linux-kernel - Re: [PATCH V3] ia64/mm: fix a bad_page bug when crash kernel booting

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Date:	Tue, 19 Feb 2013 13:56:55 -0800
From:	Tony Luck <tony.luck@...il.com>
To:	Xishi Qiu <qiuxishi@...wei.com>
Cc:	Matt Fleming <matt.fleming@...el.com>, fenghua.yu@...el.com,
	Liujiang <jiang.liu@...wei.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-ia64@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-efi@...r.kernel.org, linux-mm@...ck.org,
	Hanjun Guo <guohanjun@...wei.com>,
	WuJianguo <wujianguo@...wei.com>
Subject: Re: [PATCH V3] ia64/mm: fix a bad_page bug when crash kernel booting

Foolishly sent an earlier reply from Outlook which appears
to have mangled/lost it. Trying again ...

> In efi_init() memory aligns in IA64_GRANULE_SIZE(16M). If set "crashkernel=1024M-:600M"

Is this where the real problem begins?  Should we insist that users
provide crashkernel
parameters rounded to GRANULE boundaries?

-Tony
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