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SubjectRe: [PATCH] Documentation/admin-guide: mark memmap parameter is supported by a few architectures
On Wed, Nov 18, 2020 at 02:41:45PM +1300, Barry Song wrote:
> early_param memmap is only implemented on X86, MIPS and XTENSA. To avoid
> wasting users’ time on trying this on platform like ARM, mark it clearly.
>
> Signed-off-by: Barry Song <song.bao.hua@hisilicon.com>

Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>

> ---
> * the background was that I spent one hour on using memmap on arm64, only
> to find memmap= is not implemented on most architectures;
>
> Documentation/admin-guide/kernel-parameters.rst | 1 +
> Documentation/admin-guide/kernel-parameters.txt | 2 +-
> 2 files changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/admin-guide/kernel-parameters.rst b/Documentation/admin-guide/kernel-parameters.rst
> index 6d421694d98e..06fb1b4aa849 100644
> --- a/Documentation/admin-guide/kernel-parameters.rst
> +++ b/Documentation/admin-guide/kernel-parameters.rst
> @@ -172,6 +172,7 @@ parameter is applicable::
> X86 Either 32-bit or 64-bit x86 (same as X86-32+X86-64)
> X86_UV SGI UV support is enabled.
> XEN Xen support is enabled
> + XTENSA xtensa architecture is enabled.
>
> In addition, the following text indicates that the option::
>
> diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
> index 526d65d8573a..8bdbc555f221 100644
> --- a/Documentation/admin-guide/kernel-parameters.txt
> +++ b/Documentation/admin-guide/kernel-parameters.txt
> @@ -2709,7 +2709,7 @@
> option description.
>
> memmap=nn[KMG]@ss[KMG]
> - [KNL] Force usage of a specific region of memory.
> + [KNL, X86, MIPS, XTENSA] Force usage of a specific region of memory.
> Region of memory to be used is from ss to ss+nn.
> If @ss[KMG] is omitted, it is equivalent to mem=nn[KMG],
> which limits max address to nn[KMG].
> --
> 2.25.1
>

--
Sincerely yours,
Mike.

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