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authorLaura Abbott <lauraa@codeaurora.org>2014-04-05 00:30:50 (GMT)
committerChanho Park <chanho61.park@samsung.com>2014-04-16 12:36:52 (GMT)
commit129ae0f364587d2a6b17db3f17910243e8a98912 (patch)
tree93857b0801a68b10e40983efa8feb0d7a359df28
parent947f2b1c543d62cfc876c5b1ce8e13d08181adf8 (diff)
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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>
-rw-r--r--arch/arm64/Kconfig.debug14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig.debug b/arch/arm64/Kconfig.debug
index 835c559..d10ec33 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