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-rw-r--r--arch/arm64/Kconfig13
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index fc8089d..b3f2522 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -748,6 +748,19 @@ config ARM64_LSE_ATOMICS
not support these instructions and requires the kernel to be
built with binutils >= 2.25.
+config ARM64_VHE
+ bool "Enable support for Virtualization Host Extensions (VHE)"
+ default y
+ help
+ Virtualization Host Extensions (VHE) allow the kernel to run
+ directly at EL2 (instead of EL1) on processors that support
+ it. This leads to better performance for KVM, as they reduce
+ the cost of the world switch.
+
+ Selecting this option allows the VHE feature to be detected
+ at runtime, and does not affect processors that do not
+ implement this feature.
+
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