From bc3c03ccb4641fb940b27a0d369431876923a8fe Mon Sep 17 00:00:00 2001 From: Julien Thierry Date: Thu, 31 Jan 2019 14:59:03 +0000 Subject: arm64: Enable the support of pseudo-NMIs Add a build option and a command line parameter to build and enable the support of pseudo-NMIs. Signed-off-by: Julien Thierry Suggested-by: Daniel Thompson Cc: Will Deacon Signed-off-by: Catalin Marinas --- arch/arm64/Kconfig | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'arch/arm64/Kconfig') diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 4cad67b9ec0a..c7a44bcfc385 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1327,6 +1327,20 @@ 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 -- cgit v1.2.3-59-g8ed1b