Re: [Patch 0/8] V3 Implement crashkernel=auto
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- To: Bernhard Walle <bernhard.walle@xxxxxx>
- Subject: Re: [Patch 0/8] V3 Implement crashkernel=auto
- From: ebiederm@xxxxxxxxxxxx (Eric W. Biederman)
- Date: Thu, 13 Aug 2009 03:49:24 -0700
- Cc: Amerigo Wang <amwang@xxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, tony.luck@xxxxxxxxx, linux-ia64@xxxxxxxxxxxxxxx, Neil Horman <nhorman@xxxxxxxxxx>, Andi Kleen <andi@xxxxxxxxxxxxxx>, akpm@xxxxxxxxxxxxxxxxxxxx, Fenghua Yu <fenghua.yu@xxxxxxxxx>, Ingo Molnar <mingo@xxxxxxx>, Anton Vorontsov <avorontsov@xxxxxxxxxxxxx>
- In-reply-to: <20090813090335.GA9502@xxxxxxxxxxxxxxx> (Bernhard Walle's message of "Thu\, 13 Aug 2009 11\:03\:35 +0200")
- List-id: <linux-ia64.vger.kernel.org>
- References: <20090812081731.5757.25254.sendpatchset@xxxxxxxxxxxxxxxxxxxxx> <20090812124659.GA4808@xxxxxxxxxxxxxxx> <4A837F49.9060003@xxxxxxxxxx> <20090813053952.GA9037@xxxxxxxxxxxxxxx> <4A83CCAA.1030302@xxxxxxxxxx> <20090813090335.GA9502@xxxxxxxxxxxxxxx>
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Bernhard Walle <bernhard.walle@xxxxxx> writes:
> * Amerigo Wang <amwang@xxxxxxxxxx> [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.
Eric
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