linux-kernel - Re: [patch 2/3] Add flags parameter to reserve_bootmem

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Message-ID: <484D5CCB.5020709@firstfloor.org>
Date:	Mon, 09 Jun 2008 18:39:39 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Bernhard Walle <bwalle@...e.de>
CC:	Vivek Goyal <vgoyal@...hat.com>,
	Johannes Weiner <hannes@...urebad.de>,
	kexec@...ts.infradead.org, linux-kernel@...r.kernel.org,
	hpa@...or.com, anderson@...hat.com,
	Amul Shah <amul.shah@...sys.com>
Subject: Re: [patch 2/3] Add flags parameter to reserve_bootmem_generic()

Bernhard Walle wrote:
> * Vivek Goyal [2008-06-09 09:22]:
>> Kdump first kernel always tries to reserve just physical RAM and nothing
>> else. So I am not sure what does above code do. Try to reserve a memory
>> which is not RAM but is in the region less than highest mapped entity and
>> in that case return silently without any warning. In what case do we
>> exercise this path?
> 
> I don't know. That code has been introduced in 
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=5e58a02a8f6a7a1c9ae41f39286bcd3aea0d6f24
> 
> Ccing Andi.
> 
> IMO we should not print any warning in that function, leaving the error
> handling to the caller.

Don't remember the details. Perhaps Amul does (cc'ed)

-Andi

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