1 # SPDX-License-Identifier: GPL-2.0 !! 1 menu "Kernel hacking"
2 2
3 config DEBUG_TLB_SANITY !! 3 source "lib/Kconfig.debug"
4 bool "Debug TLB sanity" <<
5 depends on DEBUG_KERNEL && MMU <<
6 help <<
7 Enable this to turn on TLB sanity ch <<
8 This check can spot missing TLB inva <<
9 premature page freeing. <<
10 <<
11 If unsure, say N. <<
12 4
13 config LD_NO_RELAX !! 5 config EARLY_PRINTK
14 bool "Disable linker relaxation" !! 6 bool
>> 7 depends on ALPHA_GENERIC || ALPHA_SRM
15 default y 8 default y
16 help <<
17 Enable this function to disable link <<
18 The default linker behavior is to co <<
19 values to reduce code size and remov <<
20 assembler-generated 'longcall' seque <<
21 Enabling this option improves the li <<
22 code size, and possibly execution ti <<
23 9
24 config S32C1I_SELFTEST !! 10 config ALPHA_LEGACY_START_ADDRESS
25 bool "Perform S32C1I instruction self- !! 11 bool "Legacy kernel start address"
>> 12 depends on ALPHA_GENERIC
>> 13 default n
>> 14 ---help---
>> 15 The 2.4 kernel changed the kernel start address from 0x310000
>> 16 to 0x810000 to make room for the Wildfire's larger SRM console.
>> 17 Recent consoles on Titan and Marvel machines also require the
>> 18 extra room.
>> 19
>> 20 If you're using aboot 0.7 or later, the bootloader will examine the
>> 21 ELF headers to determine where to transfer control. Unfortunately,
>> 22 most older bootloaders -- APB or MILO -- hardcoded the kernel start
>> 23 address rather than examining the ELF headers, and the result is a
>> 24 hard lockup.
>> 25
>> 26 Say Y if you have a broken bootloader. Say N if you do not, or if
>> 27 you wish to run on Wildfire, Titan, or Marvel.
>> 28
>> 29 config ALPHA_LEGACY_START_ADDRESS
>> 30 bool
>> 31 depends on !ALPHA_GENERIC && !ALPHA_TITAN && !ALPHA_MARVEL && !ALPHA_WILDFIRE
26 default y 32 default y
27 help <<
28 Enable this option to test S32C1I in <<
29 Correct operation of this instructio <<
30 external to the processor (such as b <<
31 It is easy to make wrong hardware co <<
32 <<
33 Say 'N' on stable hardware. <<
34 <<
35 config PRINT_STACK_DEPTH <<
36 int "Stack depth to print" if DEBUG_KE <<
37 default 64 <<
38 help <<
39 This option allows you to set the st <<
40 prints in stack traces. <<
41 33
42 config PRINT_USER_CODE_ON_UNHANDLED_EXCEPTION !! 34 config MATHEMU
43 bool "Dump user code around unhandled !! 35 tristate "Kernel FP software completion" if DEBUG_KERNEL && !SMP
>> 36 default y if !DEBUG_KERNEL || SMP
44 help 37 help
45 Enable this option to display user c !! 38 This option is required for IEEE compliant floating point arithmetic
46 exception (starting at address align !! 39 on the Alpha. The only time you would ever not say Y is to say M in
47 This may simplify finding faulting c !! 40 order to debug the code. Say Y unless you know what you are doing.
48 debug facilities. !! 41
>> 42 endmenu
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