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[23.128.96.33]) by mx.google.com with ESMTPS id d24-20020a17090ab31800b002866c761c77si7739496pjr.176.2023.12.06.03.39.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 06 Dec 2023 03:39:19 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.33 as permitted sender) client-ip=23.128.96.33; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.33 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=aculab.com Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by lipwig.vger.email (Postfix) with ESMTP id 1E35780CB15E; Wed, 6 Dec 2023 03:39:17 -0800 (PST) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.11 at lipwig.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1377692AbjLFLi4 (ORCPT + 99 others); Wed, 6 Dec 2023 06:38:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46338 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1377628AbjLFLiz (ORCPT ); Wed, 6 Dec 2023 06:38:55 -0500 Received: from eu-smtp-delivery-151.mimecast.com (eu-smtp-delivery-151.mimecast.com [185.58.86.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3D8228F for ; Wed, 6 Dec 2023 03:39:01 -0800 (PST) Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) by relay.mimecast.com with ESMTP with both STARTTLS and AUTH (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id uk-mta-11-VR77vVbMOGemeyUZCeX2uw-1; Wed, 06 Dec 2023 11:38:59 +0000 X-MC-Unique: VR77vVbMOGemeyUZCeX2uw-1 Received: from AcuMS.Aculab.com (10.202.163.6) by AcuMS.aculab.com (10.202.163.6) with Microsoft SMTP Server (TLS) id 15.0.1497.48; Wed, 6 Dec 2023 11:38:45 +0000 Received: from AcuMS.Aculab.com ([::1]) by AcuMS.aculab.com ([::1]) with mapi id 15.00.1497.048; Wed, 6 Dec 2023 11:38:45 +0000 From: David Laight To: 'Jens Axboe' , Arnaud POULIQUEN , Sumit Garg , Al Viro CC: Jens Wiklander , Christoph Hellwig , "op-tee@lists.trustedfirmware.org" , "linux-kernel@vger.kernel.org" , Christian Brauner , Christian Brauner Subject: RE: [PATCH v4] tee: Use iov_iter to better support shared buffer registration Thread-Topic: [PATCH v4] tee: Use iov_iter to better support shared buffer registration Thread-Index: AQHaJ6OPtlOyPWs+/0ib6E4SGjqISbCcH7JQ Date: Wed, 6 Dec 2023 11:38:45 +0000 Message-ID: <7582460ba52e413eaab26d37fb56beed@AcuMS.aculab.com> References: <20231129164439.1130903-1-arnaud.pouliquen@foss.st.com> <60b67bd5-36c3-4318-9a2b-bcf172681d45@foss.st.com> <40902a86-3b88-45bc-bb6f-2de0eb48dc9d@foss.st.com> <438a8b44-ea5f-4e13-bd7e-e1c2e2a481c4@kernel.dk> <206b634d-1d10-4057-ad8d-93e29fda5d6e@kernel.dk> In-Reply-To: <206b634d-1d10-4057-ad8d-93e29fda5d6e@kernel.dk> 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 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 X-Spam-Status: No, score=-0.8 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lipwig.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (lipwig.vger.email [0.0.0.0]); Wed, 06 Dec 2023 03:39:17 -0800 (PST) PiA+IEFzIEplbnMgV2lrbGFuZGVyIGhhcyBwcm9wb3NlZCB1c2luZyBpb3ZfaXRlcl91YnVmKCkg aW5zdGVhZCBvZg0KPiA+IGltcG9ydF91YnVmKCksIHNob3VsZCBJIHByb3Bvc2UgYSBwYXRjaCB1 cGRhdGluZyBpbXBvcnRfdWJ1ZigpIGFuZA0KPiA+IGltcG9ydF9zaW5nbGVfcmFuZ2UoKT8gT3Ig d291bGQgeW91IHByZWZlciB0aGF0IHdlIGtlZXAgdGhlIGZ1bmN0aW9ucw0KPiA+IHVuY2hhbmdl ZCBmb3IgdGhlIHRpbWUgYmVpbmc/DQo+IA0KPiBBcmd1YWJseSBpdCBzaG91bGQgYmUgY29uc2lz dGVudCB3aXRoIGlvdmVjIGltcG9ydHMsIHdoaWNoIHJldHVybiB0aGUNCj4gbGVuZ3RoIChvciBl cnJvcikuIEJ1dCBpdCBtaWdodCBiZSBzYWZlciB0byBqdXN0IGNoZWNrIGFjY2Vzc19vaygpDQo+ IGZpcnN0IGFuZCB0aGVuIHRydW5jYXRlIGF0IGxlYXN0LCB2cyB3aGF0IGlzIHRoZXJlIG5vdy4N Cg0KSXMgdGhlIGFjY2Vzc19vaygpIGNoZWNrIGV2ZW4gbmVlZGVkIHdoZW4gc2V0dGluZyB1cCBh biBpb3ZfaXRlcj8NCkl0IGlzIGFsd2F5cyBjaGVja2VkIGFnYWluIHdoZW4gdGhlIGFjdHVhbCBj b3B5IGlzIGRvbmUuDQoNCkkgbG9va2VkIGF0IHRoaXMgYSB3aGlsZSBiYWNrIGFuZCBjb3VsZG4n dCBzZWUgYW55IGNvZGUgcGF0aHMgdGhhdA0KcmVsaWVkIG9uIHRoZSBlYXJseSBhY2Nlc3Nfb2so KSBjaGVjay4NCk1heWJlIGl0IGlzIGhpc3RvcmljPw0KDQoJRGF2aWQNCg0KLQ0KUmVnaXN0ZXJl ZCBBZGRyZXNzIExha2VzaWRlLCBCcmFtbGV5IFJvYWQsIE1vdW50IEZhcm0sIE1pbHRvbiBLZXlu ZXMsIE1LMSAxUFQsIFVLDQpSZWdpc3RyYXRpb24gTm86IDEzOTczODYgKFdhbGVzKQ0K