On Thu, Jun 27, 2024 at 10:54:28AM +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 <apopple@xxxxxxxxxx> > --- > 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 +-------- Not only do you exclusively remove code, but you also give us back a pte bit! What's not to like? Acked-by: Will Deacon <will@xxxxxxxxxx> # arm64 Will
