Changes to try to make time handling better. Also disabled TSC offsetting for now...

[palacios.git] / palacios / src / palacios / vmm_time.c

diff --git a/palacios/src/palacios/vmm_time.c b/palacios/src/palacios/vmm_time.c
index 781bae7..fa8f5cd 100644 (file)
--- a/palacios/src/palacios/vmm_time.c
+++ b/palacios/src/palacios/vmm_time.c
@@ -172,21 +172,21 @@ static int skew_guest_time(struct guest_info * info) {
     guest_time = v3_get_guest_time(time_state);
 
     if (guest_time < target_guest_time) {
-       uint64_t max_skew, desired_skew, skew;
+       sint64_t max_skew, desired_skew, skew;
 
        if (time_state->enter_time) {
            /* Limit forward skew to 10% of the amount the guest has
             * run since we last could skew time */
-           max_skew = (guest_time - time_state->enter_time) / 10;
+           max_skew = ((sint64_t)guest_time - (sint64_t)time_state->enter_time) / 10;
        } else {
            max_skew = 0;
        }
 
-       desired_skew = target_guest_time - guest_time;
+       desired_skew = (sint64_t)target_guest_time - (sint64_t)guest_time;
        skew = desired_skew > max_skew ? max_skew : desired_skew;
-       PrintDebug("Guest %llu cycles behind where it should be.\n",
+       PrintDebug("Guest %lld cycles behind where it should be.\n",
                   desired_skew);
-       PrintDebug("Limit on forward skew is %llu. Skewing forward %llu.\n",
+       PrintDebug("Limit on forward skew is %lld. Skewing forward %lld.\n",
                   max_skew, skew); 
        
        v3_offset_time(info, skew);
@@ -228,10 +228,10 @@ v3_time_enter_vm( struct guest_info * info )
     struct vm_time * time_state = &(info->time_state);
     uint64_t guest_time, host_time;
 
-    guest_time = v3_get_guest_time(time_state);
     host_time = v3_get_host_time(time_state);
+    guest_time = v3_get_guest_time(time_state);
     time_state->enter_time = host_time;
-    time_state->guest_host_offset = guest_time - host_time;
+    time_state->guest_host_offset = (sint64_t)guest_time - (sint64_t)host_time;
 
     return 0;
 }