1 // SPDX-License-Identifier: GPL-2.0-only
2 #include <linux/kernel.h>
3 #include <linux/module.h>
4 #include <linux/export.h>
5 #include <linux/mm.h>
6 #include <linux/vmalloc.h>
7 #include <linux/slab.h>
8 #include <linux/sizes.h>
9 #include <linux/io.h>
10
11 #include <asm/page.h>
12 #ifdef CONFIG_MIPS
13 #include <asm/bootinfo.h>
14 #endif
15
16 struct foo {
17 unsigned int bar;
18 };
19
20 static struct foo *foo;
21
22 static int __init test_debug_virtual_init(void)
23 {
24 phys_addr_t pa;
25 void *va;
26
27 va = (void *)VMALLOC_START;
28 pa = virt_to_phys(va);
29
30 pr_info("PA: %pa for VA: 0x%lx\n", &pa, (unsigned long)va);
31
32 foo = kzalloc(sizeof(*foo), GFP_KERNEL);
33 if (!foo)
34 return -ENOMEM;
35
36 pa = virt_to_phys(foo);
37 va = foo;
38 pr_info("PA: %pa for VA: 0x%lx\n", &pa, (unsigned long)va);
39
40 return 0;
41 }
42 module_init(test_debug_virtual_init);
43
44 static void __exit test_debug_virtual_exit(void)
45 {
46 kfree(foo);
47 }
48 module_exit(test_debug_virtual_exit);
49
50 MODULE_LICENSE("GPL");
51 MODULE_DESCRIPTION("Test module for CONFIG_DEBUG_VIRTUAL");
52
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