* and the University of New Mexico. You can find out more at
* http://www.v3vee.org
*
+ * Copyright (c) 2010, Patrick Bridges <bridges@cs.unm.edu>
* Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu>
* Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
* All rights reserved.
*
* Author: Jack Lange <jarusl@cs.northwestern.edu>
+ * Patrick Bridges <bridges@cs.unm.edu>
*
* This is free software. You are permitted to use,
* redistribute, and modify it as specified in the file "V3VEE_LICENSE".
struct vm_time {
uint32_t host_cpu_freq; // in kHZ
uint32_t guest_cpu_freq; // can be lower than host CPU freq!
-
+
sint64_t guest_host_offset;// Offset of monotonic guest time from host time
sint64_t tsc_guest_offset; // Offset of guest TSC from monotonic guest time
-
+
uint64_t last_update; // Last time (in monotonic guest time) the
// timers were updated
uint64_t initial_time; // Time when VMM started.
-
+ uint64_t enter_time; // Host time the guest was last entered
+ uint64_t exit_time; // Host time the the VM was exited to
struct v3_msr tsc_aux; // Auxilliary MSR for RDTSCP
// Installed Timers slaved off of the guest monotonic TSC
void v3_deinit_time_core(struct guest_info * core);
void v3_deinit_time_vm(struct v3_vm_info * vm);
-
int v3_start_time(struct guest_info * core);
+
+int v3_time_enter_vm(struct guest_info * core);
+int v3_time_exit_vm(struct guest_info * core);
+
int v3_adjust_time(struct guest_info * core);
+int v3_offset_time(struct guest_info * core, sint64_t offset);
// Basic functions for attaching timers to the passage of time
struct v3_timer * v3_add_timer(struct guest_info * info, struct v3_timer_ops * ops, void * private_data);
// Returns *monotonic* guest time.
static inline uint64_t v3_get_guest_time(struct vm_time *t) {
+#ifdef V3_CONFIG_TIME_HIDE_VM_COST
+ V3_ASSERT(t->exit_time);
+ return t->exit_time + t->guest_host_offset;
+#else
return v3_get_host_time(t) + t->guest_host_offset;
+#endif
}
// Returns the TSC value seen by the guest