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");
42 // Palacios options parameter
44 module_param(options, charp, 0);
45 MODULE_PARM_DESC(options, "Generic options to internal Palacios modules");
50 static int v3_major_num = 0;
52 static struct v3_guest * guest_map[MAX_VMS] = {[0 ... MAX_VMS - 1] = 0};
53 static struct proc_dir_entry *dir = 0;
55 struct class * v3_class = NULL;
56 static struct cdev ctrl_dev;
58 static int register_vm(struct v3_guest * guest) {
61 for (i = 0; i < MAX_VMS; i++) {
62 if (guest_map[i] == NULL) {
73 static long v3_dev_ioctl(struct file * filp,
74 unsigned int ioctl, unsigned long arg) {
75 void __user * argp = (void __user *)arg;
76 DEBUG("V3 IOCTL %d\n", ioctl);
80 case V3_CREATE_GUEST:{
82 struct v3_guest_img user_image;
83 struct v3_guest * guest = palacios_alloc(sizeof(struct v3_guest));
86 ERROR("Palacios: Error allocating Kernel guest_image\n");
90 memset(guest, 0, sizeof(struct v3_guest));
92 INFO("Palacios: Creating V3 Guest...\n");
94 vm_minor = register_vm(guest);
97 ERROR("Palacios Error: Too many VMs are currently running\n");
101 guest->vm_dev = MKDEV(v3_major_num, vm_minor);
103 if (copy_from_user(&user_image, argp, sizeof(struct v3_guest_img))) {
104 ERROR("Palacios Error: copy from user error getting guest image...\n");
108 guest->img_size = user_image.size;
110 DEBUG("Palacios: Allocating kernel memory for guest image (%llu bytes)\n", user_image.size);
111 guest->img = vmalloc(guest->img_size);
113 if (IS_ERR(guest->img)) {
114 ERROR("Palacios Error: Could not allocate space for guest image\n");
118 if (copy_from_user(guest->img, user_image.guest_data, guest->img_size)) {
119 ERROR("Palacios: Error loading guest data\n");
123 strncpy(guest->name, user_image.name, 127);
125 INIT_LIST_HEAD(&(guest->exts));
127 if (create_palacios_vm(guest) == -1) {
128 ERROR("Palacios: Error creating guest\n");
138 guest_map[vm_minor] = NULL;
140 palacios_free(guest);
146 case V3_FREE_GUEST: {
147 unsigned long vm_idx = arg;
148 struct v3_guest * guest;
150 if (vm_idx > MAX_VMS) {
151 ERROR("Invalid VM index: %ld\n", vm_idx);
155 guest = guest_map[vm_idx];
158 ERROR("No VM at index %ld\n",vm_idx);
162 INFO("Freeing VM (%s) (%p)\n", guest->name, guest);
164 if (free_palacios_vm(guest)<0) {
165 ERROR("Cannot free guest at index %ld\n",vm_idx);
169 guest_map[vm_idx] = NULL;
172 case V3_ADD_MEMORY: {
173 struct v3_mem_region mem;
175 memset(&mem, 0, sizeof(struct v3_mem_region));
177 if (copy_from_user(&mem, argp, sizeof(struct v3_mem_region))) {
178 ERROR("copy from user error getting mem_region...\n");
182 DEBUG("Adding %llu pages to Palacios memory\n", mem.num_pages);
184 if (add_palacios_memory(mem.base_addr, mem.num_pages) == -1) {
185 ERROR("Error adding memory to Palacios\n");
192 case V3_RESET_MEMORY: {
193 if (palacios_init_mm() == -1) {
194 ERROR("Error resetting Palacios memory\n");
201 struct global_ctrl * ctrl = get_global_ctrl(ioctl);
204 return ctrl->handler(ioctl, arg);
207 WARNING("\tUnhandled global ctrl cmd: %d\n", ioctl);
218 static struct file_operations v3_ctrl_fops = {
219 .owner = THIS_MODULE,
220 .unlocked_ioctl = v3_dev_ioctl,
221 .compat_ioctl = v3_dev_ioctl,
226 struct proc_dir_entry *palacios_get_procdir(void)
232 #define MAX_VCORES 32
234 static int read_guests(char * buf, char ** start, off_t off, int count,
235 int * eof, void * data)
240 struct v3_vm_state *s =palacios_alloc(sizeof(struct v3_vm_state)+MAX_VCORES*sizeof(struct v3_vcore_state));
243 ERROR("No space for state structure\n");
247 for(i = 0; i < MAX_VMS; i++) {
248 if (guest_map[i] != NULL) {
252 len += snprintf(buf+len, count-len,
254 guest_map[i]->name, i);
261 s->num_vcores=MAX_VCORES; // max we can handle
262 if (v3_get_state_vm(guest_map[i]->v3_ctx, s)) {
263 ERROR("Cannot get VM info\n");
269 len+=snprintf(buf+len, count-len,
270 "%s [0x%p-0x%p] %lu vcores ",
271 s->state==V3_VM_INVALID ? "INVALID" :
272 s->state==V3_VM_RUNNING ? "running" :
273 s->state==V3_VM_STOPPED ? "stopped" :
274 s->state==V3_VM_PAUSED ? "paused" :
275 s->state==V3_VM_ERROR ? "ERROR" :
276 s->state==V3_VM_SIMULATING ? "simulating" : "UNKNOWN",
277 s->mem_base_paddr, s->mem_base_paddr+s->mem_size-1,
283 for (j=0;j<s->num_vcores;j++) {
284 len+=snprintf(buf+len, count-len,
285 "[vcore %lu %s on pcore %lu %llu exits rip=0x%p %s %s %s] ",
287 s->vcore[j].state==V3_VCORE_INVALID ? "INVALID" :
288 s->vcore[j].state==V3_VCORE_RUNNING ? "running" :
289 s->vcore[j].state==V3_VCORE_STOPPED ? "stopped" : "UNKNOWN",
291 s->vcore[j].num_exits,
292 s->vcore[j].last_rip,
293 s->vcore[j].cpu_mode==V3_VCORE_CPU_REAL ? "real" :
294 s->vcore[j].cpu_mode==V3_VCORE_CPU_PROTECTED ? "protected" :
295 s->vcore[j].cpu_mode==V3_VCORE_CPU_PROTECTED_PAE ? "protectedpae" :
296 s->vcore[j].cpu_mode==V3_VCORE_CPU_LONG ? "long" :
297 s->vcore[j].cpu_mode==V3_VCORE_CPU_LONG_32_COMPAT ? "long32" :
298 s->vcore[j].cpu_mode==V3_VCORE_CPU_LONG_16_COMPAT ? "long16" : "UNKNOWN",
299 s->vcore[j].mem_mode==V3_VCORE_MEM_MODE_PHYSICAL ? "physical" :
300 s->vcore[j].mem_mode==V3_VCORE_MEM_MODE_VIRTUAL ? "virtual" : "UNKNOWN",
301 s->vcore[j].mem_state==V3_VCORE_MEM_STATE_SHADOW ? "shadow" :
302 s->vcore[j].mem_state==V3_VCORE_MEM_STATE_NESTED ? "nested" : "UNKNOWN");
318 if (s) { palacios_free(s); }
323 static int show_mem(char * buf, char ** start, off_t off, int count,
324 int * eof, void * data)
328 len = snprintf(buf,count, "%p\n", (void *)get_palacios_base_addr());
329 len += snprintf(buf+len,count-len, "%lld\n", get_palacios_num_pages());
335 static int __init v3_init(void) {
336 dev_t dev = MKDEV(0, 0); // We dynamicallly assign the major number
342 // Initialize Palacios
343 palacios_vmm_init(options);
346 // initialize extensions
347 init_lnx_extensions();
350 v3_class = class_create(THIS_MODULE, "vms");
351 if (IS_ERR(v3_class)) {
352 ERROR("Failed to register V3 VM device class\n");
353 return PTR_ERR(v3_class);
356 INFO("intializing V3 Control device\n");
358 ret = alloc_chrdev_region(&dev, 0, MAX_VMS + 1, "v3vee");
361 ERROR("Error registering device region for V3 devices\n");
365 v3_major_num = MAJOR(dev);
367 dev = MKDEV(v3_major_num, MAX_VMS + 1);
370 DEBUG("Creating V3 Control device: Major %d, Minor %d\n", v3_major_num, MINOR(dev));
371 cdev_init(&ctrl_dev, &v3_ctrl_fops);
372 ctrl_dev.owner = THIS_MODULE;
373 ctrl_dev.ops = &v3_ctrl_fops;
374 cdev_add(&ctrl_dev, dev, 1);
376 device_create(v3_class, NULL, dev, NULL, "v3vee");
379 ERROR("Error adding v3 control device\n");
383 dir = proc_mkdir("v3vee", NULL);
385 struct proc_dir_entry *entry;
387 entry = create_proc_read_entry("v3-guests", 0444, dir,
390 INFO("/proc/v3vee/v3-guests successfully created\n");
392 ERROR("Could not create proc entry\n");
396 entry = create_proc_read_entry("v3-mem", 0444, dir,
399 INFO("/proc/v3vee/v3-mem successfully added\n");
401 ERROR("Could not create proc entry\n");
405 ERROR("Could not create proc entry\n");
412 unregister_chrdev_region(MKDEV(v3_major_num, 0), MAX_VMS + 1);
414 class_destroy(v3_class);
420 static void __exit v3_exit(void) {
421 extern u32 pg_allocs;
426 struct v3_guest * guest;
430 /* Stop and free any running VMs */
431 for (i = 0; i < MAX_VMS; i++) {
432 if (guest_map[i] != NULL) {
433 guest = (struct v3_guest *)guest_map[i];
435 if (v3_stop_vm(guest->v3_ctx) < 0)
436 ERROR("Couldn't stop VM %d\n", i);
438 free_palacios_vm(guest);
443 dev = MKDEV(v3_major_num, MAX_VMS + 1);
445 INFO("Removing V3 Control device\n");
450 DEBUG("Palacios Mallocs = %d, Frees = %d\n", mallocs, frees);
451 DEBUG("Palacios Page Allocs = %d, Page Frees = %d\n", pg_allocs, pg_frees);
453 unregister_chrdev_region(MKDEV(v3_major_num, 0), MAX_VMS + 1);
457 device_destroy(v3_class, dev);
458 class_destroy(v3_class);
461 deinit_lnx_extensions();
463 palacios_deinit_mm();
465 remove_proc_entry("v3-guests", dir);
466 remove_proc_entry("v3-mem", dir);
467 remove_proc_entry("v3vee", NULL);
469 DEBUG("Palacios Module Mallocs = %d, Frees = %d\n", mod_allocs, mod_frees);
474 module_init(v3_init);
475 module_exit(v3_exit);
479 void * trace_malloc(size_t size, gfp_t flags) {
483 addr = kmalloc(size, flags);
489 void trace_free(const void * objp) {