Add hypercall for guest to get CPU frequency

[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 86eaa02..b169669 100644 (file)
--- a/palacios/src/palacios/vmm_time.c
+++ b/palacios/src/palacios/vmm_time.c
@@ -17,8 +17,20 @@
  * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
  */
 
-#include "palacios/vmm_time.h"
-#include "palacios/vmm.h"
+#include <palacios/vmm_time.h>
+#include <palacios/vmm.h>
+#include <palacios/vm_guest.h>
+
+static int handle_cpufreq_hcall(struct guest_info * info, uint_t hcall_id, void * priv_data) {
+    struct vm_time * time_state = &(info->time_state);
+
+    info->vm_regs.rbx = time_state->cpu_freq;
+
+    PrintDebug("Guest request cpu frequency: return %ld\n", (long)info->vm_regs.rbx);
+    
+    return 0;
+}
+
 
 
 void v3_init_time(struct guest_info * info) {
@@ -32,6 +44,8 @@ void v3_init_time(struct guest_info * info) {
   
     INIT_LIST_HEAD(&(time_state->timers));
     time_state->num_timers = 0;
+
+    v3_register_hypercall(info->vm_info, TIME_CPUFREQ_HCALL, handle_cpufreq_hcall, NULL);
 }
 
 
@@ -60,16 +74,32 @@ int v3_remove_timer(struct guest_info * info, struct vm_timer * timer) {
 
 
 
-void v3_update_time(struct guest_info * info, ullong_t cycles) {
+void v3_update_time(struct guest_info * info, uint64_t cycles) {
     struct vm_timer * tmp_timer;
-  
+    
+    //   cycles *= 8;
+
+//    cycles /= 150;
+
     info->time_state.guest_tsc += cycles;
 
     list_for_each_entry(tmp_timer, &(info->time_state.timers), timer_link) {
-       tmp_timer->ops->update_time(cycles, info->time_state.cpu_freq, tmp_timer->private_data);
+       tmp_timer->ops->update_time(info, cycles, info->time_state.cpu_freq, tmp_timer->private_data);
     }
   
 
 
     //info->time_state.pending_cycles = 0;
 }
+
+void v3_advance_time(struct guest_info * core) {
+    struct vm_timer * tmp_timer;
+
+
+    list_for_each_entry(tmp_timer, &(core->time_state.timers), timer_link) {
+       tmp_timer->ops->advance_timer(core, tmp_timer->private_data);
+    }
+  
+
+
+}