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=-5.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,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 7BCEBC433FE for ; Fri, 4 Dec 2020 08:13:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2CB3422285 for ; Fri, 4 Dec 2020 08:13:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728347AbgLDINr (ORCPT ); Fri, 4 Dec 2020 03:13:47 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:9948 "EHLO mx0b-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726122AbgLDINr (ORCPT ); Fri, 4 Dec 2020 03:13:47 -0500 Received: from pps.filterd (m0127361.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0B482uvd189493; Fri, 4 Dec 2020 03:12:46 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=subject : to : cc : references : from : message-id : date : mime-version : in-reply-to : content-type : content-transfer-encoding; s=pp1; bh=ihxf7PJh5l3HHItoamPpTYGJI1jYXP30TqwIpz+HddI=; b=TYSRebq62M6AXo8D2v54bUslXHUqXnA5gP9UepZ5rvnQyGbTejZOJojdL4wgxyhju6tu WhO0GC5mokvq1G/PYqvYryEZHIUw76EcScnWPlogPdlgjXtdusb9gzkeF/8Jg5xPXOGp AiAdp4aQFjWpRz56924WESQSnTV9zzXeIdO6BpgXYEpTqTDXpY8ImA1GMTnzxW+ZWG/j d5LEauvPD1GLQ/BeDGuq9XDgWQ3o8wAhEWYPR3M1j1iw5KhiL/RZxNdhP5knsTjnU72S yS/3DIaRuESdxCtb9CTNNjpLi27GbvsaX5gS3tWffzp8HjdhAaTuZBbFg0UNCIkJYVgZ Tg== Received: from ppma06ams.nl.ibm.com (66.31.33a9.ip4.static.sl-reverse.com [169.51.49.102]) by mx0a-001b2d01.pphosted.com with ESMTP id 357742xc2w-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 04 Dec 2020 03:12:46 -0500 Received: from pps.filterd (ppma06ams.nl.ibm.com [127.0.0.1]) by ppma06ams.nl.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 0B48CC0p025047; Fri, 4 Dec 2020 08:12:42 GMT Received: from b06cxnps4076.portsmouth.uk.ibm.com (d06relay13.portsmouth.uk.ibm.com [9.149.109.198]) by ppma06ams.nl.ibm.com with ESMTP id 354fpdcta0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 04 Dec 2020 08:12:42 +0000 Received: from d06av22.portsmouth.uk.ibm.com (d06av22.portsmouth.uk.ibm.com [9.149.105.58]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 0B48Cdba6029836 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 4 Dec 2020 08:12:39 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 489AD4C046; Fri, 4 Dec 2020 08:12:39 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 021BE4C040; Fri, 4 Dec 2020 08:12:39 +0000 (GMT) Received: from pomme.local (unknown [9.145.0.41]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 4 Dec 2020 08:12:38 +0000 (GMT) Subject: Re: [PATCH] powerpc/hotplug: assign hot added LMB to the right node To: Greg KH Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , Nathan Lynch , Scott Cheloha , stable@vger.kernel.org References: <20201203101514.33591-1-ldufour@linux.ibm.com> From: Laurent Dufour Message-ID: <0fbf1f3c-908e-34ee-637c-b29f15e9dea8@linux.ibm.com> Date: Fri, 4 Dec 2020 09:12:38 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.5.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312,18.0.737 definitions=2020-12-04_02:2020-12-04,2020-12-04 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 spamscore=0 priorityscore=1501 mlxscore=0 suspectscore=0 impostorscore=0 lowpriorityscore=0 bulkscore=0 adultscore=0 clxscore=1011 malwarescore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2012040043 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Le 03/12/2020 à 19:25, Greg KH a écrit : > On Thu, Dec 03, 2020 at 11:15:14AM +0100, Laurent Dufour wrote: >> This patch applies to 5.9 and earlier kernels only. >> >> Since 5.10, this has been fortunately fixed by the commit >> e5e179aa3a39 ("pseries/drmem: don't cache node id in drmem_lmb struct"). > > Why can't we just backport that patch instead? It's almost always > better to do that than to have a one-off patch, as almost always those > have bugs in them. That's a good option too. I was thinking that this 5.10 patch was not matching the stable release's guidelines since it was targeting performance issue, but since it is also fixing this issue, I'm certainly wrong. So, forget that patch. Thanks, Laurent.