struct guest_info;
+
/* Per-VM time information */
struct v3_time {
- uint32_t td_num, td_denom; /* Currently unused! */
- char follow_host_time;
+ int flags;
+ uint32_t td_num, td_denom;
};
-
-#define V3_TIME_TRAP_RDTSC 0x1
+#define V3_TIME_SLAVE_HOST (1 << 0)
+#define V3_TIME_TSC_PASSTHROUGH (1 << 1)
/* Per-core time information */
struct vm_core_time {
uint32_t host_cpu_freq; // in kHZ
uint32_t guest_cpu_freq; // can be lower than host CPU freq!
- uint32_t clock_ratio_num; // Multipliers for converting from host
- uint32_t clock_ratio_denom;// cycles to guest cycles.
+ // Multipliers for TSC speed and performance speed
+ uint32_t clock_ratio_num, clock_ratio_denom;
+ uint32_t ipc_ratio_num, ipc_ratio_denom;
uint64_t guest_cycles;
sint64_t tsc_guest_offset; // Offset of guest TSC from guest cycles
// timers were updated
uint64_t initial_host_time;// Host time when VMM started.
- uint64_t vm_enter_host_time; // Host time the guest was last entered
- uint64_t vm_pause_host_time; // Host time when we went into the VMM
struct v3_msr tsc_aux; // Auxilliary MSR for RDTSCP
- int time_flags;
+ int flags;
// Installed Timers slaved off of the guest monotonic TSC
uint_t num_timers;
};
+#define VM_TIME_SLAVE_HOST (1 << 0)
+#define VM_TIME_TSC_PASSTHROUGH (1 << 1)
+#define VM_TIME_TRAP_RDTSC (1 << 2)
+
struct v3_timer_ops {
void (*update_timer)(struct guest_info * info, ullong_t cpu_cycles, ullong_t cpu_freq, void * priv_data);
void (*advance_timer)(struct guest_info * info, void * private_data);
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, uint64_t * guest_cycles);
-
-int v3_offset_time(struct guest_info * core, sint64_t offset);
-int v3_skip_time(struct guest_info * core);
-int v3_advance_time(struct guest_info * core);
+int v3_advance_time(struct guest_info * core, uint64_t * guest_cycles);
// Basic functions for attaching timers to the passage of time - these timers
// should eventually specify their accuracy and resolution.
// Returns offset of guest TSC from host TSC
static inline sint64_t v3_tsc_host_offset(struct vm_core_time *time_state) {
uint64_t host_time = v3_get_host_time(time_state);
- return ((sint64_t)host_time - (sint64_t)time_state->guest_cycles) + time_state->tsc_guest_offset;
+ return (sint64_t)v3_get_guest_tsc(time_state) - (sint64_t)host_time;
}
// Functions for handling exits on the TSC when fully virtualizing