2 Palacios main control interface
7 #include <linux/module.h>
8 #include <linux/moduleparam.h>
9 #include <linux/errno.h>
10 #include <linux/percpu.h>
12 #include <linux/uaccess.h>
13 #include <linux/device.h>
14 #include <linux/cdev.h>
18 #include <linux/file.h>
19 #include <linux/spinlock.h>
20 #include <linux/kthread.h>
22 #include <linux/proc_fs.h>
24 #include <palacios/vmm.h>
30 #include "linux-exts.h"
34 MODULE_LICENSE("GPL");
37 int cpu_list[NR_CPUS] = {};
39 module_param_array(cpu_list, int, &cpu_list_len, 0644);
40 MODULE_PARM_DESC(cpu_list, "Comma-delimited list of CPUs that Palacios will run on");
46 static int v3_major_num = 0;
48 static struct v3_guest * guest_map[MAX_VMS] = {[0 ... MAX_VMS - 1] = 0};
49 static struct proc_dir_entry *dir = 0;
51 struct class * v3_class = NULL;
52 static struct cdev ctrl_dev;
54 static int register_vm(struct v3_guest * guest) {
57 for (i = 0; i < MAX_VMS; i++) {
58 if (guest_map[i] == NULL) {
69 static long v3_dev_ioctl(struct file * filp,
70 unsigned int ioctl, unsigned long arg) {
71 void __user * argp = (void __user *)arg;
72 DEBUG("V3 IOCTL %d\n", ioctl);
76 case V3_CREATE_GUEST:{
78 struct v3_guest_img user_image;
79 struct v3_guest * guest = palacios_alloc(sizeof(struct v3_guest));
82 ERROR("Palacios: Error allocating Kernel guest_image\n");
86 memset(guest, 0, sizeof(struct v3_guest));
88 INFO("Palacios: Creating V3 Guest...\n");
90 vm_minor = register_vm(guest);
93 ERROR("Palacios Error: Too many VMs are currently running\n");
97 guest->vm_dev = MKDEV(v3_major_num, vm_minor);
99 if (copy_from_user(&user_image, argp, sizeof(struct v3_guest_img))) {
100 ERROR("Palacios Error: copy from user error getting guest image...\n");
104 guest->img_size = user_image.size;
106 DEBUG("Palacios: Allocating kernel memory for guest image (%llu bytes)\n", user_image.size);
107 guest->img = vmalloc(guest->img_size);
109 if (IS_ERR(guest->img)) {
110 ERROR("Palacios Error: Could not allocate space for guest image\n");
114 if (copy_from_user(guest->img, user_image.guest_data, guest->img_size)) {
115 ERROR("Palacios: Error loading guest data\n");
119 strncpy(guest->name, user_image.name, 127);
121 INIT_LIST_HEAD(&(guest->exts));
123 if (create_palacios_vm(guest) == -1) {
124 ERROR("Palacios: Error creating guest\n");
134 guest_map[vm_minor] = NULL;
136 palacios_free(guest);
142 case V3_FREE_GUEST: {
143 unsigned long vm_idx = arg;
144 struct v3_guest * guest;
146 if (vm_idx > MAX_VMS) {
147 ERROR("Invalid VM index: %ld\n", vm_idx);
151 guest = guest_map[vm_idx];
154 ERROR("No VM at index %ld\n",vm_idx);
158 INFO("Freeing VM (%s) (%p)\n", guest->name, guest);
160 if (free_palacios_vm(guest)<0) {
161 ERROR("Cannot free guest at index %ld\n",vm_idx);
165 guest_map[vm_idx] = NULL;
168 case V3_ADD_MEMORY: {
169 struct v3_mem_region mem;
171 memset(&mem, 0, sizeof(struct v3_mem_region));
173 if (copy_from_user(&mem, argp, sizeof(struct v3_mem_region))) {
174 ERROR("copy from user error getting mem_region...\n");
178 DEBUG("Adding %llu pages to Palacios memory\n", mem.num_pages);
180 if (add_palacios_memory(mem.base_addr, mem.num_pages) == -1) {
181 ERROR("Error adding memory to Palacios\n");
188 case V3_RESET_MEMORY: {
189 if (palacios_init_mm() == -1) {
190 ERROR("Error resetting Palacios memory\n");
197 struct global_ctrl * ctrl = get_global_ctrl(ioctl);
200 return ctrl->handler(ioctl, arg);
203 WARNING("\tUnhandled global ctrl cmd: %d\n", ioctl);
214 static struct file_operations v3_ctrl_fops = {
215 .owner = THIS_MODULE,
216 .unlocked_ioctl = v3_dev_ioctl,
217 .compat_ioctl = v3_dev_ioctl,
222 struct proc_dir_entry *palacios_get_procdir(void)
228 #define MAX_VCORES 32
230 static int read_guests(char * buf, char ** start, off_t off, int count,
231 int * eof, void * data)
236 struct v3_vm_state *s =palacios_alloc(sizeof(struct v3_vm_state)+MAX_VCORES*sizeof(struct v3_vcore_state));
239 ERROR("No space for state structure\n");
243 for(i = 0; i < MAX_VMS; i++) {
244 if (guest_map[i] != NULL) {
248 len += snprintf(buf+len, count-len,
250 guest_map[i]->name, i);
257 s->num_vcores=MAX_VCORES; // max we can handle
258 if (v3_get_state_vm(guest_map[i]->v3_ctx, s)) {
259 ERROR("Cannot get VM info\n");
265 len+=snprintf(buf+len, count-len,
266 "%s [0x%p-0x%p] %lu vcores ",
267 s->state==V3_VM_INVALID ? "INVALID" :
268 s->state==V3_VM_RUNNING ? "running" :
269 s->state==V3_VM_STOPPED ? "stopped" :
270 s->state==V3_VM_PAUSED ? "paused" :
271 s->state==V3_VM_ERROR ? "ERROR" :
272 s->state==V3_VM_SIMULATING ? "simulating" : "UNKNOWN",
273 s->mem_base_paddr, s->mem_base_paddr+s->mem_size-1,
279 for (j=0;j<s->num_vcores;j++) {
280 len+=snprintf(buf+len, count-len,
281 "[vcore %lu %s on pcore %lu %llu exits rip=0x%p %s %s %s] ",
283 s->vcore[j].state==V3_VCORE_INVALID ? "INVALID" :
284 s->vcore[j].state==V3_VCORE_RUNNING ? "running" :
285 s->vcore[j].state==V3_VCORE_STOPPED ? "stopped" : "UNKNOWN",
287 s->vcore[j].num_exits,
288 s->vcore[j].last_rip,
289 s->vcore[j].cpu_mode==V3_VCORE_CPU_REAL ? "real" :
290 s->vcore[j].cpu_mode==V3_VCORE_CPU_PROTECTED ? "protected" :
291 s->vcore[j].cpu_mode==V3_VCORE_CPU_PROTECTED_PAE ? "protectedpae" :
292 s->vcore[j].cpu_mode==V3_VCORE_CPU_LONG ? "long" :
293 s->vcore[j].cpu_mode==V3_VCORE_CPU_LONG_32_COMPAT ? "long32" :
294 s->vcore[j].cpu_mode==V3_VCORE_CPU_LONG_16_COMPAT ? "long16" : "UNKNOWN",
295 s->vcore[j].mem_mode==V3_VCORE_MEM_MODE_PHYSICAL ? "physical" :
296 s->vcore[j].mem_mode==V3_VCORE_MEM_MODE_VIRTUAL ? "virtual" : "UNKNOWN",
297 s->vcore[j].mem_state==V3_VCORE_MEM_STATE_SHADOW ? "shadow" :
298 s->vcore[j].mem_state==V3_VCORE_MEM_STATE_NESTED ? "nested" : "UNKNOWN");
314 if (s) { palacios_free(s); }
319 static int show_mem(char * buf, char ** start, off_t off, int count,
320 int * eof, void * data)
324 len = snprintf(buf,count, "%p\n", (void *)get_palacios_base_addr());
325 len += snprintf(buf+len,count-len, "%lld\n", get_palacios_num_pages());
331 static int __init v3_init(void) {
332 dev_t dev = MKDEV(0, 0); // We dynamicallly assign the major number
338 // Initialize Palacios
342 // initialize extensions
343 init_lnx_extensions();
346 v3_class = class_create(THIS_MODULE, "vms");
347 if (IS_ERR(v3_class)) {
348 ERROR("Failed to register V3 VM device class\n");
349 return PTR_ERR(v3_class);
352 INFO("intializing V3 Control device\n");
354 ret = alloc_chrdev_region(&dev, 0, MAX_VMS + 1, "v3vee");
357 ERROR("Error registering device region for V3 devices\n");
361 v3_major_num = MAJOR(dev);
363 dev = MKDEV(v3_major_num, MAX_VMS + 1);
366 DEBUG("Creating V3 Control device: Major %d, Minor %d\n", v3_major_num, MINOR(dev));
367 cdev_init(&ctrl_dev, &v3_ctrl_fops);
368 ctrl_dev.owner = THIS_MODULE;
369 ctrl_dev.ops = &v3_ctrl_fops;
370 cdev_add(&ctrl_dev, dev, 1);
372 device_create(v3_class, NULL, dev, NULL, "v3vee");
375 ERROR("Error adding v3 control device\n");
379 dir = proc_mkdir("v3vee", NULL);
381 struct proc_dir_entry *entry;
383 entry = create_proc_read_entry("v3-guests", 0444, dir,
386 INFO("/proc/v3vee/v3-guests successfully created\n");
388 ERROR("Could not create proc entry\n");
392 entry = create_proc_read_entry("v3-mem", 0444, dir,
395 INFO("/proc/v3vee/v3-mem successfully added\n");
397 ERROR("Could not create proc entry\n");
401 ERROR("Could not create proc entry\n");
408 unregister_chrdev_region(MKDEV(v3_major_num, 0), MAX_VMS + 1);
410 class_destroy(v3_class);
416 static void __exit v3_exit(void) {
417 extern u32 pg_allocs;
422 struct v3_guest * guest;
426 /* Stop and free any running VMs */
427 for (i = 0; i < MAX_VMS; i++) {
428 if (guest_map[i] != NULL) {
429 guest = (struct v3_guest *)guest_map[i];
431 if (v3_stop_vm(guest->v3_ctx) < 0)
432 ERROR("Couldn't stop VM %d\n", i);
434 free_palacios_vm(guest);
439 dev = MKDEV(v3_major_num, MAX_VMS + 1);
441 INFO("Removing V3 Control device\n");
446 DEBUG("Palacios Mallocs = %d, Frees = %d\n", mallocs, frees);
447 DEBUG("Palacios Page Allocs = %d, Page Frees = %d\n", pg_allocs, pg_frees);
449 unregister_chrdev_region(MKDEV(v3_major_num, 0), MAX_VMS + 1);
453 device_destroy(v3_class, dev);
454 class_destroy(v3_class);
457 deinit_lnx_extensions();
459 palacios_deinit_mm();
461 remove_proc_entry("v3-guests", dir);
462 remove_proc_entry("v3-mem", dir);
463 remove_proc_entry("v3vee", NULL);
465 DEBUG("Palacios Module Mallocs = %d, Frees = %d\n", mod_allocs, mod_frees);
470 module_init(v3_init);
471 module_exit(v3_exit);
475 void * trace_malloc(size_t size, gfp_t flags) {
479 addr = kmalloc(size, flags);
485 void trace_free(const void * objp) {