linux-kernel - Re: [PATCH 1/2] x86,mem-hotplug: pass sync_global_pgds() a correct argument in remove

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Message-ID: <53A8C76A.4060207@jp.fujitsu.com>
Date:	Tue, 24 Jun 2014 09:33:46 +0900
From:	Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>
To:	Toshi Kani <toshi.kani@...com>
CC:	<akpm@...ux-foundation.org>, <tglx@...utronix.de>,
	<mingo@...hat.com>, <hpa@...or.com>, <tangchen@...fujitsu.com>,
	<linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>,
	<x86@...nel.org>, <guz.fnst@...fujitsu.com>,
	<zhangyanfei@...fujitsu.com>
Subject: Re: [PATCH 1/2] x86,mem-hotplug: pass sync_global_pgds() a correct
 argument in remove_pagetable()

(2014/06/21 3:27), Toshi Kani wrote:
> On Wed, 2014-06-18 at 15:37 +0900, Yasuaki Ishimatsu wrote:
>> remove_pagetable() gets start argument and passes the argument to
>> sync_global_pgds(). In this case, the argument must not be modified.
>> If the argument is modified and passed to sync_global_pgds(),
>> sync_global_pgds() does not correctly synchronize PGD to PGD entries
>> of all processes MM since synchronized range of memory [start, end]
>> is wrong.
>>
>> Unfortunately the start argument is modified in remove_pagetable().
>> So this patch fixes the issue.
>>
>> Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>
>

> Acked-by: Toshi Kani <toshi.kani@...com>

Thank you for your review.

Thanks,
Yasuak Ishimatsu

>
> Thanks,
> -Toshi
>
>


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