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From: Arnd Bergmann <arnd@arndb.de>
To: linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH] powerpc: Add configurable -Werror for arch/powerpc
Date: Thu, 18 Jun 2009 16:22:18 +0200
References: <adf502e7c85161d77fdcaca24f55ba6b418c7f04.1244616523.git.michael@ellerman.id.au>
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Cc: linuxppc-dev list <linuxppc-dev@ozlabs.org>,
	Timur Tabi <timur@freescale.com>
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On Monday 15 June 2009, Timur Tabi wrote:
> On Mon, Jun 15, 2009 at 2:50 AM, Michael Ellerman<michael@ellerman.id.au> wrote:
> > arch/powerpc/platforms/chrp/setup.c:378: error: the frame size of 1040 bytes is larger than 1024 bytes
> 
> What's so bad about a frame size larger than 1024?
> 

It's not necessarily a bug, but all frame sizes in the call chain
combined must never exceed the kernel stack size. 1024 is an
arbitrary limit that we warn about for a single function, because
it's likely that things will break if you have more than one of these.

	Arnd <><