#include <palacios/vmm_types.h>
#include <palacios/vmm_list.h>
+#include <palacios/vmm_msr.h>
#include <palacios/vmm_util.h>
struct guest_info;
struct vm_time {
- uint32_t cpu_freq; // in kHZ
-
- uint64_t last_update; // Last time (in guest time) the timers were updated
- uint64_t pause_time; // Cache value to help calculate the guest_tsc
- sint64_t host_offset; // Offset of guest time from host time.
- sint64_t offset_sum; // Sum of past and current host_offsets
-
- // Installed Timers
+ 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.
+
+ struct v3_msr tsc_aux; // Auxilliary MSR for RDTSCP
+
+ // Installed Timers slaved off of the guest monotonic TSC
uint_t num_timers;
struct list_head timers;
};
void v3_init_time(struct guest_info * info);
int v3_start_time(struct guest_info * info);
-int v3_pause_time(struct guest_info * info);
-int v3_resume_time(struct guest_info * info);
+int v3_adjust_time(struct guest_info * info);
+// Returns host time
static inline uint64_t v3_get_host_time(struct vm_time *t) {
uint64_t tmp;
rdtscll(tmp);
return tmp;
}
+// Returns *monotonic* guest time.
static inline uint64_t v3_get_guest_time(struct vm_time *t) {
- if (t->pause_time) return t->pause_time;
- else return v3_get_host_time(t) + t->host_offset;
+ return v3_get_host_time(t) + t->guest_host_offset;
+}
+
+// Returns the TSC value seen by the guest
+static inline uint64_t v3_get_guest_tsc(struct vm_time *t) {
+ return v3_get_guest_time(t) + t->tsc_guest_offset;
+}
+
+// Returns offset of guest TSC from host TSC
+static inline sint64_t v3_tsc_host_offset(struct vm_time *time_state) {
+ return time_state->guest_host_offset + time_state->tsc_guest_offset;
}
+
+
+#define TSC_MSR 0x10
+#define TSC_AUX_MSR 0xC0000103
+
+int v3_handle_rdtscp(struct guest_info *info);
+int v3_handle_rdtsc(struct guest_info *info);
+
#endif // !__V3VEE__
#endif