Messages in this thread | | | Subject | Re: [PATCH v2] arm64: Branch predictor hardening for Cavium ThunderX2 | From | Jon Masters <> | Date | Tue, 16 Jan 2018 16:50:38 -0500 |
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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
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