arm64: add KASAN support

[deliverable/linux.git] / arch / arm64 / Kconfig

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 7d95663c0160bd2575199e3836570e46fb4a158d..2782c11892084ba095f2ca905da77205d4c22587 100644 (file)
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -32,6 +32,7 @@ config ARM64
        select GENERIC_CLOCKEVENTS_BROADCAST
        select GENERIC_CPU_AUTOPROBE
        select GENERIC_EARLY_IOREMAP
+       select GENERIC_IDLE_POLL_SETUP
        select GENERIC_IRQ_PROBE
        select GENERIC_IRQ_SHOW
        select GENERIC_IRQ_SHOW_LEVEL
@@ -47,6 +48,7 @@ config ARM64
        select HAVE_ARCH_AUDITSYSCALL
        select HAVE_ARCH_BITREVERSE
        select HAVE_ARCH_JUMP_LABEL
+       select HAVE_ARCH_KASAN if SPARSEMEM_VMEMMAP
        select HAVE_ARCH_KGDB
        select HAVE_ARCH_SECCOMP_FILTER
        select HAVE_ARCH_TRACEHOOK
@@ -331,6 +333,22 @@ config ARM64_ERRATUM_845719
 
          If unsure, say Y.
 
+config ARM64_ERRATUM_843419
+       bool "Cortex-A53: 843419: A load or store might access an incorrect address"
+       depends on MODULES
+       default y
+       help
+         This option builds kernel modules using the large memory model in
+         order to avoid the use of the ADRP instruction, which can cause
+         a subsequent memory access to use an incorrect address on Cortex-A53
+         parts up to r0p4.
+
+         Note that the kernel itself must be linked with a version of ld
+         which fixes potentially affected ADRP instructions through the
+         use of veneers.
+
+         If unsure, say Y.
+
 endmenu
 
 
@@ -410,6 +428,7 @@ config NR_CPUS
 
 config HOTPLUG_CPU
        bool "Support for hot-pluggable CPUs"
+       select GENERIC_IRQ_MIGRATION
        help
          Say Y here to experiment with turning CPUs off and on.  CPUs
          can be controlled through /sys/devices/system/cpu.
@@ -437,12 +456,8 @@ config HAVE_ARCH_PFN_VALID
        def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
 
 config HW_PERF_EVENTS
-       bool "Enable hardware performance counter support for perf events"
-       depends on PERF_EVENTS
-       default y
-       help
-         Enable hardware performance counter support for perf events. If
-         disabled, perf events will use software events only.
+       def_bool y
+       depends on ARM_PMU
 
 config SYS_SUPPORTS_HUGETLBFS
        def_bool y