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Subject: RE: [PATCH] PPC 85xx failure with odd memory sizes and CONFIG_HIGHMEM
Date: Wed, 3 Oct 2007 16:45:02 -0500
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From: "Rune Torgersen" <runet@innovsys.com>
To: "Kumar Gala" <galak@kernel.crashing.org>
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> From: Kumar Gala
> The code would have to change to allow for 1G of lowmem.
> Max lowmem with KERNELBASE @ 0xc000_0000 is 768M.

Which is why I asked. On 82xx it is supported without a codechange by
setting KERNELBASE to 0xa000_0000 in Kconfig menu (and also changing
start of virtual mem, also done by config option).