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

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Message-ID: <20130409171203.GA12209@redhat.com>
Date:	Tue, 9 Apr 2013 13:12:03 -0400
From:	Vivek Goyal <vgoyal@...hat.com>
To:	"H. Peter Anvin" <hpa@...or.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 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.

Thanks
Vivek
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