config-microvm-debug

# NVX CI debug-kernel fragment.
#
# `nvx.py build-kernel --debug` appends this fragment to kernel/config-microvm
# before `olddefconfig`. It enables the watchdogs that production keeps off so
# CI can prove that snapshot restores never trip them. Nothing else may differ
# from production: DEBUG_KERNEL would otherwise default DEBUG_MISC, RCU_TRACE,
# and X86_DEBUG_FPU on, and the RCU stall settings are pinned to the production
# values. CI can shorten the soft-lockup and hung-task thresholds per boot with
# `watchdog_thresh=` and `sysctl.kernel.hung_task_timeout_secs=` instead of
# rebuilding. The RCU stall timeout stays at 21 s because the time ABI's
# conformance check C8 requires it.
CONFIG_DEBUG_KERNEL=y
# CONFIG_DEBUG_MISC is not set
# CONFIG_RCU_TRACE is not set
# CONFIG_X86_DEBUG_FPU is not set
CONFIG_SOFTLOCKUP_DETECTOR=y
# CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set
CONFIG_DETECT_HUNG_TASK=y
CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=120
# CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set
CONFIG_RCU_CPU_STALL_TIMEOUT=21
CONFIG_RCU_EXP_CPU_STALL_TIMEOUT=0
CONFIG_RCU_CPU_STALL_CPUTIME=y