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

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Message-ID: <20200824173502.GA1161855@kroah.com>
Date:   Mon, 24 Aug 2020 19:35:02 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Michael Kelley <mikelley@...rosoft.com>
Cc:     will@...nel.org, ardb@...nel.org, arnd@...db.de,
        catalin.marinas@....com, mark.rutland@....com, maz@...nel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-hyperv@...r.kernel.org, linux-efi@...r.kernel.org,
        linux-arch@...r.kernel.org, wei.liu@...nel.org,
        vkuznets@...hat.com, kys@...rosoft.com, sunilmut@...rosoft.com,
        boqun.feng@...il.com
Subject: Re: [PATCH v7 09/10] arm64: efi: Export screen_info

On Mon, Aug 24, 2020 at 09:46:22AM -0700, Michael Kelley 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>
> ---
>  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);

EXPORT_SYMBOL_GPL()?

I have to ask :)

thanks,

greg k-h