diff options
| author | Laura Abbott <lauraa@codeaurora.org> | 2014-04-05 01:30:50 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-05-21 19:07:47 +0100 |
| commit | 0ee87a5c8fb9ce32d3bc7da08e5ff198ad450e64 (patch) | |
| tree | afa5ce80a568621629211b79b1df4f6f6a934046 | |
| parent | 3162b0e7e2725f7b17ba94fa0d1cbb3defd59697 (diff) | |
arm64: Add missing Kconfig for CONFIG_STRICT_DEVMEM
The Kconfig for CONFIG_STRICT_DEVMEM is missing despite being
used in mmap.c. Add it.
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
(cherry picked from commit d253b4406df69fa7a74231769d6f6ad80dc33063)
Signed-off-by: Mark Brown <broonie@linaro.org>
Conflicts:
arch/arm64/Kconfig.debug
| -rw-r--r-- | arch/arm64/Kconfig.debug | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig.debug b/arch/arm64/Kconfig.debug index 1a6bfe954d49..e1b0c4601b3e 100644 --- a/arch/arm64/Kconfig.debug +++ b/arch/arm64/Kconfig.debug @@ -13,6 +13,20 @@ config DEBUG_STACK_USAGE Enables the display of the minimum amount of free stack which each task has ever had available in the sysrq-T output. +config STRICT_DEVMEM + bool "Filter access to /dev/mem" + depends on MMU + help + If this option is disabled, you allow userspace (root) access to all + of memory, including kernel and userspace memory. Accidental + access to this is obviously disastrous, but specific access can + be used by people debugging the kernel. + + If this option is switched on, the /dev/mem file only allows + userspace access to memory mapped peripherals. + + If in doubt, say Y. + config EARLY_PRINTK bool "Early printk support" default y |