Commits
Marek Vasut committed a6759e3dfca
ARM: rmobile: gen2: Enable ACTLR[0] (Enable invalidates of BTB) to facilitate CVE_2017-5715 WA in OS Enable CVE_2017_5715 mitigation on CPU0 on R-Car H2, M2W, M2N, V2H, which all contain Cortex-A15 cores. R-Car E2 contains only Cortex-A7 cores and is not affected. Without this enabled, Linux kernel reports: CPU0: Spectre v2: firmware did not set auxiliary control register IBE bit, system vulnerable With this enabled, Linux kernel reports: CPU0: Spectre v2: using ICIALLU workaround NOTE: This by itself does not enable the workaround for other CPUs than CPU0 and may require additional kernel patches for the other CPUs in SMP configurations. Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Nishanth Menon <nm@ti.com> Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>