diff --git a/README.md b/README.md
index 8da6509..a91af0f 100644
--- a/README.md
+++ b/README.md
@@ -136,6 +136,8 @@ However, when you do:
 
 it gets overwritten by a fresh filesystem and you lose all changes.
 
+Using text mode is another workaround if you don't need GUI features.
+
 ## Text mode
 
 Show serial output of QEMU directly on the current terminal, without opening a QEMU window:
diff --git a/kernel_module/virt_to_phys.c b/kernel_module/virt_to_phys.c
index 0a7b234..6b620fb 100644
--- a/kernel_module/virt_to_phys.c
+++ b/kernel_module/virt_to_phys.c
@@ -56,7 +56,7 @@ static const struct file_operations fops = {
 
 static int myinit(void)
 {
- 	i = kmalloc(sizeof(loff_t), GFP_KERNEL);
+ 	i = kmalloc(sizeof(i), GFP_KERNEL);
  	*i = 0x12345678;
 	debugfs_file = debugfs_create_file(
 		"lkmc_virt_to_phys", S_IRUSR, NULL, NULL, &fops);