linux-kernel - Re: [PATCH v5 0/9] Add generic support for kdump DT properties

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Date:   Sun, 15 Aug 2021 10:25:03 -0500
From:   Rob Herring <robh@...nel.org>
To:     Geert Uytterhoeven <geert+renesas@...der.be>
Cc:     Russell King <linux@...linux.org.uk>,
        Nicolas Pitre <nico@...xnic.net>,
        Ard Biesheuvel <ardb@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Nick Kossifidis <mick@....forth.gr>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Frank Rowand <frowand.list@...il.com>,
        Dave Young <dyoung@...hat.com>, Baoquan He <bhe@...hat.com>,
        Vivek Goyal <vgoyal@...hat.com>,
        Mike Rapoport <rppt@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-mips@...r.kernel.org,
        linux-riscv@...ts.infradead.org, kexec@...ts.infradead.org,
        linux-renesas-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 0/9] Add generic support for kdump DT properties

On Wed, Aug 11, 2021 at 10:50:58AM +0200, Geert Uytterhoeven wrote:
> 	Hi all,
> 
> This patch series adds generic support for parsing DT properties related
> to crash dump kernels ("linux,elfcorehdr" and "linux,elfcorehdr" under
> the "/chosen" node), makes use of it on arm32, and performs a few
> cleanups.  It is an evolution of the combination of [1] and [2].

The DT bits look fine to me. How do you expect this to be merged? I'm 
happy to take it if arch maintainers can ack it.

> 
> The series consists of 6 parts:
>   1. Patch 1 prepares architecture-specific code (needed for MIPS only)
>      to avoid duplicating elf core header reservation later.
>   2. Patch 2 prepares the visibility of variables used to hold
>      information retrieved from the DT properties.
>   3. Patches 3-5 add support to the FDT core for handling the
>      properties.
>      This can co-exist safely with architecture-specific handling, until
>      the latter has been removed.

Looks like patch 5 doesn't have any dependencies with the series?

>   4. Patch 6 removes the non-standard handling of "linux,elfcorehdr" on
>      riscv.

I thought this should be applied for 5.14?

>   5. Patches 7-8 convert arm64 to use the generic handling instead of
>      its own implementation.
>   6. Patch 9 adds support for kdump properties to arm32.
>      The corresponding patch for kexec-tools is "[PATCH] arm: kdump: Add
>      DT properties to crash dump kernel's DTB"[3], which is still valid.

This one can be applied on its own, right?

Rob