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authorJinbum Park <jinb.park7@gmail.com>2017-02-28 01:30:22 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-28 05:43:48 +0300
commit2959a5f726f6510d6dd7c958f8877e08d0cf589c (patch)
tree4c5490b936791a7c9373d0c1c52ccc99022194ee /init
parent8d85063adbb1eb3d168e226fef96995391462c20 (diff)
downloadlinux-2959a5f726f6510d6dd7c958f8877e08d0cf589c.tar.xz
mm: add arch-independent testcases for RODATA
This patch makes arch-independent testcases for RODATA. Both x86 and x86_64 already have testcases for RODATA, But they are arch-specific because using inline assembly directly. And cacheflush.h is not a suitable location for rodata-test related things. Since they were in cacheflush.h, If someone change the state of CONFIG_DEBUG_RODATA_TEST, It cause overhead of kernel build. To solve the above issues, write arch-independent testcases and move it to shared location. [jinb.park7@gmail.com: fix config dependency] Link: http://lkml.kernel.org/r/20170209131625.GA16954@pjb1027-Latitude-E5410 Link: http://lkml.kernel.org/r/20170129105436.GA9303@pjb1027-Latitude-E5410 Signed-off-by: Jinbum Park <jinb.park7@gmail.com> Acked-by: Kees Cook <keescook@chromium.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Laura Abbott <labbott@redhat.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Valentin Rothberg <valentinrothberg@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'init')
-rw-r--r--init/main.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/init/main.c b/init/main.c
index 6eb10ce472b9..47ea22d181ef 100644
--- a/init/main.c
+++ b/init/main.c
@@ -82,6 +82,7 @@
#include <linux/proc_ns.h>
#include <linux/io.h>
#include <linux/cache.h>
+#include <linux/rodata_test.h>
#include <asm/io.h>
#include <asm/bugs.h>
@@ -935,9 +936,10 @@ __setup("rodata=", set_debug_rodata);
#ifdef CONFIG_STRICT_KERNEL_RWX
static void mark_readonly(void)
{
- if (rodata_enabled)
+ if (rodata_enabled) {
mark_rodata_ro();
- else
+ rodata_test();
+ } else
pr_info("Kernel memory protection disabled.\n");
}
#else