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Message-ID: <ccb6cf72-70b1-e17a-772b-3e107b8cc5a9@arm.com>
Date: Tue, 11 Jun 2019 10:47:45 +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 04/15] binfmt_flat: remove flat_old_ram_flag
On 6/10/19 10:20 PM, Christoph Hellwig wrote:
> Instead add a Kconfig variable that only h8300 selects.
>
> Signed-off-by: Christoph Hellwig <hch@....de>
> ---
> arch/arm/include/asm/flat.h | 1 -
> arch/c6x/include/asm/flat.h | 1 -
> arch/h8300/Kconfig | 1 +
> arch/h8300/include/asm/flat.h | 1 -
> arch/m68k/include/asm/flat.h | 1 -
> arch/microblaze/include/asm/flat.h | 1 -
> arch/sh/include/asm/flat.h | 1 -
> arch/xtensa/include/asm/flat.h | 1 -
> fs/Kconfig.binfmt | 3 +++
> fs/binfmt_flat.c | 3 ++-
> 10 files changed, 6 insertions(+), 8 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 a185fe023b60..acf162111ee2 100644
> --- a/arch/arm/include/asm/flat.h
> +++ b/arch/arm/include/asm/flat.h
> @@ -9,7 +9,6 @@
> #include <linux/uaccess.h>
>
> #define flat_argvp_envp_on_stack() 1
> -#define flat_old_ram_flag(flags) (flags)
>
> static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags,
> u32 *addr, u32 *persistent)
> diff --git a/arch/c6x/include/asm/flat.h b/arch/c6x/include/asm/flat.h
> index c4d703b454c6..353e4d06e8c0 100644
> --- a/arch/c6x/include/asm/flat.h
> +++ b/arch/c6x/include/asm/flat.h
> @@ -5,7 +5,6 @@
> #include <asm/unaligned.h>
>
> #define flat_argvp_envp_on_stack() 0
> -#define flat_old_ram_flag(flags) (flags)
> static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags,
> u32 *addr, u32 *persistent)
> {
> diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig
> index ecfc4b4b6373..d30e8727b02d 100644
> --- a/arch/h8300/Kconfig
> +++ b/arch/h8300/Kconfig
> @@ -2,6 +2,7 @@
> config H8300
> def_bool y
> select ARCH_32BIT_OFF_T
> + select BINFMT_FLAT_OLD_ALWAYS_RAM
> select GENERIC_ATOMIC64
> select HAVE_UID16
> select VIRT_TO_BUS
> diff --git a/arch/h8300/include/asm/flat.h b/arch/h8300/include/asm/flat.h
> index 7ef7eefded3d..14cc928d5478 100644
> --- a/arch/h8300/include/asm/flat.h
> +++ b/arch/h8300/include/asm/flat.h
> @@ -9,7 +9,6 @@
> #include <asm/unaligned.h>
>
> #define flat_argvp_envp_on_stack() 1
> -#define flat_old_ram_flag(flags) 1
>
> /*
> * on the H8 a couple of the relocations have an instruction in the
> diff --git a/arch/m68k/include/asm/flat.h b/arch/m68k/include/asm/flat.h
> index 217fa89c8e34..7b1fb5c2809e 100644
> --- a/arch/m68k/include/asm/flat.h
> +++ b/arch/m68k/include/asm/flat.h
> @@ -9,7 +9,6 @@
> #include <linux/uaccess.h>
>
> #define flat_argvp_envp_on_stack() 1
> -#define flat_old_ram_flag(flags) (flags)
> static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags,
> u32 *addr, u32 *persistent)
> {
> diff --git a/arch/microblaze/include/asm/flat.h b/arch/microblaze/include/asm/flat.h
> index 846084fa7f04..1cd8d7f4cf12 100644
> --- a/arch/microblaze/include/asm/flat.h
> +++ b/arch/microblaze/include/asm/flat.h
> @@ -14,7 +14,6 @@
> #include <asm/unaligned.h>
>
> #define flat_argvp_envp_on_stack() 0
> -#define flat_old_ram_flag(flags) (flags)
>
> /*
> * Microblaze works a little differently from other arches, because
> diff --git a/arch/sh/include/asm/flat.h b/arch/sh/include/asm/flat.h
> index 0d520b4cc5ea..015678d7b771 100644
> --- a/arch/sh/include/asm/flat.h
> +++ b/arch/sh/include/asm/flat.h
> @@ -12,7 +12,6 @@
> #include <asm/unaligned.h>
>
> #define flat_argvp_envp_on_stack() 0
> -#define flat_old_ram_flag(flags) (flags)
> static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags,
> u32 *addr, u32 *persistent)
> {
> diff --git a/arch/xtensa/include/asm/flat.h b/arch/xtensa/include/asm/flat.h
> index a1d88aa3ef8a..b215c1e66958 100644
> --- a/arch/xtensa/include/asm/flat.h
> +++ b/arch/xtensa/include/asm/flat.h
> @@ -5,7 +5,6 @@
> #include <asm/unaligned.h>
>
> #define flat_argvp_envp_on_stack() 0
> -#define flat_old_ram_flag(flags) (flags)
> static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags,
> u32 *addr, u32 *persistent)
> {
> diff --git a/fs/Kconfig.binfmt b/fs/Kconfig.binfmt
> index f87ddd1b6d72..5658e12ad944 100644
> --- a/fs/Kconfig.binfmt
> +++ b/fs/Kconfig.binfmt
> @@ -97,6 +97,9 @@ config BINFMT_FLAT
> help
> Support uClinux FLAT format binaries.
>
> +config BINFMT_FLAT_OLD_ALWAYS_RAM
> + bool
> +
> config BINFMT_ZFLAT
> bool "Enable ZFLAT support"
> depends on BINFMT_FLAT
> diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c
> index c0e4535dc1ec..18d82fd5f57c 100644
> --- a/fs/binfmt_flat.c
> +++ b/fs/binfmt_flat.c
> @@ -488,7 +488,8 @@ static int load_flat_file(struct linux_binprm *bprm,
> * fix up the flags for the older format, there were all kinds
> * of endian hacks, this only works for the simple cases
> */
> - if (rev == OLD_FLAT_VERSION && flat_old_ram_flag(flags))
> + if (IS_ENABLED(CONFIG_BINFMT_FLAT_OLD_ALWAYS_RAM) &&
> + rev == OLD_FLAT_VERSION)
> flags = FLAT_FLAG_RAM;
>
> #ifndef CONFIG_BINFMT_ZFLAT
>
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