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Subject: Re: [MPC8xx] Initial MMU too low
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: LEROY christophe <christophe.leroy@c-s.fr>
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Date: Sun, 31 Oct 2010 07:47:28 +1100
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On Sat, 2010-10-30 at 13:52 +0200, LEROY christophe wrote:
> Hello,
> 
> When I build a kernel with DEBUG_LOCK_ALLOC set, I get a kernel which 
> has __bss_stop above the C0800000 limit, and then I get a bad page 
> exception during the zeroize of the __bss at startup, because the 
> initial MMU only maps the first 8Mbytes.
> 
> What can I do to fix that ?

Not much... maybe pin more initial TLBs ?

Ben.