linux-kernel - Re: [PATCH v6 14/18] x86: Minimal SLAB alignment

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Message-ID: <CAG_fn=W033hGM7_jnj0irwW0gc6McLw2nbhfZROWfieqKTxVdQ@mail.gmail.com>
Date: Mon, 10 Nov 2025 18:48:35 +0100
From: Alexander Potapenko <glider@...gle.com>
To: Maciej Wieczor-Retman <m.wieczorretman@...me>
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Subject: Re: [PATCH v6 14/18] x86: Minimal SLAB alignment

> diff --git a/arch/x86/include/asm/cache.h b/arch/x86/include/asm/cache.h
> index 69404eae9983..3232583b5487 100644
> --- a/arch/x86/include/asm/cache.h
> +++ b/arch/x86/include/asm/cache.h
> @@ -21,4 +21,8 @@
>  #endif
>  #endif
>
> +#ifdef CONFIG_KASAN_SW_TAGS
> +#define ARCH_SLAB_MINALIGN (1ULL << KASAN_SHADOW_SCALE_SHIFT)

I don't think linux/linkage.h (the only header included here) defines
KASAN_SHADOW_SCALE_SHIFT, does it?