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Subject: Re: [Cbe-oss-dev] [PATCH 05/10] powerpc/ps3: Use highmem region
 from repository
From: Michael Ellerman <michael@ellerman.id.au>
To: geoff@infradead.org, Andre Heider <a.heider@gmail.com>
Date: Wed, 13 Jun 2012 11:49:23 +1000
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Cc: cbe-oss-dev@lists.ozlabs.org, Hector Martin <hector@marcansoft.com>,
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On Wed, 2012-04-25 at 19:19 +0000, Andre Heider wrote:
> Use any preallocated highmem region setup by the bootloader.
> This implementation only checks for the existance of a single
> region at region_index=0.
> 
> This feature allows the bootloader to preallocate highmem
> regions and pass the region locations to the kernel through
> the repository.  Preallocated regions can be used to hold the
> initrd or other large data.  If no region info exists, the
> kernel retains the old behavior and attempts to allocate the
> highmem region itself.
> 
> Based on Hector Martin's patch "Get lv1 high memory region from
> devtree".

Apologies if this has been covered before, but why not use the device
tree?

cheers