Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752845AbdDKJ7k (ORCPT ); Tue, 11 Apr 2017 05:59:40 -0400 Received: from mx1.redhat.com ([209.132.183.28]:56440 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751564AbdDKJ7j (ORCPT ); Tue, 11 Apr 2017 05:59:39 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 974D14DD62 Authentication-Results: ext-mx09.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx09.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=imammedo@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 974D14DD62 Date: Tue, 11 Apr 2017 11:59:31 +0200 From: Igor Mammedov To: Michal Hocko Cc: linux-mm@kvack.org, Andrew Morton , Mel Gorman , Vlastimil Babka , Andrea Arcangeli , Jerome Glisse , Reza Arbab , Yasuaki Ishimatsu , qiuxishi@huawei.com, Kani Toshimitsu , slaoub@gmail.com, Joonsoo Kim , Andi Kleen , David Rientjes , Daniel Kiper , Vitaly Kuznetsov , LKML , Dan Williams , Heiko Carstens , Lai Jiangshan , Martin Schwidefsky , Tobias Regnery Subject: Re: [PATCH -v2 0/9] mm: make movable onlining suck less Message-ID: <20170411115931.32659dd6@nial.brq.redhat.com> In-Reply-To: <20170411092306.GD6729@dhcp22.suse.cz> References: <20170410110351.12215-1-mhocko@kernel.org> <20170410162749.7d7f31c1@nial.brq.redhat.com> <20170410160941.GJ4618@dhcp22.suse.cz> <20170411083834.765c2201@nial.brq.redhat.com> <20170411092306.GD6729@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.38]); Tue, 11 Apr 2017 09:59:39 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2085 Lines: 37 On Tue, 11 Apr 2017 11:23:07 +0200 Michal Hocko wrote: > On Tue 11-04-17 08:38:34, Igor Mammedov wrote: > > for issue2: > > -enable-kvm -m 2G,slots=4,maxmem=4G -smp 4 -numa node -numa node \ > > -drive if=virtio,file=disk.img -kernel bzImage -append 'root=/dev/vda1' \ > > -object memory-backend-ram,id=mem1,size=256M -object memory-backend-ram,id=mem0,size=256M \ > > -device pc-dimm,id=dimm1,memdev=mem1,slot=1,node=0 -device pc-dimm,id=dimm0,memdev=mem0,slot=0,node=1 > > I must be doing something wrong here... > qemu-system-x86_64 -enable-kvm -monitor telnet:127.0.0.1:9999,server,nowait -net nic -net user,hostfwd=tcp:127.0.0.1:5555-:22 -serial file:test.qcow_serial.log -enable-kvm -m 2G,slots=4,maxmem=4G -smp 4 -numa node -numa node -object memory-backend-ram,id=mem1,size=256M -object memory-backend-ram,id=mem0,size=256M -device pc-dimm,id=dimm1,memdev=mem1,slot=1,node=0 -device pc-dimm,id=dimm0,memdev=mem0,slot=0,node=1 -drive file=test.qcow,if=ide,index=0 > > for i in $(seq 0 3) > do > sh probe_memblock.sh $i > done dimm to node mapping comes from ACPI subsystem (_PXM object in memory device), which adds memory blocks automatically on hotplug. you probably don't have ACPI_HOTPLUG_MEMORY config option enabled. > > # ls -l /sys/devices/system/memory/memory3?/node* > lrwxrwxrwx 1 root root 0 Apr 11 11:21 /sys/devices/system/memory/memory32/node0 -> ../../node/node0 > lrwxrwxrwx 1 root root 0 Apr 11 11:21 /sys/devices/system/memory/memory33/node0 -> ../../node/node0 > lrwxrwxrwx 1 root root 0 Apr 11 11:21 /sys/devices/system/memory/memory34/node0 -> ../../node/node0 > lrwxrwxrwx 1 root root 0 Apr 11 11:21 /sys/devices/system/memory/memory35/node0 -> ../../node/node0 > > all of them end in the same node0 > > # grep . /sys/devices/system/memory/memory3?/valid_zones > /sys/devices/system/memory/memory32/valid_zones:Normal Movable > /sys/devices/system/memory/memory33/valid_zones:Normal Movable > /sys/devices/system/memory/memory34/valid_zones:Normal Movable > /sys/devices/system/memory/memory35/valid_zones:Normal Movable >