[PATCH] context_tracking: fix !CONFIG_KVM compile: add stub guestenter/exit

[Kevin Hilman]

When KVM is not enabled, or not available on a platform, the KVM
headers should not be included.  Instead, just define stub
__guest_[enter|exit] functions.

Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Signed-off-by: Kevin Hilman <khilman@xxxxxxxxxx>
---
 kernel/context_tracking.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/kernel/context_tracking.c b/kernel/context_tracking.c
index 65349f0..64b0f80 100644
--- a/kernel/context_tracking.c
+++ b/kernel/context_tracking.c
@@ -15,12 +15,18 @@
  */
 
 #include <linux/context_tracking.h>
-#include <linux/kvm_host.h>
 #include <linux/rcupdate.h>
 #include <linux/sched.h>
 #include <linux/hardirq.h>
 #include <linux/export.h>
 
+#if IS_ENABLED(CONFIG_KVM)
+#include <linux/kvm_host.h>
+#else
+#define __guest_enter()
+#define __guest_exit()
+#endif
+
 DEFINE_PER_CPU(struct context_tracking, context_tracking) = {
 #ifdef CONFIG_CONTEXT_TRACKING_FORCE
 	.active = true,
-- 
1.8.2

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