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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-09-25 00:22:33 +0400 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-09-25 00:22:33 +0400 |
| commit | baea7b946f00a291b166ccae7fcfed6c01530cc6 (patch) | |
| tree | 4aa275fbdbec9c7b9b4629e8bee2bbecd3c6a6af /arch/x86/include/asm/syscall.h | |
| parent | ae19ffbadc1b2100285a5b5b3d0a4e0a11390904 (diff) | |
| parent | 94e0fb086fc5663c38bbc0fe86d698be8314f82f (diff) | |
| download | linux-baea7b946f00a291b166ccae7fcfed6c01530cc6.tar.xz | |
Merge branch 'origin' into for-linus
Conflicts:
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Diffstat (limited to 'arch/x86/include/asm/syscall.h')
| -rw-r--r-- | arch/x86/include/asm/syscall.h | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/arch/x86/include/asm/syscall.h b/arch/x86/include/asm/syscall.h index d82f39bb7905..8d33bc5462d1 100644 --- a/arch/x86/include/asm/syscall.h +++ b/arch/x86/include/asm/syscall.h @@ -1,7 +1,7 @@ /* * Access to user system call parameters and results * - * Copyright (C) 2008 Red Hat, Inc. All rights reserved. + * Copyright (C) 2008-2009 Red Hat, Inc. All rights reserved. * * This copyrighted material is made available to anyone wishing to use, * modify, copy, or redistribute it subject to the terms and conditions @@ -16,13 +16,13 @@ #include <linux/sched.h> #include <linux/err.h> -static inline long syscall_get_nr(struct task_struct *task, - struct pt_regs *regs) +/* + * Only the low 32 bits of orig_ax are meaningful, so we return int. + * This importantly ignores the high bits on 64-bit, so comparisons + * sign-extend the low 32 bits. + */ +static inline int syscall_get_nr(struct task_struct *task, struct pt_regs *regs) { - /* - * We always sign-extend a -1 value being set here, - * so this is always either -1L or a syscall number. - */ return regs->orig_ax; } |