Re: [PATCH v13 2/3] arm64: tlbflush: Introduce __flush_tlb_kernel_pgtable

[Will Deacon]

On Wed, Jun 06, 2018 at 12:31:20PM +0530, Chintan Pandya wrote:
> Add an interface to invalidate intermediate page tables
> from TLB for kernel.
> 
> Signed-off-by: Chintan Pandya <cpandya@xxxxxxxxxxxxxx>
> ---
>  arch/arm64/include/asm/tlbflush.h | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/arch/arm64/include/asm/tlbflush.h b/arch/arm64/include/asm/tlbflush.h
> index dfc61d7..a4a1901 100644
> --- a/arch/arm64/include/asm/tlbflush.h
> +++ b/arch/arm64/include/asm/tlbflush.h
> @@ -218,6 +218,13 @@ static inline void __flush_tlb_pgtable(struct mm_struct *mm,
>  	dsb(ish);
>  }
>  
> +static inline void __flush_tlb_kernel_pgtable(unsigned long kaddr)
> +{
> +	unsigned long addr = __TLBI_VADDR(kaddr, 0);
> +
> +	__tlbi(vaae1is, addr);
> +	dsb(ish);
> +}
>  #endif

Acked-by: Will Deacon <will.deacon@xxxxxxx>

Will