linux-kernel - Re: [RFC PATCH 01/12] mm: add a new config to manage the code

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Message-ID: <5576BBA5.20005@huawei.com>
Date:	Tue, 9 Jun 2015 18:10:45 +0800
From:	Xishi Qiu <qiuxishi@...wei.com>
To:	Kamezawa Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	<nao.horiguchi@...il.com>, Yinghai Lu <yinghai@...nel.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	"Thomas Gleixner" <tglx@...utronix.de>, <mingo@...e.hu>,
	Xiexiuqi <xiexiuqi@...wei.com>,
	Hanjun Guo <guohanjun@...wei.com>,
	"Luck, Tony" <tony.luck@...el.com>, Linux MM <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH 01/12] mm: add a new config to manage the code

On 2015/6/9 14:44, Kamezawa Hiroyuki wrote:

> On 2015/06/04 21:56, Xishi Qiu wrote:
>> This patch introduces a new config called "CONFIG_ACPI_MIRROR_MEMORY", it is
>> used to on/off the feature.
>>
>> Signed-off-by: Xishi Qiu <qiuxishi@...wei.com>
>> ---
>>   mm/Kconfig | 8 ++++++++
>>   1 file changed, 8 insertions(+)
>>
>> diff --git a/mm/Kconfig b/mm/Kconfig
>> index 390214d..4f2a726 100644
>> --- a/mm/Kconfig
>> +++ b/mm/Kconfig
>> @@ -200,6 +200,14 @@ config MEMORY_HOTREMOVE
>>       depends on MEMORY_HOTPLUG && ARCH_ENABLE_MEMORY_HOTREMOVE
>>       depends on MIGRATION
>>
>> +config MEMORY_MIRROR
>> +    bool "Address range mirroring support"
>> +    depends on X86 && NUMA
>> +    default y
>> +    help
>> +      This feature depends on hardware and firmware support.
>> +      ACPI or EFI records the mirror info.
> 
> default y...no runtime influence when the user doesn't use memory mirror ?
> 

It is a new feature, so how about like this: default y -> n?

Thanks,
Xishi Qiu

> Thanks,
> -Kame
> 
> 
> 
> 
> .
> 



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