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"
30 #include "lockcheck.h"
32 #include "linux-exts.h"
35 MODULE_LICENSE("GPL");
38 int cpu_list[NR_CPUS] = {};
40 module_param_array(cpu_list, int, &cpu_list_len, 0644);
41 MODULE_PARM_DESC(cpu_list, "Comma-delimited list of CPUs that Palacios will run on");
43 static int allow_devmem = 0;
44 module_param(allow_devmem, int, 0);
45 MODULE_PARM_DESC(allow_devmem, "Allow general user-space /dev/mem access even if kernel is strict");
47 // Palacios options parameter
49 module_param(options, charp, 0);
50 MODULE_PARM_DESC(options, "Generic options to internal Palacios modules");
56 static int v3_major_num = 0;
58 static struct v3_guest * guest_map[MAX_VMS] = {[0 ... MAX_VMS - 1] = 0};
59 static struct proc_dir_entry *dir = 0;
61 struct class * v3_class = NULL;
62 static struct cdev ctrl_dev;
64 static int register_vm(struct v3_guest * guest) {
67 for (i = 0; i < MAX_VMS; i++) {
68 if (guest_map[i] == NULL) {
79 static long v3_dev_ioctl(struct file * filp,
80 unsigned int ioctl, unsigned long arg) {
81 void __user * argp = (void __user *)arg;
82 DEBUG("V3 IOCTL %d\n", ioctl);
86 case V3_CREATE_GUEST:{
88 struct v3_guest_img user_image;
89 struct v3_guest * guest = palacios_alloc(sizeof(struct v3_guest));
92 ERROR("Palacios: Error allocating Kernel guest_image\n");
96 memset(guest, 0, sizeof(struct v3_guest));
98 INFO("Palacios: Creating V3 Guest...\n");
100 vm_minor = register_vm(guest);
102 if (vm_minor == -1) {
103 ERROR("Palacios Error: Too many VMs are currently running\n");
107 guest->vm_dev = MKDEV(v3_major_num, vm_minor);
109 if (copy_from_user(&user_image, argp, sizeof(struct v3_guest_img))) {
110 ERROR("Palacios Error: copy from user error getting guest image...\n");
114 guest->img_size = user_image.size;
116 DEBUG("Palacios: Allocating kernel memory for guest image (%llu bytes)\n", user_image.size);
117 guest->img = palacios_valloc(guest->img_size);
119 if (IS_ERR(guest->img)) {
120 ERROR("Palacios Error: Could not allocate space for guest image\n");
124 if (copy_from_user(guest->img, user_image.guest_data, guest->img_size)) {
125 ERROR("Palacios: Error loading guest data\n");
129 strncpy(guest->name, user_image.name, 127);
131 INIT_LIST_HEAD(&(guest->exts));
133 if (create_palacios_vm(guest) == -1) {
134 ERROR("Palacios: Error creating guest\n");
142 palacios_vfree(guest->img);
144 guest_map[vm_minor] = NULL;
146 palacios_free(guest);
152 case V3_FREE_GUEST: {
153 unsigned long vm_idx = arg;
154 struct v3_guest * guest;
156 if (vm_idx > MAX_VMS) {
157 ERROR("Invalid VM index: %ld\n", vm_idx);
161 guest = guest_map[vm_idx];
164 ERROR("No VM at index %ld\n",vm_idx);
168 INFO("Freeing VM (%s) (%p)\n", guest->name, guest);
170 if (free_palacios_vm(guest)<0) {
171 ERROR("Cannot free guest at index %ld\n",vm_idx);
175 guest_map[vm_idx] = NULL;
178 case V3_ADD_MEMORY: {
179 struct v3_mem_region mem;
181 memset(&mem, 0, sizeof(struct v3_mem_region));
183 if (copy_from_user(&mem, argp, sizeof(struct v3_mem_region))) {
184 ERROR("copy from user error getting mem_region...\n");
188 DEBUG("Adding %llu pages to Palacios memory\n", mem.num_pages);
190 if (add_palacios_memory(mem.base_addr, mem.num_pages) == -1) {
191 ERROR("Error adding memory to Palacios\n");
198 case V3_RESET_MEMORY: {
199 if (palacios_init_mm() == -1) {
200 ERROR("Error resetting Palacios memory\n");
207 struct global_ctrl * ctrl = get_global_ctrl(ioctl);
210 return ctrl->handler(ioctl, arg);
213 WARNING("\tUnhandled global ctrl cmd: %d\n", ioctl);
224 static struct file_operations v3_ctrl_fops = {
225 .owner = THIS_MODULE,
226 .unlocked_ioctl = v3_dev_ioctl,
227 .compat_ioctl = v3_dev_ioctl,
232 struct proc_dir_entry *palacios_get_procdir(void)
238 #define MAX_VCORES 32
240 static int read_guests(char * buf, char ** start, off_t off, int count,
241 int * eof, void * data)
246 struct v3_vm_state *s =palacios_alloc(sizeof(struct v3_vm_state)+MAX_VCORES*sizeof(struct v3_vcore_state));
249 ERROR("No space for state structure\n");
253 for(i = 0; i < MAX_VMS; i++) {
254 if (guest_map[i] != NULL) {
258 len += snprintf(buf+len, count-len,
260 guest_map[i]->name, i);
267 s->num_vcores=MAX_VCORES; // max we can handle
268 if (v3_get_state_vm(guest_map[i]->v3_ctx, s)) {
269 ERROR("Cannot get VM info\n");
275 len+=snprintf(buf+len, count-len,
276 "%s [0x%p-0x%p] %lu vcores ",
277 s->state==V3_VM_INVALID ? "INVALID" :
278 s->state==V3_VM_RUNNING ? "running" :
279 s->state==V3_VM_STOPPED ? "stopped" :
280 s->state==V3_VM_PAUSED ? "paused" :
281 s->state==V3_VM_ERROR ? "ERROR" :
282 s->state==V3_VM_SIMULATING ? "simulating" : "UNKNOWN",
283 s->mem_base_paddr, s->mem_base_paddr+s->mem_size-1,
289 for (j=0;j<s->num_vcores;j++) {
290 len+=snprintf(buf+len, count-len,
291 "[vcore %lu %s on pcore %lu %llu exits rip=0x%p %s %s %s] ",
293 s->vcore[j].state==V3_VCORE_INVALID ? "INVALID" :
294 s->vcore[j].state==V3_VCORE_RUNNING ? "running" :
295 s->vcore[j].state==V3_VCORE_STOPPED ? "stopped" : "UNKNOWN",
297 s->vcore[j].num_exits,
298 s->vcore[j].last_rip,
299 s->vcore[j].cpu_mode==V3_VCORE_CPU_REAL ? "real" :
300 s->vcore[j].cpu_mode==V3_VCORE_CPU_PROTECTED ? "protected" :
301 s->vcore[j].cpu_mode==V3_VCORE_CPU_PROTECTED_PAE ? "protectedpae" :
302 s->vcore[j].cpu_mode==V3_VCORE_CPU_LONG ? "long" :
303 s->vcore[j].cpu_mode==V3_VCORE_CPU_LONG_32_COMPAT ? "long32" :
304 s->vcore[j].cpu_mode==V3_VCORE_CPU_LONG_16_COMPAT ? "long16" : "UNKNOWN",
305 s->vcore[j].mem_mode==V3_VCORE_MEM_MODE_PHYSICAL ? "physical" :
306 s->vcore[j].mem_mode==V3_VCORE_MEM_MODE_VIRTUAL ? "virtual" : "UNKNOWN",
307 s->vcore[j].mem_state==V3_VCORE_MEM_STATE_SHADOW ? "shadow" :
308 s->vcore[j].mem_state==V3_VCORE_MEM_STATE_NESTED ? "nested" : "UNKNOWN");
324 if (s) { palacios_free(s); }
329 static int show_mem(char * buf, char ** start, off_t off, int count,
330 int * eof, void * data)
334 len = snprintf(buf,count, "%p\n", (void *)get_palacios_base_addr());
335 len += snprintf(buf+len,count-len, "%lld\n", get_palacios_num_pages());
344 static int __init v3_init(void) {
346 dev_t dev = MKDEV(0, 0); // We dynamicallly assign the major number
354 palacios_allow_devmem();
357 // Initialize Palacios
358 palacios_vmm_init(options);
361 // initialize extensions
362 init_lnx_extensions();
365 v3_class = class_create(THIS_MODULE, "vms");
366 if (IS_ERR(v3_class)) {
367 ERROR("Failed to register V3 VM device class\n");
368 return PTR_ERR(v3_class);
371 INFO("intializing V3 Control device\n");
373 ret = alloc_chrdev_region(&dev, 0, MAX_VMS + 1, "v3vee");
376 ERROR("Error registering device region for V3 devices\n");
380 v3_major_num = MAJOR(dev);
382 dev = MKDEV(v3_major_num, MAX_VMS + 1);
385 DEBUG("Creating V3 Control device: Major %d, Minor %d\n", v3_major_num, MINOR(dev));
386 cdev_init(&ctrl_dev, &v3_ctrl_fops);
387 ctrl_dev.owner = THIS_MODULE;
388 ctrl_dev.ops = &v3_ctrl_fops;
389 cdev_add(&ctrl_dev, dev, 1);
391 device_create(v3_class, NULL, dev, NULL, "v3vee");
394 ERROR("Error adding v3 control device\n");
398 dir = proc_mkdir("v3vee", NULL);
400 struct proc_dir_entry *entry;
402 entry = create_proc_read_entry("v3-guests", 0444, dir,
405 INFO("/proc/v3vee/v3-guests successfully created\n");
407 ERROR("Could not create proc entry\n");
411 entry = create_proc_read_entry("v3-mem", 0444, dir,
414 INFO("/proc/v3vee/v3-mem successfully added\n");
416 ERROR("Could not create proc entry\n");
420 ERROR("Could not create proc entry\n");
427 unregister_chrdev_region(MKDEV(v3_major_num, 0), MAX_VMS + 1);
429 class_destroy(v3_class);
435 static void __exit v3_exit(void) {
436 extern u32 pg_allocs;
443 struct v3_guest * guest;
447 /* Stop and free any running VMs */
448 for (i = 0; i < MAX_VMS; i++) {
449 if (guest_map[i] != NULL) {
450 guest = (struct v3_guest *)guest_map[i];
452 if (v3_stop_vm(guest->v3_ctx) < 0)
453 ERROR("Couldn't stop VM %d\n", i);
455 free_palacios_vm(guest);
460 dev = MKDEV(v3_major_num, MAX_VMS + 1);
462 INFO("Removing V3 Control device\n");
467 DEBUG("Palacios Mallocs = %d, Frees = %d\n", mallocs, frees);
468 DEBUG("Palacios Vmallocs = %d, Vfrees = %d\n", vmallocs, vfrees);
469 DEBUG("Palacios Page Allocs = %d, Page Frees = %d\n", pg_allocs, pg_frees);
471 unregister_chrdev_region(MKDEV(v3_major_num, 0), MAX_VMS + 1);
475 device_destroy(v3_class, dev);
476 class_destroy(v3_class);
479 deinit_lnx_extensions();
482 palacios_restore_devmem();
485 palacios_deinit_mm();
487 remove_proc_entry("v3-guests", dir);
488 remove_proc_entry("v3-mem", dir);
489 remove_proc_entry("v3vee", NULL);
491 DEBUG("Palacios Module Mallocs = %d, Frees = %d\n", mod_allocs, mod_frees);
498 module_init(v3_init);
499 module_exit(v3_exit);
503 void * trace_malloc(size_t size, gfp_t flags) {
507 addr = palacios_alloc_extended(size, flags);
513 void trace_free(const void * objp) {
515 palacios_free((void*)objp);