linux-kernel - Re: [PATCH v3 3/4] x86, kdump: Change crashkernel

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Date:	Tue, 09 Apr 2013 10:20:01 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Vivek Goyal <vgoyal@...hat.com>
CC:	Yinghai Lu <yinghai@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>, WANG Chao <chaowang@...hat.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 3/4] x86, kdump: Change crashkernel_high/low= to crashkernel=;high/low

On 04/09/2013 10:12 AM, Vivek Goyal wrote:
> On Tue, Apr 09, 2013 at 09:49:28AM -0700, H. Peter Anvin wrote:
>> On 04/09/2013 09:47 AM, Vivek Goyal wrote:
>>> On Tue, Apr 09, 2013 at 08:00:57AM -0700, H. Peter Anvin wrote:
>>>> Please, no semicolons. We already have established syntax for suboptions (option=suboption,suboption,...) and suboptions with parameters (option=suboption:value,...)
>>>
>>> Ok, to understand it better, so crashkernel= will look as follows?
>>>
>>> crashkernel=suboption[,suboption[,....]][@offset]
>>>
>>> A suboption can be.
>>>
>>> - A memory value (128[KMG])
>>> - A range with value (range:size)
>>> - Or a property influencing memory allocation behavior (e.g high or low)
>>>
>>> If yes, sounds good.
>>>
>>
>> Sorry, I don't quite grok @offset and range:size here.
> 
> And @offset means that reserve memory at a particular offset, if
> available.
> 

OK, the @offset should probably be treated as a suboption, with an
implicit/optional comma.

Otherwise, makes sense to me.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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