linux-kernel - Re: [PATCH v5 1/3] arm64: map FDT as RW for early_init_dt

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Message-ID: <5ced5861.1c69fb81.956d8.5fb2@mx.google.com>
Date:   Tue, 28 May 2019 08:48:48 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Hsin-Yi Wang <hsinyi@...omium.org>,
        linux-arm-kernel@...ts.infradead.org
Cc:     Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Frank Rowand <frowand.list@...il.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        Miles Chen <miles.chen@...iatek.com>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        James Morse <james.morse@....com>,
        Andrew Murray <andrew.murray@....com>,
        Mark Rutland <mark.rutland@....com>,
        Jun Yao <yaojun8558363@...il.com>, Yu Zhao <yuzhao@...gle.com>,
        Robin Murphy <robin.murphy@....com>,
        Laura Abbott <labbott@...hat.com>,
        Kees Cook <keescook@...omium.org>,
        Nicolas Boichat <drinkcat@...omium.org>
Subject: Re: [PATCH v5 1/3] arm64: map FDT as RW for early_init_dt_scan()

Quoting Hsin-Yi Wang (2019-05-26 21:33:34)
> Currently in arm64, FDT is mapped to RO before it's passed to
> early_init_dt_scan(). However, there might be some codes
> (eg. commit "fdt: add support for rng-seed") that need to modify FDT
> during init. Map FDT to RO after early fixups are done.
> 
> Signed-off-by: Hsin-Yi Wang <hsinyi@...omium.org>
> ---

Reviewed-by: Stephen Boyd <swboyd@...omium.org>