From d253b4406df69fa7a74231769d6f6ad80dc33063 Mon Sep 17 00:00:00 2001 From: Laura Abbott Date: Sat, 5 Apr 2014 01:30:50 +0100 Subject: 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 Signed-off-by: Catalin Marinas --- arch/arm64/Kconfig.debug | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'arch/arm64/Kconfig.debug') 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 -- cgit v1.2.3-59-g8ed1b