Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
---
 arch/x86/kvm/Kconfig  |   11 +++++++++++
 arch/x86/kvm/Makefile |    4 ++++
 2 files changed, 15 insertions(+)

--- linux.orig/arch/x86/kvm/Kconfig	2018-12-23 20:09:04.628882396 +0800
+++ linux/arch/x86/kvm/Kconfig	2018-12-23 20:09:04.628882396 +0800
@@ -96,6 +96,17 @@ config KVM_MMU_AUDIT
 	 This option adds a R/W kVM module parameter 'mmu_audit', which allows
 	 auditing of KVM MMU events at runtime.
 
+config KVM_EPT_IDLE
+	tristate "KVM EPT idle page tracking"
+	depends on KVM_INTEL
+	depends on PROC_PAGE_MONITOR
+	---help---
+	  Provides support for walking EPT to get the A bits on Intel
+	  processors equipped with the VT extensions.
+
+	  To compile this as a module, choose M here: the module
+	  will be called kvm-ept-idle.
+
 # OK, it's a little counter-intuitive to do this, but it puts it neatly under
 # the virtualization menu.
 source drivers/vhost/Kconfig
--- linux.orig/arch/x86/kvm/Makefile	2018-12-23 20:09:04.628882396 +0800
+++ linux/arch/x86/kvm/Makefile	2018-12-23 20:09:04.628882396 +0800
@@ -19,6 +19,10 @@ kvm-y			+= x86.o mmu.o emulate.o i8259.o
 kvm-intel-y		+= vmx.o pmu_intel.o
 kvm-amd-y		+= svm.o pmu_amd.o
 
+kvm-ept-idle-y		+= ept_idle.o
+
 obj-$(CONFIG_KVM)	+= kvm.o
 obj-$(CONFIG_KVM_INTEL)	+= kvm-intel.o
 obj-$(CONFIG_KVM_AMD)	+= kvm-amd.o
+
+obj-$(CONFIG_KVM_EPT_IDLE)	+= kvm-ept-idle.o