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Date:   Thu, 23 Sep 2021 02:08:39 +0200
From:   Linus Walleij <>
To:     Geert Uytterhoeven <>
Cc:     Russell King <>,
        Nicolas Pitre <>,
        Ard Biesheuvel <>,
        Lukasz Stelmach <>,
        Simon Horman <>,
        Linux ARM <>,
        linux-kernel <>,
Subject: Re: [PATCH v6] ARM: uncompress: Parse "linux,usable-memory-range" DT property

On Wed, Sep 15, 2021 at 3:20 PM Geert Uytterhoeven
<> wrote:

> Add support for parsing the "linux,usable-memory-range" DT property.
> This property is used to describe the usable memory reserved for the
> crash dump kernel, and thus makes the memory reservation explicit.
> If present, Linux no longer needs to mask the program counter, and rely
> on the "mem=" kernel parameter to obtain the start and size of usable
> memory.
> For backwards compatibility, the traditional method to derive the start
> of memory is still used if "linux,usable-memory-range" is absent.
> Signed-off-by: Geert Uytterhoeven <>

Very nice patch!
Reviewed-by: Linus Walleij <>

Linus Walleij

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