linux-kernel - Re: [PATCH] LoongArch: Remove a bogus reference to ZONE

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Message-ID: <Z-6XzG8En35-vg-H@kernel.org>
Date: Thu, 3 Apr 2025 17:14:36 +0300
From: Mike Rapoport <rppt@...nel.org>
To: Petr Tesarik <ptesarik@...e.com>
Cc: Huacai Chen <chenhuacai@...nel.org>, WANG Xuerui <kernel@...0n.name>,
	Guo Weikang <guoweikang.kernel@...il.com>,
	Bibo Mao <maobibo@...ngson.cn>, loongarch@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] LoongArch: Remove a bogus reference to ZONE_DMA

On Thu, Apr 03, 2025 at 04:11:25PM +0200, Petr Tesarik wrote:
> Remove dead code. LoongArch does not have a DMA memory zone. The
> architecture does not even define MAX_DMA_PFN.
> 
> Signed-off-by: Petr Tesarik <ptesarik@...e.com>

Reviewed-by: Mike Rapoport (Microsoft) <rppt@...nel.org>

> ---
>  arch/loongarch/mm/init.c | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/arch/loongarch/mm/init.c b/arch/loongarch/mm/init.c
> index ca5aa5f46a9f..7fab370efa74 100644
> --- a/arch/loongarch/mm/init.c
> +++ b/arch/loongarch/mm/init.c
> @@ -65,9 +65,6 @@ void __init paging_init(void)
>  {
>  	unsigned long max_zone_pfns[MAX_NR_ZONES];
>  
> -#ifdef CONFIG_ZONE_DMA
> -	max_zone_pfns[ZONE_DMA] = MAX_DMA_PFN;
> -#endif
>  #ifdef CONFIG_ZONE_DMA32
>  	max_zone_pfns[ZONE_DMA32] = MAX_DMA32_PFN;
>  #endif
> -- 
> 2.48.1
> 

-- 
Sincerely yours,
Mike.