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[2620:137:e000::3:4]) by mx.google.com with ESMTPS id g8-20020a056a0023c800b0068fba70d25dsi9974642pfc.33.2023.09.19.07.00.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Sep 2023 07:00:52 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:4 as permitted sender) client-ip=2620:137:e000::3:4; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:4 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 howler.vger.email (Postfix) with ESMTP id 9D0D98225CBA; Tue, 19 Sep 2023 06:23:38 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at howler.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232263AbjISNX3 convert rfc822-to-8bit (ORCPT + 99 others); Tue, 19 Sep 2023 09:23:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38174 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231960AbjISNX1 (ORCPT ); Tue, 19 Sep 2023 09:23:27 -0400 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 F1802F5 for ; Tue, 19 Sep 2023 06:23:20 -0700 (PDT) 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-53-kQOjcUm9Mdygv-A1vaw1tA-1; Tue, 19 Sep 2023 14:23:13 +0100 X-MC-Unique: kQOjcUm9Mdygv-A1vaw1tA-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; Tue, 19 Sep 2023 14:23:08 +0100 Received: from AcuMS.Aculab.com ([::1]) by AcuMS.aculab.com ([::1]) with mapi id 15.00.1497.048; Tue, 19 Sep 2023 14:23:08 +0100 From: David Laight To: 'Matthew Wilcox' , Greg Ungerer CC: "linux-kernel@vger.kernel.org" , "linux-fsdevel@vger.kernel.org" , "linux-arch@vger.kernel.org" , "torvalds@linux-foundation.org" , "Nicholas Piggin" Subject: RE: [PATCH 09/17] m68k: Implement xor_unlock_is_negative_byte Thread-Topic: [PATCH 09/17] m68k: Implement xor_unlock_is_negative_byte Thread-Index: AQHZ6Kr+hLdybFnA00ugx5L/MFgM8bAiJxPQ Date: Tue, 19 Sep 2023 13:23:08 +0000 Message-ID: References: <20230915183707.2707298-1-willy@infradead.org> <20230915183707.2707298-10-willy@infradead.org> <6e409d5f-a419-07b7-c82c-4e80fe19c6ba@westnet.com.au> 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 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H5,RCVD_IN_MSPIKE_WL, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net 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 (howler.vger.email [0.0.0.0]); Tue, 19 Sep 2023 06:23:38 -0700 (PDT) > Well, that sucks. What do you suggest for Coldfire? Can you just do a 32bit xor ? Unless you've got smp m68k I'd presume it is ok? (And assuming you aren't falling off a page.) David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)