"Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxx> writes:
> Architectures like ppc64 support faster mremap only with radix
> translation. Hence allow a runtime check w.r.t support for fast mremap.
>
> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxx>
> ---
> arch/powerpc/include/asm/tlb.h | 6 ++++++
> mm/mremap.c | 15 ++++++++++++++-
> 2 files changed, 20 insertions(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/include/asm/tlb.h b/arch/powerpc/include/asm/tlb.h
> index 160422a439aa..058918a7cd3c 100644
> --- a/arch/powerpc/include/asm/tlb.h
> +++ b/arch/powerpc/include/asm/tlb.h
> @@ -83,5 +83,11 @@ static inline int mm_is_thread_local(struct mm_struct *mm)
> }
> #endif
>
> +#define arch_supports_page_tables_move arch_supports_page_tables_move
> +static inline bool arch_supports_page_tables_move(void)
> +{
> + return radix_enabled();
> +}
Not sure it's worth a respin on its own, but page table*s* move is
slightly strange phrasing.
arch_supports_move_page_tables() or arch_supports_page_table_move()
would be more typical.
cheers
