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Date: Tue, 11 Apr 2017 11:23:07 +0200
From: Michal Hocko <mhocko@kernel.org>
To: Igor Mammedov <imammedo@redhat.com>
Cc: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
        Mel Gorman <mgorman@suse.de>, Vlastimil Babka <vbabka@suse.cz>,
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        Reza Arbab <arbab@linux.vnet.ibm.com>,
        Yasuaki Ishimatsu <yasu.isimatu@gmail.com>, qiuxishi@huawei.com,
        Kani Toshimitsu <toshi.kani@hpe.com>, slaoub@gmail.com,
        Joonsoo Kim <js1304@gmail.com>, Andi Kleen <ak@linux.intel.com>,
        David Rientjes <rientjes@google.com>,
        Daniel Kiper <daniel.kiper@oracle.com>,
        Vitaly Kuznetsov <vkuznets@redhat.com>,
        LKML <linux-kernel@vger.kernel.org>,
        Dan Williams <dan.j.williams@gmail.com>,
        Heiko Carstens <heiko.carstens@de.ibm.com>,
        Lai Jiangshan <laijs@cn.fujitsu.com>,
        Martin Schwidefsky <schwidefsky@de.ibm.com>,
        Tobias Regnery <tobias.regnery@gmail.com>
Subject: Re: [PATCH -v2 0/9] mm: make movable onlining suck less
Message-ID: <20170411092306.GD6729@dhcp22.suse.cz>
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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

# 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

-- 
Michal Hocko
SUSE Labs