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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3E2B6C19F2D for ; Tue, 9 Aug 2022 07:38:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239425AbiHIHim (ORCPT ); Tue, 9 Aug 2022 03:38:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32960 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232748AbiHIHik (ORCPT ); Tue, 9 Aug 2022 03:38:40 -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 ESMTP id 386F31EED3 for ; Tue, 9 Aug 2022 00:38:39 -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-82-hpQrFnagMDiwY00xHxje_Q-1; Tue, 09 Aug 2022 08:38:36 +0100 X-MC-Unique: hpQrFnagMDiwY00xHxje_Q-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 15.0.1497.36; Tue, 9 Aug 2022 08:38:35 +0100 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.036; Tue, 9 Aug 2022 08:38:35 +0100 From: David Laight To: "'H. Peter Anvin'" , 'Kanna Scarlet' , Borislav Petkov CC: Thomas Gleixner , Ingo Molnar , "Dave Hansen" , "x86@kernel.org" , "Ard Biesheuvel" , Bill Metzenthen , "Brijesh Singh" , Joerg Roedel , Josh Poimboeuf , "Kirill A. Shutemov" , Mark Rutland , Michael Roth , Peter Zijlstra , Sean Christopherson , Steven Rostedt , Ammar Faizi , "GNU/Weeb Mailing List" , Linux Kernel Mailing List Subject: RE: [PATCH 1/1] x86: Change mov $0, %reg with xor %reg, %reg Thread-Topic: [PATCH 1/1] x86: Change mov $0, %reg with xor %reg, %reg Thread-Index: AQHYqC07pBmJLRD/dU+qGFItY3OGOq2gCd9AgAVHBYCAAOQGIA== Date: Tue, 9 Aug 2022 07:38:35 +0000 Message-ID: <88f681a6c18944588676f93be10ba1b2@AcuMS.aculab.com> References: <20220804152656.8840-1-knscarlet@gnuweeb.org> <20220804152656.8840-2-knscarlet@gnuweeb.org> <20220804180805.9077-1-knscarlet@gnuweeb.org> <126271e264204581a42b079b51481740@AcuMS.aculab.com> 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 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 RnJvbTogSC4gUGV0ZXIgQW52aW4NCj4gU2VudDogMDggQXVndXN0IDIwMjIgMjA6MDANCj4gDQo+ IE9uIEF1Z3VzdCA1LCAyMDIyIDI6MjY6MDIgQU0gUERULCBEYXZpZCBMYWlnaHQgPERhdmlkLkxh aWdodEBBQ1VMQUIuQ09NPg0KPiB3cm90ZToNCj4gPkZyb206IEthbm5hIFNjYXJsZXQNCj4gPj4g U2VudDogMDQgQXVndXN0IDIwMjIgMTk6MDgNCj4gPj4NCj4gPj4gT24gOC80LzIyIDEwOjUzIFBN LCBCb3Jpc2xhdiBQZXRrb3Ygd3JvdGU6DQo+ID4+ID4gQm9udXMgcG9pbnRzIGlmIHlvdSBmaW5k IG91dCB3aGF0IG90aGVyIGFkdmFudGFnZQ0KPiA+PiA+DQo+ID4+ID4gWE9SIHJlZyxyZWcNCj4g Pj4gPg0KPiA+PiA+IGhhcyB3aGVuIGl0IGNvbWVzIHRvIGNsZWFyaW5nIGludGVnZXIgcmVnaXN0 ZXJzLg0KPiA+Pg0KPiA+PiBIZWxsbyBzaXIgQm9yaXNsYXYsDQo+ID4+DQo+ID4+IFRoYW5rIHlv dSBmb3IgeW91ciByZXNwb25zZS4gSSB0cmllZCB0byBmaW5kIG91dCBvdGhlciBhZHZhbnRhZ2Vz IG9mDQo+ID4+IHhvciByZWcscmVnIG9uIEdvb2dsZSBhbmQgZm91bmQgdGhpczoNCj4gPj4gaHR0 cHM6Ly9zdGFja292ZXJmbG93LmNvbS9hLzMzNjY4Mjk1LzcyNzUxMTQNCj4gPj4NCj4gPj4gICAi eG9yIChiZWluZyBhIHJlY29nbml6ZWQgemVyb2luZyBpZGlvbSwgdW5saWtlIG1vdiByZWcsIDAp IGhhcyBzb21lDQo+ID4+ICAgb2J2aW91cyBhbmQgc29tZSBzdWJ0bGUgYWR2YW50YWdlczoNCj4g Pj4NCj4gPj4gICAxLiBzbWFsbGVyIGNvZGUtc2l6ZSB0aGFuIG1vdiByZWcsMC4gKEFsbCBDUFVz KQ0KPiA+PiAgIDIuIGF2b2lkcyBwYXJ0aWFsLXJlZ2lzdGVyIHBlbmFsdGllcyBmb3IgbGF0ZXIg Y29kZS4NCj4gPj4gICAgICAoSW50ZWwgUDYtZmFtaWx5IGFuZCBTbkItZmFtaWx5KS4NCj4gPj4g ICAzLiBkb2Vzbid0IHVzZSBhbiBleGVjdXRpb24gdW5pdCwgc2F2aW5nIHBvd2VyIGFuZCBmcmVl aW5nIHVwDQo+ID4+ICAgICAgZXhlY3V0aW9uIHJlc291cmNlcy4gKEludGVsIFNuQi1mYW1pbHkp DQo+ID4+ICAgNC4gc21hbGxlciB1b3AgKG5vIGltbWVkaWF0ZSBkYXRhKSBsZWF2ZXMgcm9vbSBp biB0aGUgdW9wIGNhY2hlLWxpbmUNCj4gPj4gICAgICBmb3IgbmVhcmJ5IGluc3RydWN0aW9ucyB0 byBib3Jyb3cgaWYgbmVlZGVkLiAoSW50ZWwgU25CLWZhbWlseSkuDQo+ID4+ICAgNS4gZG9lc24n dCB1c2UgdXAgZW50cmllcyBpbiB0aGUgcGh5c2ljYWwgcmVnaXN0ZXIgZmlsZS4gKEludGVsDQo+ ID4+ICAgICAgU25CLWZhbWlseSAoYW5kIFA0KSBhdCBsZWFzdCwgcG9zc2libHkgQU1EIGFzIHdl bGwgc2luY2UgdGhleSB1c2UNCj4gPj4gICAgICBhIHNpbWlsYXIgUFJGIGRlc2lnbiBpbnN0ZWFk IG9mIGtlZXBpbmcgcmVnaXN0ZXIgc3RhdGUgaW4gdGhlIFJPQg0KPiA+PiAgICAgIGxpa2UgSW50 ZWwgUDYtZmFtaWx5IG1pY3JvYXJjaGl0ZWN0dXJlcy4pIg0KPiA+DQo+ID5Zb3UgbWlzc2VkIG9u ZSwgYW5kIGFuIGFkZGl0aW9uYWwgY2hhbmdlOg0KPiA+DQo+ID5Vc2UgInhvciAlcmF4LCVyYXgi IGluc3RlYWQgb2YgInhvciAlZWF4LCVlYXgiIHRvIHNhdmUNCj4gPnRoZSAncmVnJyBwcmVmaXgu DQo+ID4NCj4gPglEYXZpZA0KPiA+DQo+ID4tDQo+ID5SZWdpc3RlcmVkIEFkZHJlc3MgTGFrZXNp ZGUsIEJyYW1sZXkgUm9hZCwgTW91bnQgRmFybSwgTWlsdG9uIEtleW5lcywgTUsxIDFQVCwgVUsN Cj4gPlJlZ2lzdHJhdGlvbiBObzogMTM5NzM4NiAoV2FsZXMpDQo+ID4NCj4gPg0KPiANCj4gWW91 IG1lYW4gdGhlIG90aGVyIHdheSBhcm91bmQuLi4NCg0KTWF5YmUgOi0oDQpUaGUgMzJiaXQgdmVy c2lvbnMgYXJlIGJlc3QuDQpTb21laG93IHRoZSByZWdpc3RlciBuYW1pbmcgY29udmVudGlvbiBl bmRlZCB1cCBnZXR0aW5nIHNvcnQgb2YgJ2JhY2t3YXJkcycuDQoncmVnaXN0ZXInIGlzIGJpZ2dl ciB0aGFuICdleHRlbmRlZCcuDQpJJ3ZlICdvbmx5JyBiZWVuIHdyaXRpbmcgeDg2IGFzbSBzaW5j ZSAxOTgyIQ0KDQoJRGF2aWQNCg0KLQ0KUmVnaXN0ZXJlZCBBZGRyZXNzIExha2VzaWRlLCBCcmFt bGV5IFJvYWQsIE1vdW50IEZhcm0sIE1pbHRvbiBLZXluZXMsIE1LMSAxUFQsIFVLDQpSZWdpc3Ry YXRpb24gTm86IDEzOTczODYgKFdhbGVzKQ0K