On Thu, May 29, 2025 at 04:32:11PM +1000, Alistair Popple wrote: > Now that DAX and all other reference counts to ZONE_DEVICE pages are > managed normally there is no need for the special devmap PTE/PMD/PUD > page table bits. So drop all references to these, freeing up a > software defined page table bit on architectures supporting it. > > Signed-off-by: Alistair Popple <apop...@nvidia.com> > Acked-by: Will Deacon <w...@kernel.org> # arm64 > Suggested-by: Chunyan Zhang <zhang.l...@gmail.com> > Reviewed-by: Björn Töpel <bj...@rivosinc.com> > --- > Documentation/mm/arch_pgtable_helpers.rst | 6 +-- > arch/arm64/Kconfig | 1 +- > arch/arm64/include/asm/pgtable-prot.h | 1 +- > arch/arm64/include/asm/pgtable.h | 24 +-------- > arch/loongarch/Kconfig | 1 +- > arch/loongarch/include/asm/pgtable-bits.h | 6 +-- > arch/loongarch/include/asm/pgtable.h | 19 +------ > arch/powerpc/Kconfig | 1 +- > arch/powerpc/include/asm/book3s/64/hash-4k.h | 6 +-- > arch/powerpc/include/asm/book3s/64/hash-64k.h | 7 +-- > arch/powerpc/include/asm/book3s/64/pgtable.h | 53 +------------------ > arch/powerpc/include/asm/book3s/64/radix.h | 14 +----- > arch/riscv/Kconfig | 1 +- > arch/riscv/include/asm/pgtable-64.h | 20 +------- > arch/riscv/include/asm/pgtable-bits.h | 1 +- > arch/riscv/include/asm/pgtable.h | 17 +------ > arch/x86/Kconfig | 1 +- > arch/x86/include/asm/pgtable.h | 51 +----------------- > arch/x86/include/asm/pgtable_types.h | 5 +-- > include/linux/mm.h | 7 +-- > include/linux/pgtable.h | 19 +------ > mm/Kconfig | 4 +- > mm/debug_vm_pgtable.c | 59 +-------------------- > mm/hmm.c | 3 +- > mm/madvise.c | 8 +-- > 25 files changed, 17 insertions(+), 318 deletions(-)
Reviewed-by: Jason Gunthorpe <j...@nvidia.com> Jason
