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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152// SPDX-License-Identifier: GPL-2.0-only#include <linux/kernel.h>#include <linux/module.h>#include <linux/export.h>#include <linux/mm.h>#include <linux/vmalloc.h>#include <linux/slab.h>#include <linux/sizes.h>#include <linux/io.h>
#include <asm/page.h>#ifdef CONFIG_MIPS#include <asm/bootinfo.h>#endif
struct foo { unsigned int bar;};
static struct foo *foo;
static int __init test_debug_virtual_init(void){ phys_addr_t pa; void *va;
va = (void *)VMALLOC_START; pa = virt_to_phys(va);
pr_info("PA: %pa for VA: 0x%lx\n", &pa, (unsigned long)va);
foo = kzalloc_obj(*foo); if (!foo) return -ENOMEM;
pa = virt_to_phys(foo); va = foo; pr_info("PA: %pa for VA: 0x%lx\n", &pa, (unsigned long)va);
return 0;}module_init(test_debug_virtual_init);
static void __exit test_debug_virtual_exit(void){ kfree(foo);}module_exit(test_debug_virtual_exit);
MODULE_LICENSE("GPL");MODULE_DESCRIPTION("Test module for CONFIG_DEBUG_VIRTUAL");