if (dev->ops->save) {
struct v3_chkpt_ctx * dev_ctx = NULL;
-
+
+ V3_Print("Saving state for device (%s)\n", dev->name);
dev_ctx = v3_chkpt_open_ctx(chkpt, dev_mgr_ctx, dev->name);
int v3_load_vm_devices(struct v3_vm_info * vm, struct v3_chkpt * chkpt) {
+ struct vm_device * dev;
+ struct v3_chkpt_ctx * dev_mgr_ctx = NULL;
+ uint32_t num_devs = 0;
+ char * name_table = NULL;
+ int i = 0;
- PrintError("TODO... \n");
+ dev_mgr_ctx = v3_chkpt_open_ctx(chkpt, NULL, "devices");
- // Read devices from checkpoint data
- // selectively load them
+ v3_chkpt_load(dev_mgr_ctx, "num_devs", 4, &num_devs);
+
+ V3_Print("Loading State for %d devices\n", num_devs);
+
+ name_table = V3_Malloc(32 * num_devs);
+
+ v3_chkpt_load(dev_mgr_ctx, "names", 32 * num_devs, name_table);
+
+ for (i = 0; i < num_devs; i++) {
+ char * name = &(name_table[i * 32]);
+ struct v3_chkpt_ctx * dev_ctx = NULL;
+ dev = v3_find_dev(vm, name);
+
+ if (!dev) {
+ PrintError("Tried to load state into non existant device: %s\n", name);
+ continue;
+ }
+
+ if (!dev->ops->load) {
+ PrintError("Error Device (%s) does not support load operation\n", name);
+ continue;
+ }
+
+ dev_ctx = v3_chkpt_open_ctx(chkpt, dev_mgr_ctx, name);
+
+ if (!dev_ctx) {
+ PrintError("Error missing device context (%s)\n", name);
+ continue;
+ }
+
+
+ dev->ops->load(dev_ctx, dev->private_data);
+ }
return 0;
}
struct vmm_dev_mgr * mgr = &(vm->dev_mgr);
struct vm_device * dev = NULL;
+
+ // Check if we already registered a device of the same name
+ if (v3_htable_search(mgr->dev_table, (addr_t)name) != (addr_t)NULL) {
+ PrintError("Device with name (%s) already registered with VM\n", name);
+ return NULL;
+ }
+
dev = (struct vm_device *)V3_Malloc(sizeof(struct vm_device));
if (dev == NULL) {