linux-kernel - Re: [Patch 0/8] V3 Implement crashkernel=auto

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Date:	Fri, 14 Aug 2009 10:59:09 +0800
From:	Amerigo Wang <amwang@...hat.com>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
CC:	Bernhard Walle <bernhard.walle@....de>,
	linux-kernel@...r.kernel.org, tony.luck@...el.com,
	linux-ia64@...r.kernel.org, Neil Horman <nhorman@...hat.com>,
	Andi Kleen <andi@...stfloor.org>, akpm@...ux-foundation.org,
	Fenghua Yu <fenghua.yu@...el.com>, Ingo Molnar <mingo@...e.hu>,
	Anton Vorontsov <avorontsov@...mvista.com>
Subject: Re: [Patch 0/8] V3 Implement crashkernel=auto

Eric W. Biederman wrote:
> Bernhard Walle <bernhard.walle@....de> writes:
>
>   
>> * Amerigo Wang <amwang@...hat.com> [2009-08-13 10:19]:
>>     
>>> Sure.
>>>
>>> But if we disable CONFIG_KEXEC_AUTO_RESERVE, that means
>>> crashkernel=auto will be invalid, this is the same as it is now.
>>>       
>> Ok, but since 'crashkernel=auto' is not used today, nobody has
>> 'crashkernel=auto' in the bootloader configuration. So I don't see any
>> practial advantage of that config option.
>>
>> Eric, what's your opinion on that, do we need a config option
>> CONFIG_KEXEC_AUTO_RESERVE or could we just implement that feature
>> unconditionally (if CONFIG_KEXEC is enabled, of course).
>>     
>
> The only reason I can see the option going away would be
> a dependency on CONFIG_HOTPLUG_MEM.
>   

I am not sure if I understand you correctly, but it doesn't and won't 
depend on CONFIG_MEMORY_HOTPLUG.

Thanks.

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