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=-5.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,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 DB7FEC3A59B for ; Fri, 30 Aug 2019 16:12:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B3FC023427 for ; Fri, 30 Aug 2019 16:12:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728017AbfH3QMI (ORCPT ); Fri, 30 Aug 2019 12:12:08 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([207.82.80.151]:53784 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727809AbfH3QMI (ORCPT ); Fri, 30 Aug 2019 12:12:08 -0400 Received: from AcuMS.aculab.com (156.67.243.126 [156.67.243.126]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mta-8-vPgvCSCrNQKAFRHlhul29Q-1; Fri, 30 Aug 2019 17:12:05 +0100 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) by AcuMS.aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Fri, 30 Aug 2019 17:12:04 +0100 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, 30 Aug 2019 17:12:04 +0100 From: David Laight To: 'Arnd Bergmann' , Josh Poimboeuf CC: Nick Desaulniers , Ilie Halip , Linux Kernel Mailing List , clang-built-linux , Peter Zijlstra Subject: RE: objtool warning "uses BP as a scratch register" with clang-9 Thread-Topic: objtool warning "uses BP as a scratch register" with clang-9 Thread-Index: AQHVX0vKqj9VEXOMQ0SdqQ13OMpYJacT3FgA Date: Fri, 30 Aug 2019 16:12:04 +0000 Message-ID: <7fb03b2951e04c5f9b2529a6b8d5c746@AcuMS.aculab.com> References: <20190827192255.wbyn732llzckmqmq@treble> <20190828152226.r6pl64ij5kol6d4p@treble> <20190829232439.w3whzmci2vqtq53s@treble> <20190830151422.o4pbvjyravrz2wre@treble> 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: vPgvCSCrNQKAFRHlhul29Q-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 RnJvbTogQXJuZCBCZXJnbWFubg0KPiBTZW50OiAzMCBBdWd1c3QgMjAxOSAxNjo1OQ0KLi4uDQo+ ID4gT3IgZXZlbiBiZXR0ZXIsIGl0IHdvdWxkIGJlIGdyZWF0IGlmIHdlIGNvdWxkIGdldCBDbGFu ZyB0byBjaGFuZ2UgdGhlaXINCj4gPiBtZW1zZXQoKSBpbnNlcnRpb24gaGV1cmlzdGljcywgc28g dGhhdCBLQVNBTiBhY3RzIG1vcmUgbGlrZSBub24tS0FTQU4NCj4gPiBjb2RlIGluIHRoYXQgcmVn YXJkLg0KPiANCj4gSSBzdXNwZWN0IHRoYXQncyBnb2luZyB0byBiZSBoYXJkZXIuIFRoZSBjbGFu Zy05IHJlbGVhc2UgaXMgZ29pbmcgdG8gYmUNCj4gc29vbiwgYW5kIHRoYXQgY2hhbmdlIHByb2Jh Ymx5IHdvdWxkbid0IGJlIGNvbnNpZGVyZWQgYSByZWdyZXNzaW9uIGZpeC4NCj4gDQo+IE1heWJl IE5pY2sgY2FuIGZpbmQgd2hhdCBoYXBwZW5zLCBidXQgSSBkb24ndCBhY3R1YWxseSBzZWUgYW55 IHJlZmVyZW5jZQ0KPiB0byBLQVNBTiBpbiB0aGUgbGx2bSBzb3VyY2UgY29kZSByZWxhdGVkIHRv IHRoZSBtZW1zZXQgZ2VuZXJhdGlvbi4NCj4gDQo+IGh0dHBzOi8vZ2l0aHViLmNvbS9sbHZtLW1p cnJvci9jbGFuZy9ibG9iL21hc3Rlci9saWIvQ29kZUdlbi9DR0V4cHJBZ2cuY3BwI0wxODAzDQo+ IGhhcyBhIGNoZWNrIGZvciA+MTYgYnl0ZXMsIGJ1dCB0aGF0IGFnYWluIGRvZXMgbm90IG1hdGNo IG15IG9ic2VydmF0aW9uLg0KDQpUaGF0IGxvb2tzIGxpa2UgdGhlIGNvZGUgZm9yIGluaXRpYWxp c2luZyBhIGxvY2FsIHN0cnVjdHVyZSB2YXJpYWJsZSwNCm5vdCBmb3IgbWVyZ2luZyAncmFuZG9t JyB3cml0ZXMgaW50byBhIG1lbXNldCgpLg0KDQoJRGF2aWQNCg0KLQ0KUmVnaXN0ZXJlZCBBZGRy ZXNzIExha2VzaWRlLCBCcmFtbGV5IFJvYWQsIE1vdW50IEZhcm0sIE1pbHRvbiBLZXluZXMsIE1L MSAxUFQsIFVLDQpSZWdpc3RyYXRpb24gTm86IDEzOTczODYgKFdhbGVzKQ0K