arm64: Add workaround for Cavium Thunder erratum 30115

[mirror_ubuntu-zesty-kernel.git] / arch / arm64 / Kconfig

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index a3a7227b6f84e7beb980731f60403f59c19faa38..c2f43f62a9fc4e534b0162133b7a5cf8b3485c57 100644 (file)
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -17,6 +17,7 @@ config ARM64
        select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
        select ARCH_HAVE_NMI_SAFE_CMPXCHG if ACPI_APEI_SEA
        select ARCH_USE_CMPXCHG_LOCKREF
+       select ARCH_SUPPORTS_MEMORY_FAILURE
        select ARCH_SUPPORTS_ATOMIC_RMW
        select ARCH_SUPPORTS_NUMA_BALANCING
        select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
@@ -485,6 +486,17 @@ config CAVIUM_ERRATUM_27456
 
          If unsure, say Y.
 
+config CAVIUM_ERRATUM_30115
+       bool "Cavium erratum 30115: Guest may disable interrupts in host"
+       default y
+       help
+         On ThunderX T88 pass 1.x through 2.2, T81 pass 1.0 through
+         1.2, and T83 Pass 1.0, KVM guest execution may disable
+         interrupts in host. Trapping both GICv3 group-0 and group-1
+         accesses sidesteps the issue.
+
+         If unsure, say Y.
+
 config QCOM_FALKOR_ERRATUM_1003
        bool "Falkor E1003: Incorrect translation due to ASID change"
        default y