X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=arch%2Farm64%2FKconfig.debug;h=d10ec334c93b4a3f8db194e1a929c711e5dbcf90;hb=96c2ac4cc5beb9c1e3798cb40cf74af093ec60b4;hp=835c559786bda923fe0cb8616b3031932a86bb21;hpb=e23c34bb41da65f354fb7eee04300c56ee48f60c;p=karo-tx-linux.git

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