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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8D36DC4332F for ; Fri, 18 Feb 2022 09:30:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233565AbiBRJaz (ORCPT ); Fri, 18 Feb 2022 04:30:55 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:36576 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233463AbiBRJay (ORCPT ); Fri, 18 Feb 2022 04:30:54 -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 ESMTP id CFB06246368 for ; Fri, 18 Feb 2022 01:30:37 -0800 (PST) Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id uk-mta-129-Mn8CKvyFPNSuM9Bkc4i3uw-1; Fri, 18 Feb 2022 09:30:35 +0000 X-MC-Unique: Mn8CKvyFPNSuM9Bkc4i3uw-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 15.0.1497.28; Fri, 18 Feb 2022 09:30:32 +0000 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.028; Fri, 18 Feb 2022 09:30:32 +0000 From: David Laight To: 'Andy Lutomirski' , Arnd Bergmann CC: Linus Torvalds , Christoph Hellwig , "linux-arch@vger.kernel.org" , "linux-mm@kvack.org" , "linux-api@vger.kernel.org" , "arnd@arndb.de" , "linux-kernel@vger.kernel.org" , "viro@zeniv.linux.org.uk" , "linux@armlinux.org.uk" , "will@kernel.org" , "guoren@kernel.org" , "bcain@codeaurora.org" , "geert@linux-m68k.org" , "monstr@monstr.eu" , "tsbogend@alpha.franken.de" , "nickhu@andestech.com" , "green.hu@gmail.com" , "dinguyen@kernel.org" , "shorne@gmail.com" , "deller@gmx.de" , "mpe@ellerman.id.au" , "peterz@infradead.org" , "mingo@redhat.com" , "mark.rutland@arm.com" , "hca@linux.ibm.com" , "dalias@libc.org" , "davem@davemloft.net" , "richard@nod.at" , "x86@kernel.org" , "jcmvbkbc@gmail.com" , "ebiederm@xmission.com" , "akpm@linux-foundation.org" , "ardb@kernel.org" , "linux-alpha@vger.kernel.org" , "linux-snps-arc@lists.infradead.org" , "linux-csky@vger.kernel.org" , "linux-hexagon@vger.kernel.org" , "linux-ia64@vger.kernel.org" , "linux-m68k@lists.linux-m68k.org" , "linux-mips@vger.kernel.org" , "openrisc@lists.librecores.org" , "linux-parisc@vger.kernel.org" , "linuxppc-dev@lists.ozlabs.org" , "linux-riscv@lists.infradead.org" , "linux-s390@vger.kernel.org" , "linux-sh@vger.kernel.org" , "sparclinux@vger.kernel.org" , "linux-um@lists.infradead.org" , "linux-xtensa@linux-xtensa.org" Subject: RE: [PATCH v2 13/18] uaccess: generalize access_ok() Thread-Topic: [PATCH v2 13/18] uaccess: generalize access_ok() Thread-Index: AQHYJDLDvIZKe0fPGEirizFtCzB+zayZCg2g Date: Fri, 18 Feb 2022 09:30:32 +0000 Message-ID: <93a1ee797e9d4f789dff85a3c0f0c232@AcuMS.aculab.com> References: <20220216131332.1489939-1-arnd@kernel.org> <20220216131332.1489939-14-arnd@kernel.org> 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-api@vger.kernel.org RnJvbTogQW5keSBMdXRvbWlyc2tpDQo+IFNlbnQ6IDE3IEZlYnJ1YXJ5IDIwMjIgMTk6MTUNCi4u Lg0KPiBUaGlzIGlzbid0IGFjdHVhbGx5IG9wdGltYWwuICBPbiB4ODYsIFRBU0tfU0laRV9NQVgg aXMgYSBiaXphcnJlDQo+IGNvbnN0YW50IHRoYXQgaGFzIGEgdmVyeSBzcGVjaWZpYyB2YWx1ZSB0 byB3b3JrIGFyb3VuZCBhIGJ1Z15XZGVzaWduDQo+IGVycm9yXldmZWF0dXJlIG9mIEludGVsIENQ VXMuICBUQVNLX1NJWkVfTUFYIGlzIHRoZSBtYXhpbXVtIGFkZHJlc3MgYXQNCj4gd2hpY2ggdXNl cnNwYWNlIGlzIHBlcm1pdHRlZCB0byBhbGxvY2F0ZSBtZW1vcnksIGJ1dCB0aGVyZSBpcyBhIGh1 Z2UNCj4gZ2FwIGJldHdlZW4gdXNlciBhbmQga2VybmVsIGFkZHJlc3NlcywgYW5kIGFueSB2YWx1 ZSBpbiB0aGUgZ2FwIHdvdWxkDQo+IGJlIGFkZXF1YXRlIGZvciB0aGUgY29tcGFyaXNvbi4gIElm IHdlIHdhbnRlZCB0byBvcHRpbWl6ZSB0aGlzLCBzaW1wbHkNCj4gY2hlY2tpbmcgdGhlIGhpZ2gg Yml0ICh3aGljaCB4ODYgY2FuIGRvIHdpdGhvdXQgYW55IGltbWVkaWF0ZQ0KPiBjb25zdGFudHMg YXQgYWxsKSB3b3VsZCBiZSBzdWZmaWNpZW50IGFuZCwgZm9yIGFuIGFjY2VzcyBrbm93biB0byBm aXQNCj4gaW4gMzIgYml0cywgb25lIGNvdWxkIGdldCBldmVuIGZhbmNpZXIgYW5kIGNvbXBsZXRl bHkgaWdub3JlIHRoZSBzaXplDQo+IG9mIHRoZSBhY2Nlc3MuICAoRm9yIGFjY2Vzc2VzIG5vdCBr bm93biB0byBmaXQgaW4gMzIgYml0cywgSSBzdXNwZWN0DQo+IHNvbWUgY3JlYXRpdml0eSBjb3Vs ZCBzdGlsbCBjb21lIHVwIHdpdGggYSBjb25zdHJ1Y3Rpb24gdGhhdCdzDQo+IHN1YnN0YW50aWFs bHkgZmFzdGVyIHRoYW4gdGhlIG9uZSBpbiB5b3VyIHBhdGNoLikNCj4gDQo+IFNvIHRoZXJlJ3Mg cGxlbnR5IG9mIHJvb20gZm9yIG9wdGltaXphdGlvbiBoZXJlLg0KPiANCj4gKFRoaXMgaXMgbm90 IGluIGFueSByZXNwZWN0IGEgTkFLIC0tIGl0J3MganVzdCBhbiBvYnNlcnZhdGlvbiB0aGF0DQo+ IHRoaXMgY291bGQgYmUgZXZlbiBiZXR0ZXIuKQ0KDQpGb3IgNjRiaXQgYXJjaCB0aGF0IHVzZSB0 aGUgdG9wIGJpdCB0byBzZXBhcmF0ZSB1c2VyL2tlcm5lbA0KeW91IGNhbiB0ZXN0ICcoYWRkciB8 IHNpemUpID4+IDYyKScuDQpUaGUgY29tcGlsZXIgb3B0aW1pc2VzIG91dCBjb25zdGFudCBzaXpl cy4NCg0KVGhpcyBoYXMgYWxsIGJlZW4gbWVudGlvbmVkIGEgbG90IG9mIHRpbWVzLg0KWW91IGRv IGdldCBkaWZmZXJlbnQgZmF1bHQgdHlwZXMuDQoNCk9UT0ggYW4gZXhwbGljaXQgY2hlY2sgZm9y IGNvbnN0YW50IHNpemUgKGxlc3MgdGhhbiBzb21ldGhpbmcgYmlnKQ0KY2FuIHVzZSB0aGUgY2hl YXBlciB0ZXN0IG9mIHRoZSBzaWduIGJpdC4NCkJpZyBjb25zdGFudCBzaXplcyBjb3VsZCBiZSBj b21waWxlIHRpbWUgZXJyb3JzLg0KDQoJRGF2aWQNCg0KLQ0KUmVnaXN0ZXJlZCBBZGRyZXNzIExh a2VzaWRlLCBCcmFtbGV5IFJvYWQsIE1vdW50IEZhcm0sIE1pbHRvbiBLZXluZXMsIE1LMSAxUFQs IFVLDQpSZWdpc3RyYXRpb24gTm86IDEzOTczODYgKFdhbGVzKQ0K