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authorJulien Thierry <julien.thierry@arm.com>2019-01-31 14:59:03 +0000
committerCatalin Marinas <catalin.marinas@arm.com>2019-02-06 10:06:41 +0000
commitbc3c03ccb4641fb940b27a0d369431876923a8fe (patch)
tree6173930e48f4dd266c88c932d3a13cd61cdb7f9c /arch/arm64/Kconfig
parentarm64: Skip irqflags tracing for NMI in IRQs disabled context (diff)
downloadlinux-dev-bc3c03ccb4641fb940b27a0d369431876923a8fe.tar.xz
linux-dev-bc3c03ccb4641fb940b27a0d369431876923a8fe.zip
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 <julien.thierry@arm.com> Suggested-by: Daniel Thompson <daniel.thompson@linaro.org> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to '')
-rw-r--r--arch/arm64/Kconfig14
1 files changed, 14 insertions, 0 deletions
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