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[23.128.96.18]) by mx.google.com with ESMTP id bz9si2174952ejc.664.2020.06.18.09.42.13; Thu, 18 Jun 2020 09:42:35 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=aculab.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730668AbgFRQjq (ORCPT + 99 others); Thu, 18 Jun 2020 12:39:46 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([207.82.80.151]:45854 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729214AbgFRQjp (ORCPT ); Thu, 18 Jun 2020 12:39:45 -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-262-hD1Yy6NVM8mnx0RAvwuLaA-1; Thu, 18 Jun 2020 17:39:42 +0100 X-MC-Unique: hD1Yy6NVM8mnx0RAvwuLaA-1 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; Thu, 18 Jun 2020 17:39:35 +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; Thu, 18 Jun 2020 17:39:35 +0100 From: David Laight To: 'Alexey Dobriyan' CC: 'Matt Fleming' , Ingo Molnar , Peter Zijlstra , Thomas Gleixner , "linux-kernel@vger.kernel.org" , "Grimm, Jon" , "Kumar, Venkataramanan" , Jan Kara , "stable@vger.kernel.org" Subject: RE: [PATCH] x86/asm/64: Align start of __clear_user() loop to 16-bytes Thread-Topic: [PATCH] x86/asm/64: Align start of __clear_user() loop to 16-bytes Thread-Index: AQHWRVoOsv5Rc5DeEUqSipuEjk3RuqjeLGswgAAdloCAAEi7sA== Date: Thu, 18 Jun 2020 16:39:35 +0000 Message-ID: <20b0166e11f44bf491062838090b93be@AcuMS.aculab.com> References: <20200618102002.30034-1-matt@codeblueprint.co.uk> <39f8304b75094f87a54ace7732708d30@AcuMS.aculab.com> <20200618131655.GA24607@localhost.localdomain> In-Reply-To: <20200618131655.GA24607@localhost.localdomain> 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-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com 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 RnJvbTogQWxleGV5IERvYnJpeWFuIA0KPiBTZW50OiAxOCBKdW5lIDIwMjAgMTQ6MTcNCi4uLg0K PiA+ID4gZGlmZiAtLWdpdCBhL2FyY2gveDg2L2xpYi91c2VyY29weV82NC5jIGIvYXJjaC94ODYv bGliL3VzZXJjb3B5XzY0LmMNCj4gPiA+IGluZGV4IGZmZjI4YzZmNzNhMi4uYjBkZmFjM2QzZGY3 IDEwMDY0NA0KPiA+ID4gLS0tIGEvYXJjaC94ODYvbGliL3VzZXJjb3B5XzY0LmMNCj4gPiA+ICsr KyBiL2FyY2gveDg2L2xpYi91c2VyY29weV82NC5jDQo+ID4gPiBAQCAtMjQsNiArMjQsNyBAQCB1 bnNpZ25lZCBsb25nIF9fY2xlYXJfdXNlcih2b2lkIF9fdXNlciAqYWRkciwgdW5zaWduZWQgbG9u ZyBzaXplKQ0KPiA+ID4gIAlhc20gdm9sYXRpbGUoDQo+ID4gPiAgCQkiCXRlc3RxICAlW3NpemU4 XSwlW3NpemU4XVxuIg0KPiA+ID4gIAkJIglqeiAgICAgNGZcbiINCj4gPiA+ICsJCSIJLmFsaWdu IDE2XG4iDQo+ID4gPiAgCQkiMDoJbW92cSAkMCwoJVtkc3RdKVxuIg0KPiA+ID4gIAkJIglhZGRx ICAgJDgsJVtkc3RdXG4iDQo+ID4gPiAgCQkiCWRlY2wgJSVlY3ggOyBqbnogICAwYlxuIg0KPiA+ DQo+ID4gWW91IGNhbiBkbyBiZXR0ZXIgdGhhdCB0aGF0IGxvb3AuDQo+ID4gQ2hhbmdlICdkc3Qn IHRvIHBvaW50IHRvIHRoZSBlbmQgb2YgdGhlIGJ1ZmZlciwgbmVnYXRlIHRoZSBjb3VudA0KPiA+ IGFuZCBkaXZpZGUgYnkgOCBhbmQgeW91IGdldDoNCj4gPiAJCSIwOgltb3ZxICQwLCgkW2RzdF0s JSVlY3gsOClcbiINCj4gPiAJCSIJYWRkICQxLCUlZWN4Ig0KPiA+IAkJIglqbnogMGJcbiINCj4g PiB3aGljaCBtaWdodCBydW4gYXQgb25lIGl0ZXJhdGlvbiBwZXIgY2xvY2sgZXNwZWNpYWxseSBv biBjcHUgdGhhdCBwYWlyDQo+ID4gdGhlIGFkZCBhbmQgam56IGludG8gYSBzaW5nbGUgdW9wLg0K PiA+IChZb3UgbmVlZCB0byB1c2UgYWRkIG5vdCBpbmMuKQ0KPiANCj4gL2Rldi96ZXJvIHNob3Vs ZCBwcm9iYWJseSB1c2UgUkVQIFNUT1NCIGV0YyBqdXN0IGxpa2UgZXZlcnl0aGluZyBlbHNlLg0K DQpBbG1vc3QgY2VydGFpbmx5IGl0IHNob3VsZG4ndCwgYW5kIG5laXRoZXIgc2hvdWxkIGFueXRo aW5nIGVsc2UuDQpQb3RlbnRpYWxseSBpdCBjb3VsZCB1c2Ugd2hhdGV2ZXIgbWVtc2V0KCkgaXMg cGF0Y2hlZCB0by4NClRoYXQgTUlHSFQgYmUgJ3JlcCBzdG9zJyBvbiBzb21lIGNwdSB2YXJpYW50 cywgYnV0IGluIGdlbmVyYWwNCml0IGlzIHNsb3cuDQoNCglEYXZpZA0KDQotDQpSZWdpc3RlcmVk IEFkZHJlc3MgTGFrZXNpZGUsIEJyYW1sZXkgUm9hZCwgTW91bnQgRmFybSwgTWlsdG9uIEtleW5l cywgTUsxIDFQVCwgVUsNClJlZ2lzdHJhdGlvbiBObzogMTM5NzM4NiAoV2FsZXMpDQo=