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authorLaura Abbott <labbott@redhat.com>2017-02-07 03:31:57 +0300
committerKees Cook <keescook@chromium.org>2017-02-07 23:32:52 +0300
commitad21fc4faa2a1f919bac1073b885df9310dbc581 (patch)
tree0e72a0b209f7e84daf6a131bdbc673cd60715037 /arch/arm/mm
parent0c744ea4f77d72b3dcebb7a8f2684633ec79be88 (diff)
downloadlinux-ad21fc4faa2a1f919bac1073b885df9310dbc581.tar.xz
arch: Move CONFIG_DEBUG_RODATA and CONFIG_SET_MODULE_RONX to be common
There are multiple architectures that support CONFIG_DEBUG_RODATA and CONFIG_SET_MODULE_RONX. These options also now have the ability to be turned off at runtime. Move these to an architecture independent location and make these options def_bool y for almost all of those arches. Signed-off-by: Laura Abbott <labbott@redhat.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'arch/arm/mm')
-rw-r--r--arch/arm/mm/Kconfig12
1 files changed, 0 insertions, 12 deletions
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index f68e8ec29447..419a0355d4e4 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -1051,18 +1051,6 @@ config ARCH_SUPPORTS_BIG_ENDIAN
This option specifies the architecture can support big endian
operation.
-config DEBUG_RODATA
- bool "Make kernel text and rodata read-only"
- depends on MMU && !XIP_KERNEL
- default y if CPU_V7
- help
- If this is set, kernel text and rodata memory will be made
- read-only, and non-text kernel memory will be made non-executable.
- The tradeoff is that each region is padded to section-size (1MiB)
- boundaries (because their permissions are different and splitting
- the 1M pages into 4K ones causes TLB performance problems), which
- can waste memory.
-
config DEBUG_ALIGN_RODATA
bool "Make rodata strictly non-executable"
depends on DEBUG_RODATA