[PATCH v3 00/31] powerpc/mm: Update page table format for book3s 64

[Scott Wood]

On Tue, 2015-10-13 at 00:09 +0530, Aneesh Kumar K.V wrote:
> Hi All,
> 
> This patch series attempt to update book3s 64 linux page table format to
> make it more flexible. Our current pte format is very restrictive and we
> overload multiple pte bits. This is due to the non-availability of free bits
> in pte_t. We use pte_t to track the validity of 4K subpages. This patch
> series free up pte_t of 11 bits by moving 4K subpage tracking to the
> lower half of PTE page. The pte format is updated such that we have a
> better method for identifying a pte entry at pmd level. This will also 
> enable
> us to implement hugetlb migration(not yet done in this series). 

Acked-by: Scott Wood <scottwood at freescale.com>

-Scott