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| author | Helge Deller <deller@gmx.de> | 2014-01-31 22:19:52 +0100 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2014-02-02 21:00:13 +0100 |
| commit | 9dabf60dc4abe6e06bebcc2ee46b4d76ec8741f2 (patch) | |
| tree | 93b98d806b1941b91ac3de04b7bd730103d3fab8 /arch/parisc/include/asm/thread_info.h | |
| parent | f5a408d53edef3af07ac7697b8bc54a755628450 (diff) | |
| download | op-kernel-dev-9dabf60dc4abe6e06bebcc2ee46b4d76ec8741f2.zip op-kernel-dev-9dabf60dc4abe6e06bebcc2ee46b4d76ec8741f2.tar.gz | |
parisc: add flexible mmap memory layout support
Add support for the flexible mmap memory layout (as described in
http://lwn.net/Articles/91829). This is especially very interesting on
parisc since we currently only support 32bit userspace (even with a
64bit Linux kernel).
Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'arch/parisc/include/asm/thread_info.h')
| -rw-r--r-- | arch/parisc/include/asm/thread_info.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/parisc/include/asm/thread_info.h b/arch/parisc/include/asm/thread_info.h index d5f97ea..4b9b10c 100644 --- a/arch/parisc/include/asm/thread_info.h +++ b/arch/parisc/include/asm/thread_info.h @@ -76,6 +76,16 @@ struct thread_info { #define _TIF_SYSCALL_TRACE_MASK (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP | \ _TIF_BLOCKSTEP | _TIF_SYSCALL_AUDIT) +#ifdef CONFIG_64BIT +# ifdef CONFIG_COMPAT +# define is_32bit_task() (test_thread_flag(TIF_32BIT)) +# else +# define is_32bit_task() (0) +# endif +#else +# define is_32bit_task() (1) +#endif + #endif /* __KERNEL__ */ #endif /* _ASM_PARISC_THREAD_INFO_H */ |
