linux-kernel - Re: [PATCH] m68k/atari: Call paging_init() before nf

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Date:	Fri, 18 Oct 2013 20:29:35 +1300
From:	Michael Schmitz <schmitz@...phys.uni-duesseldorf.de>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	linux-m68k@...ts.linux-m68k.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] m68k/atari: Call paging_init() before nf_init()

Geert,

does your fiddling with memory blocks in bootinfo now result in kernels 
being possible to boot in FastRAM?

Cheers,

	Michael

> nf_init() uses virt_to_phys(), which depends on m68k_memoffset being 
> set and
> module_fixup() having been called, but this is only done in 
> paging_init().
> Hence call paging_init() before nf_init().
>
> This went unnoticed, as virt_to_phys() is a no-op on Atari, unless you 
> start
> fiddling with the memory blocks in the bootinfo manually.
>
> Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
> ---
>  arch/m68k/kernel/setup_mm.c |    4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/m68k/kernel/setup_mm.c b/arch/m68k/kernel/setup_mm.c
> index 99cfe0577ad0..5b8ec4d5f8e8 100644
> --- a/arch/m68k/kernel/setup_mm.c
> +++ b/arch/m68k/kernel/setup_mm.c
> @@ -348,12 +348,12 @@ void __init setup_arch(char **cmdline_p)
>  		panic("No configuration setup");
>  	}
>
> +	paging_init();
> +
>  #ifdef CONFIG_NATFEAT
>  	nf_init();
>  #endif
>
> -	paging_init();
> -
>  #ifndef CONFIG_SUN3
>  	for (i = 1; i < m68k_num_memory; i++)
>  		free_bootmem_node(NODE_DATA(i), m68k_memory[i].addr,
> -- 
> 1.7.9.5
>
> --
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