Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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#include <linux/io.h>
9
10#include <asm/page.h>
11#ifdef CONFIG_MIPS
12#include <asm/bootinfo.h>
13#endif
14
15struct foo {
16 unsigned int bar;
17};
18
19static struct foo *foo;
20
21static int __init test_debug_virtual_init(void)
22{
23 phys_addr_t pa;
24 void *va;
25
26 va = (void *)VMALLOC_START;
27 pa = virt_to_phys(va);
28
29 pr_info("PA: %pa for VA: 0x%lx\n", &pa, (unsigned long)va);
30
31 foo = kzalloc(sizeof(*foo), GFP_KERNEL);
32 if (!foo)
33 return -ENOMEM;
34
35 pa = virt_to_phys(foo);
36 va = foo;
37 pr_info("PA: %pa for VA: 0x%lx\n", &pa, (unsigned long)va);
38
39 return 0;
40}
41module_init(test_debug_virtual_init);
42
43static void __exit test_debug_virtual_exit(void)
44{
45 kfree(foo);
46}
47module_exit(test_debug_virtual_exit);
48
49MODULE_LICENSE("GPL");
50MODULE_DESCRIPTION("Test module for CONFIG_DEBUG_VIRTUAL");