linux-kernel - Re: [PATCH 16/67] powerpc: rename dma_direct_ to dma_nommu

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Message-ID: <CAMuHMdWWus2kNSOzS94k-3678826W1YjKwCWTquu3hBLZ80cvw@mail.gmail.com>
Date:   Tue, 2 Jan 2018 11:22:35 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Michael Ellerman <mpe@...erman.id.au>
Cc:     Christoph Hellwig <hch@....de>, iommu@...ts.linux-foundation.org,
        Linux MIPS Mailing List <linux-mips@...ux-mips.org>,
        linux-ia64@...r.kernel.org,
        Linux-sh list <linux-sh@...r.kernel.org>,
        sparclinux <sparclinux@...r.kernel.org>,
        Guan Xuetao <gxt@...c.pku.edu.cn>,
        Linux-Arch <linux-arch@...r.kernel.org>,
        linux-s390 <linux-s390@...r.kernel.org>,
        linux-c6x-dev@...ux-c6x.org,
        "open list:QUALCOMM HEXAGON..." <linux-hexagon@...r.kernel.org>,
        "the arch/x86 maintainers" <x86@...nel.org>,
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        linux-arm-kernel@...ts.infradead.org,
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Subject: Re: [PATCH 16/67] powerpc: rename dma_direct_ to dma_nommu_

On Tue, Jan 2, 2018 at 10:45 AM, Michael Ellerman <mpe@...erman.id.au> wrote:
> Christoph Hellwig <hch@....de> writes:
>
>> We want to use the dma_direct_ namespace for a generic implementation,
>> so rename powerpc to the second best choice: dma_nommu_.
>
> I'm not a fan of "nommu". Some of the users of direct ops *are* using an
> IOMMU, they're just setting up a 1:1 mapping once at init time, rather
> than mapping dynamically.
>
> Though I don't have a good idea for a better name, maybe "1to1",
> "linear", "premapped" ?

"identity"?

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds