4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Russell King <rmk+kernel@xxxxxxxxxxxxxxx> Commit c58d237d0852a57fde9bc2c310972e8f4e3d155d upstream. Add a Kconfig symbol for CPUs which are vulnerable to the Spectre attacks. Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxx> Reviewed-by: Florian Fainelli <f.fainelli@xxxxxxxxx> Boot-tested-by: Tony Lindgren <tony@xxxxxxxxxxx> Reviewed-by: Tony Lindgren <tony@xxxxxxxxxxx> Acked-by: Marc Zyngier <marc.zyngier@xxxxxxx> Signed-off-by: David A. Long <dave.long@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/arm/mm/Kconfig | 4 ++++ 1 file changed, 4 insertions(+) --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -396,6 +396,7 @@ config CPU_V7 select CPU_CP15_MPU if !MMU select CPU_HAS_ASID if MMU select CPU_PABRT_V7 + select CPU_SPECTRE if MMU select CPU_TLB_V7 if MMU # ARMv7M @@ -800,6 +801,9 @@ config CPU_BPREDICT_DISABLE help Say Y here to disable branch prediction. If unsure, say N. +config CPU_SPECTRE + bool + config TLS_REG_EMUL bool select NEED_KUSER_HELPERS
