diff options
Diffstat (limited to 'arch/arm64/Kconfig')
| -rw-r--r-- | arch/arm64/Kconfig | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index cfbf307d6dc4..4fab69620719 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -643,6 +643,25 @@ config QCOM_FALKOR_ERRATUM_E1041 If unsure, say Y. +config FUJITSU_ERRATUM_010001 + bool "Fujitsu-A64FX erratum E#010001: Undefined fault may occur wrongly" + default y + help + This option adds workaround for Fujitsu-A64FX erratum E#010001. + On some variants of the Fujitsu-A64FX cores ver(1.0, 1.1), memory + accesses may cause undefined fault (Data abort, DFSC=0b111111). + This fault occurs under a specific hardware condition when a + load/store instruction performs an address translation using: + case-1 TTBR0_EL1 with TCR_EL1.NFD0 == 1. + case-2 TTBR0_EL2 with TCR_EL2.NFD0 == 1. + case-3 TTBR1_EL1 with TCR_EL1.NFD1 == 1. + case-4 TTBR1_EL2 with TCR_EL2.NFD1 == 1. + + The workaround is to ensure these bits are clear in TCR_ELx. + The workaround only affect the Fujitsu-A64FX. + + If unsure, say Y. + endmenu @@ -792,8 +811,7 @@ config SCHED_SMT config NR_CPUS int "Maximum number of CPUs (2-4096)" range 2 4096 - # These have to remain sorted largest to smallest - default "64" + default "256" config HOTPLUG_CPU bool "Support for hot-pluggable CPUs" @@ -1328,6 +1346,20 @@ config ARM64_MODULE_PLTS bool select HAVE_MOD_ARCH_SPECIFIC +config ARM64_PSEUDO_NMI + bool "Support for NMI-like interrupts" + select CONFIG_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 + Arm GIC. + + This high priority configuration for interrupts needs to be + explicitly enabled by setting the kernel parameter + "irqchip.gicv3_pseudo_nmi" to 1. + + If unsure, say N + config RELOCATABLE bool help |