linux-kernel - Re: [PATCH] of: specify initrd location using 64-bit

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Message-ID: <alpine.LFD.2.02.1209121629260.28681@xanadu.home>
Date:	Wed, 12 Sep 2012 16:31:29 -0400 (EDT)
From:	Nicolas Pitre <nicolas.pitre@...aro.org>
To:	Rob Herring <robherring2@...il.com>
cc:	Cyril Chemparathy <cyril@...com>,
	devicetree-discuss@...ts.ozlabs.org,
	linux-arm-kernel@...ts.infradead.org, linux-c6x-dev@...ux-c6x.org,
	linux-kernel@...r.kernel.org, linux-mips@...ux-mips.org,
	linux@...nrisc.net, linuxppc-dev@...ts.ozlabs.org,
	microblaze-uclinux@...e.uq.edu.au, x86@...nel.org,
	david.daney@...ium.com, benh@...nel.crashing.org,
	bigeasy@...utronix.de, grant.likely@...retlab.ca,
	paul.gortmaker@...driver.com, paulus@...ba.org, hpa@...or.com,
	m.szyprowski@...sung.com, jonas@...thpole.se,
	linux@....linux.org.uk, a-jacquiot@...com, mingo@...hat.com,
	suzuki@...ibm.com, mahesh@...ux.vnet.ibm.com,
	linus.walleij@...aro.org, arnd@...db.de, msalter@...hat.com,
	rob.herring@...xeda.com, tglx@...utronix.de, blogic@...nwrt.org,
	dhowells@...hat.com, monstr@...str.eu, ralf@...ux-mips.org,
	tj@...nel.org
Subject: Re: [PATCH] of: specify initrd location using 64-bit

On Wed, 12 Sep 2012, Rob Herring wrote:

> On 09/12/2012 11:05 AM, Cyril Chemparathy wrote:
> > On some PAE architectures, the entire range of physical memory could reside
> > outside the 32-bit limit.  These systems need the ability to specify the
> > initrd location using 64-bit numbers.
> > 
> > This patch globally modifies the early_init_dt_setup_initrd_arch() function to
> > use 64-bit numbers instead of the current unsigned long.
> 
> S-o-B?
> 
> > ---
> >  arch/arm/mm/init.c            |    2 +-
> >  arch/c6x/kernel/devicetree.c  |    3 +--
> >  arch/microblaze/kernel/prom.c |    3 +--
> >  arch/mips/kernel/prom.c       |    3 +--
> >  arch/openrisc/kernel/prom.c   |    3 +--
> >  arch/powerpc/kernel/prom.c    |    3 +--
> >  arch/x86/kernel/devicetree.c  |    3 +--
> >  drivers/of/fdt.c              |   10 ++++++----
> >  include/linux/of_fdt.h        |    3 +--
> >  9 files changed, 14 insertions(+), 19 deletions(-)
> > 
> > diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
> > index ad722f1..579792c 100644
> > --- a/arch/arm/mm/init.c
> > +++ b/arch/arm/mm/init.c
> > @@ -76,7 +76,7 @@ static int __init parse_tag_initrd2(const struct tag *tag)
> >  __tagtable(ATAG_INITRD2, parse_tag_initrd2);
> >  
> >  #ifdef CONFIG_OF_FLATTREE
> > -void __init early_init_dt_setup_initrd_arch(unsigned long start, unsigned long end)
> > +void __init early_init_dt_setup_initrd_arch(u64 start, u64 end)
> 
> phys_initrd_start/size need to change too. Not sure about similar things
> on other arches.

size ?


Nicolas
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