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Date:   Sat, 29 May 2021 15:45:02 -0700 (PDT)
Subject:     Re: [PATCH] docs: kernel-parameters: mark numa=off is supported by a bundle of architectures
In-Reply-To: <20210524051715.13604-1-song.bao.hua@hisilicon.com>
CC:     corbet@lwn.net, linux-doc@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org,
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From:   Palmer Dabbelt <palmer@dabbelt.com>
To:     song.bao.hua@hisilicon.com
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On Sun, 23 May 2021 22:17:15 PDT (-0700), song.bao.hua@hisilicon.com wrote:
> risc-v and arm64 support numa=off by common arch_numa_init()
> in drivers/base/arch_numa.c. x86, ppc, mips, sparc support it
> by arch-level early_param.
> numa=off is widely used in linux distributions. it is better
> to document it.
>
> Signed-off-by: Barry Song <song.bao.hua@hisilicon.com>
> ---
>  Documentation/admin-guide/kernel-parameters.txt | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
> index cb89dbdedc46..a388fbdaa2ec 100644
> --- a/Documentation/admin-guide/kernel-parameters.txt
> +++ b/Documentation/admin-guide/kernel-parameters.txt
> @@ -3513,6 +3513,9 @@
>
>  	nr_uarts=	[SERIAL] maximum number of UARTs to be registered.
>
> +	numa=off 	[KNL, ARM64, PPC, RISCV, SPARC, X86] Disable NUMA, Only
> +			set up a single NUMA node spanning all memory.
> +
>  	numa_balancing=	[KNL,ARM64,PPC,RISCV,S390,X86] Enable or disable automatic
>  			NUMA balancing.
>  			Allowed values are enable and disable

Acked-by: Palmer Dabbelt <palmerdabbelt@google.com>

Thanks!