Messages in this thread Patch in this message |  | | From | Julien Thierry <> | Subject | [PATCH v5 22/27] arm64: Add build option for IRQ masking via priority | Date | Tue, 28 Aug 2018 16:51:32 +0100 |
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Provide a build option to enable using GICv3 priorities to enable/disable interrupts.
Tested-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Julien Thierry <julien.thierry@arm.com> Suggested-by: Daniel Thompson <daniel.thompson@linaro.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> --- arch/arm64/Kconfig | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 29e75b4..d09c6ff 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -944,6 +944,21 @@ config ARM64_SSBD
If unsure, say Y.
+config USE_ICC_SYSREGS_FOR_IRQFLAGS + bool "Use ICC system registers for IRQ masking" + select CONFIG_ARM_GIC_V3 + help + Using the ICC system registers for IRQ masking makes it possible + to simulate NMI on ARM64 systems. This allows several interesting + features (especially debug features) to be used on these systems. + + Say Y here to implement IRQ masking using ICC system + registers when the GIC System Registers are available. The changes + are applied dynamically using the alternatives system so it is safe + to enable this option on systems with older interrupt controllers. + + If unsure, say N + menuconfig ARMV8_DEPRECATED bool "Emulate deprecated/obsolete ARMv8 instructions" depends on COMPAT -- 1.9.1
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