From: Nishanth Menon Date: Tue, 12 Jun 2018 20:24:11 +0000 (-0500) Subject: ARM: mach-omap2: omap3/am335x: Enable ACR::IBE on Cortex-A8 SoCs for CVE-2017-5715 X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=94c6a89a99ce651b97fae565b32d79bf86643415;p=u-boot.git ARM: mach-omap2: omap3/am335x: Enable ACR::IBE on Cortex-A8 SoCs for CVE-2017-5715 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 --- diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig index 77820cc8d1..f4babc8d26 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