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Subject[patch 17/29] x86: fix kernel_physical_mapping_init() for large x86 systems
2.6.25-stable review patch.  If anyone has any objections, please let us 
know.

------------------
From: Ingo Molnar <mingo@elte.hu>
based on e22146e610bb7aed63282148740ab1d1b91e1d90 upstream

Fix bug in kernel_physical_mapping_init() that causes kernel
page table to be built incorrectly for systems with greater
than 512GB of memory.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Cc: linux-mm@kvack.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Oliver Pinter <oliver.pntr@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
arch/x86/mm/init_64.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -427,7 +427,7 @@ void __init_refok init_memory_mapping(un
else
pud = alloc_low_page(&pud_phys);

- next = start + PGDIR_SIZE;
+ next = (start + PGDIR_SIZE) & PGDIR_MASK;
if (next > end)
next = end;
phys_pud_init(pud, __pa(start), __pa(next));
--


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