From: Heiko Carstens <heiko.carstens@de.ibm.com>
To: Michal Hocko <mhocko@kernel.org>
Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [-next] memory hotplug regression
Date: Tue, 30 May 2017 14:37:24 +0200 [thread overview]
Message-ID: <20170530123724.GC4874@osiris> (raw)
In-Reply-To: <20170530121806.GD7969@dhcp22.suse.cz>
On Tue, May 30, 2017 at 02:18:06PM +0200, Michal Hocko wrote:
> > So ZONE_DMA ends within ZONE_NORMAL. This shouldn't be possible, unless
> > this restriction is gone?
>
> The patch below should help.
It does fix this specific problem, but introduces a new one:
# echo online_movable > /sys/devices/system/memory/memory16/state
# cat /sys/devices/system/memory/memory16/valid_zones
Movable
# echo offline > /sys/devices/system/memory/memory16/state
# cat /sys/devices/system/memory/memory16/valid_zones
<--- no output
Memory block 16 is the only one I onlined and offlineto ZONE_MOVABLE.
WARNING: multiple messages have this Message-ID (diff)
From: Heiko Carstens <heiko.carstens@de.ibm.com>
To: Michal Hocko <mhocko@kernel.org>
Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [-next] memory hotplug regression
Date: Tue, 30 May 2017 14:37:24 +0200 [thread overview]
Message-ID: <20170530123724.GC4874@osiris> (raw)
In-Reply-To: <20170530121806.GD7969@dhcp22.suse.cz>
On Tue, May 30, 2017 at 02:18:06PM +0200, Michal Hocko wrote:
> > So ZONE_DMA ends within ZONE_NORMAL. This shouldn't be possible, unless
> > this restriction is gone?
>
> The patch below should help.
It does fix this specific problem, but introduces a new one:
# echo online_movable > /sys/devices/system/memory/memory16/state
# cat /sys/devices/system/memory/memory16/valid_zones
Movable
# echo offline > /sys/devices/system/memory/memory16/state
# cat /sys/devices/system/memory/memory16/valid_zones
<--- no output
Memory block 16 is the only one I onlined and offlineto ZONE_MOVABLE.
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next prev parent reply other threads:[~2017-05-30 12:37 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-24 8:20 [-next] memory hotplug regression Heiko Carstens
2017-05-24 8:20 ` Heiko Carstens
2017-05-24 8:39 ` Michal Hocko
2017-05-24 8:39 ` Michal Hocko
2017-05-26 12:25 ` Heiko Carstens
2017-05-26 12:25 ` Heiko Carstens
2017-05-29 8:52 ` Michal Hocko
2017-05-29 8:52 ` Michal Hocko
2017-05-29 10:11 ` Heiko Carstens
2017-05-29 10:11 ` Heiko Carstens
2017-05-29 10:45 ` Michal Hocko
2017-05-29 10:45 ` Michal Hocko
2017-05-30 12:18 ` Michal Hocko
2017-05-30 12:18 ` Michal Hocko
2017-05-30 12:37 ` Heiko Carstens [this message]
2017-05-30 12:37 ` Heiko Carstens
2017-05-30 14:32 ` Michal Hocko
2017-05-30 14:32 ` Michal Hocko
2017-05-30 14:55 ` Heiko Carstens
2017-05-30 14:55 ` Heiko Carstens
2017-05-30 15:04 ` Michal Hocko
2017-05-30 15:04 ` Michal Hocko
2017-05-31 6:24 ` Michal Hocko
2017-05-31 6:24 ` Michal Hocko
2017-05-31 6:25 ` [PATCH 1/2] mm, memory_hotplug: fix MMOP_ONLINE_KEEP behavior Michal Hocko
2017-05-31 6:25 ` Michal Hocko
2017-05-31 6:26 ` [PATCH 2/2] mm, memory_hotplug: do not assume ZONE_NORMAL is default kernel zone Michal Hocko
2017-05-31 6:26 ` Michal Hocko
2017-06-01 6:49 ` [-next] memory hotplug regression Heiko Carstens
2017-06-01 6:49 ` Heiko Carstens
2017-06-01 7:13 ` Michal Hocko
2017-06-01 7:13 ` Michal Hocko
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