linux-kernel - Re: [PATCH v3 0/6] arm64: Get rid of __early_init_dt_declare

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Date:   Mon, 5 Nov 2018 14:31:39 -0600
From:   Rob Herring <robh@...nel.org>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     linux-kernel@...r.kernel.org,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Frank Rowand <frowand.list@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Marc Zyngier <marc.zyngier@....com>,
        Russell King <rmk+kernel@...linux.org.uk>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Andrey Konovalov <andreyknvl@...gle.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Robin Murphy <robin.murphy@....com>,
        Laura Abbott <labbott@...hat.com>,
        Stefan Agner <stefan@...er.ch>,
        Johannes Weiner <hannes@...xchg.org>,
        Greg Hackmann <ghackmann@...roid.com>,
        Kristina Martsenko <kristina.martsenko@....com>,
        CHANDAN VN <chandan.vn@...sung.com>,
        "moderated list:ARM64 PORT (AARCH64 ARCHITECTURE)" 
        <linux-arm-kernel@...ts.infradead.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE" 
        <devicetree@...r.kernel.org>, rppt@...ux.ibm.com,
        linux@...linux.org.uk, green.hu@...il.com, deanbo422@...il.com,
        gxt@....edu.cn, ard.biesheuvel@...aro.org,
        linux-snps-arc@...ts.infradead.org, vgupta@...opsys.com
Subject: Re: [PATCH v3 0/6] arm64: Get rid of __early_init_dt_declare_initrd()

On Wed, Oct 31, 2018 at 12:28:37PM -0700, Florian Fainelli wrote:
> Hi all,
> 
> Changes in v3:
> 
> - use C conditionals in drivers/of/fdt.c
> - added check on phys_initrd_size in arch/arm64/mm/init.c to determine
>   whether initrd_start must be populated
> - fixed a build warning with ARC that was just missing an (unsigned
>   long) cast
> 
> Changes in v2:
> 
> - get rid of ARCH_HAS_PHYS_INITRD and instead define
>   phys_initrd_start/phys_initrd_size in init/do_mounts_initrd.c
> 
> - make __early_init_dt_declare_initrd() account for ARM64 specific
>   behavior with __va() when having CONFIG_DEBUG_VM enabled
> 
> - consolidate early_initrd() command line parsing into
>   init/do_mounts_initrd.c
> 
> Because phys_initrd_start/phys_initrd_size are now compiled in
> ini/do_mounts_initrd.c which is only built with CONFIG_BLK_DEV_INITRD=y,
> we need to be a bit careful about the uses throughout architecture
> specific code.
> 
> Previous discussions/submissions list here:
> 
> v3:
> https://www.spinics.net/lists/arm-kernel/msg683566.html
> v2:
> https://lkml.org/lkml/2018/10/25/4
> 
> Florian Fainelli (6):
>   nds32: Remove phys_initrd_start and phys_initrd_size
>   arch: Make phys_initrd_start and phys_initrd_size global variables
>   of/fdt: Populate phys_initrd_start/phys_initrd_size from FDT
>   arm64: Utilize phys_initrd_start/phys_initrd_size
>   of/fdt: Remove custom __early_init_dt_declare_initrd() implementation
>   arch: Move initrd= parsing into do_mounts_initrd.c

This all looks good to me. I can take it via the DT if you want. I'll 
give folks some more time to review though.

Rob

> 
>  arch/arc/mm/init.c              | 25 +++++--------------------
>  arch/arm/mm/init.c              | 28 ++--------------------------
>  arch/arm64/include/asm/memory.h |  8 --------
>  arch/arm64/mm/init.c            | 33 +++++++--------------------------
>  arch/nds32/mm/init.c            |  2 --
>  arch/unicore32/mm/init.c        | 24 +++++-------------------
>  drivers/of/fdt.c                | 17 ++++++++++++-----
>  include/linux/initrd.h          |  3 +++
>  init/do_mounts_initrd.c         | 20 ++++++++++++++++++++
>  9 files changed, 54 insertions(+), 106 deletions(-)
> 
> -- 
> 2.17.1
>