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Subject: Re: [PATCH 2/3] Documentation: riscv: Add documentation that
 describes the VM layout
To:     Alexandre Ghiti <alex@ghiti.fr>, Jonathan Corbet <corbet@lwn.net>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Palmer Dabbelt <palmer@dabbelt.com>,
        Albert Ou <aou@eecs.berkeley.edu>,
        Arnd Bergmann <arnd@arndb.de>,
        Andrey Ryabinin <aryabinin@virtuozzo.com>,
        Alexander Potapenko <glider@google.com>,
        Dmitry Vyukov <dvyukov@google.com>, linux-doc@vger.kernel.org,
        linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
        kasan-dev@googlegroups.com, linux-arch@vger.kernel.org,
        linux-mm@kvack.org
References: <20210225080453.1314-1-alex@ghiti.fr>
 <20210225080453.1314-3-alex@ghiti.fr>
From:   David Hildenbrand <david@redhat.com>
Organization: Red Hat GmbH
Message-ID: <5279e97c-3841-717c-2a16-c249a61573f9@redhat.com>
Date:   Thu, 25 Feb 2021 11:34:13 +0100
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                  |            |                  |         |> + 
ffffffc000000000 | -256    GB | ffffffc7ffffffff |   32 GB | kasan
> +   ffffffcefee00000 | -196    GB | ffffffcefeffffff |    2 MB | fixmap
> +   ffffffceff000000 | -196    GB | ffffffceffffffff |   16 MB | PCI io
> +   ffffffcf00000000 | -196    GB | ffffffcfffffffff |    4 GB | vmemmap
> +   ffffffd000000000 | -192    GB | ffffffdfffffffff |   64 GB | vmalloc/ioremap space
> +   ffffffe000000000 | -128    GB | ffffffff7fffffff |  126 GB | direct mapping of all physical memory

^ So you could never ever have more than 126 GB, correct?

I assume that's nothing new.

-- 
Thanks,

David / dhildenb