linux-kernel - Re: [PATCH v3 2/3] riscv: dma-mapping: skip invalidation before bidirectional DMA

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Date:   Sun, 27 Aug 2023 15:41:08 -0400
From:   "Arnd Bergmann" <arnd@...db.de>
To:     "Jisheng Zhang" <jszhang@...nel.org>,
        Prabhakar <prabhakar.csengg@...il.com>
Cc:     "Christoph Hellwig" <hch@....de>,
        "Paul Walmsley" <paul.walmsley@...ive.com>,
        "Palmer Dabbelt" <palmer@...belt.com>,
        "Albert Ou" <aou@...s.berkeley.edu>,
        "Conor.Dooley" <conor.dooley@...rochip.com>,
        "Anup Patel" <apatel@...tanamicro.com>,
        "Andrew Jones" <ajones@...tanamicro.com>,
        linux-kernel@...r.kernel.org,
        "Geert Uytterhoeven" <geert+renesas@...der.be>,
        "Samuel Holland" <samuel@...lland.org>,
        linux-riscv@...ts.infradead.org,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        "Lad, Prabhakar" <prabhakar.mahadev-lad.rj@...renesas.com>,
        "Palmer Dabbelt" <palmer@...osinc.com>, guoren <guoren@...nel.org>
Subject: Re: [PATCH v3 2/3] riscv: dma-mapping: skip invalidation before bidirectional
 DMA

On Sun, Aug 27, 2023, at 06:22, Jisheng Zhang wrote:
> On Thu, Aug 17, 2023 at 12:23:35AM +0100, Prabhakar wrote:
>
> The code could be simplified a lot since after this patch, the action
> is always "clean".
>

I think it's better to leave it at the elaborate version, as I still
want to merge my patch series to unify this with the other architectures,
and this would introduce a few compile-time conditionals in here.

      Arnd