[PATCH v2 4/4] MIPS: Select ARCH_HAVE_NMI_SAFE_CMPXCHG when possible

[Jiaxun Yang <jiaxun.yang@flygoat.com>]

LLSC based CMPXCHG is safe for NMI.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
 arch/mips/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index e83036580a47..1bb274c50636 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -17,6 +17,7 @@ config MIPS
 	select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
 	select ARCH_HAS_UBSAN
 	select ARCH_HAS_GCOV_PROFILE_ALL
+	select ARCH_HAVE_NMI_SAFE_CMPXCHG if CPU_HAS_LLSC
 	select ARCH_KEEP_MEMBLOCK
 	select ARCH_USE_BUILTIN_BSWAP
 	select ARCH_USE_CMPXCHG_LOCKREF if 64BIT

-- 
2.43.0