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