linux-kernel - Re: [patch 0/2] Protect crashkernel against BSS overlap

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Message-ID: <p738x63z8f8.fsf@crumb.suse.de>
Date:	16 Oct 2007 11:59:55 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	vgoyal@...ibm.com
Cc:	Bernhard Walle <bwalle@...e.de>, linux-kernel@...r.kernel.org,
	kexec@...ts.infradead.org, akpm@...ux-foundation.org
Subject: Re: [patch 0/2] Protect crashkernel against BSS overlap

Vivek Goyal <vgoyal@...ibm.com> writes:

> Wouldn't it be better if we reserve the code, data and bss memory also
> using bootmem allocator and when somebody tries to reserve craskernel memory
> and if there is an overlap, boot memory allocator should scream?

Some x86 bootmem code right now relies on it not screaming (or at least not
erroring out). That would need to be fixed first. Or you make it a flag.
Would probably make sense, except that we already have too many bootmem
allocation variants :/

-Andi
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