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=-2.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_SANE_1 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 7B0F3C32792 for ; Sat, 5 Oct 2019 05:21:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3F3C4222C0 for ; Sat, 5 Oct 2019 05:21:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="HfUfxymk" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726446AbfJEFVV (ORCPT ); Sat, 5 Oct 2019 01:21:21 -0400 Received: from userp2120.oracle.com ([156.151.31.85]:53380 "EHLO userp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725796AbfJEFVV (ORCPT ); Sat, 5 Oct 2019 01:21:21 -0400 Received: from pps.filterd (userp2120.oracle.com [127.0.0.1]) by userp2120.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x955IiOg104082; Sat, 5 Oct 2019 05:21:05 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=date : from : to : cc : subject : message-id : references : mime-version : content-type : in-reply-to; s=corp-2019-08-05; bh=YO7N6zrJN20qxv51KNIJ1RDPqPhAFHU5PJDenYif458=; b=HfUfxymk0qniVqylT8ZduKZATKDp8DkvqFhsAQHKu9bA7p5biSwG3VMt32YTsFJyMYgM /V7VaotUpFN4bGtldpm015CQ8v9MyPTQ2cTP3NltlStStqnVBZAePm84ZKO/44PtoCVo 28d49wrPjzWBTi4B/o8r7ZWGtWt//eVQ99HnHyS+5F2EOgMkXZ6AL4pIy5xc+NZnoFbI 7BO4iOP1BpuMXvLRaPMFNBJNfZdoXxqhC3XKaqeLk7Ggww9uBeKScKVTfDyqQDt3MuIN YJMjLbHXfpx76GmnTD8rFMyEONBn+CrhoZzoJvrYALznIBIq9EvuNrBCs1hJ4tooHdeV sQ== Received: from aserp3020.oracle.com (aserp3020.oracle.com [141.146.126.70]) by userp2120.oracle.com with ESMTP id 2vektr06va-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sat, 05 Oct 2019 05:21:05 +0000 Received: from pps.filterd (aserp3020.oracle.com [127.0.0.1]) by aserp3020.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x955I01H078674; Sat, 5 Oct 2019 05:21:04 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by aserp3020.oracle.com with ESMTP id 2vek0an87q-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sat, 05 Oct 2019 05:21:04 +0000 Received: from abhmp0002.oracle.com (abhmp0002.oracle.com [141.146.116.8]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id x955L2Ng007497; Sat, 5 Oct 2019 05:21:02 GMT Received: from kadam (/41.57.98.10) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Fri, 04 Oct 2019 22:21:02 -0700 Date: Sat, 5 Oct 2019 08:20:55 +0300 From: Dan Carpenter To: "Marciniszyn, Mike" Cc: "linux-rdma@vger.kernel.org" , Laura Abbott , Greg KH , "Dalessandro, Dennis" , "Hiatt, Don" , Kees Cook Subject: Re: [bug report] IB/hfi1: Eliminate allocation while atomic Message-ID: <20191005052055.GB21515@kadam> References: <20191002121520.GA11064@mwanda> <3452a307-5f87-4587-b289-63ea8bc594b5@intel.com> <32E1700B9017364D9B60AED9960492BC72911CA9@ORSMSX160.amr.corp.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <32E1700B9017364D9B60AED9960492BC72911CA9@ORSMSX160.amr.corp.intel.com> User-Agent: Mutt/1.9.4 (2018-02-28) X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9400 signatures=668684 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=921 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1908290000 definitions=main-1910050047 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9400 signatures=668684 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1908290000 definitions=main-1910050048 Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org On Fri, Oct 04, 2019 at 09:09:12PM +0000, Marciniszyn, Mike wrote: > > > > Thanks Dan, we actually got a separate out-of-band email about this. We > > are working up a fix right now. > > > > -Denny > > Dan, > > This just hit the list in https://marc.info/?l=linux-rdma&m=157022217927143&w=2. > > Can you take a look? > > You mention a change in dma_map_single(). > > Do you have an details on that? Kees posted a patch for that after I emailed you. https://lkml.org/lkml/2019/10/2/866 regards, dan carpenter