diff options
Diffstat (limited to 'arch/arm64/Kconfig')
| -rw-r--r-- | arch/arm64/Kconfig | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 8a35f776c7f1..da590c493ffb 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -161,6 +161,7 @@ config ARM64 select HAVE_PERF_USER_STACK_DUMP select HAVE_REGS_AND_STACK_ACCESS_API select HAVE_FUNCTION_ARG_ACCESS_API + select HAVE_FUTEX_CMPXCHG if FUTEX select HAVE_RCU_TABLE_FREE select HAVE_RSEQ select HAVE_STACKPROTECTOR @@ -1492,6 +1493,22 @@ config ARM64_PTR_AUTH endmenu +menu "ARMv8.5 architectural features" + +config ARM64_E0PD + bool "Enable support for E0PD" + default y + help + E0PD (part of the ARMv8.5 extensions) allows us to ensure + that EL0 accesses made via TTBR1 always fault in constant time, + providing similar benefits to KASLR as those provided by KPTI, but + with lower overhead and without disrupting legitimate access to + kernel memory such as SPE. + + This option enables E0PD for TTBR1 where available. + +endmenu + config ARM64_SVE bool "ARM Scalable Vector Extension support" default y @@ -1552,7 +1569,7 @@ config ARM64_MODULE_PLTS config ARM64_PSEUDO_NMI bool "Support for NMI-like interrupts" - select CONFIG_ARM_GIC_V3 + select ARM_GIC_V3 help Adds support for mimicking Non-Maskable Interrupts through the use of GIC interrupt priority. This support requires version 3 or later of |