linux-kernel - Re: [PATCH v4 6/9] kasan/um: select ARCH_DEFER_KASAN and call kasan_init

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Message-ID: <60895f3d-abe2-4fc3-afc3-176a188f06d4@gmail.com>
Date: Tue, 5 Aug 2025 19:19:09 +0200
From: Andrey Ryabinin <ryabinin.a.a@...il.com>
To: Sabyrzhan Tasbolatov <snovitoll@...il.com>, hca@...ux.ibm.com,
 christophe.leroy@...roup.eu, andreyknvl@...il.com, agordeev@...ux.ibm.com,
 akpm@...ux-foundation.org, zhangqing@...ngson.cn, chenhuacai@...ngson.cn,
 trishalfonso@...gle.com, davidgow@...gle.com
Cc: glider@...gle.com, dvyukov@...gle.com, kasan-dev@...glegroups.com,
 linux-kernel@...r.kernel.org, loongarch@...ts.linux.dev,
 linuxppc-dev@...ts.ozlabs.org, linux-riscv@...ts.infradead.org,
 linux-s390@...r.kernel.org, linux-um@...ts.infradead.org, linux-mm@...ck.org
Subject: Re: [PATCH v4 6/9] kasan/um: select ARCH_DEFER_KASAN and call
 kasan_init_generic



On 8/5/25 4:26 PM, Sabyrzhan Tasbolatov wrote:
> 
> diff --git a/arch/um/Kconfig b/arch/um/Kconfig
> index 9083bfdb773..8d14c8fc2cd 100644
> --- a/arch/um/Kconfig
> +++ b/arch/um/Kconfig
> @@ -5,6 +5,7 @@ menu "UML-specific options"
>  config UML
>  	bool
>  	default y
> +	select ARCH_DEFER_KASAN

select ARCH_DEFER_KASAN if STATIC_LINK

>  	select ARCH_WANTS_DYNAMIC_TASK_STRUCT
>  	select ARCH_HAS_CACHE_LINE_SIZE
>  	select ARCH_HAS_CPU_FINALIZE_INIT
> diff --git a/arch/um/include/asm/kasan.h b/arch/um/include/asm/kasan.h
> index f97bb1f7b85..81bcdc0f962 100644
> --- a/arch/um/include/asm/kasan.h
> +++ b/arch/um/include/asm/kasan.h
> @@ -24,11 +24,6 @@
>  
>  #ifdef CONFIG_KASAN
>  void kasan_init(void);
> -extern int kasan_um_is_ready;
> -
> -#ifdef CONFIG_STATIC_LINK
> -#define kasan_arch_is_ready() (kasan_um_is_ready)
> -#endif
>  #else
>  static inline void kasan_init(void) { }
>  #endif /* CONFIG_KASAN */