Merge tag 'pci-v4.6-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

[cascardo/linux.git] / arch / arm64 / Kconfig

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index fc8089d..b3f2522 100644 (file)
--- 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.
+
 endmenu
 
 endmenu