On 05/16/2018 04:01 AM, Russell King wrote:

In order to prevent aliasing attacks on the branch predictor,
invalidate the BTB or instruction cache on CPUs that are known to be
affected when taking an abort on a address that is outside of a user
task limit:

Cortex A8, A9, A12, A17, A73, A75: flush BTB.
Cortex A15, Brahma B15: invalidate icache.

Signed-off-by: Russell King <redacted>

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
-- 
Florian