4.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Russell King <rmk+ker...@armlinux.org.uk>
Commit c58d237d0852a57fde9bc2c310972e8f4e3d155d upstream.
Add a Kconfig symbol for CPUs which are vulnerable to the Spectre
attacks.
Signed-off-by: Russell King <rmk+ker...@armlinux.org.uk>
Reviewed-by: Florian Fainelli <f.faine...@gmail.com>
Boot-tested-by: Tony Lindgren <t...@atomide.com>
Reviewed-by: Tony Lindgren <t...@atomide.com>
Acked-by: Marc Zyngier <marc.zyng...@arm.com>
Signed-off-by: David A. Long <dave.l...@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
arch/arm/mm/Kconfig | 4 ++++
1 file changed, 4 insertions(+)
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -415,6 +415,7 @@ 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_THUMB_CAPABLE
select CPU_TLB_V7 if MMU
@@ -826,6 +827,9 @@ 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
