Enable CVE-2017-5715 option to set the IBE bit. This enables kernel workarounds necessary for the said CVE.
With this enabled, Linux reports: CPU0: Spectre v2: using BPIALL workaround
This workaround may need to be re-applied in OS environment around low power transition resume states where context of ACR would be lost (off-mode etc).
Signed-off-by: Nishanth Menon nm@ti.com --- arch/arm/mach-omap2/Kconfig | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig index 77820cc8d1e4..f4babc8d2600 100644 --- a/arch/arm/mach-omap2/Kconfig +++ b/arch/arm/mach-omap2/Kconfig @@ -10,6 +10,7 @@ config OMAP34XX select ARM_ERRATA_454179 select ARM_ERRATA_621766 select ARM_ERRATA_725233 + select ARM_CORTEX_A8_CVE_2017_5715 select USE_TINY_PRINTF imply NAND_OMAP_GPMC imply SPL_EXT_SUPPORT @@ -116,6 +117,7 @@ config AM43XX config AM33XX bool "AM33XX SoC" select SPECIFY_CONSOLE_INDEX + select ARM_CORTEX_A8_CVE_2017_5715 imply NAND_OMAP_ELM imply NAND_OMAP_GPMC imply SPL_NAND_AM33XX_BCH