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* [PATCH v2 00/13] mm: remove __ARCH_HAS_4LEVEL_HACK
@ 2019-11-01  8:39 Mike Rapoport
  2019-11-01  8:39 ` [PATCH v2 01/13] alpha: use pgtable-nop4d instead of 4level-fixup Mike Rapoport
                   ` (12 more replies)
  0 siblings, 13 replies; 18+ messages in thread
From: Mike Rapoport @ 2019-11-01  8:39 UTC (permalink / raw)
  To: linux-mm
  Cc: Andrew Morton, Anton Ivanov, Arnd Bergmann, David S. Miller,
	Geert Uytterhoeven, Greentime Hu, Greg Ungerer, Helge Deller,
	James E.J. Bottomley, Jeff Dike, Kirill A. Shutemov,
	Linus Torvalds, Mark Salter, Matt Turner, Michal Simek,
	Peter Rosin, Richard Weinberger, Rolf Eike Beer, Russell King,
	Sam Creasey, Vincent Chen, Vineet Gupta, Mike Rapoport,
	linux-alpha, linux-arch, linux-arm-kernel, linux-c6x-dev,
	linux-kernel, linux-m68k, linux-parisc, linux-um, sparclinux,
	Mike Rapoport

From: Mike Rapoport <rppt@linux.ibm.com>

Hi,

These patches convert several architectures to use page table folding and
remove __ARCH_HAS_4LEVEL_HACK along with include/asm-generic/4level-fixup.h.

For the nommu configurations the folding is already implemented by the
generic code so the only change was to use the appropriate header file.

As for the rest, the changes are mostly about mechanical replacement of
pgd accessors with pud/pmd ones and the addition of higher levels to page
table traversals.

With Vineet's patches from "elide extraneous generated code for folded
p4d/pud/pmd" series [1] there is a small shrink of the kernel size of about
-0.01% for the defconfig build. 

The set is boot-tested on UML, qemu-{alpha,sparc} and aranym.

v2 changes:
* m68k: fixed ifdefs around pmd_t defintion to work with nommu
* parisc: added conversion of hugetlb (thanks, Helge!); lexical fixups in
  comments and changelog
* collected acks

[1] https://lore.kernel.org/lkml/20191016162400.14796-1-vgupta@synopsys.com

Helge Deller (1):
  parisc/hugetlb: use pgtable-nopXd instead of 4level-fixup

Mike Rapoport (12):
  alpha: use pgtable-nop4d instead of 4level-fixup
  arm: nommu: use pgtable-nopud instead of 4level-fixup
  c6x: use pgtable-nopud instead of 4level-fixup
  m68k: nommu: use pgtable-nopud instead of 4level-fixup
  m68k: mm: use pgtable-nopXd instead of 4level-fixup
  microblaze: use pgtable-nopmd instead of 4level-fixup
  nds32: use pgtable-nopmd instead of 4level-fixup
  parisc: use pgtable-nopXd instead of 4level-fixup
  sparc32: use pgtable-nopud instead of 4level-fixup
  um: remove unused pxx_offset_proc() and addr_pte() functions
  um: add support for folded p4d page tables
  mm: remove __ARCH_HAS_4LEVEL_HACK and
    include/asm-generic/4level-fixup.h

 arch/alpha/include/asm/pgalloc.h         |  4 +-
 arch/alpha/include/asm/pgtable.h         | 24 ++++-----
 arch/alpha/mm/init.c                     | 12 +++--
 arch/arm/include/asm/pgtable.h           |  2 +-
 arch/c6x/include/asm/pgtable.h           |  2 +-
 arch/m68k/include/asm/mcf_pgalloc.h      |  7 ---
 arch/m68k/include/asm/mcf_pgtable.h      | 28 ++++-------
 arch/m68k/include/asm/mmu_context.h      | 12 ++++-
 arch/m68k/include/asm/motorola_pgalloc.h |  4 +-
 arch/m68k/include/asm/motorola_pgtable.h | 32 +++++++-----
 arch/m68k/include/asm/page.h             |  9 ++--
 arch/m68k/include/asm/pgtable_mm.h       | 11 +++--
 arch/m68k/include/asm/pgtable_no.h       |  2 +-
 arch/m68k/include/asm/sun3_pgalloc.h     |  5 --
 arch/m68k/include/asm/sun3_pgtable.h     | 18 -------
 arch/m68k/kernel/sys_m68k.c              | 10 +++-
 arch/m68k/mm/init.c                      |  6 ++-
 arch/m68k/mm/kmap.c                      | 36 ++++++++++----
 arch/m68k/mm/mcfmmu.c                    | 16 +++++-
 arch/m68k/mm/motorola.c                  | 17 ++++---
 arch/microblaze/include/asm/page.h       |  3 --
 arch/microblaze/include/asm/pgalloc.h    | 16 ------
 arch/microblaze/include/asm/pgtable.h    | 32 +-----------
 arch/microblaze/kernel/signal.c          | 10 ++--
 arch/microblaze/mm/init.c                |  7 ++-
 arch/microblaze/mm/pgtable.c             | 13 ++++-
 arch/nds32/include/asm/page.h            |  3 --
 arch/nds32/include/asm/pgalloc.h         |  3 --
 arch/nds32/include/asm/pgtable.h         | 12 +----
 arch/nds32/include/asm/tlb.h             |  1 -
 arch/nds32/kernel/pm.c                   |  4 +-
 arch/nds32/mm/fault.c                    | 16 ++++--
 arch/nds32/mm/init.c                     | 11 +++--
 arch/nds32/mm/mm-nds32.c                 |  6 ++-
 arch/nds32/mm/proc.c                     | 26 ++++++----
 arch/parisc/include/asm/page.h           | 30 ++++++-----
 arch/parisc/include/asm/pgalloc.h        | 41 ++++++---------
 arch/parisc/include/asm/pgtable.h        | 52 ++++++++++---------
 arch/parisc/include/asm/tlb.h            |  2 +
 arch/parisc/kernel/cache.c               | 13 +++--
 arch/parisc/kernel/pci-dma.c             |  9 +++-
 arch/parisc/mm/fixmap.c                  | 10 ++--
 arch/parisc/mm/hugetlbpage.c             | 18 ++++---
 arch/sparc/include/asm/pgalloc_32.h      |  6 +--
 arch/sparc/include/asm/pgtable_32.h      | 28 +++++------
 arch/sparc/mm/fault_32.c                 | 11 ++++-
 arch/sparc/mm/highmem.c                  |  6 ++-
 arch/sparc/mm/io-unit.c                  |  6 ++-
 arch/sparc/mm/iommu.c                    |  6 ++-
 arch/sparc/mm/srmmu.c                    | 51 ++++++++++++++-----
 arch/um/include/asm/pgtable-2level.h     |  1 -
 arch/um/include/asm/pgtable-3level.h     |  1 -
 arch/um/include/asm/pgtable.h            |  3 ++
 arch/um/kernel/mem.c                     | 25 +++++++++-
 arch/um/kernel/skas/mmu.c                | 12 ++++-
 arch/um/kernel/skas/uaccess.c            |  7 ++-
 arch/um/kernel/tlb.c                     | 85 +++++++++++++++++++-------------
 arch/um/kernel/trap.c                    |  4 +-
 include/asm-generic/4level-fixup.h       | 40 ---------------
 include/asm-generic/tlb.h                |  2 -
 include/linux/mm.h                       | 10 ++--
 mm/memory.c                              |  8 ---
 62 files changed, 493 insertions(+), 414 deletions(-)
 delete mode 100644 include/asm-generic/4level-fixup.h

-- 
2.7.4


^ permalink raw reply	[flat|nested] 18+ messages in thread

end of thread, other threads:[~2019-11-01 21:59 UTC | newest]

Thread overview: 18+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-11-01  8:39 [PATCH v2 00/13] mm: remove __ARCH_HAS_4LEVEL_HACK Mike Rapoport
2019-11-01  8:39 ` [PATCH v2 01/13] alpha: use pgtable-nop4d instead of 4level-fixup Mike Rapoport
2019-11-01  9:11   ` Kirill A. Shutemov
2019-11-01 21:59     ` Mike Rapoport
2019-11-01  8:39 ` [PATCH v2 02/13] arm: nommu: use pgtable-nopud " Mike Rapoport
2019-11-01  8:39 ` [PATCH v2 03/13] c6x: " Mike Rapoport
2019-11-01  8:39 ` [PATCH v2 04/13] m68k: nommu: " Mike Rapoport
2019-11-01  8:39 ` [PATCH v2 05/13] m68k: mm: use pgtable-nopXd " Mike Rapoport
2019-11-01  8:39 ` [PATCH v2 06/13] microblaze: use pgtable-nopmd " Mike Rapoport
2019-11-01  8:39 ` [PATCH v2 07/13] nds32: " Mike Rapoport
2019-11-01  8:39 ` [PATCH v2 08/13] parisc: use pgtable-nopXd " Mike Rapoport
2019-11-01  8:39 ` [PATCH v2 09/13] parisc/hugetlb: " Mike Rapoport
2019-11-01  8:39 ` [PATCH v2 10/13] sparc32: use pgtable-nopud " Mike Rapoport
2019-11-01  8:39 ` [PATCH v2 11/13] um: remove unused pxx_offset_proc() and addr_pte() functions Mike Rapoport
2019-11-01  9:12   ` Richard Weinberger
2019-11-01  8:39 ` [PATCH v2 12/13] um: add support for folded p4d page tables Mike Rapoport
2019-11-01  9:20   ` Richard Weinberger
2019-11-01  8:39 ` [PATCH v2 13/13] mm: remove __ARCH_HAS_4LEVEL_HACK and include/asm-generic/4level-fixup.h Mike Rapoport

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