x86: mark the .rodata section also NX
The .rodata section shouldn't just be read-only,
but also non-executable. This is free since we've broken
up the 2MB page already anyway.
also update test_nx to check for this.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/test_nx.c b/arch/x86/kernel/test_nx.c
index 36c100c..10b8a6f 100644
--- a/arch/x86/kernel/test_nx.c
+++ b/arch/x86/kernel/test_nx.c
@@ -139,7 +139,6 @@
* Until then, don't run them to avoid too many people getting scared
* by the error message
*/
-#if 0
#ifdef CONFIG_DEBUG_RODATA
/* Test 3: Check if the .rodata section is executable */
@@ -152,6 +151,7 @@
}
#endif
+#if 0
/* Test 4: Check if the .data section of a module is executable */
if (test_address(&test_data)) {
printk(KERN_ERR "test_nx: .data section is executable\n");