added barrier synchronization and integrated it with pause/continue functionality

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

diff --git a/palacios/src/palacios/vmm.c b/palacios/src/palacios/vmm.c
index 7e77412..0597be1 100644 (file)
--- a/palacios/src/palacios/vmm.c
+++ b/palacios/src/palacios/vmm.c
@@ -33,10 +33,6 @@
 #include <palacios/vmx.h>
 #endif
 
-#ifdef V3_CONFIG_VNET
-#include <vnet/vnet.h>
-#endif
-
 
 v3_cpu_arch_t v3_cpu_types[V3_CONFIG_MAX_CPUS];
 struct v3_os_hooks * os_hooks = NULL;
@@ -44,6 +40,7 @@ int v3_dbg_enable = 0;
 
 
 
+
 static void init_cpu(void * arg) {
     uint32_t cpu_id = (uint32_t)(addr_t)arg;
 
@@ -123,10 +120,6 @@ void Init_V3(struct v3_os_hooks * hooks, int num_cpus) {
 #endif
 
 
-#ifdef V3_CONFIG_VNET
-    v3_init_vnet();
-#endif
-
 
 #ifdef V3_CONFIG_MULTITHREAD_OS
     if ((hooks) && (hooks->call_on_cpu)) {
@@ -157,10 +150,6 @@ void Shutdown_V3() {
 #endif
 
 
-#ifdef V3_CONFIG_VNET
-    v3_deinit_vnet();
-#endif
-
 #ifdef V3_CONFIG_MULTITHREAD_OS
     if ((os_hooks) && (os_hooks->call_on_cpu)) {
        for (i = 0; i < V3_CONFIG_MAX_CPUS; i++) {
@@ -204,6 +193,8 @@ struct v3_vm_info * v3_create_vm(void * cfg, void * priv_data, char * name) {
 }
 
 
+
+
 static int start_core(void * p)
 {
     struct guest_info * core = (struct guest_info *)p;
@@ -355,6 +346,33 @@ int v3_start_vm(struct v3_vm_info * vm, unsigned int cpu_mask) {
 }
 
 
+int v3_reset_vm_core(struct guest_info * core, addr_t rip) {
+    
+    switch (v3_cpu_types[core->pcpu_id]) {
+#ifdef V3_CONFIG_SVM
+       case V3_SVM_CPU:
+       case V3_SVM_REV3_CPU:
+           PrintDebug("Resetting SVM Guest CPU %d\n", core->vcpu_id);
+           return v3_reset_svm_vm_core(core, rip);
+#endif
+#ifdef V3_CONFIG_VMX
+       case V3_VMX_CPU:
+       case V3_VMX_EPT_CPU:
+       case V3_VMX_EPT_UG_CPU:
+           PrintDebug("Resetting VMX Guest CPU %d\n", core->vcpu_id);
+           return v3_reset_vmx_vm_core(core, rip);
+#endif
+       case V3_INVALID_CPU:
+       default:
+           PrintError("CPU has no virtualization Extensions\n");
+           break;
+    }
+
+    return -1;
+}
+
+
+
 
 
 int v3_stop_vm(struct v3_vm_info * vm) {
@@ -386,6 +404,32 @@ int v3_stop_vm(struct v3_vm_info * vm) {
 }
 
 
+int v3_pause_vm(struct v3_vm_info * vm) {
+
+    if (vm->run_state != VM_RUNNING) {
+       PrintError("Tried to pause a VM that was not running\n");
+       return -1;
+    }
+
+    while (v3_raise_barrier(vm, NULL) == -1);
+
+    return 0;
+}
+
+
+int v3_continue_vm(struct v3_vm_info * vm) {
+
+    if (vm->run_state != VM_RUNNING) {
+       PrintError("Tried to continue a VM that was not already running\n");
+       return -1;
+    }
+
+    v3_lower_barrier(vm);
+
+    return 0;
+}
+
+
 int v3_free_vm(struct v3_vm_info * vm) {
     int i = 0;
     // deinitialize guest (free memory, etc...)