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>
29 #include "allow_devmem.h"
31 #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 static int allow_devmem = 0;
43 module_param(allow_devmem, int, 0);
44 MODULE_PARM_DESC(allow_devmem, "Allow general user-space /dev/mem access even if kernel is strict");
46 // Palacios options parameter
48 module_param(options, charp, 0);
49 MODULE_PARM_DESC(options, "Generic options to internal Palacios modules");
55 static int v3_major_num = 0;
57 static struct v3_guest * guest_map[MAX_VMS] = {[0 ... MAX_VMS - 1] = 0};
58 static struct proc_dir_entry *dir = 0;
60 struct class * v3_class = NULL;
61 static struct cdev ctrl_dev;
63 static int register_vm(struct v3_guest * guest) {
66 for (i = 0; i < MAX_VMS; i++) {
67 if (guest_map[i] == NULL) {
78 static long v3_dev_ioctl(struct file * filp,
79 unsigned int ioctl, unsigned long arg) {
80 void __user * argp = (void __user *)arg;
81 DEBUG("V3 IOCTL %d\n", ioctl);
85 case V3_CREATE_GUEST:{
87 struct v3_guest_img user_image;
88 struct v3_guest * guest = palacios_alloc(sizeof(struct v3_guest));
91 ERROR("Palacios: Error allocating Kernel guest_image\n");
95 memset(guest, 0, sizeof(struct v3_guest));
97 INFO("Palacios: Creating V3 Guest...\n");
99 vm_minor = register_vm(guest);
101 if (vm_minor == -1) {
102 ERROR("Palacios Error: Too many VMs are currently running\n");
106 guest->vm_dev = MKDEV(v3_major_num, vm_minor);
108 if (copy_from_user(&user_image, argp, sizeof(struct v3_guest_img))) {
109 ERROR("Palacios Error: copy from user error getting guest image...\n");
113 guest->img_size = user_image.size;
115 DEBUG("Palacios: Allocating kernel memory for guest image (%llu bytes)\n", user_image.size);
116 guest->img = vmalloc(guest->img_size);
118 if (IS_ERR(guest->img)) {
119 ERROR("Palacios Error: Could not allocate space for guest image\n");
123 if (copy_from_user(guest->img, user_image.guest_data, guest->img_size)) {
124 ERROR("Palacios: Error loading guest data\n");
128 strncpy(guest->name, user_image.name, 127);
130 INIT_LIST_HEAD(&(guest->exts));
132 if (create_palacios_vm(guest) == -1) {
133 ERROR("Palacios: Error creating guest\n");
143 guest_map[vm_minor] = NULL;
145 palacios_free(guest);
151 case V3_FREE_GUEST: {
152 unsigned long vm_idx = arg;
153 struct v3_guest * guest;
155 if (vm_idx > MAX_VMS) {
156 ERROR("Invalid VM index: %ld\n", vm_idx);
160 guest = guest_map[vm_idx];
163 ERROR("No VM at index %ld\n",vm_idx);
167 INFO("Freeing VM (%s) (%p)\n", guest->name, guest);
169 if (free_palacios_vm(guest)<0) {
170 ERROR("Cannot free guest at index %ld\n",vm_idx);
174 guest_map[vm_idx] = NULL;
177 case V3_ADD_MEMORY: {
178 struct v3_mem_region mem;
180 memset(&mem, 0, sizeof(struct v3_mem_region));
182 if (copy_from_user(&mem, argp, sizeof(struct v3_mem_region))) {
183 ERROR("copy from user error getting mem_region...\n");
187 DEBUG("Adding %llu pages to Palacios memory\n", mem.num_pages);
189 if (add_palacios_memory(mem.base_addr, mem.num_pages) == -1) {
190 ERROR("Error adding memory to Palacios\n");
197 case V3_RESET_MEMORY: {
198 if (palacios_init_mm() == -1) {
199 ERROR("Error resetting Palacios memory\n");
206 struct global_ctrl * ctrl = get_global_ctrl(ioctl);
209 return ctrl->handler(ioctl, arg);
212 WARNING("\tUnhandled global ctrl cmd: %d\n", ioctl);
223 static struct file_operations v3_ctrl_fops = {
224 .owner = THIS_MODULE,
225 .unlocked_ioctl = v3_dev_ioctl,
226 .compat_ioctl = v3_dev_ioctl,
231 struct proc_dir_entry *palacios_get_procdir(void)
237 #define MAX_VCORES 32
239 static int read_guests(char * buf, char ** start, off_t off, int count,
240 int * eof, void * data)
245 struct v3_vm_state *s =palacios_alloc(sizeof(struct v3_vm_state)+MAX_VCORES*sizeof(struct v3_vcore_state));
248 ERROR("No space for state structure\n");
252 for(i = 0; i < MAX_VMS; i++) {
253 if (guest_map[i] != NULL) {
257 len += snprintf(buf+len, count-len,
259 guest_map[i]->name, i);
266 s->num_vcores=MAX_VCORES; // max we can handle
267 if (v3_get_state_vm(guest_map[i]->v3_ctx, s)) {
268 ERROR("Cannot get VM info\n");
274 len+=snprintf(buf+len, count-len,
275 "%s [0x%p-0x%p] %lu vcores ",
276 s->state==V3_VM_INVALID ? "INVALID" :
277 s->state==V3_VM_RUNNING ? "running" :
278 s->state==V3_VM_STOPPED ? "stopped" :
279 s->state==V3_VM_PAUSED ? "paused" :
280 s->state==V3_VM_ERROR ? "ERROR" :
281 s->state==V3_VM_SIMULATING ? "simulating" : "UNKNOWN",
282 s->mem_base_paddr, s->mem_base_paddr+s->mem_size-1,
288 for (j=0;j<s->num_vcores;j++) {
289 len+=snprintf(buf+len, count-len,
290 "[vcore %lu %s on pcore %lu %llu exits rip=0x%p %s %s %s] ",
292 s->vcore[j].state==V3_VCORE_INVALID ? "INVALID" :
293 s->vcore[j].state==V3_VCORE_RUNNING ? "running" :
294 s->vcore[j].state==V3_VCORE_STOPPED ? "stopped" : "UNKNOWN",
296 s->vcore[j].num_exits,
297 s->vcore[j].last_rip,
298 s->vcore[j].cpu_mode==V3_VCORE_CPU_REAL ? "real" :
299 s->vcore[j].cpu_mode==V3_VCORE_CPU_PROTECTED ? "protected" :
300 s->vcore[j].cpu_mode==V3_VCORE_CPU_PROTECTED_PAE ? "protectedpae" :
301 s->vcore[j].cpu_mode==V3_VCORE_CPU_LONG ? "long" :
302 s->vcore[j].cpu_mode==V3_VCORE_CPU_LONG_32_COMPAT ? "long32" :
303 s->vcore[j].cpu_mode==V3_VCORE_CPU_LONG_16_COMPAT ? "long16" : "UNKNOWN",
304 s->vcore[j].mem_mode==V3_VCORE_MEM_MODE_PHYSICAL ? "physical" :
305 s->vcore[j].mem_mode==V3_VCORE_MEM_MODE_VIRTUAL ? "virtual" : "UNKNOWN",
306 s->vcore[j].mem_state==V3_VCORE_MEM_STATE_SHADOW ? "shadow" :
307 s->vcore[j].mem_state==V3_VCORE_MEM_STATE_NESTED ? "nested" : "UNKNOWN");
323 if (s) { palacios_free(s); }
328 static int show_mem(char * buf, char ** start, off_t off, int count,
329 int * eof, void * data)
333 len = snprintf(buf,count, "%p\n", (void *)get_palacios_base_addr());
334 len += snprintf(buf+len,count-len, "%lld\n", get_palacios_num_pages());
343 static int __init v3_init(void) {
344 dev_t dev = MKDEV(0, 0); // We dynamicallly assign the major number
351 palacios_allow_devmem();
354 // Initialize Palacios
355 palacios_vmm_init(options);
358 // initialize extensions
359 init_lnx_extensions();
362 v3_class = class_create(THIS_MODULE, "vms");
363 if (IS_ERR(v3_class)) {
364 ERROR("Failed to register V3 VM device class\n");
365 return PTR_ERR(v3_class);
368 INFO("intializing V3 Control device\n");
370 ret = alloc_chrdev_region(&dev, 0, MAX_VMS + 1, "v3vee");
373 ERROR("Error registering device region for V3 devices\n");
377 v3_major_num = MAJOR(dev);
379 dev = MKDEV(v3_major_num, MAX_VMS + 1);
382 DEBUG("Creating V3 Control device: Major %d, Minor %d\n", v3_major_num, MINOR(dev));
383 cdev_init(&ctrl_dev, &v3_ctrl_fops);
384 ctrl_dev.owner = THIS_MODULE;
385 ctrl_dev.ops = &v3_ctrl_fops;
386 cdev_add(&ctrl_dev, dev, 1);
388 device_create(v3_class, NULL, dev, NULL, "v3vee");
391 ERROR("Error adding v3 control device\n");
395 dir = proc_mkdir("v3vee", NULL);
397 struct proc_dir_entry *entry;
399 entry = create_proc_read_entry("v3-guests", 0444, dir,
402 INFO("/proc/v3vee/v3-guests successfully created\n");
404 ERROR("Could not create proc entry\n");
408 entry = create_proc_read_entry("v3-mem", 0444, dir,
411 INFO("/proc/v3vee/v3-mem successfully added\n");
413 ERROR("Could not create proc entry\n");
417 ERROR("Could not create proc entry\n");
424 unregister_chrdev_region(MKDEV(v3_major_num, 0), MAX_VMS + 1);
426 class_destroy(v3_class);
432 static void __exit v3_exit(void) {
433 extern u32 pg_allocs;
438 struct v3_guest * guest;
442 /* Stop and free any running VMs */
443 for (i = 0; i < MAX_VMS; i++) {
444 if (guest_map[i] != NULL) {
445 guest = (struct v3_guest *)guest_map[i];
447 if (v3_stop_vm(guest->v3_ctx) < 0)
448 ERROR("Couldn't stop VM %d\n", i);
450 free_palacios_vm(guest);
455 dev = MKDEV(v3_major_num, MAX_VMS + 1);
457 INFO("Removing V3 Control device\n");
462 DEBUG("Palacios Mallocs = %d, Frees = %d\n", mallocs, frees);
463 DEBUG("Palacios Page Allocs = %d, Page Frees = %d\n", pg_allocs, pg_frees);
465 unregister_chrdev_region(MKDEV(v3_major_num, 0), MAX_VMS + 1);
469 device_destroy(v3_class, dev);
470 class_destroy(v3_class);
473 deinit_lnx_extensions();
476 palacios_restore_devmem();
479 palacios_deinit_mm();
481 remove_proc_entry("v3-guests", dir);
482 remove_proc_entry("v3-mem", dir);
483 remove_proc_entry("v3vee", NULL);
485 DEBUG("Palacios Module Mallocs = %d, Frees = %d\n", mod_allocs, mod_frees);
490 module_init(v3_init);
491 module_exit(v3_exit);
495 void * trace_malloc(size_t size, gfp_t flags) {
499 addr = kmalloc(size, flags);
505 void trace_free(const void * objp) {