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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-10-19 22:06:36 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-10-19 22:06:36 +0100 |
| commit | 809b4e00baf006a990a73329ba381d536c6fa277 (patch) | |
| tree | e949e0efd019d6f932537aba762792b07a84351c /arch/arm/Kconfig.debug | |
| parent | a0a55682b83fd5f012afadcf415b030d7424ae68 (diff) | |
| parent | 79a94c3538bda6869d7bb150b5e02dd3a72314dd (diff) | |
Merge branch 'devel-stable' into devel
Diffstat (limited to 'arch/arm/Kconfig.debug')
| -rw-r--r-- | arch/arm/Kconfig.debug | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 4dbce538fec..2fd0b99afc4 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -2,6 +2,20 @@ menu "Kernel hacking" source "lib/Kconfig.debug" +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. + # RMK wants arm kernels compiled with frame pointers or stack unwinding. # If you know what you are doing and are willing to live without stack # traces, you can get a slightly smaller kernel by setting this option to |