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=-0.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, T_DKIMWL_WL_HIGH,UNPARSEABLE_RELAY autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by aws-us-west-2-korg-lkml-1.web.codeaurora.org (Postfix) with ESMTP id F0D19C433EF for ; Wed, 13 Jun 2018 17:14:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A4B67208D4 for ; Wed, 13 Jun 2018 17:14:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="jtzJ0G2A" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A4B67208D4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=oracle.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935367AbeFMROy (ORCPT ); Wed, 13 Jun 2018 13:14:54 -0400 Received: from aserp2130.oracle.com ([141.146.126.79]:35208 "EHLO aserp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934817AbeFMROv (ORCPT ); Wed, 13 Jun 2018 13:14:51 -0400 Received: from pps.filterd (aserp2130.oracle.com [127.0.0.1]) by aserp2130.oracle.com (8.16.0.22/8.16.0.22) with SMTP id w5DHDoFp175761; Wed, 13 Jun 2018 17:14:43 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=to : cc : subject : from : references : date : in-reply-to : message-id : mime-version : content-type; s=corp-2017-10-26; bh=T8CBkINUMRhHcPPbFW8oss6DM5Rv12u3zAEvXWJRSmE=; b=jtzJ0G2AizVH5xtppsV7fYm429jZW4x0GrGbS8YvnQhVhf2EbRLi8oF1uvHEnl/JEhbp bZQzcqwOrdfUjUkNdgx41+HEUXfsT1HhOi3yIJnOjBsiXVhXRbimuh9YnLYp4eQrnI6w eXFoilnIoW/goLUXxC+SiiCJZnhHw7bxg6TvSTpb5eh8yzgsOLPwHIWpSdLkTYhPiw/r TPhMZbTaTSNtV1T4sz1Lh/ZWKujeuuYjdSsDC1dQvZtFGBu3/7mvmCKBahTpwlhBm5Sr d/AhNNU/patrawgWNaYZQNw0BRwByyGmV194zl6g6WYtt5s/oZaTBbYwXO9D9ekDHFrr OA== Received: from aserv0022.oracle.com (aserv0022.oracle.com [141.146.126.234]) by aserp2130.oracle.com with ESMTP id 2jk0xqsphs-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 13 Jun 2018 17:14:43 +0000 Received: from userv0121.oracle.com (userv0121.oracle.com [156.151.31.72]) by aserv0022.oracle.com (8.14.4/8.14.4) with ESMTP id w5DHEguC016248 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 13 Jun 2018 17:14:42 GMT Received: from abhmp0001.oracle.com (abhmp0001.oracle.com [141.146.116.7]) by userv0121.oracle.com (8.14.4/8.13.8) with ESMTP id w5DHEe1k029346; Wed, 13 Jun 2018 17:14:40 GMT Received: from ca-mkp.ca.oracle.com (/10.159.214.123) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Wed, 13 Jun 2018 10:14:40 -0700 To: Arnd Bergmann Cc: Brian King , "James E.J. Bottomley" , "Martin K. Petersen" , Kees Cook , Hannes Reinecke , Souptick Joarder , Wen Xiong , Sinan Kaya , Bart Van Assche , linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] scsi: ipr: fix build on 32-bit architectures From: "Martin K. Petersen" Organization: Oracle Corporation References: <20180608144617.2900894-1-arnd@arndb.de> Date: Wed, 13 Jun 2018 13:14:36 -0400 In-Reply-To: <20180608144617.2900894-1-arnd@arndb.de> (Arnd Bergmann's message of "Fri, 8 Jun 2018 16:46:00 +0200") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=8923 signatures=668702 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=254 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1805220000 definitions=main-1806130184 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Arnd, > the conclusion was that drivers should generally assume that the > barrier implied by writel() is sufficient for ordering DMA, so this > reverts his change and instead removes the extraneous wmb() before it, > which is no longer needed on any architecture now. Applied to 4.18/scsi-fixes and squashed with Sinan's patch. -- Martin K. Petersen Oracle Linux Engineering