diff options
| author | Nishanth Menon <nm@ti.com> | 2018-06-12 15:24:10 -0500 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2018-06-29 11:30:39 -0400 |
| commit | dbb7caf110c4a7b9afb7cdc195ac6967d3a30adf (patch) | |
| tree | feb42558f200460cf28188f70e9a261a65e1bf90 /arch | |
| parent | c2ca3fdfb916dc8baecea88490df20de4244a7e1 (diff) | |
ARM: mach-omap2: omap5/dra7: Enable ACTLR[0] (Enable invalidates of BTB) to facilitate CVE_2017-5715 WA in OS
Enable CVE_2017_5715 and since we have our own v7_arch_cp15_set_acr
function to setup the bits, we are able to override the settings.
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 CPU1 (on
OMAP5 and DRA72/AM572 SoCs) and may require additional kernel patches.
Signed-off-by: Nishanth Menon <nm@ti.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-omap2/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig index 3bb1ecb58d..77820cc8d1 100644 --- a/arch/arm/mach-omap2/Kconfig +++ b/arch/arm/mach-omap2/Kconfig @@ -53,6 +53,7 @@ config OMAP54XX bool "OMAP54XX SoC" select ARM_ERRATA_798870 select SYS_THUMB_BUILD + select ARM_CORTEX_A15_CVE_2017_5715 imply NAND_OMAP_ELM imply NAND_OMAP_GPMC imply SPL_DISPLAY_PRINT |