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Commit d951ba21 authored by Max Filippov's avatar Max Filippov
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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: default avatarMax Filippov <jcmvbkbc@gmail.com>
parent d9eb3cb2

arch/xtensa/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -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