[PATCH v3 00/14] mm: remove __ARCH_HAS_5LEVEL_HACK

From: Mike Rapoport <rppt@kernel.org>
To: linux-kernel@vger.kernel.org
Cc: Rich Felker <dalias@libc.org>,
	linux-ia64@vger.kernel.org,
	Geert Uytterhoeven <geert+renesas@glider.be>,
	linux-sh@vger.kernel.org,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	linux-mm@kvack.org, Paul Mackerras <paulus@samba.org>,
	linux-hexagon@vger.kernel.org, Will Deacon <will@kernel.org>,
	kvmarm@lists.cs.columbia.edu, Jonas Bonn <jonas@southpole.se>,
	linux-arch@vger.kernel.org, Brian Cain <bcain@codeaurora.org>,
	Marc Zyngier <maz@kernel.org>,
	Russell King <linux@armlinux.org.uk>,
	Ley Foon Tan <ley.foon.tan@intel.com>,
	Mike Rapoport <rppt@linux.ibm.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	uclinux-h8-devel@lists.sourceforge.jp,
	Fenghua Yu <fenghua.yu@intel.com>, Arnd Bergmann <arnd@arndb.de>,
	kvm-ppc@vger.kernel.org,
	Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>,
	openrisc@lists.librecores.org, Stafford Horne <shorne@gmail.com>,
	Guan Xuetao <gxt@pku.edu.cn>,
	linux-arm-kernel@lists.infradead.org,
	Christophe Leroy <christophe.leroy@c-s.fr>,
	Tony Luck <tony.luck@intel.com>,
	Yoshinori Sato <ysato@users.sourceforge.jp>,
	Michael Ellerman <mpe@ellerman.id.au>,
	nios2-dev@lists.rocketboards.org,
	Andrew Morton <akpm@linux-foundation.org>,
	linuxppc-dev@lists.ozlabs.org, Mike Rapoport <rppt@kernel.org>
Subject: [PATCH v3 00/14] mm: remove __ARCH_HAS_5LEVEL_HACK
Date: Thu, 27 Feb 2020 08:45:54 +0000	[thread overview]
Message-ID: <20200227084608.18223-1-rppt@kernel.org> (raw)

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

Hi,

These patches convert several architectures to use page table folding and
remove __ARCH_HAS_5LEVEL_HACK along with include/asm-generic/5level-fixup.h
and include/asm-generic/pgtable-nop4d-hack.h. With that we'll have a single
and consistent way of dealing with page table folding instead of a mix of
three existing options.

The changes are mostly about mechanical replacement of pgd accessors with p4d
ones and the addition of higher levels to page table traversals.

v3:
* add Christophe's patch that removes ppc32 get_pteptr()
* reduce amount of upper layer walks in powerpc

v2:
* collect per-arch patches into a single set
* include Geert's update of 'sh' printing messages
* rebase on v5.6-rc1+

Christophe Leroy (1):
  powerpc/32: drop get_pteptr()

Geert Uytterhoeven (1):
  sh: fault: Modernize printing of kernel messages

Mike Rapoport (12):
  arm/arm64: add support for folded p4d page tables
  h8300: remove usage of __ARCH_USE_5LEVEL_HACK
  hexagon: remove __ARCH_USE_5LEVEL_HACK
  ia64: add support for folded p4d page tables
  nios2: add support for folded p4d page tables
  openrisc: add support for folded p4d page tables
  powerpc: add support for folded p4d page tables
  sh: drop __pXd_offset() macros that duplicate pXd_index() ones
  sh: add support for folded p4d page tables
  unicore32: remove __ARCH_USE_5LEVEL_HACK
  asm-generic: remove pgtable-nop4d-hack.h
  mm: remove __ARCH_HAS_5LEVEL_HACK and
    include/asm-generic/5level-fixup.h

 arch/arm/include/asm/kvm_mmu.h                |   5 +-
 arch/arm/include/asm/pgtable.h                |   1 -
 arch/arm/include/asm/stage2_pgtable.h         |  15 +-
 arch/arm/lib/uaccess_with_memcpy.c            |   9 +-
 arch/arm/mach-sa1100/assabet.c                |   2 +-
 arch/arm/mm/dump.c                            |  29 ++-
 arch/arm/mm/fault-armv.c                      |   7 +-
 arch/arm/mm/fault.c                           |  28 ++-
 arch/arm/mm/idmap.c                           |   3 +-
 arch/arm/mm/init.c                            |   2 +-
 arch/arm/mm/ioremap.c                         |  12 +-
 arch/arm/mm/mm.h                              |   2 +-
 arch/arm/mm/mmu.c                             |  35 ++-
 arch/arm/mm/pgd.c                             |  40 +++-
 arch/arm64/include/asm/kvm_mmu.h              |  10 +-
 arch/arm64/include/asm/pgalloc.h              |  10 +-
 arch/arm64/include/asm/pgtable-types.h        |   5 +-
 arch/arm64/include/asm/pgtable.h              |  37 ++--
 arch/arm64/include/asm/stage2_pgtable.h       |  48 +++-
 arch/arm64/kernel/hibernate.c                 |  44 +++-
 arch/arm64/mm/fault.c                         |   9 +-
 arch/arm64/mm/hugetlbpage.c                   |  15 +-
 arch/arm64/mm/kasan_init.c                    |  26 ++-
 arch/arm64/mm/mmu.c                           |  52 +++--
 arch/arm64/mm/pageattr.c                      |   7 +-
 arch/h8300/include/asm/pgtable.h              |   1 -
 arch/hexagon/include/asm/fixmap.h             |   4 +-
 arch/hexagon/include/asm/pgtable.h            |   1 -
 arch/ia64/include/asm/pgalloc.h               |   4 +-
 arch/ia64/include/asm/pgtable.h               |  17 +-
 arch/ia64/mm/fault.c                          |   7 +-
 arch/ia64/mm/hugetlbpage.c                    |  18 +-
 arch/ia64/mm/init.c                           |  28 ++-
 arch/nios2/include/asm/pgtable.h              |   3 +-
 arch/nios2/mm/fault.c                         |   9 +-
 arch/nios2/mm/ioremap.c                       |   6 +-
 arch/openrisc/include/asm/pgtable.h           |   1 -
 arch/openrisc/mm/fault.c                      |  10 +-
 arch/openrisc/mm/init.c                       |   4 +-
 arch/powerpc/include/asm/book3s/32/pgtable.h  |   1 -
 arch/powerpc/include/asm/book3s/64/hash.h     |   4 +-
 arch/powerpc/include/asm/book3s/64/pgalloc.h  |   4 +-
 arch/powerpc/include/asm/book3s/64/pgtable.h  |  60 ++---
 arch/powerpc/include/asm/book3s/64/radix.h    |   6 +-
 arch/powerpc/include/asm/nohash/32/pgtable.h  |   1 -
 arch/powerpc/include/asm/nohash/64/pgalloc.h  |   2 +-
 .../include/asm/nohash/64/pgtable-4k.h        |  32 +--
 arch/powerpc/include/asm/nohash/64/pgtable.h  |   6 +-
 arch/powerpc/include/asm/pgtable.h            |   6 +-
 arch/powerpc/kvm/book3s_64_mmu_radix.c        |  30 ++-
 arch/powerpc/lib/code-patching.c              |   7 +-
 arch/powerpc/mm/book3s32/mmu.c                |   2 +-
 arch/powerpc/mm/book3s32/tlb.c                |   4 +-
 arch/powerpc/mm/book3s64/hash_pgtable.c       |   4 +-
 arch/powerpc/mm/book3s64/radix_pgtable.c      |  26 ++-
 arch/powerpc/mm/book3s64/subpage_prot.c       |   6 +-
 arch/powerpc/mm/hugetlbpage.c                 |  28 ++-
 arch/powerpc/mm/kasan/kasan_init_32.c         |   8 +-
 arch/powerpc/mm/mem.c                         |   4 +-
 arch/powerpc/mm/nohash/40x.c                  |   4 +-
 arch/powerpc/mm/nohash/book3e_pgtable.c       |  15 +-
 arch/powerpc/mm/pgtable.c                     |  30 ++-
 arch/powerpc/mm/pgtable_32.c                  |  45 +---
 arch/powerpc/mm/pgtable_64.c                  |  10 +-
 arch/powerpc/mm/ptdump/hashpagetable.c        |  20 +-
 arch/powerpc/mm/ptdump/ptdump.c               |  14 +-
 arch/powerpc/xmon/xmon.c                      |  18 +-
 arch/sh/include/asm/pgtable-2level.h          |   1 -
 arch/sh/include/asm/pgtable-3level.h          |   1 -
 arch/sh/include/asm/pgtable_32.h              |   5 +-
 arch/sh/include/asm/pgtable_64.h              |   5 +-
 arch/sh/kernel/io_trapped.c                   |   7 +-
 arch/sh/mm/cache-sh4.c                        |   4 +-
 arch/sh/mm/cache-sh5.c                        |   7 +-
 arch/sh/mm/fault.c                            |  65 ++++--
 arch/sh/mm/hugetlbpage.c                      |  28 ++-
 arch/sh/mm/init.c                             |  15 +-
 arch/sh/mm/kmap.c                             |   2 +-
 arch/sh/mm/tlbex_32.c                         |   6 +-
 arch/sh/mm/tlbex_64.c                         |   7 +-
 arch/unicore32/include/asm/pgtable.h          |   1 -
 arch/unicore32/kernel/hibernate.c             |   4 +-
 include/asm-generic/5level-fixup.h            |  58 -----
 include/asm-generic/pgtable-nop4d-hack.h      |  64 ------
 include/asm-generic/pgtable-nopud.h           |   4 -
 include/linux/mm.h                            |   6 -
 mm/kasan/init.c                               |  11 -
 mm/memory.c                                   |   8 -
 virt/kvm/arm/mmu.c                            | 209 +++++++++++++++---
 89 files changed, 917 insertions(+), 564 deletions(-)
 delete mode 100644 include/asm-generic/5level-fixup.h
 delete mode 100644 include/asm-generic/pgtable-nop4d-hack.h

-- 
2.24.0