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Message-Id: <1202943042.7296.48.camel@pasglop>
Date: Thu, 14 Feb 2008 09:50:42 +1100
From: Benjamin Herrenschmidt <benh@...nel.crashing.org>
To: Becky Bruce <bgill@...escale.com>
Cc: linuxppc-dev@...abs.org, sparclinux@...r.kernel.org,
davem@...emloft.net, linux-kernel@...r.kernel.org
Subject: Re: [RFC/PATCH] [POWERPC] Make lmb support large physical
addressing
On Wed, 2008-02-13 at 16:43 -0600, Becky Bruce wrote:
> Convert the lmb code to use phys_addr_t instead of unsigned long for
> physical addresses and sizes. This is needed to support large amounts
> of RAM on 32-bit systems that support 36-bit physical addressing.
>
> Built/booted on mpc8641; build tested on pasemi and 44x.
>
> Signed-off-by: Becky Bruce <becky.bruce@...escale.com>
> ---
> Folks,
>
> This has been sitting in my tree for a few days, and now it looks like
> David M. has submitted a patch that changes the lmb code to be shared
> between sparc and powerpc. Sparc has no notion of a phys_addr_t.
> Should we just use u64 everywhere in this code instead? Thoughts?
An option would be to use resource_size_t, though it's a bit yucky...
Dave, what do you prefer ?
Ben.
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