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-rw-r--r--arch/arm64/Kconfig6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 0b30e884e088..87e2cbb76930 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1515,6 +1515,12 @@ config ARM64_PTR_AUTH
be enabled. However, KVM guest also require VHE mode and hence
CONFIG_ARM64_VHE=y option to use this feature.
+ If the feature is present on the boot CPU but not on a late CPU, then
+ the late CPU will be parked. Also, if the boot CPU does not have
+ address auth and the late CPU has then the late CPU will still boot
+ but with the feature disabled. On such a system, this option should
+ not be selected.
+
endmenu
menu "ARMv8.5 architectural features"