1#include <linux/kernel.h>
 2#include <linux/module.h>
 3#include <linux/export.h>
 4#include <linux/mm.h>
 5#include <linux/vmalloc.h>
 6#include <linux/slab.h>
 7#include <linux/sizes.h>
 8
 9#include <asm/page.h>
10#ifdef CONFIG_MIPS
11#include <asm/bootinfo.h>
12#endif
13
14struct foo {
15	unsigned int bar;
16};
17
18struct foo *foo;
19
20static int __init test_debug_virtual_init(void)
21{
22	phys_addr_t pa;
23	void *va;
24
25	va = (void *)VMALLOC_START;
26	pa = virt_to_phys(va);
27
28	pr_info("PA: %pa for VA: 0x%lx\n", &pa, (unsigned long)va);
29
30	foo = kzalloc(sizeof(*foo), GFP_KERNEL);
31	if (!foo)
32		return -ENOMEM;
33
34	pa = virt_to_phys(foo);
35	va = foo;
36	pr_info("PA: %pa for VA: 0x%lx\n", &pa, (unsigned long)va);
37
38	return 0;
39}
40module_init(test_debug_virtual_init);
41
42static void __exit test_debug_virtual_exit(void)
43{
44	kfree(foo);
45}
46module_exit(test_debug_virtual_exit);
47
48MODULE_LICENSE("GPL");
49MODULE_DESCRIPTION("Test module for CONFIG_DEBUG_VIRTUAL");