>> PAGE_OFFSET is 0x78000000 with VMSPLIT_2G, this address is in the middle
>> of the second pgd entry with pae enabled. This breaks assumptions
>> (address is aligned to pgd entry's address) in a lot of places like
>> pagetable_init. Fixing the assumptions is hard (eg, low mapping). SO I
>> just changed the address to 0x80000000.
>
>Do we allow user entering arbitrary value here? In any case, it would
>be nice to document alignment requirements of this one, because
>otherwise someone *will* get it wrong.
There was a reason 0x78000000 was chosen
http://marc.theaimsgroup.com/?l=linux-kernel&m=113690073801820&w=2
Though further back in
http://marc.theaimsgroup.com/?l=linux-kernel&m=113689790817521&w=2
0x80000000 was indeed posted.
-`J'
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