linux-kernel - [RFC PATCH 3/4] module: Use linux/set

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Message-Id: <1498717781-29151-3-git-send-email-mpe@ellerman.id.au>
Date:   Thu, 29 Jun 2017 16:29:40 +1000
From:   Michael Ellerman <mpe@...erman.id.au>
To:     kernel-hardening@...ts.openwall.com
Cc:     keescook@...omium.org, akpm@...ux-foundation.org,
        linux-kernel@...r.kernel.org, labbott@...hat.com
Subject: [RFC PATCH 3/4] module: Use linux/set_memory.h

This header always exists, so doesn't require an ifdef around its
inclusion. When CONFIG_ARCH_HAS_SET_MEMORY=y it includes the asm header,
otherwise it provides empty versions of the set_memory_xx() routines.

The usages of set_memory_xx() are still guarded by CONFIG_STRICT_MODULE_RWX.

Signed-off-by: Michael Ellerman <mpe@...erman.id.au>
---
 kernel/module.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/kernel/module.c b/kernel/module.c
index d0a723ebe75c..e7696b25db30 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -49,9 +49,7 @@
 #include <linux/rculist.h>
 #include <linux/uaccess.h>
 #include <asm/cacheflush.h>
-#ifdef CONFIG_STRICT_MODULE_RWX
-#include <asm/set_memory.h>
-#endif
+#include <linux/set_memory.h>
 #include <asm/mmu_context.h>
 #include <linux/license.h>
 #include <asm/sections.h>
-- 
2.7.4