[PATCH 0/9] powerpc/mm: Restructure Linux PTE on Book3S/64 to radix format · Paul Mackerras <hidden> · 2016-02-22
[PATCH 1/9] powerpc/mm/book3s-64: Clean up some obsolete or misleading comments · Paul Mackerras <hidden> · 2016-02-22
Re: [1/9] powerpc/mm/book3s-64: Clean up some obsolete or misleading comments · Michael Ellerman <mpe@ellerman.id.au> · 2016-02-29
[PATCH 2/9] powerpc/mm/book3s-64: Free up 7 high-order bits in the Linux PTE · Paul Mackerras <hidden> · 2016-02-22
[PATCH 3/9] powerpc/mm/book3s-64: Use physical addresses in upper page table tree levels · Paul Mackerras <hidden> · 2016-02-22
Re: [PATCH 3/9] powerpc/mm/book3s-64: Use physical addresses in upper page table tree levels · Aneesh Kumar K.V <hidden> · 2016-02-22
Re: [PATCH 3/9] powerpc/mm/book3s-64: Use physical addresses in upper page table tree levels · Paul Mackerras <hidden> · 2016-02-23
Re: [PATCH 3/9] powerpc/mm/book3s-64: Use physical addresses in upper page table tree levels · Aneesh Kumar K.V <hidden> · 2016-02-22
Re: [PATCH 3/9] powerpc/mm/book3s-64: Use physical addresses in upper page table tree levels · Paul Mackerras <hidden> · 2016-02-23
[PATCH v2 3/9] powerpc/mm/book3s-64: Use physical addresses in upper page table tree levels · Paul Mackerras <hidden> · 2016-02-23
[PATCH 4/9] powerpc/mm/book3s-64: Move _PAGE_PRESENT to the most significant bit · Paul Mackerras <hidden> · 2016-02-22
[PATCH 5/9] powerpc/mm/book3s-64: Move _PAGE_PTE to 2nd most significant bit · Paul Mackerras <hidden> · 2016-02-22
[PATCH 6/9] powerpc/mm/book3s-64: Move HPTE-related bits in PTE to upper end · Paul Mackerras <hidden> · 2016-02-22
[PATCH 7/9] powerpc/mm/book3s-64: Shuffle read, write, execute and user bits in PTE · Paul Mackerras <hidden> · 2016-02-22
[PATCH 8/9] powerpc/mm/book3s-64: Move software-used bits in PTE · Paul Mackerras <hidden> · 2016-02-22
[PATCH 9/9] powerpc/mm/book3s-64: Expand the real page number field of the Linux PTE · Paul Mackerras <hidden> · 2016-02-22

Re: [PATCH 3/9] powerpc/mm/book3s-64: Use physical addresses in upper page table tree levels

From: Aneesh Kumar K.V <hidden>
Date: 2016-02-22 04:56:01

Paul Mackerras [off-list ref] writes:

From: Paul Mackerras <redacted>

This changes the Linux page tables to store physical addresses
rather than kernel virtual addresses in the upper levels of the
tree (pgd, pud and pmd) for 64-bit Book 3S machines.

This frees up some high order bits, and will be needed with
PowerISA v3.0 machines which read the page table tree in hardware
in radix mode.

How about hugepd pointer with 4k linux page size ?

-aneesh

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