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Subject[RFC PATCH 13/13] x86/Kconfig: Add Kconfig for KVM based XO
Add CONFIG_KVM_XO for supporting KVM based execute only memory.

Signed-off-by: Rick Edgecombe <>
arch/x86/Kconfig | 13 +++++++++++++
1 file changed, 13 insertions(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 222855cc0158..3a3af2a456e8 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -802,6 +802,19 @@ config KVM_GUEST
underlying device model, the host provides the guest with
timing infrastructure such as time of day, and system time

+config KVM_XO
+ bool "Support for KVM based execute only virtual memory permissions"
+ depends on KVM_GUEST && X86_64
+ default y
+ help
+ This option enables support for execute only memory for KVM guests. If
+ support from the underlying VMM is not detected at boot, this
+ capability will automatically disable.
+ If you are unsure how to answer this question, answer Y.
config PVH
bool "Support for running PVH guests"
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