[deliverable/linux.git] / arch / s390 / Kconfig.debug

menu "Kernel hacking"

config TRACE_IRQFLAGS_SUPPORT
	def_bool y

source "lib/Kconfig.debug"

config STRICT_DEVMEM
	def_bool y
	prompt "Filter access to /dev/mem"
	---help---
	  This option restricts access to /dev/mem.  If this option is
	  disabled, you allow userspace access to all memory, including
	  kernel and userspace memory. Accidental memory access is likely
	  to be disastrous.
	  Memory access is required for experts who want to debug the kernel.

	  If you are unsure, say Y.

config DEBUG_STRICT_USER_COPY_CHECKS
	def_bool n
	prompt "Strict user copy size checks"
	---help---
	  Enabling this option turns a certain set of sanity checks for user
	  copy operations into compile time warnings.

	  The copy_from_user() etc checks are there to help test if there
	  are sufficient security checks on the length argument of
	  the copy operation, by having gcc prove that the argument is
	  within bounds.

	  If unsure, or if you run an older (pre 4.4) gcc, say N.

endmenu
Commit	Line	Data
1da177e4 LT	1	menu "Kernel hacking"
1da177e4 LT	2
1f194a4c	3	config TRACE_IRQFLAGS_SUPPORT
6f9a3c33	4	def_bool y
1f194a4c	5
1da177e4 LT	6	source "lib/Kconfig.debug"
1da177e4 LT	7
ec6743bb HB	8	config STRICT_DEVMEM
	9	def_bool y
	10	prompt "Filter access to /dev/mem"
	11	---help---
	12	This option restricts access to /dev/mem. If this option is
	13	disabled, you allow userspace access to all memory, including
	14	kernel and userspace memory. Accidental memory access is likely
	15	to be disastrous.
	16	Memory access is required for experts who want to debug the kernel.
	17
	18	If you are unsure, say Y.
	19
1dcec254	20	config DEBUG_STRICT_USER_COPY_CHECKS
6f9a3c33 MS	21	def_bool n
6f9a3c33 MS	22	prompt "Strict user copy size checks"
1dcec254 HC	23	---help---
	24	Enabling this option turns a certain set of sanity checks for user
	25	copy operations into compile time warnings.
	26
	27	The copy_from_user() etc checks are there to help test if there
	28	are sufficient security checks on the length argument of
	29	the copy operation, by having gcc prove that the argument is
	30	within bounds.
	31
	32	If unsure, or if you run an older (pre 4.4) gcc, say N.
	33
1da177e4	34	endmenu