linux-kernel - Re: [PATCH] Do not use arbitrary large movablecore to calculate kernelcore

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Message-ID: <CADFvMY+Y5NHwtEfXu0kh6y8DZ2Z9QeiN_Ak3r-YdNLg-h_Bu5w@mail.gmail.com>
Date:	Thu, 2 Apr 2015 21:21:54 -0400
From:	Zhihui Zhang <zzhsuny@...il.com>
To:	Mel Gorman <mgorman@...e.de>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Do not use arbitrary large movablecore to calculate kernelcore

If you specify movablecore > totalpages, required_kernelcore will end
up with a big number because corepages is an unsigned integer. If so,
the following nested is a waste of time. But I see your point.

-Zhihui

On Wed, Apr 1, 2015 at 7:00 PM, Mel Gorman <mgorman@...e.de> wrote:
> On Sat, Mar 28, 2015 at 11:36:02PM -0400, Zhihui Zhang wrote:
>> If kernelcore is not set, then we are working with a very large kernelcore
>> for nothing - no movable zone will be created. If kernelcore is set,
>> then it is not respected at all.
>>
>> Signed-off-by: Zhihui Zhang <zzhsuny@...il.com>
>
> I'm confused. What bug is this patch fixing? What is the user-visible
> impcat of the patch?
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