linux-kernel - RE: [PATCH][RFC] mm: Introduce kernelcore=reliable option

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Message-ID: <E86EADE93E2D054CBCD4E708C38D364A5427EA26@G01JPEXMBYT01>
Date:	Wed, 14 Oct 2015 01:19:47 +0000
From:	"Izumi, Taku" <izumi.taku@...fujitsu.com>
To:	"Luck, Tony" <tony.luck@...el.com>, Xishi Qiu <qiuxishi@...wei.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"mel@....ul.ie" <mel@....ul.ie>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"Kamezawa, Hiroyuki" <kamezawa.hiroyu@...fujitsu.com>,
	"Hansen, Dave" <dave.hansen@...el.com>,
	"Mel Gorman" <mgorman@...e.de>, Ingo Molnar <mingo@...nel.org>
Subject: RE: [PATCH][RFC] mm: Introduce kernelcore=reliable option

> > I remember Kame has already suggested this idea. In my opinion,
> > I still think it's better to add a new migratetype or a new zone,
> > so both user and kernel could use mirrored memory.
> 
> A new zone would be more flexible ... and probably the right long
> term solution.  But this looks like a very clever was to try out the
> feature with a minimally invasive patch.

 Yes. I agree creating a new zone is the right solution for long term.
 I believe this approach using MOVABLE_ZONE is good and reasonable 
 for short-term solution.

Sincerely,
Taku Izumi
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