Messages in this thread | | | Date | Sun, 25 Mar 2012 12:34:58 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH v15 04/13] arch/x86: add syscall_get_arch to syscall.h |
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On 03/14/2012 08:11 PM, Will Drewry wrote: > > +static inline int syscall_get_arch(struct task_struct *task, > + struct pt_regs *regs) > +{ > +#ifdef CONFIG_IA32_EMULATION > + /* > + * TS_COMPAT is set for 32-bit syscall entries and then > + * remains set until we return to user mode. > + * > + * TIF_IA32 tasks should always have TS_COMPAT set at > + * system call time. > + */ > + if (task_thread_info(task)->status & TS_COMPAT) > + return AUDIT_ARCH_I386; > +#endif > + return AUDIT_ARCH_X86_64; > +} > #endif /* CONFIG_X86_32 */ > > #endif /* _ASM_X86_SYSCALL_H */
Just one FYI on this: after the x32 changes are upstream this can be implemented in terms of is_ia32_task().
-hpa
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