Fixes to time code to allow virtualization to hide costs of running in the

[palacios.git] / Kconfig

diff --git a/Kconfig b/Kconfig
index 2a7a385..0eb9692 100644 (file)
--- a/Kconfig
+++ b/Kconfig
@@ -57,6 +57,13 @@ config VMX
          Compile with support for Intel VMX
 
 
+config DEBUG_INFO
+       bool "Compile with Debug Information"
+       default n
+       help
+         Compiles the Palacios library with debugging symbols
+
+
 menu "Supported host OS features"
       
 config MULTITHREAD_OS
@@ -95,12 +102,20 @@ config CONSOLE
        help 
          Select this if you want to forward a guest console interface to some host OS service
 
-
 config SOCKET
-       bool "Host support for Network Sockets"
-       default y
+        bool "Host support for Network Sockets"
+        default y
+        help
+          Select this if you host OS implements a socket API that is available to Palacios. This is required
+          to support the internal networking features of Palacios.
+
+
+config PACKET
+       bool "Host support for Raw Packet Transmision"
+       depends on EXPERIMENTAL
+       default n
        help 
-         Select this if you host OS implements a socket API that is available to Palacios. This is required 
+         Select this if you host OS implements a raw packet network API that is available to Palacios. This is required 
          to support the internal networking features of Palacios.
 
 endmenu
@@ -127,13 +142,6 @@ config SHADOW_PAGING_TELEMETRY
          Enable telemetry information for shadow paging 
 
 
-config INSTRUMENT_VMM
-       bool "Enable VMM instrumentation"
-       default n
-       help 
-         Enable the instrumentation framework
-         --------
-         This is much heavier weight than profiling
 
 config EXPERIMENTAL
        bool "Enable Experimental options"
@@ -218,14 +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"