Received: by 2002:a05:6a10:206:0:0:0:0 with SMTP id 6csp4507555pxj; Tue, 22 Jun 2021 01:40:15 -0700 (PDT) X-Google-Smtp-Source: ABdhPJz10pNb3fqUja4tPirhN9kNqUqqRYzHEKKtlW7Yq3CCFirERGMoQgO9x7bK4p1mU/Ac3B5z X-Received: by 2002:a17:906:c1d0:: with SMTP id bw16mr2831414ejb.146.1624351215076; Tue, 22 Jun 2021 01:40:15 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1624351215; cv=none; d=google.com; s=arc-20160816; b=igABNk4h63eITWaSWWeC+aePlsFh/m69HqYbOYidXt0UIO09saOXrKDTLVgYzOeYRR VDYRUDvvb1RzOs2vetkdrzZfGtMq/S1ghuQ3J2TT8VGS1U8I+P4zLvZBZRUjN7+5DBu3 Swpdc++cJIQ9jt8u36+GvotiiOXqjmET9Db+2iLGyAoMwIHNHzEa8ldxweG+W5SZw5jN ouL8UiR25SnlYGLjPGCYTY0OYIhjoe26hBzIR4SSvvPFr8u00nFYEGtWWZBT5RhChInk XbsaoKyperHRWOEXe4jV8Tea0EaDg93Ih1PBywKVccWLkQJZBdrKW3T2XrQry/VWosXg IJXQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:content-language :mime-version:accept-language:in-reply-to:references:message-id:date :thread-index:thread-topic:subject:cc:to:from; bh=YUJUWaYG33dyPRqfDhVP9s4QFjRQK+vUXd0r9ocZ2Jo=; b=DGAMNqo7U7dBNCLTP27wybacdQgZXz5zW7oVLD/jFOS3bfzVK0rJUcBLr1NJu3iioF 7IhBcdrFZCjFhhNPlyNI/AI6vI2EuIDRnDbX7KMD3zUHqm588mYBLGh2XH/izVVIw2eo hg+bXOJ4j4S6Wl3aLfcAVEAK5MvAigNz1XcCH9K5UOu1a6vsAoZX5GIUunHRnGzauGyI b2G9GHb9JC+uPQ2rbSC0edA+n3t1Ej0ul6tkhtdW/JKWAHeWCFo32UEw0GG/zakJ1nE1 sHfPUMzLsJQQAvvdk91jrzreiwN/aizdId6S5VowDcnRi7zS8WkAy4vEd9J8hYcvjbSb v0TQ== ARC-Authentication-Results: i=1; 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 Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id v20si4772659ejk.445.2021.06.22.01.39.52; Tue, 22 Jun 2021 01:40:15 -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 S229628AbhFVIlK (ORCPT + 99 others); Tue, 22 Jun 2021 04:41:10 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.86.151]:28679 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229807AbhFVIlJ (ORCPT ); Tue, 22 Jun 2021 04:41:09 -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-1-aRG45FtSMtWCXO1T3F07Vw-1; Tue, 22 Jun 2021 09:38:51 +0100 X-MC-Unique: aRG45FtSMtWCXO1T3F07Vw-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; Tue, 22 Jun 2021 09:38:50 +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; Tue, 22 Jun 2021 09:38:50 +0100 From: David Laight To: 'Nick Kossifidis' , Matteo Croce CC: "linux-riscv@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "linux-arch@vger.kernel.org" , Paul Walmsley , Palmer Dabbelt , Albert Ou , Atish Patra , "Emil Renner Berthing" , Akira Tsukamoto , Drew Fustini , Bin Meng , Guo Ren Subject: RE: [PATCH v3 3/3] riscv: optimized memset Thread-Topic: [PATCH v3 3/3] riscv: optimized memset Thread-Index: AQHXZwMJWYnk4yvoiESUZuZXhHkP6qsfsYlg Date: Tue, 22 Jun 2021 08:38:50 +0000 Message-ID: References: <20210617152754.17960-1-mcroce@linux.microsoft.com> <20210617152754.17960-4-mcroce@linux.microsoft.com> <17cd289430f08f2b75b7f04242c646f6@mailhost.ics.forth.gr> In-Reply-To: <17cd289430f08f2b75b7f04242c646f6@mailhost.ics.forth.gr> 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 RnJvbTogTmljayBLb3NzaWZpZGlzDQo+IFNlbnQ6IDIyIEp1bmUgMjAyMSAwMjowOA0KPiANCj4g zqPPhM65z4IgMjAyMS0wNi0xNyAxODoyNywgTWF0dGVvIENyb2NlIM6tzrPPgc6xz4jOtToNCj4g PiArDQo+ID4gK3ZvaWQgKl9fbWVtc2V0KHZvaWQgKnMsIGludCBjLCBzaXplX3QgY291bnQpDQo+ ID4gK3sNCj4gPiArCXVuaW9uIHR5cGVzIGRlc3QgPSB7IC51OCA9IHMgfTsNCj4gPiArDQo+ID4g KwlpZiAoY291bnQgPj0gTUlOX1RIUkVTSE9MRCkgew0KPiA+ICsJCWNvbnN0IGludCBieXRlc19s b25nID0gQklUU19QRVJfTE9ORyAvIDg7DQo+IA0KPiBZb3UgY291bGQgbWFrZSAnY29uc3QgaW50 IGJ5dGVzX2xvbmcgPSBCSVRTX1BFUl9MT05HIC8gODsnDQoNCldoYXQgaXMgd3Jvbmcgd2l0aCBz aXplb2YgKGxvbmcpID8NCi4uLg0KPiA+ICsJCXVuc2lnbmVkIGxvbmcgY3UgPSAodW5zaWduZWQg bG9uZyljOw0KPiA+ICsNCj4gPiArCQkvKiBDb21wb3NlIGFuIHVsb25nIHdpdGggJ2MnIHJlcGVh dGVkIDQvOCB0aW1lcyAqLw0KPiA+ICsJCWN1IHw9IGN1IDw8IDg7DQo+ID4gKwkJY3UgfD0gY3Ug PDwgMTY7DQo+ID4gKyNpZiBCSVRTX1BFUl9MT05HID09IDY0DQo+ID4gKwkJY3UgfD0gY3UgPDwg MzI7DQo+ID4gKyNlbmRpZg0KPiA+ICsNCj4gDQo+IFlvdSBkb24ndCBoYXZlIHRvIGNyZWF0ZSBj dSBoZXJlLCB5b3UnbGwgZmlsbCBkZXN0IGJ1ZmZlciB3aXRoICdjJw0KPiBhbnl3YXkgc28gYWZ0 ZXIgZmlsbGluZyB1cCBlbm91Z2ggJ2MncyB0byBiZSBhYmxlIHRvIGdyYWIgYW4gYWxpZ25lZA0K PiB3b3JkIGZ1bGwgb2YgdGhlbSBmcm9tIGRlc3QsIHlvdSBjYW4ganVzdCBncmFiIHRoYXQgd29y ZCBhbmQga2VlcA0KPiBmaWxsaW5nIHVwIGRlc3Qgd2l0aCBpdC4NCg0KVGhhdCB3aWxsIGJlIGEg bG90IHNsb3dlciAtIGVzcGVjaWFsbHkgaWYgcnVuIG9uIHNvbWV0aGluZyBsaWtlIHg4Ni4NCkEg d3JpdGUtcmVhZCBvZiB0aGUgc2FtZSBzaXplIGlzIG9wdGltaXNlZCBieSB0aGUgc3RvcmUtbG9h ZCBmb3J3YXJkZXIuDQpCdXQgdGhlIGJ5dGUgd3JpdGUsIHdvcmQgcmVhZCB3aWxsIGhhdmUgdG8g Z28gdmlhIHRoZSBjYWNoZS4NCg0KWW91IGNhbiBqdXN0IHdyaXRlOg0KCWN1ID0gKHVuc2lnbmVk IGxvbmcpYyAqIDB4MDEwMTAxMDEwMTAxMDEwMXVsbDsNCmFuZCBsZXQgdGhlIGNvbXBpbGVyIHNv cnQgb3V0IHRoZSBiZXN0IHdheSB0byBnZW5lcmF0ZSB0aGUgY29uc3RhbnQuDQoNCj4gDQo+ID4g KyNpZm5kZWYgQ09ORklHX0hBVkVfRUZGSUNJRU5UX1VOQUxJR05FRF9BQ0NFU1MNCj4gPiArCQkv KiBGaWxsIHRoZSBidWZmZXIgb25lIGJ5dGUgYXQgdGltZSB1bnRpbCB0aGUgZGVzdGluYXRpb24N Cj4gPiArCQkgKiBpcyBhbGlnbmVkIG9uIGEgMzIvNjQgYml0IGJvdW5kYXJ5Lg0KPiA+ICsJCSAq Lw0KPiA+ICsJCWZvciAoOyBjb3VudCAmJiBkZXN0LnVwdHIgJSBieXRlc19sb25nOyBjb3VudC0t KQ0KPiANCj4gWW91IGNvdWxkIHJldXNlICYgbWFzayBoZXJlIGluc3RlYWQgb2YgJSBieXRlc19s b25nLg0KPiANCj4gPiArCQkJKmRlc3QudTgrKyA9IGM7DQo+ID4gKyNlbmRpZg0KPiANCj4gSSBu b3RpY2VkIHlvdSBhbHNvIHVzZWQgQ09ORklHX0hBVkVfRUZGSUNJRU5UX1VOQUxJR05FRF9BQ0NF U1Mgb24geW91cg0KPiBtZW1jcHkgcGF0Y2gsIGlzIGl0IHdvcnRoIGl0IGhlcmUgPyBUbyBiZWdp biB3aXRoIHJpc2N2IGRvZXNuJ3Qgc2V0IGl0DQo+IGFuZCBldmVuIGlmIGl0IGRpZCB3ZSBhcmUg dGFsa2luZyBhYm91dCBhIGxvb3AgdGhhdCB3aWxsIHJ1biBqdXN0IGEgZmV3DQo+IHRpbWVzIHRv IHJlYWNoIHRoZSBhbGlnbm1lbnQgYm91bmRhcnkgKHdvcnN0IGNhc2Ugc2NlbmFyaW8gaXQnbGwg cnVuIDcNCj4gdGltZXMpLCBJIGRvbid0IHRoaW5rIHdlIGdhaW4gbXVjaCBoZXJlLCBldmVuIGZv ciBhcmNocyB0aGF0IGhhdmUNCj4gZWZmaWNpZW50IHVuYWxpZ25lZCBhY2Nlc3MuDQoNCldpdGgg Q09ORklHX0hBVkVfRUZGSUNJRU5UX1VOQUxJR05FRF9BQ0NFU1MgaXQgcHJvYmFibHkgaXNuJ3Qg d29ydGgNCmV2ZW4gY2hlY2tpbmcgdGhlIGFsaWdubWVudC4NCldoaWxlIGFsaWduaW5nIHRoZSBj b3B5IHdpbGwgYmUgcXVpY2tlciBmb3IgYW4gdW5hbGlnbmVkIGJ1ZmZlciB0aGV5DQphbG1vc3Qg Y2VydGFpbmx5IGRvbid0IGhhcHBlbiBvZnRlbiBlbm91Z2ggdG8gd29ycnkgYWJvdXQuDQpJbiBh bnkgY2FzZSB5b3UnZCB3YW50IHRvIGRvIGEgbWlzYWxpZ25lZCB3b3JkIHdyaXRlIHRvIHRoZSBz dGFydA0Kb2YgdGhlIGJ1ZmZlciAtIG5vdCBzZXBhcmF0ZSBieXRlIHdyaXRlcy4NClByb3ZpZGVk IHRoZSBidWZmZXIgaXMgbG9uZyBlbm91Z2ggeW91IGNhbiBhbHNvIGRvIGEgbWlzYWxpZ25lZCB3 cml0ZQ0KdG8gdGhlIGVuZCBvZiB0aGUgYnVmZmVyIGJlZm9yZSBmaWxsaW5nIGZyb20gdGhlIHN0 YXJ0Lg0KDQpJIHN1c3BlY3QgeW91IG1heSBuZWVkIGVpdGhlciBiYXJyaWVyKCkgb3IgdXNlIGEg cHRyIHRvIHBhY2tlZA0KdG8gYXZvaWQgdGhlIHBlcnZlcnRlZCAndW5kZWZpbmVkIGJlaGF2aW91 cicgZnViYXIuJw0KDQoJRGF2aWQNCg0KLQ0KUmVnaXN0ZXJlZCBBZGRyZXNzIExha2VzaWRlLCBC cmFtbGV5IFJvYWQsIE1vdW50IEZhcm0sIE1pbHRvbiBLZXluZXMsIE1LMSAxUFQsIFVLDQpSZWdp c3RyYXRpb24gTm86IDEzOTczODYgKFdhbGVzKQ0K