[mirror_ubuntu-bionic-kernel.git] / arch / xtensa / Kconfig.debug

# SPDX-License-Identifier: GPL-2.0
menu "Kernel hacking"

source "lib/Kconfig.debug"

config DEBUG_TLB_SANITY
	bool "Debug TLB sanity"
	depends on DEBUG_KERNEL && MMU
	help
	  Enable this to turn on TLB sanity check on each entry to userspace.
	  This check can spot missing TLB invalidation/wrong PTE permissions/
	  premature page freeing.

	  If unsure, say N.

config LD_NO_RELAX
	bool "Disable linker relaxation"
	default y
	help
	  Enable this function to disable link-time optimizations.
	  The default linker behavior is to combine identical literal
	  values to reduce code size and remove unnecessary overhead from
	  assembler-generated 'longcall' sequences.
	  Enabling this option improves the link time but increases the
	  code size, and possibly execution time.

config S32C1I_SELFTEST
	bool "Perform S32C1I instruction self-test at boot"
	default y
	help
	  Enable this option to test S32C1I instruction behavior at boot.
	  Correct operation of this instruction requires some cooperation from hardware
	  external to the processor (such as bus bridge, bus fabric, or memory controller).
	  It is easy to make wrong hardware configuration, this test should catch it early.

	  Say 'N' on stable hardware.

endmenu
Commit	Line	Data
b2441318	1	# SPDX-License-Identifier: GPL-2.0
8e1a6dd2 CZ	2	menu "Kernel hacking"
	3
	4	source "lib/Kconfig.debug"
	5
a99e07ee MF	6	config DEBUG_TLB_SANITY
a99e07ee MF	7	bool "Debug TLB sanity"
be603092	8	depends on DEBUG_KERNEL && MMU
a99e07ee MF	9	help
	10	Enable this to turn on TLB sanity check on each entry to userspace.
	11	This check can spot missing TLB invalidation/wrong PTE permissions/
	12	premature page freeing.
	13
	14	If unsure, say N.
	15
65501622 CZ	16	config LD_NO_RELAX
65501622 CZ	17	bool "Disable linker relaxation"
1f2fdbd0	18	default y
65501622 CZ	19	help
	20	Enable this function to disable link-time optimizations.
	21	The default linker behavior is to combine identical literal
	22	values to reduce code size and remove unnecessary overhead from
	23	assembler-generated 'longcall' sequences.
	24	Enabling this option improves the link time but increases the
	25	code size, and possibly execution time.
8e1a6dd2	26
00273125 MF	27	config S32C1I_SELFTEST
	28	bool "Perform S32C1I instruction self-test at boot"
	29	default y
	30	help
	31	Enable this option to test S32C1I instruction behavior at boot.
	32	Correct operation of this instruction requires some cooperation from hardware
	33	external to the processor (such as bus bridge, bus fabric, or memory controller).
	34	It is easy to make wrong hardware configuration, this test should catch it early.
	35
	36	Say 'N' on stable hardware.
	37
65501622	38	endmenu