[U-Boot] [RFC PATCH 2/2] ARM: Introduce ability to enable invalidate of BTB on Cortex-A15 for CVE-2017-5715

[Nishanth Menon]

On 01/26/2018 03:17 AM, Marc Zyngier wrote:
> On 25/01/18 21:45, Nishanth Menon wrote:
>> As recommended by Arm in [1], ACR needs to be set[2] to enable
>> invalidation of BTB. This has to be enabled unconditionally for
>> ICIALLU to be functional on Cortex-A15 processors. Provide a config
> 
> Not quite. ACTLR[0] (Enable invalidates of BTB) has to be set for the
> BTB to be invalidated on ICIALLU. ICIALLU itself is always functional
> (otherwise, we'd have much bigger problems).
> 

Thanks Marc. That did come out completely wrong! Sorry about that. 
will update once we have kernel side story complete.


-- 
Regards,
Nishanth Menon