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| author | Laura Abbott <lauraa@codeaurora.org> | 2014-04-05 04:30:50 +0400 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2014-04-07 20:33:13 +0400 |
| commit | d253b4406df69fa7a74231769d6f6ad80dc33063 (patch) | |
| tree | d98ed01d699d74d317c232e924a2839bc0efc5e9 /arch/arm64/Kconfig.debug | |
| parent | ff268ff7f32bf5388b7422f0c0773d88add23423 (diff) | |
| download | linux-d253b4406df69fa7a74231769d6f6ad80dc33063.tar.xz | |
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>
Diffstat (limited to '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 835c559786bd..d10ec334c93b 100644 --- a/arch/arm64/Kconfig.debug +++ b/arch/arm64/Kconfig.debug @@ -6,6 +6,20 @@ config FRAME_POINTER bool default y +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 |