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To: David Miller <davem@davemloft.net>
Cc: clameter@sgi.com, akpm@linux-foundation.org, linux-mm@vger.kernel.org,
       linux-kernel@vger.kernel.org, dada1@cosmosbay.com,
       schwidefsky@de.ibm.com
Subject: Re: [patch 01/28] cpu alloc: The allocator
From: Andi Kleen <andi@firstfloor.org>
References: <20071106195144.983665861@sgi.com>
	<20071106195157.878563669@sgi.com>
	<20071113.031510.151440585.davem@davemloft.net>
Date: Wed, 14 Nov 2007 02:06:28 +0100
In-Reply-To: <20071113.031510.151440585.davem@davemloft.net> (David Miller's message of "Tue\, 13 Nov 2007 03\:15\:10 -0800 \(PST\)")
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David Miller <davem@davemloft.net> writes:
>
> The problem is that for the non-virtualized case this patch bloats up
> the BSS section to be more than 8MB in size.  Sparc64 kernel images
> cannot be more than 8MB in size total due to various boot loader and
> firmware limitations.

I recently ran into a similar problem with x86-64 and large BSS from
lockdep conflicting with a 16MB kdump kernel. Solution was to do
another early allocator before bootmem and then move the tables into
there.

-Andi