diff options
Diffstat (limited to 'arch/arm/mm')
| -rw-r--r-- | arch/arm/mm/Kconfig | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index ade0e2222f5..3fefb43c67f 100644 --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -422,3 +422,11 @@ config HAS_TLS_REG assume directly accessing that register and always obtain the expected value only on ARMv7 and above. +config NEEDS_SYSCALL_FOR_CMPXCHG + bool + default y if SMP && (CPU_32v5 || CPU_32v4 || CPU_32v3) + help + SMP on a pre-ARMv6 processor? Well OK then. + Forget about fast user space cmpxchg support. + It is just not possible. + |