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| author |   Andi Kleen <ak@suse.de> | 2006-01-11 22:44:06 +0100 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-11 19:04:53 -0800 |
| commit | bf2fcc6fdfe4f4e92bb74f062c0a1be189f3a561 (patch) | |
| tree | 0bcc33f681c7e8ce6596c9323d4a1026ede84994 /include/asm-x86_64 | |
| parent | [PATCH] x86_64: Implement compat code for sg driver SG_GET_REQUEST_TABLE ioctl (diff) | |
| download | linux-dev-bf2fcc6fdfe4f4e92bb74f062c0a1be189f3a561.tar.xz linux-dev-bf2fcc6fdfe4f4e92bb74f062c0a1be189f3a561.zip | |
[PATCH] x86_64: Implement is_compat_task the right way
By setting a flag during a 32bit system call only
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-x86_64')
| -rw-r--r-- | include/asm-x86_64/compat.h | 5 | ||||
| -rw-r--r-- | include/asm-x86_64/thread_info.h | 1 |
2 files changed, 6 insertions, 0 deletions
diff --git a/include/asm-x86_64/compat.h b/include/asm-x86_64/compat.h index f0155c38f639..3863a7da372b 100644 --- a/include/asm-x86_64/compat.h +++ b/include/asm-x86_64/compat.h @@ -202,4 +202,9 @@ static __inline__ void __user *compat_alloc_user_space(long len) return (void __user *)regs->rsp - len; } +static inline int is_compat_task(void) +{ + return current_thread_info()->status & TS_COMPAT; +} + #endif /* _ASM_X86_64_COMPAT_H */ diff --git a/include/asm-x86_64/thread_info.h b/include/asm-x86_64/thread_info.h index 08eb6e4f3737..eb7c5fda1870 100644 --- a/include/asm-x86_64/thread_info.h +++ b/include/asm-x86_64/thread_info.h @@ -138,6 +138,7 @@ static inline struct thread_info *stack_thread_info(void) * have to worry about atomic accesses. */ #define TS_USEDFPU 0x0001 /* FPU was used by this task this quantum (SMP) */ +#define TS_COMPAT 0x0002 /* 32bit syscall active */ #endif /* __KERNEL__ */ |