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51 lines
981 B
51 lines
981 B
// SPDX-License-Identifier: GPL-2.0-only |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/export.h> |
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#include <linux/mm.h> |
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#include <linux/vmalloc.h> |
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#include <linux/slab.h> |
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#include <linux/sizes.h> |
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#include <linux/io.h> |
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#include <asm/page.h> |
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#ifdef CONFIG_MIPS |
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#include <asm/bootinfo.h> |
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#endif |
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struct foo { |
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unsigned int bar; |
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}; |
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static struct foo *foo; |
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static int __init test_debug_virtual_init(void) |
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{ |
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phys_addr_t pa; |
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void *va; |
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va = (void *)VMALLOC_START; |
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pa = virt_to_phys(va); |
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pr_info("PA: %pa for VA: 0x%lx\n", &pa, (unsigned long)va); |
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foo = kzalloc(sizeof(*foo), GFP_KERNEL); |
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if (!foo) |
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return -ENOMEM; |
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pa = virt_to_phys(foo); |
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va = foo; |
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pr_info("PA: %pa for VA: 0x%lx\n", &pa, (unsigned long)va); |
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return 0; |
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} |
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module_init(test_debug_virtual_init); |
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static void __exit test_debug_virtual_exit(void) |
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{ |
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kfree(foo); |
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} |
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module_exit(test_debug_virtual_exit); |
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MODULE_LICENSE("GPL"); |
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MODULE_DESCRIPTION("Test module for CONFIG_DEBUG_VIRTUAL");
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