tree 921b44e586ea91ce97beb07ce6d59979d8fd9bc2
parent 5cf9ce6e5ea50f805c6188c04ed0daaec7b6887d
author Marc Zyngier <marc.zyngier@arm.com> 1527595868 +0100
committer Catalin Marinas <catalin.marinas@arm.com> 1527784478 +0100

arm64: Add ARCH_WORKAROUND_2 probing

As for Spectre variant-2, we rely on SMCCC 1.1 to provide the
discovery mechanism for detecting the SSBD mitigation.

A new capability is also allocated for that purpose, and a
config option.

Reviewed-by: Julien Grall <julien.grall@arm.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>