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
16struct foo {
17	unsigned int bar;
18};
19
20static struct foo *foo;
21
22static 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}
42module_init(test_debug_virtual_init);
43
44static void __exit test_debug_virtual_exit(void)
45{
46	kfree(foo);
47}
48module_exit(test_debug_virtual_exit);
49
50MODULE_LICENSE("GPL");
51MODULE_DESCRIPTION("Test module for CONFIG_DEBUG_VIRTUAL");

 
 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");