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From: yunhui cui <cuiyunhui@bytedance.com>
Date: Mon, 29 Jan 2024 16:26:57 +0800
Message-ID: <CAEEQ3wnSN8dLh3FcmHq5yPwQRdjLQa_VjcuTH+7YYZLOqCzaCQ@mail.gmail.com>
Subject: Re: [External] Re: [PATCH] RISC-V: add uniprocessor flush_tlb_range() support
To: Jisheng Zhang <jszhang@kernel.org>
Cc: paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, 
	alexghiti@rivosinc.com, samuel.holland@sifive.com, ajones@ventanamicro.com, 
	mchitale@ventanamicro.com, dylan@andestech.com, 
	sergey.matyukevich@syntacore.com, prabhakar.mahadev-lad.rj@bp.renesas.com, 
	apatel@ventanamicro.com, linux-riscv@lists.infradead.org, 
	linux-kernel@vger.kernel.org
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Hi Jisheng,

On Mon, Jan 29, 2024 at 4:02=E2=80=AFPM Jisheng Zhang <jszhang@kernel.org> =
wrote:
>
> On Thu, Jan 25, 2024 at 02:20:44PM +0800, Yunhui Cui wrote:
> > Add support for flush_tlb_range() to improve TLB performance for
> > UP systems. In order to avoid the mutual inclusion of tlbflush.h
> > and hugetlb.h, the UP part is also implemented in tlbflush.c.
>
> Hi Yunhui,
>
> IIRC, Samuel sent similar patch series a few weeks ago.
>
> https://lore.kernel.org/linux-riscv/20240102220134.3229156-1-samuel.holla=
nd@sifive.com/
>
> After that series, do you still need this patch?

Thank you for your reminder. I didn't find it before I mailed my
patch. I just looked at the content of this patch. I understand that
my patch is needed. For a single core, a more concise TLB flush logic
is needed, and it is helpful to improve performance.

Thanks,
Yunhui