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SubjectRe: 2G memory split
   Hi,

> 0xb0000000 is a much better default, but I didn't think that would fly
> as a patch.

I think that will not fly with CONFIG_X86_PAE. In PAE mode the 3rd pmd
(for the 0xc0000000 => 0xffffffff kernel address range) is shared,
anything but 0xc000000 most likely needs some more hackery than just
changing PAGE_OFFSET. As the whole point of this split patchery is to
avoid highmem in the first place it maybe makes sense to have some
"optimize for 1/2/4/more GB main memory" config option which in turn
picks sane PAGE_OFFSET+HIGHMEM+PAE settings?

cheers,

Gerd

--
Gerd 'just married' Hoffmann <kraxel@suse.de>
I'm the hacker formerly known as Gerd Knorr.
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