linux-kernel - Re: [patch 1/7] ps3: Preallocate bootmem memory for the PS3 FLASH ROM storage driver

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Date:	Sat, 26 May 2007 10:51:01 +0200 (CEST)
From:	Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
cc:	linuxppc-dev@...abs.org, linux-kernel@...r.kernel.org
Subject: Re: [patch 1/7] ps3: Preallocate bootmem memory for the PS3 FLASH
 ROM storage driver

On Sat, 26 May 2007, Benjamin Herrenschmidt wrote:
> On Fri, 2007-05-25 at 10:36 +0200, Geert.Uytterhoeven@...ycom.com wrote:
> > -#if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE)
> > +#if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) || \
> > +    defined(CONFIG_PS3_FLASH_MODULE) ||
> > defined(CONFIG_PS3_FLASH_MODULE)
> 
> As I said multiple times, imho, #ifdef CONFIG_xxx_MODULE in the kernel
> is always a bug.
> 
> You should always be able to build the module out of tree afteward and
> use it on a kernel that didn't have the CONFIG_xxx_MODULE set imho.

I know.

Do you know another way to allocate an aligned chunk of 256 KiB of physically
contiguous memory, possibly a long time after boot up?

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- Sony Network and Software Technology Center Europe (NSCE)
Geert.Uytterhoeven@...ycom.com ------- The Corporate Village, Da Vincilaan 7-D1
Voice +32-2-7008453 Fax +32-2-7008622 ---------------- B-1935 Zaventem, Belgium
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