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-stream.h"
25 #include "palacios-serial.h"
26 #include "palacios-socket.h"
27 #include "palacios-vnet.h"
28 #include "palacios-packet.h"
30 #include "linux-exts.h"
32 #ifdef V3_CONFIG_EXT_INSPECTOR
33 #include "palacios-inspector.h"
36 #ifdef V3_CONFIG_KEYED_STREAMS
37 #include "palacios-keyed-stream.h"
41 MODULE_LICENSE("GPL");
47 static int v3_major_num = 0;
49 static u8 v3_minor_map[MAX_VMS / 8] = {[0 ... (MAX_VMS / 8) - 1] = 0};
52 struct class * v3_class = NULL;
53 static struct cdev ctrl_dev;
55 static int register_vm( void ) {
59 for (i = 0; i < sizeof(v3_minor_map); i++) {
60 if (v3_minor_map[i] != 0xff) {
61 for (j = 0; j < 8; j++) {
62 if (!(v3_minor_map[i] & (0x1 << j))) {
64 v3_minor_map[i] |= (0x1 << j);
84 static long v3_dev_ioctl(struct file * filp,
85 unsigned int ioctl, unsigned long arg) {
86 void __user * argp = (void __user *)arg;
87 printk("V3 IOCTL %d\n", ioctl);
93 struct v3_guest_img user_image;
94 struct v3_guest * guest = kmalloc(sizeof(struct v3_guest), GFP_KERNEL);
97 printk("Error allocating Kernel guest_image\n");
101 memset(guest, 0, sizeof(struct v3_guest));
103 printk("Starting V3 Guest...\n");
105 vm_minor = register_vm();
107 if (vm_minor == -1) {
108 printk("Too many VMs are currently running\n");
112 guest->vm_dev = MKDEV(v3_major_num, vm_minor);
114 if (copy_from_user(&user_image, argp, sizeof(struct v3_guest_img))) {
115 printk("copy from user error getting guest image...\n");
119 guest->img_size = user_image.size;
121 printk("Allocating kernel memory for guest image (%llu bytes)\n", user_image.size);
122 guest->img = vmalloc(guest->img_size);
124 if (IS_ERR(guest->img)) {
125 printk("Error: Could not allocate space for guest image\n");
129 if (copy_from_user(guest->img, user_image.guest_data, guest->img_size)) {
130 printk("Error loading guest data\n");
134 strncpy(guest->name, user_image.name, 127);
136 printk("Launching VM\n");
138 INIT_LIST_HEAD(&(guest->exts));
141 INIT_LIST_HEAD(&(guest->streams));
142 INIT_LIST_HEAD(&(guest->sockets));
143 #ifdef V3_CONFIG_HOST_DEVICE
144 INIT_LIST_HEAD(&(guest->hostdev.devs));
146 init_completion(&(guest->start_done));
147 init_completion(&(guest->thread_done));
150 struct task_struct * launch_thread = NULL;
151 // At some point we're going to want to allow the user to specify a CPU mask
152 // But for now, well just launch from the local core, and rely on the global cpu mask
155 launch_thread = kthread_create(start_palacios_vm, guest, guest->name);
157 if (IS_ERR(launch_thread)) {
159 printk("Palacios error creating launch thread for vm (%s)\n", guest->name);
163 kthread_bind(launch_thread, smp_processor_id());
166 wake_up_process(launch_thread);
169 wait_for_completion(&(guest->start_done));
171 return guest->vm_dev;
174 case V3_ADD_MEMORY: {
175 struct v3_mem_region mem;
177 memset(&mem, 0, sizeof(struct v3_mem_region));
179 if (copy_from_user(&mem, argp, sizeof(struct v3_mem_region))) {
180 printk("copy from user error getting mem_region...\n");
184 printk("Adding %llu pages to Palacios memory\n", mem.num_pages);
186 if (add_palacios_memory(mem.base_addr, mem.num_pages) == -1) {
187 printk("Error adding memory to Palacios\n");
195 printk("\tUnhandled\n");
204 static struct file_operations v3_ctrl_fops = {
205 .owner = THIS_MODULE,
206 .unlocked_ioctl = v3_dev_ioctl,
207 .compat_ioctl = v3_dev_ioctl,
212 static int __init v3_init(void) {
213 dev_t dev = MKDEV(0, 0); // We dynamicallly assign the major number
220 // Initialize Palacios
225 // initialize extensions
226 init_lnx_extensions();
229 v3_class = class_create(THIS_MODULE, "vms");
230 if (IS_ERR(v3_class)) {
231 printk("Failed to register V3 VM device class\n");
232 return PTR_ERR(v3_class);
235 printk("intializing V3 Control device\n");
237 ret = alloc_chrdev_region(&dev, 0, MAX_VMS + 1, "v3vee");
240 printk("Error registering device region for V3 devices\n");
244 v3_major_num = MAJOR(dev);
246 dev = MKDEV(v3_major_num, MAX_VMS + 1);
249 printk("Creating V3 Control device: Major %d, Minor %d\n", v3_major_num, MINOR(dev));
250 cdev_init(&ctrl_dev, &v3_ctrl_fops);
251 ctrl_dev.owner = THIS_MODULE;
252 ctrl_dev.ops = &v3_ctrl_fops;
253 cdev_add(&ctrl_dev, dev, 1);
255 device_create(v3_class, NULL, dev, NULL, "v3vee");
258 printk("Error adding v3 control device\n");
264 #ifdef V3_CONFIG_STREAM
265 palacios_init_stream();
268 #ifdef V3_CONFIG_KEYED_STREAMS
269 palacios_init_keyed_streams();
272 #ifdef V3_CONFIG_GRAPHICS_CONSOLE
273 palacios_init_graphics_console();
276 #ifdef V3_CONFIG_EXT_INSPECTOR
277 palacios_init_inspector();
280 #ifdef V3_CONFIG_SOCKET
281 palacios_socket_init();
284 #ifdef V3_CONFIG_PACKET
285 palacios_init_packet(NULL);
288 #ifdef V3_CONFIG_VNET
289 palacios_vnet_init();
292 #ifdef V3_CONFIG_HOST_DEVICE
293 palacios_init_host_dev();
299 unregister_chrdev_region(MKDEV(v3_major_num, 0), MAX_VMS + 1);
301 class_destroy(v3_class);
307 static void __exit v3_exit(void) {
308 extern u32 pg_allocs;
314 // should probably try to stop any guests
318 dev_t dev = MKDEV(v3_major_num, MAX_VMS + 1);
320 printk("Removing V3 Control device\n");
325 printk("Palacios Mallocs = %d, Frees = %d\n", mallocs, frees);
326 printk("Palacios Page Allocs = %d, Page Frees = %d\n", pg_allocs, pg_frees);
328 unregister_chrdev_region(MKDEV(v3_major_num, 0), MAX_VMS + 1);
332 device_destroy(v3_class, dev);
333 class_destroy(v3_class);
336 deinit_lnx_extensions();
339 #ifdef V3_CONFIG_EXT_INSPECTOR
340 palacios_deinit_inspector();
344 #ifdef V3_CONFIG_STREAM
345 palacios_deinit_stream();
348 #ifdef V3_CONFIG_SOCKET
349 palacios_socket_deinit();
352 #ifdef V3_CONFIG_PACKET
353 palacios_deinit_packet(NULL);
356 #ifdef V3_CONFIG_VNET
357 palacios_vnet_deinit();
360 palacios_deinit_mm();
362 printk("Palacios Module Mallocs = %d, Frees = %d\n", mod_allocs, mod_frees);
367 module_init(v3_init);
368 module_exit(v3_exit);
372 void * trace_malloc(size_t size, gfp_t flags) {
376 addr = kmalloc(size, flags);
382 void trace_free(const void * objp) {