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-rw-r--r--arch/x86/Kconfig.debug20
1 files changed, 12 insertions, 8 deletions
diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
index ac1e31ba4795..18363374d51a 100644
--- a/arch/x86/Kconfig.debug
+++ b/arch/x86/Kconfig.debug
@@ -6,15 +6,19 @@ config TRACE_IRQFLAGS_SUPPORT
6source "lib/Kconfig.debug" 6source "lib/Kconfig.debug"
7 7
8config NONPROMISC_DEVMEM 8config NONPROMISC_DEVMEM
9 bool "Disable promiscuous /dev/mem" 9 bool "Filter access to /dev/mem"
10 help 10 help
11 The /dev/mem file by default only allows userspace access to PCI 11 If this option is left off, you allow userspace access to all
12 space and the BIOS code and data regions. This is sufficient for 12 of memory, including kernel and userspace memory. Accidental
13 dosemu and X and all common users of /dev/mem. With this config 13 access to this is obviously disastrous, but specific access can
14 option, you allow userspace access to all of memory, including 14 be used by people debugging the kernel.
15 kernel and userspace memory. Accidental access to this is 15
16 obviously disasterous, but specific access can be used by people 16 If this option is switched on, the /dev/mem file only allows
17 debugging the kernel. 17 userspace access to PCI space and the BIOS code and data regions.
18 This is sufficient for dosemu and X and all common users of
19 /dev/mem.
20
21 If in doubt, say Y.
18 22
19config EARLY_PRINTK 23config EARLY_PRINTK
20 bool "Early printk" if EMBEDDED 24 bool "Early printk" if EMBEDDED