[0/5] Provide a single definition of mk_pte()

Message

Matthew Wilcox Aug. 14, 2024, 3:44 p.m. UTC

Each architecturee must provide a definition of mk_pte() today.  They must
also provide pfn_pte().  Usually the former is defined in terms of the
latter, but not on some architectures.  I was trying to decide what we
should do for creating PTEs in a folio world, and it struck me that we
should have architectures only provide pfn_pte() and then I don't need
to trouble the arch maintainers with whatever MM API I come up with.

The architectures not on the cc list I considered trivial.  The
architectures who have named patches are less trivial, and I did my
best to write a decent commit message explaining why I did what I did
to each architecture.

I have some followup patches which remove folio->page conversions, but
if this set of patches are wrong on any architecture, then they'll also
be wrong, so I'm not sending them right now.

Matthew Wilcox (Oracle) (5):
  mm: Introduce a common definition of mk_pte()
  x86: Remove custom definition of mk_pte()
  um: Remove custom definition of mk_pte()
  s390: Remove custom definition of mk_pte()
  mm: Make mk_pte() definition unconditional

 arch/alpha/include/asm/pgtable.h         |  7 -------
 arch/arc/include/asm/pgtable-levels.h    |  1 -
 arch/arm/include/asm/pgtable.h           |  1 -
 arch/arm64/include/asm/pgtable.h         |  6 ------
 arch/csky/include/asm/pgtable.h          |  5 -----
 arch/hexagon/include/asm/pgtable.h       |  3 ---
 arch/loongarch/include/asm/pgtable.h     |  6 ------
 arch/m68k/include/asm/mcf_pgtable.h      |  6 ------
 arch/m68k/include/asm/motorola_pgtable.h |  6 ------
 arch/m68k/include/asm/sun3_pgtable.h     |  6 ------
 arch/microblaze/include/asm/pgtable.h    |  8 --------
 arch/mips/include/asm/pgtable.h          |  6 ------
 arch/nios2/include/asm/pgtable.h         |  6 ------
 arch/openrisc/include/asm/pgtable.h      |  2 --
 arch/parisc/include/asm/pgtable.h        |  2 --
 arch/powerpc/include/asm/pgtable.h       |  1 -
 arch/riscv/include/asm/pgtable.h         |  2 --
 arch/s390/include/asm/pgtable.h          | 10 ----------
 arch/sh/include/asm/pgtable_32.h         |  8 --------
 arch/sparc/include/asm/pgtable_32.h      |  9 ++-------
 arch/sparc/include/asm/pgtable_64.h      |  1 -
 arch/um/include/asm/pgtable-2level.h     |  1 -
 arch/um/include/asm/pgtable-3level.h     |  9 ---------
 arch/um/include/asm/pgtable.h            | 17 ++++++++++-------
 arch/x86/include/asm/pgtable.h           | 19 +++----------------
 arch/xtensa/include/asm/pgtable.h        |  1 -
 include/linux/pgtable.h                  |  5 +++++
 27 files changed, 20 insertions(+), 134 deletions(-)