linux-kernel - Re: [PATCH 0/8] add generic builtin command line

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Message-ID: <CAMT6-xiQ0vGcKpA+SiWHQWQFwU9Oo9j=Zin+UXDoPqKTz5fbeA@mail.gmail.com>
Date:   Mon, 8 Oct 2018 21:01:28 +0300
From:   Maksym Kokhan <maksym.kokhan@...ballogic.com>
To:     Daniel Walker <dwalker@...o99.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        Russell King <linux@...linux.org.uk>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Paul Burton <paul.burton@...s.com>,
        James Hogan <jhogan@...nel.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Daniel Walker <danielwa@...co.com>,
        Andrii Bordunov <aborduno@...co.com>,
        Ruslan Bilovol <rbilovol@...co.com>,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-efi@...r.kernel.org, linux-mips@...ux-mips.org,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH 0/8] add generic builtin command line

Hi, Daniel

On Sat, Sep 29, 2018 at 9:17 PM <dwalker@...o99.com> wrote:
>
> On Thu, Sep 27, 2018 at 07:55:08PM +0300, Maksym Kokhan wrote:
> > Daniel Walker (7):
> >   add generic builtin command line
> >   drivers: of: ifdef out cmdline section
> >   x86: convert to generic builtin command line
> >   arm: convert to generic builtin command line
> >   arm64: convert to generic builtin command line
> >   mips: convert to generic builtin command line
> >   powerpc: convert to generic builtin command line
> >
>
> When I originally submitted these I had a very good conversion with Rob Herring
> on the device tree changes. It seemed fairly clear that my approach in these
> changes could be done better. It effected specifically arm64, but a lot of other
> platforms use the device tree integrally. With arm64 you can reduce the changes
> down to only Kconfig changes, and that would likely be the case for many of the
> other architecture. I made patches to do this a while back, but have not had
> time to test them and push them out.

Can you please share this patches? I could test them and use to improve this
generic command line implementation.

> In terms of mips I think there's a fair amount of work needed to pull out their
> architecture specific mangling into something generic. Part of my motivation for
> these was to take the architecture specific feature and open that up for all the
> architecture. So it makes sense that the mips changes should become part of
> that.

This is really makes sense, and we have intentions to implement it
afterward. It would be easier to initially merge this simple
implementation and then develop it step by step.

> The only changes which have no comments are the generic changes, x86, and
> powerpc. Those patches have been used at Cisco for years with no issues.
> I added those changes into my -next tree for a round of testing. Assuming there
> are no issues I can work out the merging with the architecture maintainers.
> As for the other changes I think they can be done in time, as long as the
> generic parts of upstream the rest can be worked on by any of the architecture
> developers.

Thanks,
Maksym