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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Wed, 31 Jul 2019 18:15:18 +0100 Received: from d06av26.portsmouth.uk.ibm.com (d06av26.portsmouth.uk.ibm.com [9.149.105.62]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x6VHFGw050069666 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 31 Jul 2019 17:15:16 GMT Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4E48CAE056; Wed, 31 Jul 2019 17:15:16 +0000 (GMT) Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 918D8AE04D; Wed, 31 Jul 2019 17:15:13 +0000 (GMT) Received: from rapoport-lnx (unknown [9.148.206.240]) by d06av26.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Wed, 31 Jul 2019 17:15:13 +0000 (GMT) Date: Wed, 31 Jul 2019 20:15:11 +0300 From: Mike Rapoport To: Michal Hocko Cc: Hoan Tran OS , Will Deacon , Catalin Marinas , Heiko Carstens , "open list:MEMORY MANAGEMENT" , Paul Mackerras , "H . Peter Anvin" , "sparclinux@vger.kernel.org" , Alexander Duyck , "linux-s390@vger.kernel.org" , Michael Ellerman , "x86@kernel.org" , Christian Borntraeger , Ingo Molnar , Vlastimil Babka , Benjamin Herrenschmidt , Open Source Submission , Pavel Tatashin , Vasily Gorbik , Will Deacon , Borislav Petkov , Thomas Gleixner , "linux-arm-kernel@lists.infradead.org" , Oscar Salvador , "linux-kernel@vger.kernel.org" , Andrew Morton , "linuxppc-dev@lists.ozlabs.org" , "David S . Miller" , "willy@infradead.org" Subject: Re: microblaze HAVE_MEMBLOCK_NODE_MAP dependency (was Re: [PATCH v2 0/5] mm: Enable CONFIG_NODES_SPAN_OTHER_NODES by default for NUMA) References: <730368c5-1711-89ae-e3ef-65418b17ddc9@os.amperecomputing.com> <20190730081415.GN9330@dhcp22.suse.cz> <20190731062420.GC21422@rapoport-lnx> <20190731080309.GZ9330@dhcp22.suse.cz> <20190731111422.GA14538@rapoport-lnx> <20190731114016.GI9330@dhcp22.suse.cz> <20190731122631.GB14538@rapoport-lnx> <20190731130037.GN9330@dhcp22.suse.cz> <20190731142129.GA24998@rapoport-lnx> <20190731144114.GY9330@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190731144114.GY9330@dhcp22.suse.cz> User-Agent: Mutt/1.5.24 (2015-08-30) X-TM-AS-GCONF: 00 x-cbid: 19073117-0016-0000-0000-000002980793 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19073117-0017-0000-0000-000032F707ED Message-Id: <20190731171510.GB24998@rapoport-lnx> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-07-31_08:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=931 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1906280000 definitions=main-1907310172 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jul 31, 2019 at 04:41:14PM +0200, Michal Hocko wrote: > On Wed 31-07-19 17:21:29, Mike Rapoport wrote: > > On Wed, Jul 31, 2019 at 03:00:37PM +0200, Michal Hocko wrote: > > > > > > I am sorry, but I still do not follow. Who is consuming that node id > > > information when NUMA=n. In other words why cannot we simply do > > > > We can, I think nobody cared to change it. > > It would be great if somebody with the actual HW could try it out. > I can throw a patch but I do not even have a cross compiler in my > toolbox. Well, it compiles :) > > > diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c > > > index a015a951c8b7..3a47e8db8d1c 100644 > > > --- a/arch/microblaze/mm/init.c > > > +++ b/arch/microblaze/mm/init.c > > > @@ -175,14 +175,9 @@ void __init setup_memory(void) > > > > > > start_pfn = memblock_region_memory_base_pfn(reg); > > > end_pfn = memblock_region_memory_end_pfn(reg); > > > - memblock_set_node(start_pfn << PAGE_SHIFT, > > > - (end_pfn - start_pfn) << PAGE_SHIFT, > > > - &memblock.memory, 0); > > > + memory_present(0, start_pfn << PAGE_SHIFT, end_pfn << PAGE_SHIFT); > > > > memory_present() expects pfns, the shift is not needed. > > Right. > > -- > Michal Hocko > SUSE Labs > -- Sincerely yours, Mike.