Re: [PATCH v1] riscv : support update_mmu_tlb() for riscv

[Andrew Jones]

On Tue, Sep 06, 2022 at 08:19:21PM +0800, Jinyu Tang wrote:
> Add macro definition to support updata_mmu_tlb() for riscv,
> this function is from commit:7df676974359 ("mm/memory.c:Update 
> local TLB if PTE entry exists").
> 
> Signed-off-by: Jinyu Tang <tjytimi@xxxxxxx>
> ---
>  arch/riscv/include/asm/pgtable.h | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
> index 7ec936910a96..84a791d54f95 100644
> --- a/arch/riscv/include/asm/pgtable.h
> +++ b/arch/riscv/include/asm/pgtable.h
> @@ -418,6 +418,9 @@ static inline void update_mmu_cache(struct vm_area_struct *vma,
>  	local_flush_tlb_page(address);
>  }
>  
> +#define	__HAVE_ARCH_UPDATE_MMU_TLB
           ^ just a single space here, please, as all the other
	     'define __HAVE's in this file

> +#define update_mmu_tlb	update_mmu_cache
> +
>  static inline void update_mmu_cache_pmd(struct vm_area_struct *vma,
>  		unsigned long address, pmd_t *pmdp)
>  {
> -- 
> 2.30.2

This seems like the right thing to do, so

Reviewed-by: Andrew Jones <ajones@xxxxxxxxxxxxxxxx>

I'm curious if this patch is the result of debugging something? Or what
led you to post it?

Thanks,
drew