linux-kernel - Re: [PATCH] powerpc/mm: export symbols for lazy_mmu

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Message-Id: <20251217093036.3231f9613ac8f9cf3943357f@linux-foundation.org>
Date: Wed, 17 Dec 2025 09:30:36 -0800
From: Andrew Morton <akpm@...ux-foundation.org>
To: Ritesh Harjani (IBM) <ritesh.list@...il.com>
Cc: Kevin Brodsky <kevin.brodsky@....com>, linux-kernel@...r.kernel.org,
 Ryan Roberts <ryan.roberts@....com>, linux-mm@...ck.org,
 linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH] powerpc/mm: export symbols for lazy_mmu_mode KUnit
 tests

On Wed, 17 Dec 2025 22:15:16 +0530 Ritesh Harjani (IBM) <ritesh.list@...il.com> wrote:

> ../arch/powerpc/mm/book3s64/hash_tlb.c:158:1: error: type defaults to ‘int’ in declaration of ‘EXPORT_SYMBOL_IF_KUNIT’ [-Werror=implicit-int]
> ../arch/powerpc/mm/book3s64/hash_tlb.c:158:1: error: parameter names (without types) in function declaration [-Werror]
>   AR      init/built-in.a
> cc1: all warnings being treated as errors
> make[6]: *** [../scripts/Makefile.build:287: arch/powerpc/mm/book3s64/hash_tlb.o] Error 1
> make[5]: *** [../scripts/Makefile.build:556: arch/powerpc/mm/book3s64] Error 2
> 
> 
> IMO, we will need the following header in hash_tlb.c
> 
> +#include <kunit/visibility.h>

Yeah, I already added Ritesh's patch which had this include, so I
think we're all good now.