linux-kernel - Re: [PATCH 03/15] binfmt_flat: provide a default version of flat_get_relocate

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Date:   Tue, 11 Jun 2019 10:46:18 +0100
From:   Vladimir Murzin <vladimir.murzin@....com>
To:     Christoph Hellwig <hch@....de>, Greg Ungerer <gerg@...ux-m68k.org>
Cc:     uclinux-h8-devel@...ts.sourceforge.jp,
        linux-xtensa@...ux-xtensa.org, Michal Simek <monstr@...str.eu>,
        linux-c6x-dev@...ux-c6x.org, linux-sh@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-m68k@...ts.linux-m68k.org,
        linux-riscv@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 03/15] binfmt_flat: provide a default version of
 flat_get_relocate_addr

On 6/10/19 10:20 PM, Christoph Hellwig wrote:
> This way only the two architectures that do masking need to provide
> the helper.
> 
> Signed-off-by: Christoph Hellwig <hch@....de>
> ---
>  arch/arm/include/asm/flat.h    | 2 --
>  arch/c6x/include/asm/flat.h    | 1 -
>  arch/m68k/include/asm/flat.h   | 1 -
>  arch/sh/include/asm/flat.h     | 1 -
>  arch/xtensa/include/asm/flat.h | 1 -
>  fs/binfmt_flat.c               | 4 ++++
>  6 files changed, 4 insertions(+), 6 deletions(-)


For ARM bits:

Tested-by: Vladimir Murzin <vladimir.murzin@....com>
Reviewed-by: Vladimir Murzin <vladimir.murzin@....com>


> 
> diff --git a/arch/arm/include/asm/flat.h b/arch/arm/include/asm/flat.h
> index 576241d74704..a185fe023b60 100644
> --- a/arch/arm/include/asm/flat.h
> +++ b/arch/arm/include/asm/flat.h
> @@ -30,6 +30,4 @@ static inline int flat_put_addr_at_rp(u32 __user *rp, u32 addr, u32 rel)
>  #endif
>  }
>  
> -#define	flat_get_relocate_addr(rel)		(rel)
> -
>  #endif /* __ARM_FLAT_H__ */
> diff --git a/arch/c6x/include/asm/flat.h b/arch/c6x/include/asm/flat.h
> index ac87368efad1..c4d703b454c6 100644
> --- a/arch/c6x/include/asm/flat.h
> +++ b/arch/c6x/include/asm/flat.h
> @@ -17,6 +17,5 @@ static inline int flat_put_addr_at_rp(u32 __user *rp, u32 addr, u32 rel)
>  	put_unaligned(addr, (__force u32 *)rp);
>  	return 0;
>  }
> -#define flat_get_relocate_addr(rel)			(rel)
>  
>  #endif /* __ASM_C6X_FLAT_H */
> diff --git a/arch/m68k/include/asm/flat.h b/arch/m68k/include/asm/flat.h
> index 955617bb937b..217fa89c8e34 100644
> --- a/arch/m68k/include/asm/flat.h
> +++ b/arch/m68k/include/asm/flat.h
> @@ -28,7 +28,6 @@ static inline int flat_put_addr_at_rp(u32 __user *rp, u32 addr, u32 rel)
>  	return put_user(addr, rp);
>  #endif
>  }
> -#define	flat_get_relocate_addr(rel)		(rel)
>  
>  #define FLAT_PLAT_INIT(regs) \
>  	do { \
> diff --git a/arch/sh/include/asm/flat.h b/arch/sh/include/asm/flat.h
> index 6f3b18679a98..0d520b4cc5ea 100644
> --- a/arch/sh/include/asm/flat.h
> +++ b/arch/sh/include/asm/flat.h
> @@ -24,7 +24,6 @@ static inline int flat_put_addr_at_rp(u32 __user *rp, u32 addr, u32 rel)
>  	put_unaligned(addr, (__force u32 *)rp);
>  	return 0;
>  }
> -#define	flat_get_relocate_addr(rel)		(rel)
>  
>  #define FLAT_PLAT_INIT(_r) \
>    do { _r->regs[0]=0; _r->regs[1]=0; _r->regs[2]=0; _r->regs[3]=0; \
> diff --git a/arch/xtensa/include/asm/flat.h b/arch/xtensa/include/asm/flat.h
> index b1bc0d9a8d4e..a1d88aa3ef8a 100644
> --- a/arch/xtensa/include/asm/flat.h
> +++ b/arch/xtensa/include/asm/flat.h
> @@ -17,6 +17,5 @@ static inline int flat_put_addr_at_rp(u32 __user *rp, u32 addr, u32 rel)
>  	put_unaligned(addr, (__force u32 *)rp);
>  	return 0;
>  }
> -#define flat_get_relocate_addr(rel)			(rel)
>  
>  #endif /* __ASM_XTENSA_FLAT_H */
> diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c
> index a4c0b245ab1f..c0e4535dc1ec 100644
> --- a/fs/binfmt_flat.c
> +++ b/fs/binfmt_flat.c
> @@ -43,6 +43,10 @@
>  #include <asm/cacheflush.h>
>  #include <asm/page.h>
>  
> +#ifndef flat_get_relocate_addr
> +#define flat_get_relocate_addr(rel)	(rel)
> +#endif
> +
>  /****************************************************************************/
>  
>  /*
>