From: Anshuman Khandual <khandual@linux.vnet.ibm.com>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au,
Scott Wood <scottwood@freescale.com>,
Denis Kirjanov <kda@linux-powerpc.org>
Cc: linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH V5 00/31] powerpc/mm: Update page table format for book3s 64
Date: Tue, 24 Nov 2015 12:18:57 +0530 [thread overview]
Message-ID: <56540859.7090306@linux.vnet.ibm.com> (raw)
In-Reply-To: <1448274160-28446-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com>
On 11/23/2015 03:52 PM, 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).
>
> Before making the changes to the pte format, I am splitting the
> pte header definition such that we now have the below layout for headers
>
> book3s
> 32
> hash.h pgtable.h
> 64
> hash.h pgtable.h hash-4k.h hash-64k.h
> booke
> 32
> pgtable.h pte-40x.h pte-44x.h pte-8xx.h pte-fsl-booke.h
> 64
> pgtable-4k.h pgtable-64k.h pgtable.h
>
> I have done the header split such that booke headers and modified to the minimum so as to avoid
> causing breakage in booke.
>
> The patch series can also be found at
> https://github.com/kvaneesh/linux.git book3s-pte-format
Aneesh,
The second commit on the tree branch (faa65ca8e) does not match
with the second patch posted as part of the series. Has the
tree been updated with the latest v5 patches ?
[02/31] powerpc/mm: move pte headers to book3s directory (part 2)
prev parent reply other threads:[~2015-11-24 6:49 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-23 10:22 [PATCH V5 00/31] powerpc/mm: Update page table format for book3s 64 Aneesh Kumar K.V
2015-11-23 10:22 ` [PATCH V5 01/31] powerpc/mm: move pte headers to book3s directory Aneesh Kumar K.V
2015-11-23 10:22 ` [PATCH V5 02/31] powerpc/mm: move pte headers to book3s directory (part 2) Aneesh Kumar K.V
2015-11-24 8:58 ` Anshuman Khandual
2015-11-23 10:22 ` [PATCH V5 03/31] powerpc/mm: make a separate copy for book3s Aneesh Kumar K.V
2015-11-24 9:13 ` Anshuman Khandual
2015-11-23 10:22 ` [PATCH V5 04/31] powerpc/mm: make a separate copy for book3s (part 2) Aneesh Kumar K.V
2015-11-24 11:22 ` Anshuman Khandual
2015-11-23 10:22 ` [PATCH V5 05/31] powerpc/mm: Move hash specific pte width and other defines to book3s Aneesh Kumar K.V
2015-11-24 11:19 ` Anshuman Khandual
2015-11-23 10:22 ` [PATCH V5 06/31] powerpc/mm: Delete booke bits from book3s Aneesh Kumar K.V
2015-11-23 10:22 ` [PATCH V5 07/31] powerpc/mm: Don't have generic headers introduce functions touching pte bits Aneesh Kumar K.V
2015-11-23 10:22 ` [PATCH V5 08/31] powerpc/mm: Drop pte-common.h from BOOK3S 64 Aneesh Kumar K.V
2015-11-25 5:26 ` Anshuman Khandual
2015-11-23 10:22 ` [PATCH V5 09/31] powerpc/mm: Don't use pte_val as lvalue Aneesh Kumar K.V
2015-11-23 10:22 ` [PATCH V5 10/31] powerpc/mm: Don't use pmd_val, pud_val and pgd_val " Aneesh Kumar K.V
2015-11-23 10:22 ` [PATCH V5 11/31] powerpc/mm: Move hash64 PTE bits from book3s/64/pgtable.h to hash.h Aneesh Kumar K.V
2015-11-25 6:22 ` Anshuman Khandual
2015-11-23 10:22 ` [PATCH V5 12/31] powerpc/mm: Move PTE bits from generic functions to hash64 functions Aneesh Kumar K.V
2015-11-23 10:22 ` [PATCH V5 13/31] powerpc/booke: Move nohash headers (part 1) Aneesh Kumar K.V
2015-11-23 10:22 ` [PATCH V5 14/31] powerpc/booke: Move nohash headers (part 2) Aneesh Kumar K.V
2015-11-25 6:35 ` Anshuman Khandual
2015-11-23 10:22 ` [PATCH V5 15/31] powerpc/booke: Move nohash headers (part 3) Aneesh Kumar K.V
2015-11-23 10:22 ` [PATCH V5 16/31] powerpc/booke: Move nohash headers (part 4) Aneesh Kumar K.V
2015-11-23 10:22 ` [PATCH V5 17/31] powerpc/booke: Move nohash headers (part 5) Aneesh Kumar K.V
2015-11-25 9:44 ` Anshuman Khandual
2015-11-23 10:22 ` [PATCH V5 18/31] powerpc/mm: Increase the pte frag size Aneesh Kumar K.V
2015-11-23 10:22 ` [PATCH V5 19/31] powerpc/mm: Convert 4k hash insert to C Aneesh Kumar K.V
2015-11-23 10:22 ` [PATCH V5 20/31] powerpc/mm: update __real_pte to take address as argument Aneesh Kumar K.V
2015-11-23 10:22 ` [PATCH V5 21/31] powerpc/mm: make pte page hash index slot 8 bits Aneesh Kumar K.V
2015-11-27 6:52 ` Anshuman Khandual
2015-11-23 10:22 ` [PATCH V5 22/31] powerpc/mm: Don't track subpage valid bit in pte_t Aneesh Kumar K.V
2015-11-23 10:22 ` [PATCH V5 23/31] powerpc/mm: Increase the width of #define Aneesh Kumar K.V
2015-11-26 5:42 ` Anshuman Khandual
2015-11-23 10:22 ` [PATCH V5 24/31] powerpc/mm: Convert __hash_page_64K to C Aneesh Kumar K.V
2015-11-23 10:22 ` [PATCH V5 25/31] powerpc/mm: Convert 4k insert from asm " Aneesh Kumar K.V
2015-11-23 10:22 ` [PATCH V5 26/31] powerpc/mm: Remove the dependency on pte bit position in asm code Aneesh Kumar K.V
2015-11-26 13:32 ` Anshuman Khandual
2015-11-23 10:22 ` [PATCH V5 27/31] powerpc/mm: Add helper for converting pte bit to hpte bits Aneesh Kumar K.V
2015-11-23 10:22 ` [PATCH V5 28/31] powerpc/mm: Move WIMG update to helper Aneesh Kumar K.V
2015-11-26 13:49 ` Anshuman Khandual
2015-11-23 10:22 ` [PATCH V5 29/31] powerpc/mm: Move hugetlb related headers Aneesh Kumar K.V
2015-11-23 10:22 ` [PATCH V5 30/31] powerpc/mm: Move THP headers around Aneesh Kumar K.V
2015-11-24 10:16 ` Denis Kirjanov
2015-11-24 11:20 ` Aneesh Kumar K.V
2015-11-24 13:58 ` Denis Kirjanov
2015-11-23 10:22 ` [PATCH V5 31/31] powerpc/mm: Add a _PAGE_PTE bit Aneesh Kumar K.V
2015-11-24 9:36 ` Denis Kirjanov
2015-11-23 23:28 ` [PATCH V5 00/31] powerpc/mm: Update page table format for book3s 64 Benjamin Herrenschmidt
2015-11-24 3:31 ` Aneesh Kumar K.V
2015-11-24 6:48 ` Anshuman Khandual [this message]
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