X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=Kconfig;h=0eb969231eda21b3d5b2148fd386a8ddbff6554b;hb=22c7f98617f63f097b08e8159383c23aa6d9ad33;hp=dcee752de61901262492756f026a1043f7439ccb;hpb=18713f98a14335b09cb7d87b3bea087255eaf10d;p=palacios-OLD.git

diff --git a/Kconfig b/Kconfig
index dcee752..0eb9692 100644
--- a/Kconfig
+++ b/Kconfig
@@ -226,14 +226,40 @@ endmenu
 
 menu "Time Management"
 
+config TIME_HIDE_VM_COST
+        bool "Hide VMM Run Cost"
+	default n
+	help
+	    Offset guest time from host time sufficiently to hide the cost of
+	    running in the virtual machine. This can aid the consistency of
+	    time between multiple timers, but can cause the guest to run 
+	    slightly slower than the host.
+
+config TIME_HIDE_EXIT_COST
+        bool "Hide VMM Exit Cost"
+	default n
+	depends on TIME_HIDE_VM_COST
+	help
+	    Add additional TSC offset to hide VMM exit costs from the guest.
+
+config TIME_EXIT_COST_ADJUST
+       int "Exit cost adjustment for hiding VM exits"
+       default 2000
+       depends on TIME_HIDE_EXIT_COST
+       help
+           Amount to adjust the time to hide the exit cost of fully virtualizing
+	   the timestamp counter. Used to hide the cost of fully virtualizing 
+	   the TSC for OSes that assume that reading the TSC is inexpensive 
+	   (e.g. Linux TSC-based timer calibration).
+
 config TIME_VIRTUALIZE_TSC
-	bool "Virtualize guest TSC"
+	bool "Fully virtualize guest TSC"
 	default n
 	help
 	    Virtualize the processor time stamp counter in the guest, 
 	    generally increasing consistency between various time sources 
 	    but also potentially making guest time run slower than real time.
-
+	 
 endmenu
 
 menu "Symbiotic Functions"