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=-8.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,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 B0DC1C4743C for ; Mon, 21 Jun 2021 11:55:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 946656112D for ; Mon, 21 Jun 2021 11:55:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229807AbhFUL56 (ORCPT ); Mon, 21 Jun 2021 07:57:58 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.86.151]:57355 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229576AbhFUL5z (ORCPT ); Mon, 21 Jun 2021 07:57:55 -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-11-6_goVtNKMYqCsuMD0i38gA-1; Mon, 21 Jun 2021 12:55:38 +0100 X-MC-Unique: 6_goVtNKMYqCsuMD0i38gA-1 Received: from AcuMS.Aculab.com (10.202.163.4) by AcuMS.aculab.com (10.202.163.4) with Microsoft SMTP Server (TLS) id 15.0.1497.18; Mon, 21 Jun 2021 12:55:37 +0100 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.018; Mon, 21 Jun 2021 12:55:37 +0100 From: David Laight To: 'Akira Tsukamoto' , Paul Walmsley , Palmer Dabbelt , Albert Ou , "linux-kernel@vger.kernel.org" , "linux-riscv@lists.infradead.org" Subject: RE: [PATCH 5/5] riscv: __asm_to/copy_from_user: Bulk copy when both src, dst are aligned Thread-Topic: [PATCH 5/5] riscv: __asm_to/copy_from_user: Bulk copy when both src, dst are aligned Thread-Index: AQHXZQBMzI5fByhdl0uLY1idpEeJFqseXBJw Date: Mon, 21 Jun 2021 11:55:37 +0000 Message-ID: <4a847070ad494e839de1d3fc5b39ba57@AcuMS.aculab.com> References: <5a5c07ac-8c11-79d3-46a3-a255d4148f76@gmail.com> <4637f0f2-2da9-1056-37bf-17c0861b6bff@gmail.com> In-Reply-To: <4637f0f2-2da9-1056-37bf-17c0861b6bff@gmail.com> 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: linux-kernel@vger.kernel.org RnJvbTogQWtpcmEgVHN1a2Ftb3RvDQo+IFNlbnQ6IDE5IEp1bmUgMjAyMSAxMjo0Mw0KPiANCj4g SW4gdGhlIGx1Y2t5IHNpdHVhdGlvbiB0aGF0IHRoZSBib3RoIHNvdXJjZSBhbmQgZGVzdGluYXRp b24gYWRkcmVzcyBhcmUgb24NCj4gdGhlIGFsaWduZWQgYm91bmRhcnksIHBlcmZvcm0gbG9hZCBh bmQgc3RvcmUgd2l0aCByZWdpc3RlciBzaXplIHRvIGNvcHkgdGhlDQo+IGRhdGEuDQo+IA0KPiBX aXRob3V0IHRoZSB1bnJvbGxpbmcsIGl0IHdpbGwgcmVkdWNlIHRoZSBzcGVlZCBzaW5jZSB0aGUg bmV4dCBzdG9yZQ0KPiBpbnN0cnVjdGlvbiBmb3IgdGhlIHNhbWUgcmVnaXN0ZXIgdXNpbmcgZnJv bSB0aGUgbG9hZCB3aWxsIHN0YWxsIHRoZQ0KPiBwaXBlbGluZS4NCi4uLg0KPiBkaWZmIC0tZ2l0 IGEvYXJjaC9yaXNjdi9saWIvdWFjY2Vzcy5TIGIvYXJjaC9yaXNjdi9saWIvdWFjY2Vzcy5TDQo+ IGluZGV4IGUyZTU3NTUxZmM3Ni4uYmNlYjA2MjllNDQwIDEwMDY0NA0KPiAtLS0gYS9hcmNoL3Jp c2N2L2xpYi91YWNjZXNzLlMNCj4gKysrIGIvYXJjaC9yaXNjdi9saWIvdWFjY2Vzcy5TDQo+IEBA IC02Nyw2ICs2NywzOSBAQCBFTlRSWShfX2FzbV9jb3B5X2Zyb21fdXNlcikNCj4gIAlibmV6CWEz LCAuTHNoaWZ0X2NvcHkNCj4gDQo+ICAuTHdvcmRfY29weToNCj4gKyAgICAgICAgLyoNCj4gKwkg KiBCb3RoIHNyYyBhbmQgZHN0IGFyZSBhbGlnbmVkLCB1bnJvbGxlZCB3b3JkIGNvcHkNCj4gKwkg Kg0KPiArCSAqIGEwIC0gc3RhcnQgb2YgYWxpZ25lZCBkc3QNCj4gKwkgKiBhMSAtIHN0YXJ0IG9m IGFsaWduZWQgc3JjDQo+ICsJICogYTMgLSBhMSAmIG1hc2s6KFNaUkVHLTEpDQo+ICsJICogdDAg LSBlbmQgb2YgYWxpZ25lZCBkc3QNCj4gKwkgKi8NCj4gKwlhZGRpCXQwLCB0MCwgLSg4KlNaUkVH LTEpIC8qIG5vdCB0byBvdmVyIHJ1biAqLw0KPiArMjoNCj4gKwlmaXh1cCBSRUdfTCAgIGE0LCAg ICAgICAgMChhMSksIDEwZg0KPiArCWZpeHVwIFJFR19MICAgYTUsICAgIFNaUkVHKGExKSwgMTBm DQo+ICsJZml4dXAgUkVHX0wgICBhNiwgIDIqU1pSRUcoYTEpLCAxMGYNCj4gKwlmaXh1cCBSRUdf TCAgIGE3LCAgMypTWlJFRyhhMSksIDEwZg0KPiArCWZpeHVwIFJFR19MICAgdDEsICA0KlNaUkVH KGExKSwgMTBmDQo+ICsJZml4dXAgUkVHX0wgICB0MiwgIDUqU1pSRUcoYTEpLCAxMGYNCj4gKwlm aXh1cCBSRUdfTCAgIHQzLCAgNipTWlJFRyhhMSksIDEwZg0KPiArCWZpeHVwIFJFR19MICAgdDQs ICA3KlNaUkVHKGExKSwgMTBmDQo+ICsJZml4dXAgUkVHX1MgICBhNCwgICAgICAgIDAoYTApLCAx MGYNCj4gKwlmaXh1cCBSRUdfUyAgIGE1LCAgICBTWlJFRyhhMCksIDEwZg0KPiArCWZpeHVwIFJF R19TICAgYTYsICAyKlNaUkVHKGEwKSwgMTBmDQo+ICsJZml4dXAgUkVHX1MgICBhNywgIDMqU1pS RUcoYTApLCAxMGYNCj4gKwlmaXh1cCBSRUdfUyAgIHQxLCAgNCpTWlJFRyhhMCksIDEwZg0KPiAr CWZpeHVwIFJFR19TICAgdDIsICA1KlNaUkVHKGEwKSwgMTBmDQo+ICsJZml4dXAgUkVHX1MgICB0 MywgIDYqU1pSRUcoYTApLCAxMGYNCj4gKwlmaXh1cCBSRUdfUyAgIHQ0LCAgNypTWlJFRyhhMCks IDEwZg0KPiArCWFkZGkJYTAsIGEwLCA4KlNaUkVHDQo+ICsJYWRkaQlhMSwgYTEsIDgqU1pSRUcN Cj4gKwlibHR1CWEwLCB0MCwgMmINCj4gKw0KPiArCWFkZGkJdDAsIHQwLCA4KlNaUkVHLTEgLyog cmV2ZXJ0IHRvIG9yaWdpbmFsIHZhbHVlICovDQo+ICsJagkuTGJ5dGVfY29weV90YWlsDQo+ICsN Cg0KQXJlIHRoZXJlIGFueSByaXNjdiBjaGlwcyB0aGFuIGNhbiBkbyBhIG1lbW9yeSByZWFkIGFu ZCBhDQptZW1vcnkgd3JpdGUgaW50IHRoZSBzYW1lIGN5Y2xlIGJ1dCBkb24ndCBoYXZlIHNpZ25p ZmljYW50DQonb3V0IG9mIG9yZGVyJyBleGVjdXRpb24/DQoNClN1Y2ggY2hpcHMgd2lsbCBleGVj dXRlIHRoYXQgY29kZSB2ZXJ5IGJhZGx5Lg0KT3IsIHJhdGhlciwgdGhlcmUgYXJlIGxvb3BzIHRo YXQgYWxsb3cgY29uY3VycmVudCByZWFkK3dyaXRlDQp0aGF0IHdpbGwgYmUgYSBsb3QgZmFzdGVy Lg0KDQpBbHNvIG9uIGEgY3B1IHRoYXQgY2FuIGV4ZWN1dGUgYSBtZW1vcnkgcmVhZC93cml0ZQ0K YXQgdGhlIHNhbWUgdGltZSBhcyBhbiBhZGQgKHByb2JhYmx5IGFueXRoaW5nIHN1cGVyY2FsZXIp DQp5b3Ugd2FudCB0byBtb3ZlIHRoZSB0d28gJ2FkZGknIGZ1cnRoZXIgdXAgc28gdGhleSBnZXQN CmV4ZWN1dGVkICdmb3IgZnJlZScuDQoNCglEYXZpZA0KDQotDQpSZWdpc3RlcmVkIEFkZHJlc3Mg TGFrZXNpZGUsIEJyYW1sZXkgUm9hZCwgTW91bnQgRmFybSwgTWlsdG9uIEtleW5lcywgTUsxIDFQ VCwgVUsNClJlZ2lzdHJhdGlvbiBObzogMTM5NzM4NiAoV2FsZXMpDQo=