[PATCH v3 0/2] move __HAVE_ARCH_PTE_SPECIAL in Kconfig

[Laurent Dufour <ldufour@linux.vnet.ibm.com>]

The per architecture __HAVE_ARCH_PTE_SPECIAL is defined statically in the
per architecture header files. This doesn't allow to make other
configuration dependent on it.

The first patch of this series is replacing __HAVE_ARCH_PTE_SPECIAL by
CONFIG_ARCH_HAS_PTE_SPECIAL defined into the Kconfig files,
setting it automatically when architectures was already setting it in
header file.

The second patch is removing the odd define HAVE_PTE_SPECIAL which is a
duplicate of CONFIG_ARCH_HAS_PTE_SPECIAL.

There is no functional change introduced by this series.

--
Changes since v2:
 * remove __HAVE_ARCH_PTE_SPECIAL in arch/riscv/include/asm/pgtable-bits.h
 * use IS_ENABLED() instead of #ifdef blocks in patch 2

Laurent Dufour (2):
  mm: introduce ARCH_HAS_PTE_SPECIAL
  mm: remove odd HAVE_PTE_SPECIAL

 .../features/vm/pte_special/arch-support.txt          |  2 +-
 arch/arc/Kconfig                                      |  1 +
 arch/arc/include/asm/pgtable.h                        |  2 --
 arch/arm/Kconfig                                      |  1 +
 arch/arm/include/asm/pgtable-3level.h                 |  1 -
 arch/arm64/Kconfig                                    |  1 +
 arch/arm64/include/asm/pgtable.h                      |  2 --
 arch/powerpc/Kconfig                                  |  1 +
 arch/powerpc/include/asm/book3s/64/pgtable.h          |  3 ---
 arch/powerpc/include/asm/pte-common.h                 |  3 ---
 arch/riscv/Kconfig                                    |  1 +
 arch/riscv/include/asm/pgtable-bits.h                 |  3 ---
 arch/s390/Kconfig                                     |  1 +
 arch/s390/include/asm/pgtable.h                       |  1 -
 arch/sh/Kconfig                                       |  1 +
 arch/sh/include/asm/pgtable.h                         |  2 --
 arch/sparc/Kconfig                                    |  1 +
 arch/sparc/include/asm/pgtable_64.h                   |  3 ---
 arch/x86/Kconfig                                      |  1 +
 arch/x86/include/asm/pgtable_types.h                  |  1 -
 include/linux/pfn_t.h                                 |  4 ++--
 mm/Kconfig                                            |  3 +++
 mm/gup.c                                              |  4 ++--
 mm/memory.c                                           | 19 ++++++++-----------
 24 files changed, 25 insertions(+), 37 deletions(-)

-- 
2.7.4