[PATCH V4 00/31] powerpc/mm: Update page table format for book3s 64

Denis Kirjanov kda at linux-powerpc.org
Sat Oct 24 06:08:20 AEDT 2015


On 10/23/15, Aneesh Kumar K.V <aneesh.kumar at linux.vnet.ibm.com> wrote:
> Denis Kirjanov <kda at linux-powerpc.org> writes:
>
>> On 10/17/15, Aneesh Kumar K.V <aneesh.kumar at 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/

Ok, but I'm getting the following error after applying the first patch
from your series:

error: patch failed: arch/powerpc/include/asm/pgalloc-64.h:166
error: arch/powerpc/include/asm/pgalloc-64.h: patch does not apply
error: arch/powerpc/mm/hash64_64k.c: No such file or directory

kda at hydra ~/devel/linux $ git branch
  master
* next
kda at hydra ~/devel/linux $ git remote show origin
* remote origin
  Fetch URL: git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git
  Push  URL: git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git

Or am I missing something?

>
> -aneesh
>
>


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