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 1DE6EC4743F for ; Tue, 8 Jun 2021 15:00:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0667661183 for ; Tue, 8 Jun 2021 15:00:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233725AbhFHPCR (ORCPT ); Tue, 8 Jun 2021 11:02:17 -0400 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.85.151]:49688 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233716AbhFHPCP (ORCPT ); Tue, 8 Jun 2021 11:02:15 -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-162-9RBwFXs0Nk6I40uBzgaFIw-1; Tue, 08 Jun 2021 16:00:19 +0100 X-MC-Unique: 9RBwFXs0Nk6I40uBzgaFIw-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 15.0.1497.18; Tue, 8 Jun 2021 16:00:17 +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, 8 Jun 2021 16:00:17 +0100 From: David Laight To: 'Christoph Hellwig' , Guo Ren CC: Nick Kossifidis , Drew Fustini , Anup Patel , Palmer Dabbelt , "wefu@redhat.com" , =?utf-8?B?V2VpIFd1ICjlkLTkvJ8p?= , linux-riscv , "Linux Kernel Mailing List" , linux-arch , "linux-sunxi@lists.linux.dev" , Guo Ren , "Paul Walmsley" , Benjamin Koch , Matteo Croce , Wei Fu Subject: RE: [PATCH RFC 0/3] riscv: Add DMA_COHERENT support Thread-Topic: [PATCH RFC 0/3] riscv: Add DMA_COHERENT support Thread-Index: AQHXW2Yf+E+HbgFRkkm3Xv2DTkp7y6sKNaKQ Date: Tue, 8 Jun 2021 15:00:17 +0000 Message-ID: <2db975b5f24149b19191120b9f0f506b@AcuMS.aculab.com> References: <1621400656-25678-1-git-send-email-guoren@kernel.org> <20210519052048.GA24853@lst.de> <20210519064435.GA3076809@x1> <20210519065352.GA31590@lst.de> <29733b0931d9dd6a2f0b6919067c7efe@mailhost.ics.forth.gr> <20210607062701.GB24060@lst.de> In-Reply-To: <20210607062701.GB24060@lst.de> 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 RnJvbTogQ2hyaXN0b3BoIEhlbGx3aWcNCj4gU2VudDogMDcgSnVuZSAyMDIxIDA3OjI3DQo+IA0K PiBPbiBNb24sIEp1biAwNywgMjAyMSBhdCAxMToxOTowM0FNICswODAwLCBHdW8gUmVuIHdyb3Rl Og0KPiA+ID5Gcm9tIExpbnV4IG5vbi1jb2hlcmVuY3kgdmlldywgd2UgbmVlZDoNCj4gPiAgLSBO b24tY2FjaGUgKyBTdHJvbmcgT3JkZXIgUFRFIGF0dHJpYnV0ZXMgdG8gZGVhbCB3aXRoIGRyaXZl cnMnIERNQSBkZXNjcmlwdG9ycw0KPiA+ICAtIE5vbi1jYWNoZSArIHdlYWsgb3JkZXIgdG8gZGVh bCB3aXRoIGZyYW1lYnVmZmVyIGRyaXZlcnMNCj4gPiAgLSBDTU8gZG1hX3N5bmMgdG8gc3luYyBj YWNoZSB3aXRoIERNQSBkZXZpY2VzDQo+IA0KPiBUaGlzIGlzIG5vdCBzdHJpY3RseSB0cnVlLiAg QXQgdGhlIHZlcnkgbWluaW11bSB5b3Ugb25seSBuZWVkIGNhY2hlDQo+IGludmFsaWRhdGlvbiBh bmQgd3JpdGViYWNrIGluc3RydWN0aW9ucy4gIEZvciBleGFtcGxlIGVhcmx5IHBhcmlzYw0KPiBD UFVzIGFuZCBzb21lIG02OGtub21tdSBTT0NzIGhhdmUgbm8gc3VwcG9ydCBmb3IgdW5jYWNoZWQg YXJlYXMgYXQgYWxsLA0KPiBhbmQgTGludXggd29ya3MuICBCdXQgdG8gYmUgZmFpciB0aGlzIGlz IHZlcnkgcGFpbmZ1bCBhbmQgc3VwcG9ydHMgb25seQ0KPiB2ZXJ5IGxpbWl0ZWQgcGVyaXBoYWxz LiAgU28gZm9yIG1vZGVybiBmdWxsIExpbnV4IHN1cHBvcnQgc29tZSB1bmNhaGVkDQo+IG1lbW9y eSBpcyBhZHZpc2FibGUuICBCdXQgdGhhdCBkb2Vzbid0IGhhdmUgdG8gYmUgdXNpbmcgUFRFIGF0 dHJpYnV0ZXMuDQo+IEl0IGNvdWxkIGFsc28gYmUgcGh5c2ljYWwgbWVtb3J5IHJlZ2lvbnMgdGhh dCBhcmUgZWl0aGVyIHRvdGFsbHkgZml4ZWQNCj4gb3Igc29tZXdoYXQgZHluYW1pYy4NCg0KSXQg aXMgYWxtb3N0IGltcG9zc2libGUgdG8gaW50ZXJmYWNlIHRvIG1hbnkgZXRoZXJuZXQgY2hpcHMg d2l0aG91dA0KZWl0aGVyIGNvaGVyZW50IG9yIHVuY2FjaGVkIG1lbW9yeSBmb3IgdGhlIGRlc2Ny aXB0b3IgcmluZ3MuDQpUaGUgc3RhdHVzIGJpdHMgb24gdGhlIHRyYW5zbWl0IHJpbmcgYXJlIHBh cnRpY3VsYXJseSBwcm9ibGVtYXRpYy4NCg0KVGhlIHJlY2VpdmUgcmluZyBjYW4gYmUgZG9uZSB3 aXRoIHdyaXRlYmFjaytpbnZhbGlkYXRlIHByb3ZpZGVkIHlvdQ0KZmlsbCBhIGNhY2hlIGxpbmUg YXQgYSB0aW1lLg0KDQoJRGF2aWQNCg0KLQ0KUmVnaXN0ZXJlZCBBZGRyZXNzIExha2VzaWRlLCBC cmFtbGV5IFJvYWQsIE1vdW50IEZhcm0sIE1pbHRvbiBLZXluZXMsIE1LMSAxUFQsIFVLDQpSZWdp c3RyYXRpb24gTm86IDEzOTczODYgKFdhbGVzKQ0K