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From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
To: Denis Kirjanov <kda@linux-powerpc.org>
Cc: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au,
 Scott Wood <scottwood@freescale.com>, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH V4 00/31] powerpc/mm: Update page table format for book3s
 64
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References: <1445076522-20527-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com>
 <CAOJe8K1cnLmDdnV-f4XNiJjoK2w59SwEi8vNy2i6yLyOKYxCVQ@mail.gmail.com>
Date: Fri, 23 Oct 2015 11:36:56 +0530
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Denis Kirjanov <kda@linux-powerpc.org> writes:

> On 10/17/15, Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> 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).
>
> Hi, what tree does this apply to?
>

linux-powerpc tree -next branch

https://git.kernel.org/cgit/linux/kernel/git/powerpc/linux.git/

-aneesh