Re: [PATCHv2 2/5] arm64/efi: move to generic {__,}efi_call_virt

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On Thu, Apr 21, 2016 at 12:35:26PM +0100, Mark Rutland wrote:
> Now there's a common template for {__,}efi_call_virt, remove the
> duplicate logic from the arm64 efi code.
> 
> Signed-off-by: Mark Rutland <mark.rutland@xxxxxxx>
> Cc: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
> Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
> Cc: Leif Lindholm <leif.lindholm@xxxxxxxxxx>
> Cc: Matt Fleming <matt@xxxxxxxxxxxxxxxxxxx>
> Cc: Will Deacon <will.deacon@xxxxxxx>
> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> Cc: linux-efi@xxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> ---
>  arch/arm64/include/asm/efi.h | 21 +++++++--------------
>  1 file changed, 7 insertions(+), 14 deletions(-)
> 
> diff --git a/arch/arm64/include/asm/efi.h b/arch/arm64/include/asm/efi.h
> index 8e88a69..f4f71224 100644
> --- a/arch/arm64/include/asm/efi.h
> +++ b/arch/arm64/include/asm/efi.h
> @@ -14,28 +14,21 @@ extern void efi_init(void);
>  
>  int efi_create_mapping(struct mm_struct *mm, efi_memory_desc_t *md);
>  
> -#define efi_call_virt(f, ...)						\
> +#define arch_efi_call_virt_setup()					\
>  ({									\
> -	efi_##f##_t *__f;						\
> -	efi_status_t __s;						\
> -									\
>  	kernel_neon_begin();						\
>  	efi_virtmap_load();						\
> -	__f = efi.systab->runtime->f;					\
> -	__s = __f(__VA_ARGS__);						\
> -	efi_virtmap_unload();						\
> -	kernel_neon_end();						\
> -	__s;								\
>  })
>  
> -#define __efi_call_virt(f, ...)						\
> +#define arch_efi_call_virt(f, args...)					\
>  ({									\
>  	efi_##f##_t *__f;						\
> -									\
> -	kernel_neon_begin();						\
> -	efi_virtmap_load();						\
>  	__f = efi.systab->runtime->f;					\
> -	__f(__VA_ARGS__);						\
> +	__f(args);							\

Any reason to change this to a named argument? This patch is hard enough
to review as it is, given the way the diff has been generated!

Either way:

Acked-by: Will Deacon <will.deacon@xxxxxxx>

Will
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