Initial support for moving virtual cores among different physical CPUs

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

diff --git a/palacios/src/palacios/vmx.c b/palacios/src/palacios/vmx.c
index 20c0c5f..c7728a5 100644 (file)
--- a/palacios/src/palacios/vmx.c
+++ b/palacios/src/palacios/vmx.c
@@ -786,6 +786,31 @@ int v3_vmx_enter(struct guest_info * info) {
     check_vmcs_write(VMCS_TSC_OFFSET_HIGH, tsc_offset_high);
     check_vmcs_write(VMCS_TSC_OFFSET, tsc_offset_low);
 
+
+    /* determine if we need to move to a different physical core */
+    if(info->core_move_state == CORE_MOVE_PENDING) {
+       vmcs_clear(vmx_info->vmcs_ptr_phys);
+       
+       v3_enable_ints();
+
+       if(V3_MOVE_THREAD_TO_CPU(info->target_pcpu_id, info->core_thread) != 0){
+           PrintError("Failed to move vcore %d to CPU %d\n", info->vcpu_id, info->target_pcpu_id);
+       } else {
+           info->pcpu_id = info->target_pcpu_id;
+           PrintDebug("Core move done, vcore %d is running on CPU %d now\n", info->vcpu_id, V3_Get_CPU());
+       }
+
+       /* disable global interrupts, 
+        *  NOTE now it is being running on a different CPU 
+        */
+       v3_disable_ints();
+
+       vmcs_load(vmx_info->vmcs_ptr_phys);
+       vmx_info->state = VMX_UNLAUNCHED;
+       info->core_move_state= CORE_MOVE_DONE;
+    }
+       
+
     if (v3_update_vmcs_host_state(info)) {
        v3_enable_ints();
         PrintError("Could not write host state\n");