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| author | Jinbum Park <jinb.park7@gmail.com> | 2017-02-28 01:30:22 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-28 05:43:48 +0300 |
| commit | 2959a5f726f6510d6dd7c958f8877e08d0cf589c (patch) | |
| tree | 4c5490b936791a7c9373d0c1c52ccc99022194ee /mm/Kconfig.debug | |
| parent | 8d85063adbb1eb3d168e226fef96995391462c20 (diff) | |
| download | linux-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 'mm/Kconfig.debug')
| -rw-r--r-- | mm/Kconfig.debug | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/mm/Kconfig.debug b/mm/Kconfig.debug index afcc550877ff..79d0fd13b5b3 100644 --- a/mm/Kconfig.debug +++ b/mm/Kconfig.debug @@ -90,3 +90,9 @@ config DEBUG_PAGE_REF careful when enabling this feature because it adds about 30 KB to the kernel code. However the runtime performance overhead is virtually nil until the tracepoints are actually enabled. + +config DEBUG_RODATA_TEST + bool "Testcase for the marking rodata read-only" + depends on STRICT_KERNEL_RWX + ---help--- + This option enables a testcase for the setting rodata read-only. |