diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index b1054d6a14ab..2fad1a5c377a 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -3308,6 +3308,7 @@ static int next_segment(unsigned long len, int offset)
 		return len;
 }
 
+/* Copy @len bytes from guest memory at '(@gfn * PAGE_SIZE) + @offset' to @data */
 static int __kvm_read_guest_page(struct kvm_memory_slot *slot, gfn_t gfn,
 				 void *data, int offset, int len)
 {
@@ -3409,6 +3410,7 @@ int kvm_vcpu_read_guest_atomic(struct kvm_vcpu *vcpu, gpa_t gpa,
 }
 EXPORT_SYMBOL_GPL(kvm_vcpu_read_guest_atomic);
 
+/* Copy @len bytes from @data into guest memory at '(@gfn * PAGE_SIZE) + @offset' */
 static int __kvm_write_guest_page(struct kvm *kvm,
 				  struct kvm_memory_slot *memslot, gfn_t gfn,
 			          const void *data, int offset, int len)