add: documentation: memory

src/kernel.c

@@ -36,6 +36,11 @@ void kernel_main(void)
 	        "I see no way to confuse an array of 256 seg:off pairs with a "
 	        "complex 8*unknown quantity -byte descriptor table. -- Troy "
 	        "Martin 03:50, 22 March 2009 (UTC)\n");
+	while (true) {
+		void *ptr = alloc_pages(4096);
+		memset(ptr, ~0, 4096);
+		PRINT_PTR(ptr);
+	}
 	/* int i = 0; */
 	/* while (vmalloc(10)) */
 	/* 	; */