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

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Message-ID: <3908561D78D1C84285E8C5FCA982C28F32B534D5@ORSMSX114.amr.corp.intel.com>
Date:	Fri, 9 Oct 2015 21:43:50 +0000
From:	"Luck, Tony" <tony.luck@...el.com>
To:	Xishi Qiu <qiuxishi@...wei.com>,
	Taku Izumi <izumi.taku@...fujitsu.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"kamezawa.hiroyu@...fujitsu.com" <kamezawa.hiroyu@...fujitsu.com>,
	"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.

-Tony
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