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Date:   Sat, 27 Feb 2021 09:03:53 +0800
From:   Kefeng Wang <wangkefeng.wang@...wei.com>
To:     Palmer Dabbelt <palmer@...belt.com>, <akpm@...ux-foundation.org>,
        <atishp@...shpatra.org>
CC:     <aou@...s.berkeley.edu>, Palmer Dabbelt <palmerdabbelt@...gle.com>,
        <linux-kernel@...r.kernel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        <linux-riscv@...ts.infradead.org>, <kernel-team@...roid.com>
Subject: Re: [PATCH] RISC-V: Make NUMA depend on SMP


On 2021/2/27 4:25, Palmer Dabbelt wrote:
> From: Palmer Dabbelt <palmerdabbelt@...gle.com>
>
> In theory these are orthogonal, but in practice all NUMA systems are
> SMP.  NUMA && !SMP doesn't build, everyone else is coupling them, and I
> don't really see any value in supporting that configuration.
>
> Fixes: 4f0e8eef772e ("riscv: Add numa support for riscv64 platform")
> Suggested-by: Andrew Morton <akpm@...ux-foundation.org>
> Suggested-by: Atish Patra <atishp@...shpatra.org>
> Signed-off-by: Palmer Dabbelt <palmerdabbelt@...gle.com>

Reported-and-Tested-by:  Kefeng Wang <wangkefeng.wang@...wei.com>


> ---
> This is on fixes.
> ---
>   arch/riscv/Kconfig | 1 +
>   1 file changed, 1 insertion(+)
>
> diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
> index a998babc1237..85d626b8ce5e 100644
> --- a/arch/riscv/Kconfig
> +++ b/arch/riscv/Kconfig
> @@ -314,6 +314,7 @@ endchoice
>   # Common NUMA Features
>   config NUMA
>   	bool "NUMA Memory Allocation and Scheduler Support"
> +	depends on SMP
>   	select GENERIC_ARCH_NUMA
>   	select OF_NUMA
>   	select ARCH_SUPPORTS_NUMA_BALANCING

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