Hi Alistair, On Tue, 10 Sept 2024 at 12:21, Alistair Popple <apopple@xxxxxxxxxx> 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 <apopple@xxxxxxxxxx> > Acked-by: Will Deacon <will@xxxxxxxxxx> # arm64 > --- > 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/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 | 52 +------------------ > arch/powerpc/include/asm/book3s/64/radix.h | 14 +----- > arch/x86/Kconfig | 1 +- > arch/x86/include/asm/pgtable.h | 50 +----------------- > arch/x86/include/asm/pgtable_types.h | 5 +-- RISC-V's references also need to be cleanup, it simply can be done by reverting the commit 216e04bf1e4d (riscv: mm: Add support for ZONE_DEVICE) Thanks, Chunyan > include/linux/mm.h | 7 +-- > include/linux/pfn_t.h | 20 +------- > include/linux/pgtable.h | 19 +------ > mm/Kconfig | 4 +- > mm/debug_vm_pgtable.c | 59 +-------------------- > mm/hmm.c | 3 +- > 18 files changed, 11 insertions(+), 269 deletions(-) >
