From: qiuxishi@huawei•com (Xishi Qiu)
To: linux-arm-kernel@lists•infradead.org
Subject: [RFC PATCH 0/2] arm64: memory-hotplug: Add Memory Hotplug support
Date: Fri, 2 Dec 2016 09:49:39 +0800 [thread overview]
Message-ID: <5840D333.9050801@huawei.com> (raw)
In-Reply-To: <1480637999-4320-1-git-send-email-scott.branden@broadcom.com>
On 2016/12/2 8:19, Scott Branden wrote:
> This patchset is sent for comment to add memory hotplug support for ARM64
> based platforms. It follows hotplug code added for other architectures
> in the linux kernel.
>
> I tried testing the memory hotplug feature following documentation from
> Documentation/memory-hotplug.txt. I don't think it is working as expected
> - see below:
>
> To add memory to the system I did the following:
> echo 0x400000000 > /sys/devices/system/memory/probe
>
> The memory is displayed as system ram:
> cat /proc/iomem:
> 74000000-77ffffff : System RAM
> 74080000-748dffff : Kernel code
> 74950000-749d2fff : Kernel data
> 400000000-43fffffff : System RAM
>
> But does not seem to be added to the kernel memory.
> /proc/meminfo did not change.
>
> What else needs to be done so the memory is added to the kernel memory
> pool for normal allocation?
>
Hi Scott,
Do you mean it still don't support hod-add after apply this patchset?
Thanks,
Xishi Qiu
> Scott Branden (2):
> arm64: memory-hotplug: Add MEMORY_HOTPLUG, MEMORY_HOTREMOVE,
> MEMORY_PROBE
> arm64: defconfig: enable MEMORY_HOTPLUG config options
>
> arch/arm64/Kconfig | 10 ++++++++++
> arch/arm64/configs/defconfig | 3 +++
> arch/arm64/mm/init.c | 42 ++++++++++++++++++++++++++++++++++++++++++
> 3 files changed, 55 insertions(+)
>
next prev parent reply other threads:[~2016-12-02 1:49 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-02 0:19 [RFC PATCH 0/2] arm64: memory-hotplug: Add Memory Hotplug support Scott Branden
2016-12-02 0:19 ` [RFC PATCH 1/2] arm64: memory-hotplug: Add MEMORY_HOTPLUG, MEMORY_HOTREMOVE, MEMORY_PROBE Scott Branden
2016-12-02 0:19 ` [RFC PATCH 2/2] arm64: defconfig: enable MEMORY_HOTPLUG config options Scott Branden
2016-12-02 1:49 ` Xishi Qiu [this message]
2016-12-02 2:38 ` [RFC PATCH 0/2] arm64: memory-hotplug: Add Memory Hotplug support Scott Branden
2016-12-02 3:11 ` Xishi Qiu
2016-12-07 8:43 ` Scott Branden
2016-12-07 11:21 ` Xishi Qiu
2016-12-02 9:13 ` Maciej Bielski
2016-12-02 10:49 ` Will Deacon
2016-12-02 10:55 ` Maciej Bielski
2016-12-02 17:40 ` Scott Branden
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