linux-kernel - Re: [patch 1/6] ps3: Preallocate bootmem memory for the PS3 FLASH ROM storage driver

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Date:	Fri, 15 Jun 2007 15:32:41 +0200 (CEST)
From:	Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
cc:	Paul Mackerras <paulus@...ba.org>, linuxppc-dev@...abs.org,
	Jens Axboe <axboe@...nel.dk>,
	"James E.J. Bottomley" <James.Bottomley@...elEye.com>,
	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [patch 1/6] ps3: Preallocate bootmem memory for the PS3 FLASH
 ROM storage driver

On Fri, 15 Jun 2007, Benjamin Herrenschmidt wrote:
> On Fri, 2007-06-15 at 13:39 +0200, Geert Uytterhoeven wrote:
> > plain text document attachment (ps3-stable)
> > Preallocate 256 KiB of bootmem memory for the PS3 FLASH ROM storage driver.
> 
> I still very much dislike the #ifdef xxx_MODULE in main kernel code.

Me too, but there's no other reliable way to allocate it after boot up...

> At the end of the day, is it realistic to ever use a PS3 without the
> storage driver ? I would suggest just allocating those unconditionally.

If you don't plan to (a) boot into GameOS or (b) update the kboot kernel, then
the answer is: yes, you can live without the FLASH ROM driver, and save one
promille of RAM.

With kind regards,
 
Geert Uytterhoeven
Software Architect

Sony Network and Software Technology Center Europe
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