userspace changes to break apart VM lifecycle management

[palacios.git] / linux_module / vm.c

diff --git a/linux_module/vm.c b/linux_module/vm.c
index 890cb69..9869334 100644 (file)
--- a/linux_module/vm.c
+++ b/linux_module/vm.c
@@ -127,10 +127,25 @@ static long v3_vm_ioctl(struct file * filp,
     printk("V3 IOCTL %d\n", ioctl);
 
     switch (ioctl) {
+       case V3_VM_LAUNCH: {
+           printk("palacios: launching vm\n");
 
+           if (v3_start_vm(guest->v3_ctx, 0xfffffffe) < 0) { 
+               printk("palacios: launch of vm failed\n");
+               return -1;
+           }
+           
+           break;
+       }
        case V3_VM_STOP: {
-           printk("Stopping VM (%s)\n", guest->name);
-           stop_palacios_vm(guest);
+           printk("Stopping VM (%s) (%p)\n", guest->name, guest);
+
+           if (irqs_disabled()) {
+               printk("WHAT!!?? IRQs are disabled??\n");
+               break;
+           }
+
+           v3_stop_vm(guest->v3_ctx);
            break;
        }
        case V3_VM_PAUSE: {
@@ -143,7 +158,65 @@ static long v3_vm_ioctl(struct file * filp,
            v3_continue_vm(guest->v3_ctx);
            break;
        }
+#ifdef V3_CONFIG_CHECKPOINT
+       case V3_VM_SAVE: {
+           struct v3_chkpt_info chkpt;
+           void __user * argp = (void __user *)arg;
+
+           memset(&chkpt, 0, sizeof(struct v3_chkpt_info));
+
+           if (copy_from_user(&chkpt, argp, sizeof(struct v3_chkpt_info))) {
+               printk("Copy from user error getting checkpoint info\n");
+               return -EFAULT;
+           }
+           
+           printk("Saving Guest to %s:%s\n", chkpt.store, chkpt.url);
+
+           if (v3_save_vm(guest->v3_ctx, chkpt.store, chkpt.url) == -1) {
+               printk("Error checkpointing VM state\n");
+               return -EFAULT;
+           }
+           
+           break;
+       }
+       case V3_VM_LOAD: {
+           struct v3_chkpt_info chkpt;
+           void __user * argp = (void __user *)arg;
+
+           memset(&chkpt, 0, sizeof(struct v3_chkpt_info));
+
+           if (copy_from_user(&chkpt, argp, sizeof(struct v3_chkpt_info))) {
+               printk("Copy from user error getting checkpoint info\n");
+               return -EFAULT;
+           }
+           
+           printk("Loading Guest to %s:%s\n", chkpt.store, chkpt.url);
+
+           if (v3_load_vm(guest->v3_ctx, chkpt.store, chkpt.url) == -1) {
+               printk("Error Loading VM state\n");
+               return -EFAULT;
+           }
+           
+           break;
+       }
+#endif
+       case V3_VM_MOVE_CORE: {
+           struct v3_core_move_cmd cmd;
+           void __user * argp = (void __user *)arg;
+
+           memset(&cmd, 0, sizeof(struct v3_core_move_cmd));
+           
+           if (copy_from_user(&cmd, argp, sizeof(struct v3_core_move_cmd))) {
+               printk("copy from user error getting migrate command...\n");
+               return -EFAULT;
+           }
+       
+           printk("moving guest %s vcore %d to CPU %d\n", guest->name, cmd.vcore_id, cmd.pcore_id);
+
+           v3_move_vm_core(guest->v3_ctx, cmd.vcore_id, cmd.pcore_id);
 
+           break;
+       }
        default: {
            struct vm_ctrl * ctrl = get_ctrl(guest, ioctl);
 
@@ -194,22 +267,15 @@ extern u32 pg_frees;
 extern u32 mallocs;
 extern u32 frees;
 
-int start_palacios_vm(void * arg)  {
-    struct v3_guest * guest = (struct v3_guest *)arg;
+int create_palacios_vm(struct v3_guest * guest)  {
     int err;
 
-
-    daemonize(guest->name);
-    // allow_signal(SIGKILL);
-
-    
     init_vm_extensions(guest);
 
     guest->v3_ctx = v3_create_vm(guest->img, (void *)guest, guest->name);
 
     if (guest->v3_ctx == NULL) { 
        printk("palacios: failed to create vm\n");
-       complete(&(guest->start_done));
        return -1;
     }
 
@@ -228,7 +294,6 @@ int start_palacios_vm(void * arg)  {
     if (err) {
        printk("Fails to add cdev\n");
        v3_free_vm(guest->v3_ctx);
-       complete(&(guest->start_done));
        return -1;
     }
 
@@ -236,25 +301,10 @@ int start_palacios_vm(void * arg)  {
        printk("Fails to create device\n");
        cdev_del(&(guest->cdev));
        v3_free_vm(guest->v3_ctx);
-       complete(&(guest->start_done));
        return -1;
     }
 
-    complete(&(guest->start_done));
-
-    printk("palacios: launching vm\n");
-
-    if (v3_start_vm(guest->v3_ctx, 0xffffffff) < 0) { 
-       printk("palacios: launch of vm failed\n");
-       device_destroy(v3_class, guest->vm_dev);
-       cdev_del(&(guest->cdev));
-       v3_free_vm(guest->v3_ctx);
-       return -1;
-    }
-    
-    complete(&(guest->thread_done));
-
-    printk("palacios: vm completed.  returning.\n");
+    printk("palacios: vm created at /dev/v3-vm%d\n", MINOR(guest->vm_dev));
 
     return 0;
 }
@@ -262,14 +312,11 @@ int start_palacios_vm(void * arg)  {
 
 
 
-int stop_palacios_vm(struct v3_guest * guest) {
-
-    v3_stop_vm(guest->v3_ctx);
 
-    wait_for_completion(&(guest->thread_done));
+int free_palacios_vm(struct v3_guest * guest) {
 
     v3_free_vm(guest->v3_ctx);
-    
+
     device_destroy(v3_class, guest->vm_dev);
 
     cdev_del(&(guest->cdev));