2 Palacios main control interface
7 #include <linux/module.h>
8 #include <linux/errno.h>
9 #include <linux/percpu.h>
11 #include <linux/uaccess.h>
12 #include <linux/device.h>
13 #include <linux/cdev.h>
17 #include <linux/file.h>
18 #include <linux/spinlock.h>
19 #include <linux/kthread.h>
22 #include "palacios-mm.h"
23 #include "palacios-vm.h"
24 #include "palacios-serial.h"
25 #include "palacios-socket.h"
26 #include "palacios-vnet.h"
27 #include "palacios-packet.h"
29 #include "linux-exts.h"
32 #ifdef V3_CONFIG_KEYED_STREAMS
33 #include "palacios-keyed-stream.h"
37 MODULE_LICENSE("GPL");
43 static int v3_major_num = 0;
45 static u8 v3_minor_map[MAX_VMS / 8] = {[0 ... (MAX_VMS / 8) - 1] = 0};
48 struct class * v3_class = NULL;
49 static struct cdev ctrl_dev;
51 static int register_vm( void ) {
55 for (i = 0; i < sizeof(v3_minor_map); i++) {
56 if (v3_minor_map[i] != 0xff) {
57 for (j = 0; j < 8; j++) {
58 if (!(v3_minor_map[i] & (0x1 << j))) {
60 v3_minor_map[i] |= (0x1 << j);
80 static long v3_dev_ioctl(struct file * filp,
81 unsigned int ioctl, unsigned long arg) {
82 void __user * argp = (void __user *)arg;
83 printk("V3 IOCTL %d\n", ioctl);
89 struct v3_guest_img user_image;
90 struct v3_guest * guest = kmalloc(sizeof(struct v3_guest), GFP_KERNEL);
93 printk("Error allocating Kernel guest_image\n");
97 memset(guest, 0, sizeof(struct v3_guest));
99 printk("Starting V3 Guest...\n");
101 vm_minor = register_vm();
103 if (vm_minor == -1) {
104 printk("Too many VMs are currently running\n");
108 guest->vm_dev = MKDEV(v3_major_num, vm_minor);
110 if (copy_from_user(&user_image, argp, sizeof(struct v3_guest_img))) {
111 printk("copy from user error getting guest image...\n");
115 guest->img_size = user_image.size;
117 printk("Allocating kernel memory for guest image (%llu bytes)\n", user_image.size);
118 guest->img = vmalloc(guest->img_size);
120 if (IS_ERR(guest->img)) {
121 printk("Error: Could not allocate space for guest image\n");
125 if (copy_from_user(guest->img, user_image.guest_data, guest->img_size)) {
126 printk("Error loading guest data\n");
130 strncpy(guest->name, user_image.name, 127);
132 printk("Launching VM\n");
134 INIT_LIST_HEAD(&(guest->exts));
137 INIT_LIST_HEAD(&(guest->sockets));
138 #ifdef V3_CONFIG_HOST_DEVICE
139 INIT_LIST_HEAD(&(guest->hostdev.devs));
141 init_completion(&(guest->start_done));
142 init_completion(&(guest->thread_done));
145 struct task_struct * launch_thread = NULL;
146 // At some point we're going to want to allow the user to specify a CPU mask
147 // But for now, well just launch from the local core, and rely on the global cpu mask
150 launch_thread = kthread_create(start_palacios_vm, guest, guest->name);
152 if (IS_ERR(launch_thread)) {
154 printk("Palacios error creating launch thread for vm (%s)\n", guest->name);
158 kthread_bind(launch_thread, smp_processor_id());
161 wake_up_process(launch_thread);
164 wait_for_completion(&(guest->start_done));
166 return guest->vm_dev;
169 case V3_ADD_MEMORY: {
170 struct v3_mem_region mem;
172 memset(&mem, 0, sizeof(struct v3_mem_region));
174 if (copy_from_user(&mem, argp, sizeof(struct v3_mem_region))) {
175 printk("copy from user error getting mem_region...\n");
179 printk("Adding %llu pages to Palacios memory\n", mem.num_pages);
181 if (add_palacios_memory(mem.base_addr, mem.num_pages) == -1) {
182 printk("Error adding memory to Palacios\n");
190 printk("\tUnhandled\n");
199 static struct file_operations v3_ctrl_fops = {
200 .owner = THIS_MODULE,
201 .unlocked_ioctl = v3_dev_ioctl,
202 .compat_ioctl = v3_dev_ioctl,
207 static int __init v3_init(void) {
208 dev_t dev = MKDEV(0, 0); // We dynamicallly assign the major number
215 // Initialize Palacios
220 // initialize extensions
221 init_lnx_extensions();
224 v3_class = class_create(THIS_MODULE, "vms");
225 if (IS_ERR(v3_class)) {
226 printk("Failed to register V3 VM device class\n");
227 return PTR_ERR(v3_class);
230 printk("intializing V3 Control device\n");
232 ret = alloc_chrdev_region(&dev, 0, MAX_VMS + 1, "v3vee");
235 printk("Error registering device region for V3 devices\n");
239 v3_major_num = MAJOR(dev);
241 dev = MKDEV(v3_major_num, MAX_VMS + 1);
244 printk("Creating V3 Control device: Major %d, Minor %d\n", v3_major_num, MINOR(dev));
245 cdev_init(&ctrl_dev, &v3_ctrl_fops);
246 ctrl_dev.owner = THIS_MODULE;
247 ctrl_dev.ops = &v3_ctrl_fops;
248 cdev_add(&ctrl_dev, dev, 1);
250 device_create(v3_class, NULL, dev, NULL, "v3vee");
253 printk("Error adding v3 control device\n");
260 #ifdef V3_CONFIG_KEYED_STREAMS
261 palacios_init_keyed_streams();
264 #ifdef V3_CONFIG_GRAPHICS_CONSOLE
265 palacios_init_graphics_console();
269 #ifdef V3_CONFIG_SOCKET
270 palacios_socket_init();
273 #ifdef V3_CONFIG_PACKET
274 palacios_init_packet(NULL);
277 #ifdef V3_CONFIG_VNET
278 palacios_vnet_init();
281 #ifdef V3_CONFIG_HOST_DEVICE
282 palacios_init_host_dev();
288 unregister_chrdev_region(MKDEV(v3_major_num, 0), MAX_VMS + 1);
290 class_destroy(v3_class);
296 static void __exit v3_exit(void) {
297 extern u32 pg_allocs;
303 // should probably try to stop any guests
307 dev_t dev = MKDEV(v3_major_num, MAX_VMS + 1);
309 printk("Removing V3 Control device\n");
314 printk("Palacios Mallocs = %d, Frees = %d\n", mallocs, frees);
315 printk("Palacios Page Allocs = %d, Page Frees = %d\n", pg_allocs, pg_frees);
317 unregister_chrdev_region(MKDEV(v3_major_num, 0), MAX_VMS + 1);
321 device_destroy(v3_class, dev);
322 class_destroy(v3_class);
325 deinit_lnx_extensions();
331 #ifdef V3_CONFIG_SOCKET
332 palacios_socket_deinit();
335 #ifdef V3_CONFIG_PACKET
336 palacios_deinit_packet(NULL);
339 #ifdef V3_CONFIG_VNET
340 palacios_vnet_deinit();
343 palacios_deinit_mm();
345 printk("Palacios Module Mallocs = %d, Frees = %d\n", mod_allocs, mod_frees);
350 module_init(v3_init);
351 module_exit(v3_exit);
355 void * trace_malloc(size_t size, gfp_t flags) {
359 addr = kmalloc(size, flags);
365 void trace_free(const void * objp) {