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

To: Geert Uytterhoeven <geert@linux-m68k.org>
Subject: Re: [PATCH] of: specify initrd location using 64-bit
From: Cyril Chemparathy <cyril@ti.com>
Date: Wed, 12 Sep 2012 14:02:27 -0400
Cc: <devicetree-discuss@lists.ozlabs.org>, <linux-arm-kernel@lists.infradead.org>, <linux-c6x-dev@linux-c6x.org>, <linux-kernel@vger.kernel.org>, <linux-mips@linux-mips.org>, <linux@openrisc.net>, <linuxppc-dev@lists.ozlabs.org>, <microblaze-uclinux@itee.uq.edu.au>, <a-jacquiot@ti.com>, <arnd@arndb.de>, <benh@kernel.crashing.org>, <bigeasy@linutronix.de>, <blogic@openwrt.org>, <david.daney@cavium.com>, <dhowells@redhat.com>, <grant.likely@secretlab.ca>, <hpa@zytor.com>, <jonas@southpole.se>, <linus.walleij@linaro.org>, <linux@arm.linux.org.uk>, <m.szyprowski@samsung.com>, <mahesh@linux.vnet.ibm.com>, <mingo@redhat.com>, <monstr@monstr.eu>, <msalter@redhat.com>, <nico@linaro.org>, <paul.gortmaker@windriver.com>, <paulus@samba.org>, <ralf@linux-mips.org>, <rob.herring@calxeda.com>, <suzuki@in.ibm.com>, <tglx@linutronix.de>, <tj@kernel.org>, <x86@kernel.org>
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On 9/12/2012 12:16 PM, Geert Uytterhoeven wrote:
On Wed, Sep 12, 2012 at 6:05 PM, Cyril Chemparathy <cyril@ti.com> 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.

-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)

Why not phys_addr_t?


The rest of the memory specific bits of the device-tree code use u64 for addresses, and I kept it the same for consistency.

Gr{oetje,eeting}s,

                         Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                 -- Linus Torvalds


--
Thanks
- Cyril

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