linux-kernel - Re: [PATCH v2 0/2] mm: Introduce kernelcore=reliable option

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Message-ID: <CA+8MBb++DH+X-KHaABBTzOc0ygkiR0xU4JpJaLmXac90kFf6pw@mail.gmail.com>
Date:	Mon, 7 Dec 2015 16:25:32 -0800
From:	Tony Luck <tony.luck@...il.com>
To:	Taku Izumi <izumi.taku@...fujitsu.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	Xishi Qiu <qiuxishi@...wei.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Mel Gorman <mel@....ul.ie>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Dave Hansen <dave.hansen@...el.com>, matt@...eblueprint.co.uk
Subject: Re: [PATCH v2 0/2] mm: Introduce kernelcore=reliable option

Sorry for the slow turnaround testing this.

This version seems to do better with my quirky system.
Summary of /proc/zoneinfo now looks like this:

$ ./zoneinfo
Node          Normal         Movable             DMA           DMA32
   0        17090.04        85687.43           14.93         1677.41
   1        17949.70        81490.98
   2        17911.66        85675.00
   3        17936.42        85313.32

which gets close to the mirror numbers reported in early part of boot:

[    0.000000] efi: Memory: 81050M/420096M mirrored memory

SUM(Normal) = 70887.82

There are ~8GB of "struct page" allocated from boot time allocator,
which covers most of the difference in the values.

-Tony
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