--- /dev/null
+
+#include "linux-exts.h"
+
+/*
+ * This is a place holder to ensure that the _lnx_exts section gets created by gcc
+ */
+static struct {} null_ext __attribute__((__used__)) \
+ __attribute__((unused, __section__ ("_lnx_exts"), \
+ aligned(sizeof(void *))));
+
+
+
+
+int init_vm_extensions(struct v3_guest * guest) {
+ extern struct linux_ext * __start__lnx_exts;
+ extern struct linux_ext * __stop__lnx_exts;
+ struct linux_ext * tmp_ext = __start__lnx_exts;
+ int i = 0;
+
+ while (tmp_ext != __stop__lnx_exts) {
+ printk("Registering Linux Extension (%s)\n", tmp_ext->name);
+ tmp_ext->init();
+
+ tmp_ext = &(__start__lnx_exts[++i]);
+ }
+
+ return 0;
+
+}
+
+int init_lnx_extensions( void ) {
+ extern struct linux_ext * __start__lnx_exts;
+ extern struct linux_ext * __stop__lnx_exts;
+ struct linux_ext * tmp_ext = __start__lnx_exts;
+ int i = 0;
+
+ while (tmp_ext != __stop__lnx_exts) {
+ printk("Registering Linux Extension (%s)\n", tmp_ext->name);
+ tmp_ext->init();
+
+ tmp_ext = &(__start__lnx_exts[++i]);
+ }
+
+ return 0;
+}
+
+
+int deinit_lnx_extensions( void ) {
+ extern struct linux_ext * __start__lnx_exts;
+ extern struct linux_ext * __stop__lnx_exts;
+ struct linux_ext * tmp_ext = __start__lnx_exts;
+ int i = 0;
+
+ while (tmp_ext != __stop__lnx_exts) {
+ printk("Cleaning up Linux Extension (%s)\n", tmp_ext->name);
+ tmp_ext->deinit();
+
+ tmp_ext = &(__start__lnx_exts[++i]);
+ }
+
+ return 0;
+}
--- /dev/null
+#include "palacios.h"
+
+
+int add_mod_cmd(struct v3_guest * guest, unsigned int cmd,
+ int (*handler)(struct v3_guest * guest,
+ unsigned int cmd, unsigned long arg));
+
+
+struct linux_ext {
+ char * name;
+ int (*init)( void );
+ int (*deinit)( void );
+ int (*guest_init)(struct v3_guest * guest, void ** priv_data);
+ int (*guest_deinit)(struct v3_guest * guest, void * priv_data);
+} __attribute__((packed));
+
+
+
+int init_lnx_extensions( void );
+int deinit_lnx_extensions( void );
+
+
+
+#define register_extension(ext) \
+ static struct linux_ext * _lnx_ext \
+ __attribute__((used)) \
+ __attribute__((unused, __section("_lnx_exts"), \
+ aligned(sizeof(void *)))) \
+ = ext;
#include <linux/smp_lock.h>
#include <linux/file.h>
#include <linux/spinlock.h>
-
+#include <linux/rbtree.h>
#include <palacios/vmm.h>
#include "palacios.h"
#include "palacios-vm.h"
+
+struct vm_ctrl {
+ unsigned int cmd;
+
+ int (*handler)(struct v3_guest * guest,
+ unsigned int cmd, unsigned long arg,
+ void * priv_data);
+
+ void * priv_data;
+
+ struct rb_node tree_node;
+};
+
+
+static inline struct vm_ctrl * __insert_ctrl(struct v3_guest * vm,
+ struct vm_ctrl * ctrl) {
+ struct rb_node ** p = &(vm->vm_ctrls.rb_node);
+ struct rb_node * parent = NULL;
+ struct vm_ctrl * tmp_ctrl = NULL;
+
+ while (*p) {
+ parent = *p;
+ tmp_ctrl = rb_entry(parent, struct vm_ctrl, tree_node);
+
+ if (ctrl->cmd < tmp_ctrl->cmd) {
+ p = &(*p)->rb_left;
+ } else if (ctrl->cmd > tmp_ctrl->cmd) {
+ p = &(*p)->rb_right;
+ } else {
+ return tmp_ctrl;
+ }
+ }
+
+ rb_link_node(&(ctrl->tree_node), parent, p);
+
+ return NULL;
+}
+
+
+
+int add_guest_ctrl(struct v3_guest * guest, unsigned int cmd,
+ int (*handler)(struct v3_guest * guest,
+ unsigned int cmd, unsigned long arg,
+ void * priv_data),
+ void * priv_data) {
+ struct vm_ctrl * ctrl = kmalloc(sizeof(struct vm_ctrl), GFP_KERNEL);
+
+ if (ctrl == NULL) {
+ printk("Error: Could not allocate vm ctrl %d\n", cmd);
+ return -1;
+ }
+
+ ctrl->cmd = cmd;
+ ctrl->handler = handler;
+ ctrl->priv_data = priv_data;
+
+ if (__insert_ctrl(guest, ctrl) != NULL) {
+ printk("Could not insert guest ctrl %d\n", cmd);
+ kfree(ctrl);
+ return -1;
+ }
+
+ rb_insert_color(&(ctrl->tree_node), &(guest->vm_ctrls));
+
+ return 0;
+}
+
+
+static struct vm_ctrl * get_ctrl(struct v3_guest * guest, unsigned int cmd) {
+ struct rb_node * n = guest->vm_ctrls.rb_node;
+ struct vm_ctrl * ctrl = NULL;
+
+ while (n) {
+ ctrl = rb_entry(n, struct vm_ctrl, tree_node);
+
+ if (cmd < ctrl->cmd) {
+ n = n->rb_left;
+ } else if (cmd > ctrl->cmd) {
+ n = n->rb_right;
+ } else {
+ return ctrl;
+ }
+ }
+
+ return NULL;
+}
+
+
#ifdef V3_CONFIG_STREAM
#include "palacios-stream.h"
#endif
break;
- default:
- printk("\tUnhandled\n");
+ default: {
+ struct vm_ctrl * ctrl = get_ctrl(guest, ioctl);
+
+ if (ctrl) {
+ return ctrl->handler(guest, ioctl, arg, ctrl->priv_data);
+ }
+
+
+ printk("\tUnhandled ctrl cmd: %d\n", ioctl);
return -EINVAL;
+ }
}
return 0;
return -1;
}
+ // init linux extensions
+#ifdef V3_CONFIG_EXT_INSPECTOR
+ inspect_vm(guest);
+#endif
+
printk("Creating VM device: Major %d, Minor %d\n", MAJOR(guest->vm_dev), MINOR(guest->vm_dev));
cdev_init(&(guest->cdev), &v3_vm_fops);
printk("palacios: launching vm\n");
-#ifdef V3_CONFIG_EXT_INSPECTOR
- inspect_vm(guest);
-#endif
+
if (v3_start_vm(guest->v3_ctx, 0xffffffff) < 0) {