Re: [PATCH v2] arm64: Branch predictor hardening for Cavium ThunderX2

[Jon Masters]

On 01/09/2018 07:47 AM, Jayachandran C wrote:
> Use PSCI based mitigation for speculative execution attacks targeting
> the branch predictor. The approach is similar to the one used for
> Cortex-A CPUs, but in case of ThunderX2 we add another SMC call to
> test if the firmware supports the capability.
> 
> If the secure firmware has been updated with the mitigation code to
> invalidate the branch target buffer, we use the PSCI version call to
> invoke it.

What's the status of this patch for TX2? Previously you were holding on
the new SMC number, but I think the consensus was to pull this in now?

Jon.

-- 
Computer Architect