[RFC V3 0/8] mm: Drop pxd_ERROR()

[Anshuman Khandual]

pxd_ERROR() macros have been provided by all platforms, which are very much
identical and can be dropped off completely if these pgtable printing could
be moved to callers in generic MM aka all pxd_clear_bad().

But first cleanups and re-organizations are required in some platforms that
are using these macros internally. Afterwards [pte|pmd|pud|p4d|pgd]_ERROR()
macros have been completely dropped from the entire tree.

This series is based on v7.2 after the following patch and has also been
built tested on multiple platforms.

https://lore.kernel.org/all/20260709044334.1741263-1-anshuman.khandual@arm.com/

Changes in RFC V3:

- Moved ptrval_to_str() as header in a separate patch
- Stopped using pxd_ERROR() in generic MM in a separate patch
- Dropped pxd_ERRO() macros from all platforms in a separate patch
- Dropped print_bad_pte() and also cleaned up set_pte_phys()
- Added some pr_error() messages in __get_pte_phys()
- Cleaned up error messages and used ptrval_to_str() in platforms

Changes in RFC V2:

https://lore.kernel.org/all/20260811042119.3652929-1-anshuman.khandual@arm.com/

- Added clean up patches for platforms with existing pxd_ERROR() usage
- Dropped __FILE__ and __LINE__ from all print sections per David

Changes in RFC V1:

https://lore.kernel.org/all/20260806080639.1916749-1-anshuman.khandual@arm.com/

Cc: Yoshinori Sato <ysato at users.sourceforge.jp>
Cc: Rich Felker <dalias at libc.org>
Cc: John Paul Adrian Glaubitz <glaubitz at physik.fu-berlin.de>
Cc: "James E.J. Bottomley" <James.Bottomley at HansenPartnership.com>
Cc: Helge Deller <deller at gmx.de>
Cc: Huacai Chen <chenhuacai at kernel.org>
Cc: WANG Xuerui <kernel at xen0n.name>
Cc: linux-alpha at vger.kernel.org
Cc: linux-snps-arc at lists.infradead.org
Cc: linux-arm-kernel at lists.infradead.org
Cc: linux-csky at vger.kernel.org
Cc: linux-hexagon at vger.kernel.org
Cc: loongarch at lists.linux.dev
Cc: linux-m68k at lists.linux-m68k.org
Cc: linux-mips at vger.kernel.org
Cc: linux-openrisc at vger.kernel.org
Cc: linux-parisc at vger.kernel.org
Cc: linuxppc-dev at lists.ozlabs.org
Cc: linux-riscv at lists.infradead.org
Cc: linux-s390 at vger.kernel.org
Cc: linux-sh at vger.kernel.org
Cc: sparclinux at vger.kernel.org
Cc: linux-um at lists.infradead.org
Cc: linux-arch at vger.kernel.org
Cc: linux-mm at kvack.org
Cc: linux-kernel at vger.kernel.org

Anshuman Khandual (8):
  mm: Make ptrval_to_str() generally available
  mm: Stop using pxd_ERROR()
  loongarch/mm: Stop using pte_ERROR()
  parisc/mm: Directly use generic [pmd|pgd]_clear_bad()
  sh/mm: Stop using pte_ERROR()
  sh/mm: Stop using [p4d|pud|pmd]_ERROR()
  sh/mm: Stop using pgd_ERROR()
  mm: Drop pxd_ERROR()

 arch/alpha/include/asm/pgtable.h              |  7 -------
 arch/arc/include/asm/pgtable-levels.h         | 11 ----------
 arch/arm/include/asm/pgtable.h                |  7 -------
 arch/arm/kernel/traps.c                       | 17 ---------------
 arch/arm64/include/asm/pgtable.h              | 15 -------------
 arch/csky/include/asm/pgtable.h               |  4 ----
 arch/hexagon/include/asm/pgtable.h            |  3 ---
 arch/loongarch/include/asm/pgtable.h          | 13 ------------
 arch/loongarch/mm/init.c                      |  4 +++-
 arch/m68k/include/asm/mcf_pgtable.h           |  6 ------
 arch/m68k/include/asm/motorola_pgtable.h      |  8 -------
 arch/m68k/include/asm/sun3_pgtable.h          |  7 -------
 arch/microblaze/include/asm/pgtable.h         |  7 -------
 arch/mips/include/asm/pgtable-32.h            | 10 ---------
 arch/mips/include/asm/pgtable-64.h            | 13 ------------
 arch/nios2/include/asm/pgtable.h              |  7 -------
 arch/openrisc/include/asm/pgtable.h           |  7 -------
 arch/parisc/include/asm/pgtable.h             |  9 --------
 arch/parisc/kernel/pci-dma.c                  |  6 ++----
 arch/powerpc/include/asm/book3s/32/pgtable.h  |  2 --
 arch/powerpc/include/asm/book3s/64/pgtable.h  |  7 -------
 arch/powerpc/include/asm/nohash/32/pgtable.h  |  2 --
 .../include/asm/nohash/64/pgtable-4k.h        |  3 ---
 arch/powerpc/include/asm/nohash/64/pgtable.h  |  5 -----
 arch/riscv/include/asm/pgtable-64.h           |  9 --------
 arch/riscv/include/asm/pgtable.h              |  4 ----
 arch/s390/include/asm/pgtable.h               | 11 ----------
 arch/sh/include/asm/pgtable-3level.h          |  3 ---
 arch/sh/include/asm/pgtable_32.h              | 13 ------------
 arch/sh/mm/init.c                             | 16 +++++++-------
 arch/sparc/include/asm/pgtable_32.h           |  3 ---
 arch/sparc/include/asm/pgtable_64.h           | 10 ---------
 arch/um/include/asm/pgtable-2level.h          |  7 -------
 arch/um/include/asm/pgtable-4level.h          | 13 ------------
 arch/x86/include/asm/pgtable-2level.h         |  5 -----
 arch/x86/include/asm/pgtable-3level.h         | 11 ----------
 arch/x86/include/asm/pgtable_64.h             | 18 ----------------
 arch/xtensa/include/asm/pgtable.h             |  4 ----
 include/asm-generic/pgtable-nop4d.h           |  1 -
 include/asm-generic/pgtable-nopmd.h           |  1 -
 include/asm-generic/pgtable-nopud.h           |  1 -
 include/linux/mm_types.h                      | 15 +++++++++++++
 mm/memory.c                                   | 16 ++------------
 mm/pgtable-generic.c                          | 21 +++++++++++++++----
 44 files changed, 48 insertions(+), 314 deletions(-)

-- 
2.43.0