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=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 14337C47080 for ; Sun, 23 May 2021 17:12:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E346D610A8 for ; Sun, 23 May 2021 17:12:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231949AbhEWROC (ORCPT ); Sun, 23 May 2021 13:14:02 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([207.82.80.151]:32879 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231907AbhEWRN7 (ORCPT ); Sun, 23 May 2021 13:13:59 -0400 Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mtapsc-6-cLEc0GmiMieukhPjIpklkg-1; Sun, 23 May 2021 18:12:26 +0100 X-MC-Unique: cLEc0GmiMieukhPjIpklkg-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 15.0.1497.2; Sun, 23 May 2021 18:12:24 +0100 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.015; Sun, 23 May 2021 18:12:24 +0100 From: David Laight To: 'Palmer Dabbelt' , "gary@garyguo.net" CC: Paul Walmsley , "aou@eecs.berkeley.edu" , "nickhu@andestech.com" , "nylon7@andestech.com" , "linux-riscv@lists.infradead.org" , "linux-kernel@vger.kernel.org" Subject: RE: [PATCH] riscv: fix memmove and optimise memcpy when misalign Thread-Topic: [PATCH] riscv: fix memmove and optimise memcpy when misalign Thread-Index: AQHXT3WL0lTofUR6TU66MVYMSFr0J6rxS6gA Date: Sun, 23 May 2021 17:12:23 +0000 Message-ID: <17637b10e71b41b89126cbb1b2fa61cf@AcuMS.aculab.com> References: <20210522232256.00003f08@garyguo.net> 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 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 RnJvbTogUGFsbWVyIERhYmJlbHQNCj4gU2VudDogMjMgTWF5IDIwMjEgMDI6NDcNCi4uLg0KPiBJ TU8gdGhlIHJpZ2h0IHdheSB0byBnbyBoZXJlIGlzIHRvIGp1c3QgbW92ZSB0byBDLWJhc2VkIHN0 cmluZyByb3V0aW5lcywNCj4gYXQgbGVhc3QgdW50aWwgd2UgZ2V0IHRvIHRoZSBwb2ludCB3aGVy ZSB3ZSdyZSBzZXJpb3VzbHkgb3B0aW1pemluZyBmb3INCj4gc3BlY2lmaWMgcHJvY2Vzc29ycy4g IFdlIHdlbnQgd2l0aCB0aGUgQy1iYXNlZCBzdHJpbmcgcm91bnRpbmVzIGluIGdsaWJjDQo+IGFz IHBhcnQgb2YgdGhlIHVwc3RyZWFtaW5nIHByb2Nlc3MgYW5kIGZvdW5kIG9ubHkgc29tZSBzbWFs bCBwZXJmb3JtYW5jZQ0KPiBkaWZmZXJlbmNlcyB3aGVuIGNvbXBhcmVkIHRvIHRoZSBoYW5kLXdy aXR0ZW4gYXNzZW1ibHksIGFuZCB0aGV5J3JlIHdheQ0KPiBlYXNpZXIgdG8gbWFpbnRhaW4uDQo+ IA0KPiBJSVJDIExpbnV4IG9ubHkgaGFzIHRyaXZpYWwgQyBzdHJpbmcgcm91dGluZXMgaW4gbGli LCBJIHRoaW5rIHRoZSBiZXN0DQo+IHdheSB0byBnbyBhYm91dCB0aGF0IHdvdWxkIGJlIHRvIGhp Z2hlciBwZXJmb3JtYW5jZSB2ZXJzaW9ucyBpbiB0aGVyZS4NCj4gVGhhdCB3aWxsIGFsbG93IG90 aGVyIHBvcnRzIHRvIHVzZSB0aGVtLg0KDQpJIGNlcnRhaW5seSB3b25kZXIgaG93IG11Y2ggYmVu ZWZpdCB0aGVzZSBtYXNzaXZlbHkgdW5yb2xsZWQNCmxvb3BzIGhhdmUgb24gbW9kZXJuIHN1cGVy c2NhbGVyIHByb2Nlc3NvcnMgLSBlc3BlY2lhbGx5IHRob3NlDQp3aXRoIGFueSBmb3JtIG9mICdv dXQgb2Ygb3JkZXInIGV4ZWN1dGlvbi4NCg0KSXQgaXMgb2Z0ZW4gZWFzeSB0byB3cml0ZSBhc3Nl bWJsZXIgd2hlcmUgYWxsIHRoZSBsb29wDQpjb250cm9sIGluc3RydWN0aW9ucyBoYXBwZW4gaW4g cGFyYWxsZWwgd2l0aCB0aGUgbWVtb3J5DQphY2Nlc3NlcyAtIHdoaWNoIGNhbm5vdCBiZSBhdm9p ZGVkLg0KTG9vcCB1bnJvbGxpbmcgaXMgc28gMTk3MHMuDQoNClNvbWV0aW1lcyB5b3UgbmVlZCB0 byB1bnJvbGwgb25jZS4NCkFuZCBtYXliZSBpbnRlcmxlYXZlIHRoZSBsb2FkcyBhbmQgc3RvcmVz Lg0KQnV0IGFmdGVyIHRoYXQgeW91IGNhbiBqdXN0IGJlIHRyYXNoaW5nIHRoZSBpLWNhY2hlLg0K DQoJRGF2aWQNCg0KLQ0KUmVnaXN0ZXJlZCBBZGRyZXNzIExha2VzaWRlLCBCcmFtbGV5IFJvYWQs IE1vdW50IEZhcm0sIE1pbHRvbiBLZXluZXMsIE1LMSAxUFQsIFVLDQpSZWdpc3RyYXRpb24gTm86 IDEzOTczODYgKFdhbGVzKQ0K