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| author | Jan Beulich <JBeulich@novell.com> | 2009-11-13 11:56:24 +0000 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-11-15 09:29:47 +0100 |
| commit | 14722485830fe6baba738b91d96f06fbd6cf7a18 (patch) | |
| tree | 97a8d0033ecc080e43afcc4d41e0cf9144d4dbe9 | |
| parent | c12a229bc5971534537a7d0e49e44f9f1f5d0336 (diff) | |
| download | op-kernel-dev-14722485830fe6baba738b91d96f06fbd6cf7a18.zip op-kernel-dev-14722485830fe6baba738b91d96f06fbd6cf7a18.tar.gz | |
x86-64: __copy_from_user_inatomic() adjustments
This v2.6.26 commit:
ad2fc2c: x86: fix copy_user on x86
rendered __copy_from_user_inatomic() identical to
copy_user_generic(), yet didn't make the former just call the
latter from an inline function.
Furthermore, this v2.6.19 commit:
b885808: [PATCH] Add proper sparse __user casts to __copy_to_user_inatomic
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: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: <v.mayatskih@gmail.com>
LKML-Reference: <4AFD5778020000780001F8F4@vpn.id2.novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | arch/x86/include/asm/uaccess_64.h | 7 | ||||
| -rw-r--r-- | arch/x86/kernel/x8664_ksyms_64.c | 1 | ||||
| -rw-r--r-- | arch/x86/lib/copy_user_64.S | 6 |
3 files changed, 5 insertions, 9 deletions
diff --git a/arch/x86/include/asm/uaccess_64.h b/arch/x86/include/asm/uaccess_64.h index ce6fec7..7adebac 100644 --- a/arch/x86/include/asm/uaccess_64.h +++ b/arch/x86/include/asm/uaccess_64.h @@ -193,8 +193,11 @@ __must_check long strlen_user(const char __user *str); __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) diff --git a/arch/x86/kernel/x8664_ksyms_64.c b/arch/x86/kernel/x8664_ksyms_64.c index a0cdd8c..cd54276 100644 --- a/arch/x86/kernel/x8664_ksyms_64.c +++ b/arch/x86/kernel/x8664_ksyms_64.c @@ -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); diff --git a/arch/x86/lib/copy_user_64.S b/arch/x86/lib/copy_user_64.S index 4be3c41..3936998 100644 --- a/arch/x86/lib/copy_user_64.S +++ b/arch/x86/lib/copy_user_64.S @@ -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) |
