162306a36Sopenharmony_ci# SPDX-License-Identifier: GPL-2.0 262306a36Sopenharmony_ci 362306a36Sopenharmony_ciconfig DEBUG_TLB_SANITY 462306a36Sopenharmony_ci bool "Debug TLB sanity" 562306a36Sopenharmony_ci depends on DEBUG_KERNEL && MMU 662306a36Sopenharmony_ci help 762306a36Sopenharmony_ci Enable this to turn on TLB sanity check on each entry to userspace. 862306a36Sopenharmony_ci This check can spot missing TLB invalidation/wrong PTE permissions/ 962306a36Sopenharmony_ci premature page freeing. 1062306a36Sopenharmony_ci 1162306a36Sopenharmony_ci If unsure, say N. 1262306a36Sopenharmony_ci 1362306a36Sopenharmony_ciconfig LD_NO_RELAX 1462306a36Sopenharmony_ci bool "Disable linker relaxation" 1562306a36Sopenharmony_ci default y 1662306a36Sopenharmony_ci help 1762306a36Sopenharmony_ci Enable this function to disable link-time optimizations. 1862306a36Sopenharmony_ci The default linker behavior is to combine identical literal 1962306a36Sopenharmony_ci values to reduce code size and remove unnecessary overhead from 2062306a36Sopenharmony_ci assembler-generated 'longcall' sequences. 2162306a36Sopenharmony_ci Enabling this option improves the link time but increases the 2262306a36Sopenharmony_ci code size, and possibly execution time. 2362306a36Sopenharmony_ci 2462306a36Sopenharmony_ciconfig S32C1I_SELFTEST 2562306a36Sopenharmony_ci bool "Perform S32C1I instruction self-test at boot" 2662306a36Sopenharmony_ci default y 2762306a36Sopenharmony_ci help 2862306a36Sopenharmony_ci Enable this option to test S32C1I instruction behavior at boot. 2962306a36Sopenharmony_ci Correct operation of this instruction requires some cooperation from hardware 3062306a36Sopenharmony_ci external to the processor (such as bus bridge, bus fabric, or memory controller). 3162306a36Sopenharmony_ci It is easy to make wrong hardware configuration, this test should catch it early. 3262306a36Sopenharmony_ci 3362306a36Sopenharmony_ci Say 'N' on stable hardware. 3462306a36Sopenharmony_ci 3562306a36Sopenharmony_ciconfig PRINT_STACK_DEPTH 3662306a36Sopenharmony_ci int "Stack depth to print" if DEBUG_KERNEL 3762306a36Sopenharmony_ci default 64 3862306a36Sopenharmony_ci help 3962306a36Sopenharmony_ci This option allows you to set the stack depth that the kernel 4062306a36Sopenharmony_ci prints in stack traces. 4162306a36Sopenharmony_ci 4262306a36Sopenharmony_ciconfig PRINT_USER_CODE_ON_UNHANDLED_EXCEPTION 4362306a36Sopenharmony_ci bool "Dump user code around unhandled exception address" 4462306a36Sopenharmony_ci help 4562306a36Sopenharmony_ci Enable this option to display user code around PC of the unhandled 4662306a36Sopenharmony_ci exception (starting at address aligned on 16 byte boundary). 4762306a36Sopenharmony_ci This may simplify finding faulting code in the absence of other 4862306a36Sopenharmony_ci debug facilities. 49