linux-kernel - Re: [PATCH v7 09/10] arm64: efi: Export screen

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Message-ID: <CAMj1kXHd2vs+O6N6FeNeJeGPh=RTs++3rGms7tCd0Oy7qt3faQ@mail.gmail.com>
Date:   Mon, 24 Aug 2020 19:21:12 +0200
From:   Ard Biesheuvel <ardb@...nel.org>
To:     Michael Kelley <mikelley@...rosoft.com>
Cc:     Will Deacon <will@...nel.org>, Arnd Bergmann <arnd@...db.de>,
        Catalin Marinas <catalin.marinas@....com>,
        Mark Rutland <mark.rutland@....com>,
        Marc Zyngier <maz@...nel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-hyperv@...r.kernel.org,
        linux-efi <linux-efi@...r.kernel.org>,
        linux-arch <linux-arch@...r.kernel.org>, wei.liu@...nel.org,
        vkuznets <vkuznets@...hat.com>,
        KY Srinivasan <kys@...rosoft.com>,
        Sunil Muthuswamy <sunilmut@...rosoft.com>,
        Boqun Feng <boqun.feng@...il.com>
Subject: Re: [PATCH v7 09/10] arm64: efi: Export screen_info

On Mon, 24 Aug 2020 at 18:48, Michael Kelley <mikelley@...rosoft.com> wrote:
>
> The Hyper-V frame buffer driver may be built as a module, and
> it needs access to screen_info. So export screen_info.
>
> Signed-off-by: Michael Kelley <mikelley@...rosoft.com>

Acked-by: Ard Biesheuvel <ardb@...nel.org>

> ---
>  arch/arm64/kernel/efi.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c
> index d0cf596..8ff557a 100644
> --- a/arch/arm64/kernel/efi.c
> +++ b/arch/arm64/kernel/efi.c
> @@ -55,6 +55,7 @@ static __init pteval_t create_mapping_protection(efi_memory_desc_t *md)
>
>  /* we will fill this structure from the stub, so don't put it in .bss */
>  struct screen_info screen_info __section(.data);
> +EXPORT_SYMBOL(screen_info);
>
>  int __init efi_create_mapping(struct mm_struct *mm, efi_memory_desc_t *md)
>  {
> --
> 1.8.3.1
>