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ARM: spectre: add Kconfig symbol for CPUs vulnerable to Spectre

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Commit c58d237d0852a57fde9bc2c310972e8f4e3d155d upstream.

Add a Kconfig symbol for CPUs which are vulnerable to the Spectre
attacks.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Boot-tested-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Tony Lindgren <tony@atomide.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: David A. Long <dave.long@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Russell King 2018-11-07 11:43:43 -05:00 committed by Greg Kroah-Hartman
parent 901e325f77
commit eed96a3ce0
1 changed files with 4 additions and 0 deletions
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4
arch/arm/mm/Kconfig
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@ -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