Messages in this thread Patch in this message | | | Date | Fri, 13 Nov 2009 11:56:24 +0000 | From | "Jan Beulich" <> | Subject | [PATCH] x86-64: __copy_from_user_inatomic() adjustments |
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Commit ad2fc2cd925300b8127cf682f5a1c7511ae9dd27 rendered __copy_from_user_inatomic() identical to copy_user_generic(), yet didn't make the former just call the latter from an inline function.
Commit b885808e185a4ec2dfe16c84434f79e95f0245b0 converted the return type of __copy_to_user_inatomic() from unsigned long to int, but didn't do the same to __copy_from_user_inatomic()
Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Vitaly Mayatskikh <v.mayatskih@gmail.com>
--- arch/x86/include/asm/uaccess_64.h | 7 +++++-- arch/x86/kernel/x8664_ksyms_64.c | 1 - arch/x86/lib/copy_user_64.S | 6 ------ 3 files changed, 5 insertions(+), 9 deletions(-)
--- linux-2.6.32-rc7/arch/x86/include/asm/uaccess_64.h 2009-09-10 00:13:59.000000000 +0200 +++ 2.6.32-rc7-x86_64-copy_from_user_inatomic/arch/x86/include/asm/uaccess_64.h 2009-11-10 13:54:10.000000000 +0100 @@ -176,8 +176,11 @@ __must_check long strlen_user(const char __must_check unsigned long clear_user(void __user *mem, unsigned long len); __must_check unsigned long __clear_user(void __user *mem, unsigned long len); -__must_check long __copy_from_user_inatomic(void *dst, const void __user *src, - unsigned size); +static __must_check __always_inline int +__copy_from_user_inatomic(void *dst, const void __user *src, unsigned size) +{ + return copy_user_generic(dst, (__force const void *)src, size); +} static __must_check __always_inline int __copy_to_user_inatomic(void __user *dst, const void *src, unsigned size) --- linux-2.6.32-rc7/arch/x86/kernel/x8664_ksyms_64.c 2009-06-10 05:05:27.000000000 +0200 +++ 2.6.32-rc7-x86_64-copy_from_user_inatomic/arch/x86/kernel/x8664_ksyms_64.c 2009-11-10 12:47:22.000000000 +0100 @@ -32,7 +32,6 @@ EXPORT_SYMBOL(copy_user_generic); EXPORT_SYMBOL(__copy_user_nocache); EXPORT_SYMBOL(copy_from_user); EXPORT_SYMBOL(copy_to_user); -EXPORT_SYMBOL(__copy_from_user_inatomic); EXPORT_SYMBOL(copy_page); EXPORT_SYMBOL(clear_page); --- linux-2.6.32-rc7/arch/x86/lib/copy_user_64.S 2009-09-10 00:13:59.000000000 +0200 +++ 2.6.32-rc7-x86_64-copy_from_user_inatomic/arch/x86/lib/copy_user_64.S 2009-11-10 12:43:14.000000000 +0100 @@ -96,12 +96,6 @@ ENTRY(copy_user_generic) CFI_ENDPROC ENDPROC(copy_user_generic) -ENTRY(__copy_from_user_inatomic) - CFI_STARTPROC - ALTERNATIVE_JUMP X86_FEATURE_REP_GOOD,copy_user_generic_unrolled,copy_user_generic_string - CFI_ENDPROC -ENDPROC(__copy_from_user_inatomic) - .section .fixup,"ax" /* must zero dest */ ENTRY(bad_from_user)
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