linux-kernel - RE: [PATCH v2 0/5] Add movablecore

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Message-ID: <3908561D78D1C84285E8C5FCA982C28F1C95FC11@ORSMSX108.amr.corp.intel.com>
Date:	Thu, 29 Nov 2012 22:41:44 +0000
From:	"Luck, Tony" <tony.luck@...el.com>
To:	"H. Peter Anvin" <hpa@...or.com>, Mel Gorman <mgorman@...e.de>
CC:	Jiang Liu <jiang.liu@...wei.com>,
	Tang Chen <tangchen@...fujitsu.com>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"rob@...dley.net" <rob@...dley.net>,
	"isimatu.yasuaki@...fujitsu.com" <isimatu.yasuaki@...fujitsu.com>,
	"laijs@...fujitsu.com" <laijs@...fujitsu.com>,
	"wency@...fujitsu.com" <wency@...fujitsu.com>,
	"linfeng@...fujitsu.com" <linfeng@...fujitsu.com>,
	"yinghai@...nel.org" <yinghai@...nel.org>,
	"kosaki.motohiro@...fujitsu.com" <kosaki.motohiro@...fujitsu.com>,
	"minchan.kim@...il.com" <minchan.kim@...il.com>,
	"rientjes@...gle.com" <rientjes@...gle.com>,
	"rusty@...tcorp.com.au" <rusty@...tcorp.com.au>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	Len Brown <lenb@...nel.org>,
	"Wang, Frank" <frank.wang@...el.com>
Subject: RE: [PATCH v2 0/5] Add movablecore_map boot option

> The other bit is that if you really really want high reliability, memory
> mirroring is the way to go; it is the only way you will be able to
> hotremove memory without having to have a pre-event to migrate the
> memory away from the affected node before the memory is offlined.

Some platforms don't support cross-node mirrors ... but we still want to
be able to remove a node.

-Tony
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