#include <linux/spinlock.h>
#include <linux/kthread.h>
+#include <linux/proc_fs.h>
+
+#include <palacios/vmm.h>
+
#include "palacios.h"
#include "mm.h"
#include "vm.h"
static int v3_major_num = 0;
static struct v3_guest * guest_map[MAX_VMS] = {[0 ... MAX_VMS - 1] = 0};
+static struct proc_dir_entry *dir = 0;
struct class * v3_class = NULL;
static struct cdev ctrl_dev;
static long v3_dev_ioctl(struct file * filp,
unsigned int ioctl, unsigned long arg) {
void __user * argp = (void __user *)arg;
- printk("V3 IOCTL %d\n", ioctl);
+ DEBUG("V3 IOCTL %d\n", ioctl);
switch (ioctl) {
case V3_CREATE_GUEST:{
int vm_minor = 0;
struct v3_guest_img user_image;
- struct v3_guest * guest = kmalloc(sizeof(struct v3_guest), GFP_KERNEL);
+ struct v3_guest * guest = palacios_alloc(sizeof(struct v3_guest));
if (IS_ERR(guest)) {
- printk("Palacios: Error allocating Kernel guest_image\n");
+ ERROR("Palacios: Error allocating Kernel guest_image\n");
return -EFAULT;
}
memset(guest, 0, sizeof(struct v3_guest));
- printk("Palacios: Creating V3 Guest...\n");
+ INFO("Palacios: Creating V3 Guest...\n");
vm_minor = register_vm(guest);
if (vm_minor == -1) {
- printk("Palacios Error: Too many VMs are currently running\n");
- return -EFAULT;
+ ERROR("Palacios Error: Too many VMs are currently running\n");
+ goto out_err;
}
guest->vm_dev = MKDEV(v3_major_num, vm_minor);
if (copy_from_user(&user_image, argp, sizeof(struct v3_guest_img))) {
- printk("Palacios Error: copy from user error getting guest image...\n");
- return -EFAULT;
+ ERROR("Palacios Error: copy from user error getting guest image...\n");
+ goto out_err1;
}
guest->img_size = user_image.size;
- printk("Palacios: Allocating kernel memory for guest image (%llu bytes)\n", user_image.size);
+ DEBUG("Palacios: Allocating kernel memory for guest image (%llu bytes)\n", user_image.size);
guest->img = vmalloc(guest->img_size);
if (IS_ERR(guest->img)) {
- printk("Palacios Error: Could not allocate space for guest image\n");
- return -EFAULT;
+ ERROR("Palacios Error: Could not allocate space for guest image\n");
+ goto out_err1;
}
if (copy_from_user(guest->img, user_image.guest_data, guest->img_size)) {
- printk("Palacios: Error loading guest data\n");
- return -EFAULT;
+ ERROR("Palacios: Error loading guest data\n");
+ goto out_err2;
}
strncpy(guest->name, user_image.name, 127);
INIT_LIST_HEAD(&(guest->exts));
if (create_palacios_vm(guest) == -1) {
- printk("Palacios: Error creating guest\n");
- return -EFAULT;
+ ERROR("Palacios: Error creating guest\n");
+ goto out_err2;
}
return vm_minor;
+
+
+out_err2:
+ vfree(guest->img);
+out_err1:
+ guest_map[vm_minor] = NULL;
+out_err:
+ palacios_free(guest);
+
+ return -1;
+
break;
}
case V3_FREE_GUEST: {
unsigned long vm_idx = arg;
struct v3_guest * guest = guest_map[vm_idx];
- printk("Freeing VM (%s) (%p)\n", guest->name, guest);
+ if (!guest) {
+ ERROR("No VM at index %ld\n",vm_idx);
+ return -1;
+ }
+
+ INFO("Freeing VM (%s) (%p)\n", guest->name, guest);
free_palacios_vm(guest);
guest_map[vm_idx] = NULL;
memset(&mem, 0, sizeof(struct v3_mem_region));
if (copy_from_user(&mem, argp, sizeof(struct v3_mem_region))) {
- printk("copy from user error getting mem_region...\n");
+ ERROR("copy from user error getting mem_region...\n");
return -EFAULT;
}
- printk("Adding %llu pages to Palacios memory\n", mem.num_pages);
+ DEBUG("Adding %llu pages to Palacios memory\n", mem.num_pages);
if (add_palacios_memory(mem.base_addr, mem.num_pages) == -1) {
- printk("Error adding memory to Palacios\n");
+ ERROR("Error adding memory to Palacios\n");
return -EFAULT;
}
break;
}
- default:
- printk("\tUnhandled\n");
+
+ default: {
+ struct global_ctrl * ctrl = get_global_ctrl(ioctl);
+
+ if (ctrl) {
+ return ctrl->handler(ioctl, arg);
+ }
+
+ WARNING("\tUnhandled global ctrl cmd: %d\n", ioctl);
+
return -EINVAL;
+ }
}
return 0;
+struct proc_dir_entry *palacios_get_procdir(void)
+{
+ return dir;
+}
+
+static int read_guests(char * buf, char ** start, off_t off, int count,
+ int * eof, void * data)
+{
+ int len = 0;
+ unsigned int i = 0;
+
+ for(i = 0; i < MAX_VMS; i++) {
+ if (guest_map[i] != NULL) {
+ if (len<count) {
+ len += snprintf(buf+len, count-len,
+ "%s\t/dev/v3-vm%d\n",
+ guest_map[i]->name, i);
+ }
+ }
+ }
+
+ return len;
+}
+
+static int show_mem(char * buf, char ** start, off_t off, int count,
+ int * eof, void * data)
+{
+ int len = 0;
+
+ len = snprintf(buf,count, "%p\n", (void *)get_palacios_base_addr());
+ len += snprintf(buf+len,count-len, "%lld\n", get_palacios_num_pages());
+
+ return len;
+}
+
+
static int __init v3_init(void) {
dev_t dev = MKDEV(0, 0); // We dynamicallly assign the major number
int ret = 0;
v3_class = class_create(THIS_MODULE, "vms");
if (IS_ERR(v3_class)) {
- printk("Failed to register V3 VM device class\n");
+ ERROR("Failed to register V3 VM device class\n");
return PTR_ERR(v3_class);
}
- printk("intializing V3 Control device\n");
+ INFO("intializing V3 Control device\n");
ret = alloc_chrdev_region(&dev, 0, MAX_VMS + 1, "v3vee");
if (ret < 0) {
- printk("Error registering device region for V3 devices\n");
+ ERROR("Error registering device region for V3 devices\n");
goto failure2;
}
dev = MKDEV(v3_major_num, MAX_VMS + 1);
- printk("Creating V3 Control device: Major %d, Minor %d\n", v3_major_num, MINOR(dev));
+ DEBUG("Creating V3 Control device: Major %d, Minor %d\n", v3_major_num, MINOR(dev));
cdev_init(&ctrl_dev, &v3_ctrl_fops);
ctrl_dev.owner = THIS_MODULE;
ctrl_dev.ops = &v3_ctrl_fops;
device_create(v3_class, NULL, dev, NULL, "v3vee");
if (ret != 0) {
- printk("Error adding v3 control device\n");
+ ERROR("Error adding v3 control device\n");
goto failure1;
}
-
-
+ dir = proc_mkdir("v3vee", NULL);
+ if(dir) {
+ struct proc_dir_entry *entry;
+
+ entry = create_proc_read_entry("v3-guests", 0444, dir,
+ read_guests, NULL);
+ if (entry) {
+ INFO("/proc/v3vee/v3-guests successfully created\n");
+ } else {
+ ERROR("Could not create proc entry\n");
+ goto failure1;
+ }
+
+ entry = create_proc_read_entry("v3-mem", 0444, dir,
+ show_mem, NULL);
+ if (entry) {
+ INFO("/proc/v3vee/v3-mem successfully added\n");
+ } else {
+ ERROR("Could not create proc entry\n");
+ goto failure1;
+ }
+ } else {
+ ERROR("Could not create proc entry\n");
+ goto failure1;
+ }
+
return 0;
failure1:
extern u32 pg_frees;
extern u32 mallocs;
extern u32 frees;
+ int i = 0;
+ struct v3_guest * guest;
+ dev_t dev;
- // should probably try to stop any guests
+ /* Stop and free any running VMs */
+ for (i = 0; i < MAX_VMS; i++) {
+ if (guest_map[i] != NULL) {
+ guest = (struct v3_guest *)guest_map[i];
+ if (v3_stop_vm(guest->v3_ctx) < 0)
+ ERROR("Couldn't stop VM %d\n", i);
+ free_palacios_vm(guest);
+ guest_map[i] = NULL;
+ }
+ }
- dev_t dev = MKDEV(v3_major_num, MAX_VMS + 1);
+ dev = MKDEV(v3_major_num, MAX_VMS + 1);
- printk("Removing V3 Control device\n");
+ INFO("Removing V3 Control device\n");
palacios_vmm_exit();
- printk("Palacios Mallocs = %d, Frees = %d\n", mallocs, frees);
- printk("Palacios Page Allocs = %d, Page Frees = %d\n", pg_allocs, pg_frees);
+ DEBUG("Palacios Mallocs = %d, Frees = %d\n", mallocs, frees);
+ DEBUG("Palacios Page Allocs = %d, Page Frees = %d\n", pg_allocs, pg_frees);
unregister_chrdev_region(MKDEV(v3_major_num, 0), MAX_VMS + 1);
palacios_deinit_mm();
- printk("Palacios Module Mallocs = %d, Frees = %d\n", mod_allocs, mod_frees);
+ remove_proc_entry("v3-guests", dir);
+ remove_proc_entry("v3-mem", dir);
+ remove_proc_entry("v3vee", NULL);
+
+ DEBUG("Palacios Module Mallocs = %d, Frees = %d\n", mod_allocs, mod_frees);
}
