2 #include "linux-exts.h"
5 * This is a place holder to ensure that the _lnx_exts section gets created by gcc
9 static struct {} null_ext __attribute__((__used__)) \
10 __attribute__((unused, __section__ ("_lnx_exts"), \
11 aligned(sizeof(void *))));
14 struct linux_ext * impl;
16 struct list_head node;
21 int init_vm_extensions(struct v3_guest * guest) {
22 extern struct linux_ext * __start__lnx_exts[];
23 extern struct linux_ext * __stop__lnx_exts[];
24 struct linux_ext * ext_impl = __start__lnx_exts[0];
27 while (ext_impl != __stop__lnx_exts[0]) {
28 struct vm_ext * ext = NULL;
30 if (ext_impl->guest_init == NULL) {
31 // We can have global extensions without per guest state
35 printk("Registering Linux Extension (%s)\n", ext_impl->name);
37 ext = kmalloc(sizeof(struct vm_ext), GFP_KERNEL);
40 printk("Error allocating VM extension (%s)\n", ext_impl->name);
46 ext_impl->guest_init(guest, &(ext->vm_data));
48 list_add(&(ext->node), &(guest->exts));
50 ext_impl = __start__lnx_exts[++i];
57 int deinit_vm_extensions(struct v3_guest * guest) {
58 struct vm_ext * ext = NULL;
59 struct vm_ext * tmp = NULL;
61 list_for_each_entry_safe(ext, tmp, &(guest->exts), node) {
62 if (ext->impl->guest_deinit) {
63 ext->impl->guest_deinit(guest, ext->vm_data);
65 printk("WARNING: Extension %s, does not have a guest deinit function\n", ext->impl->name);
68 list_del(&(ext->node));
75 int init_lnx_extensions( void ) {
76 extern struct linux_ext * __start__lnx_exts[];
77 extern struct linux_ext * __stop__lnx_exts[];
78 struct linux_ext * tmp_ext = __start__lnx_exts[0];
81 while (tmp_ext != __stop__lnx_exts[0]) {
83 printk("tmp_ext=%p\n", tmp_ext);
85 if (tmp_ext->init != NULL) {
86 printk("Registering Linux Extension (%s)\n", tmp_ext->name);
90 tmp_ext = __start__lnx_exts[++i];
97 int deinit_lnx_extensions( void ) {
98 extern struct linux_ext * __start__lnx_exts[];
99 extern struct linux_ext * __stop__lnx_exts[];
100 struct linux_ext * tmp_ext = __start__lnx_exts[0];
103 while (tmp_ext != __stop__lnx_exts[0]) {
104 printk("Cleaning up Linux Extension (%s)\n", tmp_ext->name);
105 if (tmp_ext->deinit != NULL) {
108 printk("WARNING: Extension %s does not have a global deinit function\n", tmp_ext->name);
111 tmp_ext = __start__lnx_exts[++i];