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H A Dsm_a32.S2ac6322d1ab120281de30375bbd3887ff4ab5bcb Fri Jan 12 13:08:37 UTC 2018 Jens Wiklander <jens.wiklander@linaro.org> core: arm32: sm: runtime selection of spectre workaround

Adds runtime selection of spectre workaround. Special treatment for
Cortex A-15 CPUs on which BPIALL isn't effective and requires a ICIALLU
instead.

Fixes CVE-2017-5715

Fixes: 3bc90f3d3ecd ("core: arm32: sm: invalidate branch predictor")
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>