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From:   Huacai Chen <chenhuacai@kernel.org>
Date:   Sat, 7 Oct 2023 17:48:52 +0800
Message-ID: <CAAhV-H50XxWH+YMT8LHS+sCVRyHWyHvRbL0UvW1f3cWWgpQi2g@mail.gmail.com>
Subject: Re: [PATCH linux-next] LoongArch: mm: Export symbol for invalid_pud_table.
To:     Tianrui Zhao <zhaotianrui@loongson.cn>
Cc:     Randy Dunlap <rdunlap@infradead.org>,
        Stephen Rothwell <sfr@canb.auug.org.au>,
        Linux Next Mailing List <linux-next@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        "open list : LOONGARCH" <loongarch@lists.linux.dev>,
        KVM list <kvm@vger.kernel.org>, maobibo@loongson.cn,
        Paolo Bonzini <pbonzini@redhat.com>
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Queued for loongarch-next (though I prepared a similar patch), thanks.

Huacai

On Sat, Oct 7, 2023 at 3:53=E2=80=AFPM Tianrui Zhao <zhaotianrui@loongson.c=
n> 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@loongso=
n.cn/
> ERROR: modpost: "invalid_pud_table" [arch/loongarch/kvm/kvm.ko] undefined=
!
>
> Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn>
> ---
>  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;
> --
> 2.39.1
>