- Fix kernel_physical_mapping_init() for large x86 systems

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

---
 arch/x86/mm/init_64.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux/arch/x86/mm/init_64.c
===================================================================
@@ -644,7 +644,7 @@ static unsigned long __init kernel_physi
 		unsigned long pud_phys;
 		pud_t *pud;
 
-		next = start + PGDIR_SIZE;
+		next = (start + PGDIR_SIZE) & PGDIR_MASK;
 		if (next > end)
 			next = end;
 

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applied to tip/x86/urgent - thanks Jack.

Ingo

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