linux-kernel - Re: [PATCH 1/1] numa, mm, memory-hotplug: Do not allocate pagetable to local node with MEMORY

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Message-ID: <519B1E75.5040401@cn.fujitsu.com>
Date:	Tue, 21 May 2013 15:12:53 +0800
From:	Tang Chen <tangchen@...fujitsu.com>
To:	Pekka Enberg <penberg@...nel.org>
CC:	Yinghai Lu <yinghai@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, Jacob Shin <jacob.shin@....com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>,
	x86 maintainers <x86@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/1] numa, mm, memory-hotplug: Do not allocate pagetable
 to local node with MEMORY_HOTREMOVE enabled.

Hi

On 05/21/2013 03:02 PM, Pekka Enberg wrote:
......
>
> Ugh. Special-casing for CONFIG_MEMORY_HOTPLUG is just begging for
> trouble. Were you able to determine which commit broke memory
> hot-remove?

Please refer to the following patch-set.
https://lkml.org/lkml/2013/4/11/829

patch21 and patch22 will allocate pagetable to local, which may cause
memory hot-remove fail.

But this patch-set is not in the mainline now.

Thanks. :)


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