFJvYWQsIE1vdW50IEZhcm0sIE1pbHRvbiBLZXluZXMsIE1LMSAxUFQsIFVL DQpSZWdpc3RyYXRpb24gTm86IDEzOTczODYgKFdhbGVzKQ0K