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| author | Max Filippov <jcmvbkbc@gmail.com> | 2015-09-30 14:17:35 +0200 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2015-11-02 16:03:07 +0100 |
| commit | d951ba21b95938c24a28a25295c44719d3b51ee2 (patch) | |
| tree | cc02a0697c62ff3dc2b30aa143e11690734b3038 /arch/xtensa | |
| parent | xtensa: nommu: fix default memory start address (diff) | |
| download | linux-d951ba21b95938c24a28a25295c44719d3b51ee2.tar.xz linux-d951ba21b95938c24a28a25295c44719d3b51ee2.zip | |
xtensa: nommu: select HAVE_FUTEX_CMPXCHG
Not having HAVE_FUTEX_CMPXCHG makes futex_detect_cmpxchg probe
cmpxchg_futex_value_locked with NULL address. It's not guaranteed to
fault without MMU, instead it locks up on Xtensa when there's no RAM at
address 0.
Select HAVE_FUTEX_CMPXCHG in noMMU Xtensa configurations.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'arch/xtensa')
| -rw-r--r-- | arch/xtensa/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index 366a98139909..3d35867c61f1 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -17,6 +17,7 @@ config XTENSA select HAVE_DMA_API_DEBUG select HAVE_DMA_ATTRS select HAVE_FUNCTION_TRACER + select HAVE_FUTEX_CMPXCHG if !MMU select HAVE_IRQ_TIME_ACCOUNTING select HAVE_OPROFILE select HAVE_PERF_EVENTS |