Re: [tip:x86/asmlinkage] lto: Make asmlinkage __visible

From: Borislav Petkov
Date: Fri Feb 14 2014 - 04:11:31 EST


On Thu, Feb 13, 2014 at 08:30:37PM -0800, tip-bot for Andi Kleen wrote:
> Commit-ID: 128ea04a9885af9629059e631ddf0cab4815b589
> Gitweb: http://git.kernel.org/tip/128ea04a9885af9629059e631ddf0cab4815b589
> Author: Andi Kleen <ak@xxxxxxxxxxxxxxx>
> AuthorDate: Sat, 8 Feb 2014 09:01:07 +0100
> Committer: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
> CommitDate: Thu, 13 Feb 2014 20:21:59 -0800
>
> lto: Make asmlinkage __visible
>
> Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
> Link: http://lkml.kernel.org/r/1391846481-31491-3-git-send-email-ak@xxxxxxxxxxxxxxx
> Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
> ---
> include/linux/linkage.h | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/include/linux/linkage.h b/include/linux/linkage.h
> index a6a42dd..34a513a 100644
> --- a/include/linux/linkage.h
> +++ b/include/linux/linkage.h
> @@ -12,9 +12,9 @@
> #endif
>
> #ifdef __cplusplus
> -#define CPP_ASMLINKAGE extern "C"
> +#define CPP_ASMLINKAGE extern "C" __visible
> #else
> -#define CPP_ASMLINKAGE
> +#define CPP_ASMLINKAGE __visible
> #endif
>
> #ifndef asmlinkage
> --

arch/x86/crypto/sha256_ssse3_glue.c:56:1: warning: âexternally_visibleâ attribute have effect only on public objects [-Wattributes]
static asmlinkage void (*sha256_transform_asm)(const char *, u32 *, u64);
^
arch/x86/crypto/sha512_ssse3_glue.c:55:1: warning: âexternally_visibleâ attribute have effect only on public objects [-Wattributes]
static asmlinkage void (*sha512_transform_asm)(const char *, u64 *, u64);


I guess it is trying to tell me that static function pointers cannot be
__visible:

static asmlinkage void (*sha256_transform_asm)(const char *, u32 *, u64);

and

static asmlinkage void (*sha512_transform_asm)(const char *, u64 *, u64);

--
Regards/Gruss,
Boris.

Sent from a fat crate under my desk. Formatting is fine.
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