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virt_to_phys_user

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Ciro Santilli
2017-07-30 23:31:22 +01:00
parent 7d6449d47b
commit 25f9913e0c
5 changed files with 155 additions and 67 deletions
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2
kernel_module/mmap.c
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@@ -74,7 +74,7 @@ static int open(struct inode *inode, struct file *filp)
pr_info("open\n");
info = kmalloc(sizeof(struct mmap_info), GFP_KERNEL);
pr_info("virt_to_phys = 0x%llx\n", (unsigned long long)virt_to_phys((void *)info->data));
pr_info("virt_to_phys = 0x%llx\n", (unsigned long long)virt_to_phys((void *)info));
info->data = (char *)get_zeroed_page(GFP_KERNEL);
memcpy(info->data, "asdf", BUFFER_SIZE);
filp->private_data = info;