Re: [PATCH v6 2/2] arm64: support batched/deferred tlb shootdown during page reclamation

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On Nov 14, 2022, at 7:14 PM, Yicong Yang <yangyicong@xxxxxxxxxx> wrote:

> diff --git a/arch/x86/include/asm/tlbflush.h b/arch/x86/include/asm/tlbflush.h
> index 8a497d902c16..5bd78ae55cd4 100644
> --- a/arch/x86/include/asm/tlbflush.h
> +++ b/arch/x86/include/asm/tlbflush.h
> @@ -264,7 +264,8 @@ static inline u64 inc_mm_tlb_gen(struct mm_struct *mm)
> }
> 
> static inline void arch_tlbbatch_add_mm(struct arch_tlbflush_unmap_batch *batch,
> -					struct mm_struct *mm)
> +					struct mm_struct *mm,
> +					unsigned long uaddr)

Logic-wise it looks fine. I notice the “v6", and it should not be blocking,
but I would note that the name "arch_tlbbatch_add_mm()” does not make much
sense once the function also takes an address.

It could’ve been something like arch_set_tlb_ubc_flush_pending() but that’s
too long. I’m not very good with naming, but the current name is not great.






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