linux-kernel - Re: [PATCH linux-next] LoongArch: mm: Export symbol for invalid_pud

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Message-ID: <9f7931dd-3c0e-4bc2-988e-1fb3549e440e@infradead.org>
Date:   Sat, 7 Oct 2023 09:14:36 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Tianrui Zhao <zhaotianrui@...ngson.cn>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "open list : LOONGARCH" <loongarch@...ts.linux.dev>,
        KVM list <kvm@...r.kernel.org>, maobibo@...ngson.cn,
        Huacai Chen <chenhuacai@...nel.org>,
        Paolo Bonzini <pbonzini@...hat.com>
Subject: Re: [PATCH linux-next] LoongArch: mm: Export symbol for
 invalid_pud_table.



On 10/7/23 00:53, Tianrui Zhao wrote:
> Export symbol for invalid_pud_table, so it can be used
> by the files in other directories.
> 
> And this can resolve the problem caused in:
> https://lore.kernel.org/lkml/20230927030959.3629941-5-zhaotianrui@loongson.cn/
> ERROR: modpost: "invalid_pud_table" [arch/loongarch/kvm/kvm.ko] undefined!
> 
> Signed-off-by: Tianrui Zhao <zhaotianrui@...ngson.cn>

Reported-by: Randy Dunlap <rdunlap@...radead.org>
Acked-by: Randy Dunlap <rdunlap@...radead.org>
Tested-by: Randy Dunlap <rdunlap@...radead.org>

Thanks.

> ---
>  arch/loongarch/mm/init.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/loongarch/mm/init.c b/arch/loongarch/mm/init.c
> index f3fe8c06ba4d..ddf1330c924c 100644
> --- a/arch/loongarch/mm/init.c
> +++ b/arch/loongarch/mm/init.c
> @@ -240,6 +240,7 @@ pgd_t swapper_pg_dir[_PTRS_PER_PGD] __section(".bss..swapper_pg_dir");
>  pgd_t invalid_pg_dir[_PTRS_PER_PGD] __page_aligned_bss;
>  #ifndef __PAGETABLE_PUD_FOLDED
>  pud_t invalid_pud_table[PTRS_PER_PUD] __page_aligned_bss;
> +EXPORT_SYMBOL(invalid_pud_table);
>  #endif
>  #ifndef __PAGETABLE_PMD_FOLDED
>  pmd_t invalid_pmd_table[PTRS_PER_PMD] __page_aligned_bss;

-- 
~Randy